Opaque-coloured ir-reflecting plastic moulding compound
SUBSTANCE: there is disclosed application of inorganic IR-reflecting pigments for dark-coloured moulding compounds containing mixed polymethyl(meth)acrylate and adjugated matrix to 45 wt % containing (wt %): styrene (70-92), acrylonitrile (8-30), additional comonomers (0-22) and inorganic pigments. A moulded piece made of these moulding compounds is characterised with heating rate 50°C/20 min and less. In addition, there is disclosed application of the declared moulded piece over the other moulded piece with using conventional methods.
EFFECT: development of well processed, stable opaque-coloured IR-reflecting moulding compounds.
7 cl, 3 dwg, 2 tbl, 4 ex
The invention relates to opaque colored reflecting infrared radiation poly(meth)acrylate compositions of molds that can be used as IR-barrier layer for other plastic molds.
Because the emission spectra obtained for pure (poly(meth)acrylate) has very good properties, the corresponding compounds of molds, incidentally, are processed to obtain coextruding layers or treated as the outer layers of the parts covered in mold. These layers are used, among other things, as the outer layer of foil, sheets, plates, profiles and pipes, the main component, or a protective layer which is to some extent from other plastics. These plastics, such as polyvinyl chloride, polystyrene, polycarbonate, ABS (a copolymer of Acrylonitrile, butadiene and styrene) and ASA (copolymer of acrylic ester, styrene and Acrylonitrile)are also important properties such as impact strength and/or low cost.
Examples of the application of these coextruded or articles covered in mold, are structural applications, such as downspouts and window frames; automotive applications such as roof elements, external and internal protective coatings (panel), spoilers and mirrors, mirror frames, household and sporting applications, such as protective coatings on tools, external panels for boats foil for skiing.
It is known that opaque painted poly(meth)acrylate (emission spectra obtained for pure) compounds of molds can be used for protection from weather plastic molds, consisting, for example, from polyvinyl chloride (PVC).
Covered plastic mold then is provided by a dye, such as TiO2that reflects infrared radiation on the boundary layer of two plastic molds and, thus, prevents the excessive heating of the product.
DE 2719170 (Dynamit Nobel) describes a process for the protection of the PVC layers from the influence of solar light through the layer, which was strongly marked on the PVC layer and which was equipped not only with UV-stabilizers, but the IR reflectors. Used IR reflectors include decolorizing chromate, molybdate red, molybdate orange, chrome oxide green, antimony sulphide, sulphoselenide cadmium, cadmium sulfide, a black pigment, anthraquinone, dark blue anthraquinone pigment, monoazo pigment or a phthalocyanine. Some of these pigments are no longer approved. Emission spectra obtained for pure, not characterized in any more detail, is described as the material for the outer layer. German patent DE 2605325 (Dynamit Nobel) similarly describes the process to protect the PVC surfaces, and applied a protective layer of colored opaque enough to achieve the maximum reflectance in the IR region and the minimum permeability of the UV region. The goal is achieved through the use of at least one IR reflective black pigment or IR-reflecting colored pigment. For pigments darker colors mainly IR-absorbing pigments were not used. The pigment used in the examples include titanium dioxide or antrahinonovye black in combination with the UV absorber.
International application WO 00/24817 (Ferro) describes the corundum-hematite structure, in which were sewn oxides of aluminum, antimony, bismuth, boron, chrome, cobalt, gallium, indium, iron, lanthanum, lithium, magnesium, manganese, molybdenum, neodymium, Nickel, niobium, silicon or tin.
To apply dark-colored plastic molds outdoors requires the solution of some problems:
- plastic mold must be weather proof - regardless of color;
- must be good and durable adhesion between the outer layer and a plastic press-form, which should be covered;
- heating of the plastic mold by direct sunlight must not exceed the permissible values. The amount of heat should not be so large that the product will suddenly expand and will be achieved temperature above the glass transition temperature. As an example, it can cause permanent deformation of the window frame and the impossibility of its further from what Rivonia;
- used color pigments shall be of themselves in this way weatherproof, as well as toxicologically harmless and inexpensive.
Other problems solved by the composition of the invention are:
- colored compositions of the molds must have good machinability
the composition must be stable at the processing temperatures.
If different IR-reflecting inorganic colored pigments are used in the emission spectra obtained for pure (poly(meth)acrylate) compositions molds, these compounds form can be used to produce dark-colored plastic molds and other plastic molds can be coated with the above-mentioned emission spectra obtained for pure (poly(meth)acrylate) compositions of molds, however, they have a significantly lower rate of heat when illuminated by the sun than the mold, consisting of a standard dark-colored emission spectra obtained for pure or covered them.
