Plasticised polyvinyl chloride-based polymer composition for film material
SUBSTANCE: plasticised polymer composition for film material contains polyvinyl chloride, dioctyl phthalate, epoxidised plant oil, calcium stearate, zinc stearate, and 4-methyl-2,6-isobornylphenol as a stabiliser-oxidant.
EFFECT: high thermal stability of the polymer composition while maintaining high breaking strength and elongation at rupture.
The invention relates to the field of chemical technology of polymer materials, particularly to plasticized compositions based on polyvinyl chloride, and may be used to produce non-toxic plasticized film materials for food and medical purposes.
In the processing of PVC compositions of the polymer as a result of exposure to high temperatures and high mechanical loads undergoes irreversible degradation. To prevent thermomechanical degradation in the composition administered various stabilizing additives [K.S. K.S. Minsker, Fedoseeva G.T. Degradation and stabilization of PVC. M. Chemistry, 1979, 272 S.], which slow down the aging process of the polymer ("average time of thermal stability") and increase color retention (figure svetostoyjkostj").
Special requirements to the stabilizing additives arise in the case of non-toxic PVC-compositions intended for materials in contact with food products or medical products. The range of non-toxic stabilizing additives is very limited and most importantly they usually are stabilizing compounds with low efficiency. This creates significant problems in the processing of non-toxic compositions. The most important indicator of the quality of the polymer film material Nar is remote from photochemical stability is its svetostoyjkostj.
Known non-toxic polymer composition [TU 6-05-1533-85. The plasticized granulated medical type PM-1/42, 1999] for the production of containers for infusion solutions based on polyvinyl chloride, with the following ratio of components (parts by weight):
|Epoxydecane vegetable oil||3|
|The zinc stearate||0,2|
A disadvantage of known composition are its low thermal stability and svetostoyjkostj in the processing conditions while exposed to high temperatures, mechanical loads and oxygen-related absence in the formulation of the stabilizer is an antioxidant.
Closest to the claimed technical essence and the achieved result is plasticized polymer composition [RF Patent №2155581, CL A61K 9/08, A61K 31/05, A61L 31/00, publ. 10.09.2000.] for the manufacture of containers for infusion solutions on the basis of polyvinyl chloride containing as a plasticizer on octylphthalate and additionally as a stabilizer, antioxidant - 4-methyl-2,6-isobutylphenyl (BHT), with the following content of components (parts by weight):
|Epoxydecane vegetable oil||3-10|
|The zinc stearate||0,35-0,7|
|4-methyl-2,6-di-tert-butylphenol (BHT)||the 0.05-0.1|
However, this known composition is characterized by low thermal stability and svetostoyjkostj. Low rates of thermal stability and svetostoyjkostj specified compositions involve the use of stabilizer and the antioxidant BHT, which under conditions of thermomechanical processing of polymeric compositions, due to their own high volatility, ineffective.
The purpose of the invention is the improvement of thermal stability and svetostoyjkostj plasticized polymeric compositions based on polyvinyl chloride film material
This goal is achieved in the proposed plasticized polymer comp the positions, containing polyvinyl chloride, dioctylphthalate, epoxydecane vegetable oil, calcium stearate, zinc stearate, and as a stabilizer, antioxidant - 4-methyl-2,6-isobornylphenol, in the following ratio, parts by weight:
|Epoxydecane vegetable oil||2,5-10|
|The zinc stearate||0,2-0,6|
4-methyl-2,6-isobornylphenol belongs to the class of terpenophenolic, Brutto-formula - C27H40O. the Molar mass - 380. The melting point of 201°C.