It was found that the use of the pigments of the following classes
|CAS Number||C.I. Name||C.I. Number||Chemical name|
|68186-85-6||C.I. Green pigment 50||C.I. 77377||Titanite cobalt green spinel||1308-38-9||C.I. Green pigment 17||C.I. 77288||The chromium oxide|
|109414-04-2||C.I. Brown pigment 29||The chromium oxide iron|
|68187-09-7||C.I. Brown pigment 35||C.I. 77501||The iron chromite brown spinel|
|71631-15-7||C.I. Black pigment 30||C.I. 77504||Chromite Nickel iron black spinel|
|C.I. item Colour Index, the Society of dyers and Colorists (SDC)|
in the emission spectra obtained for pure (poly(meth)acrylate) compositions molds allows you to prepare opaque dark-colored compositions of the mold without excessive heating at the sun plastic molds, covered with them, or molds made from these materials. Property "dark" can be defined by the values L* according to DIN 6174 (01/1979): Colorimetric determination of difference colors for the most part the shades on the CieLab formula. The value of the CieLab L* for opaque dark-colored compounds form below 51, preferably n is 41, and very preferably below 31.
The number of pigments or mixtures thereof, are included in molds, from 0.05 to 5.0 wt.%, preferably from 0.075 to 3.0 wt.% and very preferably from 0.1 to 2 wt.%.
Other dyes suitable for dyeing emission spectra obtained for pure (poly(meth)acrylate) compositions molds, can be used additionally to color variation. These dyes can be either IR-reflecting - for example, titanium dioxide or non-IR reflective. The proportion of these additional dyes can be from 0 to 3.0%, preferably from 0 to 2.5 wt.% and particularly preferably from 0 to 2.0 wt.%, based on the composition of forms.
Shades of dark colors are:
and mixed shades are also possible.
The composition forms a Plexiglas®7N is used as a component of the emission spectra obtained for pure. It is commercially available from Röhm GmbH & Co. KG.
The composition of the forms of the present invention includes poly(meth)acrylates. The expression (meth)acrylates include methacrylates and acrylates, and mixtures thereof.
Poly(meth)acrylates are known to those who skilled in this area. These polymers are usually obtained by free-radical polymerization of mixtures containing (meth)acrylates.
These monomers are well known. Among these monomers, among others, (meth)acrylates which derive from saturated alcohols, such as methyl(meth)acrylate, the Teal(meth)acrylate, propyl(meth)acrylate, n-butyl(meth)acrylate, tert-butyl(meth)acrylate, pentyl(meth)acrylate and 2-ethylhexyl(meth)acrylate; (meth)acrylates which derive from unsaturated alcohols, for example, oleyl(meth)acrylate, 2-propenyl(meth)acrylate, allyl(meth)acrylate, vinyl(meth)acrylate; aryl(meth)acrylates such as benzyl(meth)acrylate or phenyl(meth)acrylate, where each of the aryl radicals may be unsubstituted or have up to four substituents; cycloalkyl(meth)acrylates, such as 3-vinylcyclohexane(meth)acrylate, bornyl(meth)acrylate; hydroxyalkyl(meth)acrylates, such as 3-hydroxypropyl(meth)acrylate, 3,4-dihydroxybutyl(meth)acrylate, 2-hydroxyethyl(meth)acrylate, 2-hydroxypropyl(meth)acrylate; glycol di(meth)acrylates, such as 1,4-butanediol di(meth)acrylate; methacrylates of alcohols, ethers, such as tetrahydrofurfuryl(meth)acrylate vinyloxyethoxy(meth)acrylate; amides and NITRILES of(meth)acrylic acid, such as N-(3-dimethylaminopropyl)(meth)acrylamide, N-(diethylphosphino)(meth)acrylamide, 1-methacryloylamido-2-methyl-2-propanol; sulfur-containing methacrylates, such as ethylsulfinyl(meth)acrylate, 4-thiocyanomethyl(meth)acrylate, ethylsulfonyl(meth)acrylate, thiocyanomethyl(meth)acrylate, methylsulfonylmethyl(meth)acrylate, bis((meth)acryloyloxy) sulfide; multifunctional(meth)acrylates, such as trimethylolpropane three(meth)acrylate
Formulations that should be polimerizuet may also contain, in addition to (meth)acrylates described above, other unsaturated monomers copolymerisate with the above-mentioned (meth)acrylates. The number normally used for these compounds, from 0 to 50 wt.%, preferably from 0 to 40 wt.%, and particularly preferably from 0 to 20 wt.%, based on the weight of the monomers and comonomers can be used individually or in the form of a mixture.
Among them, inter alia, 1-alkenes, such as 1-hexene, 1-hepten; branched alkenes, such as vinylcyclohexane, 3,3-dimethyl-N-propene, 3-methyl-1-Diisobutylene, 4-methyl-1-penten; Acrylonitrile; vinyl esters such as vinyl acetate; styrene, substituted styrene having one alkyl substituent in the side chain, e.g. α-methylsterols and α-atillery, substituted styrene having one alkyl substituent in the ring, such as vinyltoluene and p-methylsterol, halogenated styrene such as monoliteral, dichlorostyrene, dibromostyrene and cerebrosterol; heterocyclic vinyl compounds such as 2-vinylpyridine, 3-vinylpyridine, 2-methyl-5-vinylpyridine, 3-ethyl-4-vinylpyridine, 2,3-dimethyl-5-vinylpyridine, vinylpyridine, vinylpyridine, 9-vinylcarbazole, 3-vinylcarbazole, 4-vinylcarbazole, 1-vinylimidazole, 2-methyl-1-vinylimidazole, N-vinyl pyrrolidone, 2-vinyl pyrrolidone, N-Winnie pyrrolidin, 3-vinylpyrrolidone, N-vinylcaprolactam, N-vinylboronate, vinyloxy, viniferin, Venitian, vinylsilane, initiatory and hydrogenated vinylthiazole, vinylacetal and hydrogenated vinylacetal; vinyl and izoprenil ethers; derivatives of maleic acid, such as maleic anhydride, methylmalonic anhydride, maleimide, methylmaleimide; and diene, such as divinylbenzene.
Polymerization mainly initiated by the well-known free-radical initiators. Examples of preferred free-radical initiators are azo initiators well known to those skilled in this field, for example, AIBN (azobisisobutyronitrile) and 1,1-azobis(cyclohexanecarbonitrile)and peroxidase, such as methyl ethyl ketone peroxide, acetylacetone peroxide, delauriers, tert-butyl per-2-ethylhexanoate, ketone peroxide, methyl isobutyl ketone peroxide, cyclohexanone peroxide, Dibenzoyl peroxide, tert-butyl peroxybenzoate, tert-butyl peroxy isopropyl carbonate, 2,5-bis(2-ethylhexanoylperoxy)-2,5-dimethylhexane, tert-butyl peroxy-2-ethylhexanoate, tert-BUTYLPEROXY-3,5,5-trimethylhexanoate, dicumylperoxide, 1,1-bis(tertBUTYLPEROXY)cyclohexane, 1,1-bis(tertBUTYLPEROXY)-3,3,5-trimethylcyclohexane, cumylhydroperoxide, tert-butylhydroperoxide, bis(4-tert-butylcyclohexyl)PEROXYDICARBONATE, CME and two or more of the aforementioned compounds with one another, and also mixtures of the aforementioned compounds with other compounds, which can likewise form free radicals.
Often used amount of these compounds is from 0.1 to 10 wt.%, preferably from 0.5 to 3% by weight based on the weight of monomers.
Preferred poly(meth)acrylates obtained by polymerization of mixtures which include at least 20 wt.%, in particular at least 60 wt.%, and particularly preferably at least 80 wt.% of methyl methacrylate, based in each case on the total weight of monomers, which should be polimerizuet.
Here you can use various poly(meth)acrylates, which differ, for example, the molecular weight or composition of the monomers.
The composition forms may also contain other polymers to modify the properties. Among them, among other things, polyacrylonitrile, polystyrenes, polyethers, polyesters, polycarbonates, and PVC. These polymers can be used alone or in the form of a mixture, and it is also possible to add to the compositions of molds copolymers obtained from the above-mentioned polymers. Among them, in particular, styrene-Acrylonitrile polymers (SANs), the number which, added to the compositions of the mold, preferably not more than 45 wt.%.
Especially predpochtitelney-Acrylonitrile polymers can be obtained by polymerization of mixtures, consisting of
from 70 to 92 wt.% styrene,
from 8 to 30 wt.% Acrylonitrile,
from 0 to 22 wt.% other comonomers, based in each case on the total weight of monomers, which should be polimerizuet.
In special versions of the invention, the proportion of the poly(meth)acrylates, at least 20 wt.%, preferably, at least 60 wt.%, and particularly preferably at least 80 wt.%.
Particularly preferred compounds of molds of this type are commercially available under the trademark PLEXIGLAS®from Röhm GmbH & Co. KG.
The average molecular mass MwHomo - and/or copolymers to be used according to the invention as a polymer matrix, can be widely varied, while the molecular weight is typically adapted to the desired use and the method of processing composition forms. However, it usually ranges from 20000 to 1000000 g/mol, preferably from 50,000 to 500,000 g/mol, and especially preferably from 80,000 to 300000 g/mol, while the final restriction is not implied.