The principle of action of antioxidant-terpineol depends on the chemical nature of the polymer. For example, in the case of polypropylene terpineol slows the process of oxidation of macromolecules of the polymer. In plasticized polymeric compositions based on PVC principle phenolic antioxidant another. In the case of PVC compound antioxidant protects clonaepam the initial plasticizer from oxidation, which in turn is due to solvation stabilization slows down the process of dehydrochlorinated polyvinyl chloride, thereby enhancing thermal stability of the polymer (a known effect of "echo-stabilization" PVC) [K.S. K.S. Minsker, Abdullin M.I. the Effect of "echo-stabilization" upon thermal decomposition of polyvinyl chloride. // Reports of USSR Academy of Sciences. - 1982. - T. No. 1. - P.140-143]. At the same time slow down dehydrochlorinated PVC leads also to increase its svetostoyjkostj.
The invention is illustrated by the following examples, presented below and in the table.
Example 1. The composition comprising: polyvinyl chloride - 100 g (100 parts by weight); dioctylphthalate - 40 g (40 parts by weight); epoxydecane vegetable oil and 2.5 g (2.5 parts by weight); calcium stearate and 0.5 g (0.5 parts by weight), zinc stearate and 0.2 g (0.2 parts by weight) and 4-methyl-2,6-isobornylphenol - 0,05 g (0.05 parts by weight) is prepared by mixing the components in the mixer for 30 min at a temperature of 100°C. the Obtained plasticized polymer composition is processed in a film thickness of 0.4 mm valcheva-calender method at 160-170°C.
Indicators of the strength at break and elongation at break was determined in accordance with GOST 14236-81. The indicator "time of thermal stability of the composition was determined by indicator method "Congo-mouth" in accordance with GOST 14044-68. Svetostoyjkostj assessed visually on time to the effect dyeing of the film at termexposure (180°C). Photochemical stability of polymeric material is characterized by its stability against ultraviolet radiation during operation. In turn, svetostoyjkostj polymeric material characterized by its stability during thermomechanical processing at the production stage. The composition and properties of the finished material presented in the table.
Introduction 4-methyl-2,6-isobornylphenol less than 0.05 parts by weight leads to a decrease in thermal stability and svetostoyjkostj (example 11). Introduction 4-methyl-2,6-isobornylphenol more than 0.1 parts by weight leads to unnecessary expenditure of stabilizer is an antioxidant.
The proposed solution allows to increase thermal stability of plasticized polymeric compositions based on polyvinyl chloride film material in comparison with the prototype on 27-41%, and svetostoyjkostj on 14-57%, while maintaining high level of performance "tensile strength and elongation at break".
|The composition and properties of the plasticized composition|
|The content of components, parts by weight, indicators||Examples||The placeholder|
|Epoxydecane vegetable oil||2,5||5,0||7,0||10,0||10,0||8,0||7,0||5,0||2,5||5,0||6,0||6,0|
|The zinc stearate||0,2||0,25||0,3||0,35||0,35||0,3||0,3||0,35||0,35||0,3||0,2||0,3||0,4|
|The tensile strength, kgf/cm2||157||159||158||164||166||164||163||159||161||159||160||162||158|
|Elongation at break, %||221||225||223||227||222||225||224||221||223||226||223||222||223|
|The time of thermal stability, min., 175°C||66||68||69||71||72||73||66||67||70||72||48||74||52|
|Svetostoyjkostj, min, 180°C||45||45||50||50||50||55||45||50||55||55||30||55||35|
Plasticized polymer composition based on polyvinyl chloride film material containing polyvinyl chloride, dioctylphthalate, epoxydecane vegetable oil, calcium stearate, with earth zinc,
and as a stabilizer antioxidant contains 4-methyl-2,6-isobornylphenol in the following ratio of components, parts by weight:
|Epoxydecane vegetable oil||2,5-10|
|The zinc stearate||0,2-0,6|
SUBSTANCE: polyvinyl chloride composition plasticiser is a product of reaction of dioxane alcohol in a mixture with ethers and formals thereof with toluene diisocyanate. Disclosed also is a polymer composition containing polyvinyl chloride and said plasticiser.
EFFECT: modification of dioxane alcohols of the plasticiser prevents its dewetting and, as a result, reduces weight loss of the plasticiser, and enables to improve plasticising properties of the composition, raise flash point, thermal stability and resistance to thermal-oxidative degradation.