The following substances were used as dyes:
- Cromophtal Brown 5R, Ciba Specialty Chemicals
- Sandoplast Red Violet R, Clariant
- Thermoplast Blue 684, BASF
- Ultramarine Blue 31, Nubiola
- Bayferrox 180 M, Bayer
- Bayferrox 645 T, Bayer
- Microlith Green GA, Ciba Specialty Chemicals
- Pigment black FW1, Degussa
- PK 24-10204, Ferro
PK 10456, Ferro
- Titanium dioxide CL 2220, Kronos
Coloring compositions f is RM:
Dyes and compositions of forms gomogenizirovannykh rolls. Formulations for specific examples set out in Annex 1. A sheet of Plexiglas®GS White 003 (40 mm×21 mm) with a thickness of 3 mm was also used (see the study of composition of forms). 1.5% of titanium dioxide Cl 2220 is present as a dye, IR-reflecting pigment in casting sheet consisted of the emission spectra obtained for pure.
PLEXIGLAS®7N provides the remaining amount, giving 100% by mass.
The compositions for examples
|Composition||EUR. Example 1||EUR. Example 2||EUR. Example 3||EUR. Example 4||Fig. Example 1||Fig. Example 2||Fig. Example 3||Fig. Example 4|
|Cromophtal Brown 5R||0.90%|
|Sandoplast Red Violet R||0.17%|
|Thermoplast Blue 684||0.10%|
|Ultramarine Blue 31||0.65%|
|Bayferrox 180 M||0.33%|
|Bayferrox 645 T||0.18%|
|Microlith Green GA||0.10%|
|Pigment black FW1||1.00%|
|Termoplast Black X70||0.60%|
|PLEXIGLAS®7N to 100 wt.%|
The study of the structures of molds:
Used press for the production of pressed disks of thickness 0.5 mm from the colored compositions of the molds. The appropriate test samples were tested by the following methods:
|Behavior when heated:||A sample of 50 mm in diameter and 0.5 mm in thickness was placed on Rohacell®a cube with a side length of 50 mm Thermocouple with a diameter of 0.5 mm were fixed under the centre of the sample film Tesa®. A sheet of Plexiglas®GS White 003 (40 mm×21 mm) was pressed into Rohacell®. Sample thermocouple was attached to it with double sided adhesive Tesa®Fotostrip. The sample was illuminated using a 60 W incandescent lamp, adjustable 220 (stabilizer mains voltage). The vertical distance between the bottom edge of the glass bulb and the sample is 50 mm, the Temperature was shot after 20 minutes of lighting. Heating was measured by a method based on ASTM D4803-97.|
|Reflection:||Spectra were measured on a Perkin Elmer Lambda 19. For the fact the samples were measured with and sometimes without a sheet of Plexiglas ®GS White 003 thickness of 3 mm|
Behavior results when heating a test sample can be found in Table 2.
|The value of L*||Is a*||The value b*||Temperature after lighting. Measuring with a NiCr-Ni thermocouple with a diameter of 0.5 mm with display Testo 950|
|Sample||D65/10; reflection; heating; CieLab||D65/10; reflection; heating; CieLab||D65/10; reflection; heating; CieLab||D65/10; reflection; heating; CieLab||D65/10; reflection; heating; CieLab||D65/10; reflection; heating; CieLab|
|Comparison 1 (brown, organic, IR-transmissive)||30.1||3.3||4.1||31.0||55.0||24.0|
|Comparison 2 (brown, inorganic, non-infrared absorbent)||28.2||3.4||1.9||35.1||57.3||22.2|
|An example of the invention 1 (brown)||28.3||4.5||2.2||29.4||53.3||23.9|
|Example of invention 2 (brown)||27.2||3.9||1.8||32.3||56.0||23.7|
|An example of the invention 3 (brown)||27.7||4.0||1.9||31.7||55.6||23.9|
|Comparison of 3 (black, inorganic, non-infrared absorbent)||24.3||0.0||-0.8||43.8||67.7||23.9|
|Comparison of 4 (black, neorganic the ski, The IR-absorbing)||24.0||-0.1||-0.9||42.8||66.8||24.0|
|Example 4 (black)||26.1||1.3||0.6||37.4||61.4||24.0|
Spectra of reflectivity can be found in figure 1 (brown color with a sheet of Plexiglas®GS White 003 3 mm thick), 2 (black color with a sheet of Plexiglas®GS White 003 3 mm thick) and 3 (brown without a sheet of Plexiglas®GS White 003 3 mm thick).
The examples clearly reveal the improvements achieved by means of the invention described here:
Table 2 shows that the rate of heat brown the pressed disks of the invention (Examples of the invention 1, 2, 3) better than comparison 2 (brown stamped discs produced using the inorganic IR absorbing dye), and compared with comparison 1 (dye, used here, was IR-transmissive-IR reflection took place on a white sheet of Plexiglas®GS). Of iron or pressed disks of the invention (Example of invention 4) can also be seen that the heating rate here is exactly what ucse (below), than for comparisons 3 and 4.