4 cl, 4 tbl
SUBSTANCE: rigid polyvinyl chloride (PVC) based wood-polymer composition contains a complex stabiliser, an impact strength modifier, wood flour and silicon sol as a binding agent, with the following ratio of components, pts.wt: polyvinyl chloride 100, impact strength modifier 4.8-9, complex heat stabiliser 4.5-7, wood flour 10-160, silicon sol 2-4.
EFFECT: obtaining highly filled rigid PVC compositions based on dispersed wood flour while preserving processing and operational characteristics.
SUBSTANCE: invention relates to chlorionated thermoplastic materials with mineral filler, having compatibility between said filler and chlorinated thermoplastic resin. The mineral filler compatibility agent in form of calcium when producing chlorinated thermoplastic material contains a comb-shaped polymer which contains at least one polyalkylene oxide group which is grafted onto at least one ethylenically unsaturated anionic monomer. The comb-shaped polymer contains at least one anionic monomer with ethylenic unsaturation and a monocarboxyl or phosphoric group or mixtures thereof, at least one non-ionic monomer containing at least one monomer of formula (I): , where m and p denote the number of alkylene oxide groups, which is less than or equal to 150, n denotes the number of ethylene oxide groups, which is less than or equal to 150, q denotes a whole number equal to or less than 1, where 5≤(m+n+p)q≤150, R1 denotes hydrogen or a methyl or ethyl radical, R2 denotes hydrogen or a methyl or ethyl radical, R denotes a radical which contains an unsaturated polymerisable group, preferably associated with a group of vinyl compounds, or a group of acrylic, methacrylic, maleic esters, or a group of allyl or vinyl ethers, which are substituted or unsubstituted, R' denotes hydrogen or a hydrocarbon radical with 1-40 carbon atoms or a ionic or ionisable group, such as carboxyl, and preferably denotes a hydrocarbon radical with 1-12 carbon atoms. The invention also relates to chlorinated thermoplastic materials containing at least one chlorinated thermoplastic resin, calcium carbonate and at least one compatibility agent.
EFFECT: high impact strength.
22 cl, 4 tbl
SUBSTANCE: invention relates to a stabilising system for halogen-containing polymers, as well as a composition and article made from the composition which contains the stabilising system. The stabilising system for halogen-containing polymers contains component (A) in form of a calcium monocarbonate hydroxodialuminate of formula (A) CamAl2(OH)6+2(m-1)CO3*nH2O (A), where m varies from 3.8 to 4.2 and n varies from 0 to 3, and component (B) in form of catena-2,2',2"-nitrile trisethanol perchlorate lithium or sodium coordination polymer (B1), having a monomer link of formula , where Mt denotes Li or Na, An denotes OCIO3, q equals 1, and can additionally contain perchlorate of quaternary or tertiary ammonium or phosphonium (B2).
EFFECT: high heat-stabilising action.
17 cl, 19 tbl
SUBSTANCE: composition contains a film binder - a suspension polyvinyl chloride, a plasticiser - diphenyl octyl phosphate, a stabiliser - barium, -cadmium, -zinc-containing complex brand Vigostab BKC, fireproofing additives - magnesium hydroxide brand "Ecopyrene 5C", antimony trioxide, micromarble fractionated in the ratio of (4.66÷6):1:1 accordingly, pigment is titanium dioxide and optical bleacher.
EFFECT: composition has high strength properties, does not sustain combustion, does not produce drops in process of burning, has low weight, high extent of whiteness, has water resistance to several meters of water column.
4 tbl, 9 ex
SUBSTANCE: polyvinyl chloride-based wood-polymer composition for profiled-trim moulding articles contains polyvinyl chloride, wood flour, a complex stabiliser, an acrylic modifier, polyethylene wax and a metal-containing lubricant. The metal-containing lubricant used in the composition is obtained by reacting higher monocarboxylic acids with glycerin at 130-230°C at molar ratio 1:(1-2) in the presence of oxides of divalent metals Ca, Zn, Mg or their two-component mixtures in weight ratio 0.25-1.0:0.5-1.0 in amount of 0.5-2.0 wt % of the overall reaction mass, where the higher monocarboxylic acids used are VIK, oleic and stearic acid. The composition also uses polyethylene wax with melting point not higher than 100°C. The complex stabiliser used is selected from: BAEROPAN R 9003 (produced by Baerlocher GmbH, Germany) or Naftosafe PEK 922 B (produced by Chemson, Austria). The acrylic modifier used is impact-resistant modifiers selected from: MB-87, DURASTRENGTH D320, DURASTRENGTH D300S (produced by Arkema, France), Metablen P-5500S (produced by Dangdong), Paraloid BTA 736H-S OS (produced by Rohm & Haac), Kane ACE F50 (produced by Kalek), Lariks on TU 2216-235-05757533-2000.
EFFECT: high quality of profiled-trim moulding articles, which is expressed by improved operational and technological parameters, specifically melt flow index, thermal stability, impact viscosity, low water absorption and environmental safety of the composition.
2 cl, 1 tbl
SUBSTANCE: invention relates to a processing additive for extrusion of polyolefins or thermoplastic resins. The composition contains at least one fluoropolymer (A), at least one inter-phase agent (B) and at least one stabiliser (C). The invention also relates to an extrusion method, which involves: (i) bringing the composition in solid state, as described above in any of claims 1-13, into contact with polyolefin or thermoplastic resin and (ii) extrusion of the mixture obtained at step (i) to obtain a film, pipe, relief or hollow body.
EFFECT: additive reduces or eliminates extrusion defects without reducing the yellowing index of the resin subjected to extrusion.
14 cl, 1 dwg, 1 tbl, 6 ex
SUBSTANCE: wood-polymer composition for articles contains polyvinyl chloride, wood flour, calcium-zinc complex stabiliser and the composition can additionally contain a metal-containing lubricant obtained via reaction of higher monocarboxylic acids with glycerine at 130-230°C in molar ratio 1:(1-2) in the presence of oxides of divalent metals Ca, Zn, Mg or other two-component mixtures in weight ratio 0.25-1.0:0.5-1.0 and polyethylene wax.
EFFECT: high quality of ready articles owing to improved technological parameters of the compositions, thermal stability, melt fluidity, water absorption and environmental safety.
2 cl, 1 tbl
SUBSTANCE: stable plasticised composition contains C4-C30-alkyl-pyrrolidone with a straight, branched or cyclic alkyl radical in amount ranging from more than 10 phr to 400 phr (parts per 100 parts of PVC), sufficient for plasticising said PVC to a flexible state. The PVC product is characterised by Shore hardness (scale A) less than 100 and is in form of calendered sheet, plastisol, foam, dispersion, film, siding, tube or pipe.
EFFECT: ensuring prolonged plastification of PVC in order to endow the PVC-based composition with flexibility, ductility or lower melting point for making articles.
19 cl, 3 ex, 4 tbl
SUBSTANCE: polyvinyl chloride composition for producing film materials contains suspended polyvinyl chloride, a mixture of plasticisers di-(2-ethylhexyl)phthalate, di-(2-ethylhexyl) sebacate, a complex metal-containing stabiliser - complex Ba-Zn stabiliser, filler - chalk, titanium dioxide, cellulose, lubricant - calcium stearate, pigments, polymer modifier - copolymer of vinyl chloride and vinyl acetate (VA-5) and a mixture of an oligomeric plasticiser based on a mixture of adipic or phthalic esters, n-butyl alcohol, 2-ethylhexanol and polypropylene glycol - component A with a surfactant which contains oxyethylated monoalkylphenol based on trimers of propylene - component B in ratio A:B equal to (11.5-18.23):1.
EFFECT: film material has low stickiness and hardness, high resistance to heat-and-light ageing while preserving physical and mechanical properties.