- figures 1 and 2 clearly show that, based on the appropriate shade, pressed disks of the invention is clearly reflect infrared light (wavelength > 700 nm) better than comparison. Comparison 1 is an exception here - but the reflection going on here on a white sheet of Plexiglas®GS.
- figure 3 clearly shows that even without backing sheet Plexiglas®GS brown pressed disks of the invention is clearly reflect the IR light is better than comparison.
1. The use of inorganic pigments for the preparation of dark-colored molding masses, mainly consisting of polymethyl(meth)acrylate, and inorganic pigments are IR-reflecting, forming mass consists of a mixture consisting of polymethyl(meth)acrylate and up to 45 wt.%, additional matrix consisting of from 70 to 92 wt.% styrene, from 8 to 30 wt.% of Acrylonitrile, from 0 to 22 wt.% additional comonomers and inorganic pigments, and molded products made from them, is the heating rate is less than 50°C/20 minutes
2. The use of inorganic pigments for the preparation of dark-colored molding masses according to claim 1, characterized in that the moldings produced from them, is the heating rate is less than 45°C/20 minutes
3. The use of inorganic pigments for the preparation of dark-colored molding masses according to claim 1 characterized in, that the moldings produced from them, is the heating rate is less than 40°C/20 minutes
4. The use of dark-colored molding masses according to claims 1 to 3 for the manufacture of plastic moulded products.
5. The use of a plastic molded product according to claim 4 for coating a plastic molded product, characterized in that the plastic molded product is applied using standard methods for the second plastic molded product.
6. The use of a plastic molded product according to claim 5, characterized in that at least one additional plastic layer is applied using standard methods on a plastic molded product.
7. Forming mass, which is the IR-reflecting and consists of polymethyl(meth)acrylate and an additional polymer, wherein the molding composition comprises from 90 to 40 wt.% polymethyl(meth)acrylate and from 0 to 45 wt.%, matrix consisting of from 70 to 72 wt.% polystyrene, from 8 to 30 wt.% polyacrylonitrile, from 0 to 22 wt.% additional copolymers and from 0.5 to 5 wt.% The IR-reflective pigment.
SUBSTANCE: present invention pertains to compositions, with low coefficient of friction for use in friction units of living organisms. Proposal is given of an antifriction composition, containing, as polymer binding mixture (with ratio of components in the binder): methyl methacrylate monomer (27-36 mass units), polymethyl methacrylate polymer powder (72-64 mass units), initiator - benzoyl peroxide 1 mass units (polymer binder A); or a mixture (with ratio of components in the binder): methyl methacrylate (27-36 mass units), copolymer powder (72-64 mass units) with the following content of components: methyl methacrylate - 89 mass units, ethyl methacrylate - 8 mass units, methyl methacrylate - 2 mass units, as well as initiator-benzoyl peroxide - 0.6-1.5 mass units (polymer, binder B) and ultrahigh-molecular polyethylene with 1·106 - 12·106 dalton molecular weight, in powder form (2-15 mass units per 85-98 mass units of polymer binder). Compared to the prototype, the value of coefficient of friction decreases by 2-4 times.
EFFECT: design of a composition, which reduces friction in the maxillotemporal joint of a polymer implant.
3 cl, 4 tbl
SUBSTANCE: invention refers to technology of hull-kernel particles which can be used to modify impact strength of poly(met)akrylate moulding compositions. According to method a) water and emulsifier b) are added with 25.0 to 45.0 mass fractions of the first composition containing A) alkylmetacrylate 50.0 to 99.9 mass fractions, B) alkylakrylate 0.0 to 40 mass fractions, C) cohesive monomers 0.1 to 10.0 mass fractions, and D) styrene monomers 0.0 to 8.0 mass fractions, and polymerised, c) added 35.0 to 55.0 mass fractions of the second composition containing E) (met)akrylates 80.0 to 100.0 mass fractions, F) cohesive monomers 0.05 to 10.0 mass fractions, and G) styrene monomers 0.0 to 20.0 mass fractions, and polymerised, d) added 10.0 to 30.0 mass fractions of the third composition containing H) alkylmetakrylates 50.0 to 100.0 mass fractions I) alkylakrylates 0.0 to 40.0 mass fractions and J) styrene monomers 0.0 to 10.0 mass fractions, and polymerised. Method is distinctive in that e) each polymerisation cycle is performed at temperature within 60 to 90°C and f) fractional content of all substances is selected so that total weight A) to J) per total weight of aqueous dispersion exceeds 50.0 mass %. Presented method is used to produce impact strength modifiers minimum content of which provides sufficient improvement of impact strength when tested on cut moulding composition samples, not degrading at the same time other important properties of moulding composition.