SUBSTANCE: composition contains a mixture of styrenated p-cresol and an optional co-stabiliser. The composition is liquid at room temperature, has viscosity of less than 40 Pa·s (40000 cP) at 25°C, exhibits acid number less than 0.1 mg KOH/g, and contains 2,6-distyrenated p-cresol assaying at 70% minimum by GC area. The mixture also contains monostyrenated p-cresol and tristyrenated p-cresol, each present in concentration ranging from about 1 to about 15% by GC area based on total area of the styrenated p-cresol. The mixture of the styrenated p-cresol is obtained through reaction of styrene and p-cresol in molar ratio from 1.85 to 2.1:1, respectively. The reaction is carried out in the presence of an acid catalyst at temperature from 40 to 150°C. Said stabilising composition is added to the polymer compositions in an effective amount for stabilisation thereof.
EFFECT: obtained stabilising compositions have a liquid physical form at room temperature and can act as both low-volatile additives in polyurethane-type film materials and as compositions providing good stabilisation.
13 cl, 8 tbl, 7 ex
SUBSTANCE: composition contains a polyolefin, sterically hindered phenol of the following formula: where groups X, which can be identical or different, have the following formula: where R1 and R4, which can be identical or different, are an alkyl group having from 1 to 8 carbon atoms; R2, R3, R5, and R6, which can be identical or different, are hydrogen or an alkyl group having from 1 to 8 carbon atoms, a hydrotalcite and/or bis(2,4-dicumylphenyl)pentaerythritol diphosphite. The disclosed polymer composition exhibits efficient metal deactivation and can therefore be used to make objects in contact with metals which cause decomposition.
EFFECT: high resistance to decomposition under the action of a metal.
25 cl, 2 tbl, 7 ex
FIELD: polymer chemistry.
SUBSTANCE: invention refers to the area of rubber industry, in particular, to unsaturated carbon-chain vulcanized rubber compound. The rubber compound contains, weigh percent: carbon-chain rubber-100, stearic acid - 1.5-2.0, sulphur-1.5-2.0, zinc oxide-3-5, benzothiazole derivative - 0.7-3.0, carbon black-40-50, antioxidant- 2.6-di-tret. butylphenol with potassium rhodanate in the methanole medium saturated with potassium bromide -0.5-3.0.
EFFECT: better resistance of the compound to semi-vulcanization and enhanced resin resistance to thermal-oxidative ageing under harsh conditions.
6 tbl, 56 ex
SUBSTANCE: rubber mixture contains the following in pts.wt: fluororubber SKF-26-100, calcined magnesia 5-6, calcium hydroxide 5-6, technical carbon T-900 20-22, barium sulphate 10-12, low-molecular weight polyethylene 1.0-1.1, dibutyl sebacate 1.0-1.1, diphenylol propane 1.6-1.7, octaethyl tetraamidophosphonium bromide 0.5-0.6, filler - magnetic powder Nd-Fe-B modified with 4.5-5.0% solution of γ-aminopropyl triethoxysilane in ethyl alcohol 50-500.
EFFECT: invention increases heat resistance and strength of rubber.
2 tbl, 3 ex
SUBSTANCE: tube is made from a polyolefin composition which contains a (co)polymer of ethylene or (co)polymer of propylene, a vitamin E type stabiliser of formula (I) , where R1, R2, R3, R4 and R5 independently denote H or unsubstituted or substituted aliphatic or aromatic hydrocarbon radicals which may contain heteroatoms, and a phenol stabiliser of formula (II); in which R6, R7 and R8 independently denote unsubstituted or substituted aliphatic or aromatic hydrocarbon radicals which may contain OH groups; and X1, X2 and X3 independently denote H or an OH group, provided that at least one of X1, X2 and X3 denote an OH group, and optionally an ultraviolet stabiliser.
EFFECT: low emission of additives and products of decomposition thereof in water.