EFFECT: production of impact strength modifiers minimum content of which provides sufficient improvement of impact strength when tested on cut moulding composition samples, not degrading at the same time other important properties of moulding composition.
17 cl, 8 tbl
FIELD: composite polymer biomedicine materials containing polymer binder, biocompatible filler and carbon reinforcing filler.
SUBSTANCE: claimed composition contains polymer binder, namely mixture of polymethylmethacrylate or methylmethacrylate copolymer with methylacrylate and monomer methylmethacrylate in ratio of polymer part to monomer from 1:0.3 to 1:0.5 mass pts (50-72 mass pts); peroxide initiator (0.05-0.5 mass pts): carbon continuous fibers of 200-1000 filaments made of hydratcellulose fiber of polyacrylonitrile fiber (2-10 mass pts); and hydroxyapatite as filler (25-40 mass pts). Method for production of material from claimed composition useful in manufacturing of jowl implants also is disclosed.
EFFECT: polymer material having natural bone-like properties.
3 cl, 10 ex, 1 tbl
FIELD: organic chemistry, impregnating compositions.
SUBSTANCE: invention relates to composition used for impregnation of a polishing disk. The composition for impregnation of polishing disk comprises a binding agent aqueous solution representing a mixture of an aqueous emulsion of co-polymer prepared by emulsion polymerization of butyl acrylate, ethyl acrylate, methyl methacrylate and acrylic acid amide with the content of basic substance 50 ± 5%, liquid water glass and oxyethylated lanolin in the following ratio of components, mas. p. p.: copolymer of butyl acrylate, ethyl acrylate, methyl methacrylate and acrylic acid amide as measure for dry residue, 15-50; liquid water glass, 3-12; oxyethylated lanolin, 1-6, and water, 45-105. Invention provides enhancing stability and to reduce cost in making the polishing disk.
EFFECT: improved and valuable properties of composition.
2 tbl, 4 ex
FIELD: polishing materials.
SUBSTANCE: invention relates to manufacturing cotton polishing disks based on friction effect. The composition for making polishing disks comprises a binding agent aqueous solution wherein an aqueous emulsion of copolymer 15-50% of its total mass is used and prepared by emulasion polymerization of butyl acrylate, ethyl acrylate, methyl methacrylate and acrylic acid amide in the ratio, mas. p. p.: butyl acrylate, 140-160; ethyl acrylate, 140-160; methyl methacrylate, 205-231; acrylic acid amide, 17-19. Invention provides enhancing durability of polishing disks and to reduce cost in their making. Invention can be used for polishing table dishware and their parts made of stainless, devices for dental practice, jewelry articles, watches and so on.
EFFECT: improved and valuable properties of composition.
2 tbl, 9 ex
FIELD: polymer materials.
SUBSTANCE: composition contains, wt %: vinylidene fluoride 20-40, methyl methacrylate homopolymer or copolymer, acryl elastomer 5-18, and UV-absorbing substance 1-4. Invention also discloses jointly extruded films (options) and substrates covered by these films. Invention enables preparing composition with not rising UV-absorbing substances and manufacturing films showing high mechanical strength and providing high-quality adhesion to substrate while being resistant to radiation.
EFFECT: improved consumer's properties of films.
14 cl, 7 ex
SUBSTANCE: invention relates to formed polymer products with electroconducting covering. Described is method of manufacturing polymer formed products, which lies in the following: on formed product by known method applied is lacquer system which includes binding agent, thickener, such as polymer thickener in amount from 0 to 20% wt or oligomer thickener in amount from 0 to 40% wt in terms of dry film (components a, b, c, d, e) and components - electroconducting powder-like metal oxide with average particle size from 5 to 50 nm and aggregation degree from 0.01 to 99%, and inert nanoparticles of silicon dioxide, each in amount from 5 to 500 wt fraction, in terms of component a), and, if necessary, solvent and other commonly used in lacquer systems additives, with further lacquer hardening.
EFFECT: obtaining covering with high electroconductivity with reduced amount of metal oxide.
6 cl, 4 ex
SUBSTANCE: invention refers to butyral resin sheets with improved blocking resistance. Butyral resin sheet contains bifunctional surface modifier covering plastificised butyral resin sheet surface. Bifunctional surface modifier includes block-resistant segment and compatible segment. Herewith bifunctional modifier includes amphiphilic block polymer polyethylene-poly(ethylene glycol) of general formula CH3CH2(CH2CH2)m-(OCH2CH2)mOH, where m is approximately 5 to 24, and n is approximately 3 to 30. Method for making polymer sheet with improved blocking resistance includes processing polymer in melt thus making a sheet, and coating polymer sheet surface with surface bifunctional modifier. Laminated nonshattering glass contains two glass sheets and intermediate polymer sheet covered with bifunctional surface modifier.
EFFECT: improved blocking resistance of butyral resin sheet with maintaining optical transparency and glass adhesion while butyral resin sheet is introduced in laminated nonshattering glass.
16 cl, 5 tbl, 4 ex
SUBSTANCE: present invention pertains to a solidification method of compositions capable of polymerisation, and mainly to surface coatings, using plasma. The composition contains (a) at least one free radical monomer or oligomer compound, capable of polymerisation or (b) at least one compound, which under the effect of an acid, can be polymerised by cation alkyl- or aryl-containing cations or protons, and capable of polymerisation, polycondensation or polyaddition, or (c) at least one monomer, oligomer or polymer compound, which under the effect of a base, is capable of polymerisation, polycondensation or polyaddition, or a mixture of components (a) and (b), or a mixture of components (a) and (c); and (d) at least one photoinitiator, which is can be activated by a plasma discharge. The photointiator is chosen from a group consisting of a free radical photoinitiator, photolatent acid and a photolatent base. The composition is deposited onto a three-dimensional substrate, the shape of which is characterised by undercut or darkened parts. Solidification takes place in a plasma discharge chamber. Description is also given of the solidification method of a composition, containing, besides the above mentioned components, at least one light-stabilising compound or UV-radiation absorbing compound, a method of moulding objects from the composite materials, the substrate with deposition of coating on its surface and coatings, obtained using these methods.
EFFECT: obtaining a coating on complex substrates with good properties.
19 cl, 12 ex
FIELD: technological processes.
SUBSTANCE: invention may be used for development of new nano-structured thin-film materials applied in systems of controlled transport and delivery of micron, submicron and molecular objects in liquid phase, in technologies of bioengineering, in nano-metrical assembly technologies, in analytic, sensor, biomedical, cosmetic, catalytic, membrane technologies. Thin-film material is made in the form of free thin film in liquid phase that includes colloidal particles, which are chemically connected between each other in the film plane, at that components of material separately are able to form solutions in liquid phase. Material is formed by the method on the basis of self-assembly and self-organisation effects of low-dimensional structures directly in the volume of liquid phase. Initial solutions of material individual components are prepared, and liquid phase that contains prepared thin-film material is formed. Processes of binding and creation of chemical links are carried out between colloidal particles by means of single or multiple addition of solution that contains one or several reagents or components into solution of another component or other components of prepared thin-film material. Formation of material thin-film structure is performed in the volume of liquid phase for the time sufficient for processes of material components binding and creation of free thin-film structure. Thin-film material is applied as a layer on the surface of extended articles - threads, wire, rods, etc.
EFFECT: method of thin-film material production is environmentally safe; provides higher material output and suggests possibility of technological process automation.
25 cl, 17 dwg, 1 ex
FIELD: production of chemical threads, in particular, aramide complex thread.
SUBSTANCE: thread has finishing coating making > 1.5 wt% and manufactured from organic substance having conductivity > 4 m Siemens/cm measured with finishing substance content of 50 wt% in water at temperature of 20 C having specific electrical resistance < 2.5·104 Ohm·cm. Method for manufacturing of thread involves applying solution of organic substance having indicated conductivity onto thread until content of said solution > 1.5 wt% is reached. Said thread is used for manufacture of conductive cables, in particular, cables for lifts.
EFFECT: sufficiently high current conductive properties and high mechanical properties of aramide threads allowing usage thereof for manufacture of various cable type products.
10 cl, 10 tbl, 5 ex
FIELD: polymer materials.
SUBSTANCE: invention provides polymer material with protective coating for upholstery simulated leathers characterized by reduced combustibility. Polymer material obtained from polyvinylchloride, di-2-ethylhexyl phthalate, pyrocatechol, zinc oxide, and pigment further contains protective coating obtained from dimethylformamide solution of mixture of pyperilene/acrylonitrile/methacrylic acid copolymer (monomer unit ratio 40:50:10) and copolymer of 60-50% vinylidene difluoride and 40-50% tetrafluoroethylene.
EFFECT: (at optimal contents of copolymers) avoided migration of plasticizer, reduced burning rate so that material extinguishes earlier than burning attains measuring base , and reduced abrasion (by 40-50%).
1 tbl, 4 ex
FIELD: chemical industry; other industries; methods of production of the structurally modifiable flexible film used for molding of the spatially and structurally stable film articles.
SUBSTANCE: invention is pertaining to the production process of the spatially and structurally stable film articles, for example, dispensable containers. Structurally modifiable flexible film contains at least, one flexible layer bound, at least, by a part of its square with the stiffening system. The indicated system consists of, at least, one substance, which originally is liquid at deposition on the flexible layer, but then thickens at the first structural transformation. The produced flexible film afterwards may be solidified at the application of power in the second structural transformation.
EFFECT: invention ensures production of the structurally modifiable flexible film, which originally is liquid at deposition on the flexible base with subsequent solidification at the application of energy to it.
7 cl, 9 ex
FIELD: application of coatings onto substrates for producing of surfaces having texture similar to that of textile products.
SUBSTANCE: method involves coating fiber with polymeric dispersion based on polyurethane; mixing fiber with coating in conjunction with polymeric dispersion so as to produce covering material; applying covering material onto substrate surface; hardening covering material. Covering material contains 5-40 wt% of polymeric dispersion based on at least one polyurethane, with content of solid substance making 25-90 wt%; 0-35 wt% of hexamethylene diisocyanate; 2-20 wt% of fibrous material; 0-20 wt% of solvent; 5-35 wt% of water, and optionally 0.5-10 wt% of covering admixtures, pigments and/or fillers.
EFFECT: provision for manufacturing of surfaces with finishing texture similar to that of textile materials and soft touch provided by simplified process, improved ecology control and labor hygiene.
FIELD: polymer materials.
SUBSTANCE: invention relates to synthetic and natural water-soluble polymers coated with liquid glass imparting improved solubility if water and aqueous solutions. Invention is directed to modifying water-soluble polymers with minimum amounts of modifying agent so as that they could be reliable dissolved under complicated conditions. Objective is achieved by applying liquid soda glass onto water-soluble polymers.
EFFECT: enhanced water solubility of polymers.
20 cl, 2 ex
FIELD: chemical industry; polygraphy; methods of the stencil printing.
SUBSTANCE: the invention is pertaining to the paint suitable for the stencil printing inside the pressurized castings. The invention describes the paint suitable for the printing films made out of the transparent thermoplastic, consisting predominantly of: a) one or several pigments; b) the binding in the solution in c) the organic solvent or in the mixture of the organic solvents, d) the routine auxiliary materials, if it is desirable, at that as the binding use the copolymer of the poly-(metha)-acrylate containing (м1) from 50 up to 90 % to the mass of alkylmethacrtlate having from 1 up to 6 atoms of carbon in the ethereal radical; (м2) from 5 up to 25 % to the mass, at least, one vinylaromatic compound; (м3) from 1 up to 25 % to the mass of maleic anhydride, and if it is desirable, (м4) from 0 up to 5 % to the mass of the alkylacrylate having from 1 up to 6 atoms of carbon in the ethereal radical or the copolymer of the poly-(metha)-acrylamide containing polymethylmethacrylate with the degree of imidization from 65 up to 80 %, to 1 up to 15 mass % of methacrylic acid and from 1 up to 15 mass % of methacrylic anhydrade. At that the indicated copolymer has the softening temperature by VIKA (ISO 306 B) at least of 115°С. As the dissolvents use aliphatic, cycloaliphatic and aromatic hydrocarbons, ketones, esters, ethers, alcohols, phenoles or their mixtures. The invention also describes the film made out of the thermoplastic printed by the above described paint; the pressurized casting consisting of the film made out of the thermoplastic printed on the opposite side with the above described paint and supplied on this side with the layer of the thermoplastic coating. At that the indicated layer is applied by the operation of pressure die casting on the inside and at that the film and-or the plastic material for operation of the pressure die casting on the inside represents the copolymer of polymethylmethacrylate; and the method of production of the pressurized castings includes the following stages: a) stencil printing of the thermoplastic films by the above described method, b) the film molding, c) the pressurized castings on the inside on the stencil printed film side in the casting mould with the thermoplastic, and d) removal of the pressurized casting from the casting mould. The technical result of the invention: the paint is resistant to the action of the high pressures and temperatures during the operation of the pressurized casting on the inside, the image stencil printed by the paint has the stable color after long-term action of the atmospheric conditions.
EFFECT: the invention ensures, that the paint is resistant to the action of the high pressures and temperatures during the operation of the pressurized casting on the inside, the image stencil printed by the paint has the stable color after the long-term action of the atmospheric conditions.
6 cl, 1 tbl
FIELD: ecology; methods of environmental protection.
SUBSTANCE: the invention is pertaining to methods of environmental protection, in particular, to the method of effectivization of localization of the porous surfaces polluted by radioactive substances. The invention presents the method of effectivization of localization of the porous surfaces polluted by the radioactive substances ensuring deposition of the film-forming substances on the porous surfaces polluted by radioactive substances. Before deposition of the film-forming substances on the subjected to localization porous surfaces contaminated by the radioactive substances they are wetted with water or a surfactant solution to increase the thickness of the applied localizing film. Advantages of the invention consist in the increased efficiency of localization of the radioactive contaminations. The invention ensures increased efficiency of localization of the radioactive contaminations.
EFFECT: the invention ensures increased efficiency of localization of the radioactive contaminations.
2 tbl, 2 ex