20 cl, 2 tbl, 2 ex
SUBSTANCE: method includes introduction of non-modified bitumen into a reservoir, equipped with a mixing device, and bitumen heating up to the temperature from 120 to 300°C. Then a blowing additive is added into a reservoir, and the mixture is mixed. Besides, the specified blowing additive has a common formula Ar1-R-Ar2. Invention also relates to a bitumen base of blown type produced by this method. The bitumen base is used to make a bituminous binder, and together with a road filler is used for road surface, asphalt mixtures, a gravel emulsion and a wear layer. The bitumen base is also used to make a sealing membrane, a membrane or impregnation layer. Method makes it possible to produce the bitumen base of required quality without necessity of pre-modification of the initial bitumen. The produced bitumen is more resistant as regards ageing, less brittle, has proper adhesiveness and hot viscosity compared to ordinary blown bitumen. Its workability in hot condition is comparable to workability of the initial bitumen in hot condition.
EFFECT: improved properties of the bitumen base.
16 cl, 2 dwg, 4 tbl, 3 ex
SUBSTANCE: rubber mixture has the following composition in pts. wt: fluorinated rubber SKF-26 65-68, low-molecular weight fluorinated rubber SKF-26 ONM 32-35, magnesium oxide 9.5-10.0, barium sulphate 13.0-13.5, calcium fluoride 10, calcium hydroxide 0.12, resorcinol 0.55, triethylbenzylammonium chloride 0.3, technical carbon N660 0.4, carnauba wax 1.0, ethyl alcohol 0.8.
EFFECT: improved dispersability of components of the mixture, low viscosity, reduced hardness of vulcanised rubber, while preserving resistance to aggressive liquids and accumulation of residual compressive deformation.
3 tbl, 2 ex
SUBSTANCE: perfluoro-elastomer composition contains perfluoro-elastomer, organic peroxide, pre-vulcanisation inhibitor and sodium stearate. Invention enables to obtain a perfluoro-elastomer composition with excellent processability and low-probability pre-vulcanisation. The article moulded from perfluoro-rubber is obtained from thermal cross-linking the perfluoro-elastomer composition.
EFFECT: disclosed article has high ultimate tensile strength and ultimate elongation and low residual compressive deformation.
12 cl, 1 tbl, 7 ex
SUBSTANCE: invention relates to use of an antioxidant to increase resistance of a polyolefin composition meant for making pipes to decomposition caused by contact with water, which contains CIO2. The antioxidant is selected from a) a group of phenols of formula I, where R is an unsubstituted or substituted aliphatic or aromatic hydrocarbon radical which can contain heteroatoms, or R is a heteroatom, R' and R" independently denote an unsubstituted or substituted hydrocarbon radical which can contain heteroatoms, or H, X1, X2 and X3 independently denote an unsubstituted or substituted hydrocarbon radical which can contain heteroatoms, or H or OH, where at least X1, X2 or X3 is OH, n assumes values from 1 to 4, and at least one of the phenol substitutes R, R' and/or R" contains at least one sulphur, phosphorus and/or nitrogen heteroatom or from b) amine compounds of formula II, where R1, R2, R3, R4, R5 and R6 independently denote a hydrogen atom or an aliphatic or aromatic hydrocarbon radical, possibly containing heteroatoms, or selected from c) sulphur-containing compounds of formula Ra-S-Rb III, where Ra and Rb independently denote an aliphatic or aromatic hydrocarbon radical, possibly containing heteroatoms.
EFFECT: antioxidant used has low susceptibility to extraction with water carried by a pipe made from such a polyolefin composition.
7 cl, 1 tbl, 2 ex
SUBSTANCE: addition of a stabilising amount of a mixture to high density polyethylene, where the said mixture contains 4,4'-bis(α,α-dimethylbenzyl)diphenylamine and sterically hindered phenol, enables to increase resistance to decomposition caused by chlorinated water.
EFFECT: pipes made from such a stabilising composition are suitable for conveying hot water, particularly chlorinated water.
6 cl, 3 ex
FIELD: polymer materials.
SUBSTANCE: mixture, in particular, is stabilized by system containing lactone, spatially hindered phenol, and phosphite. Mixture can be processed at temperature above 330°C resulting in increased heat resistance of optical data carriers without loss in molecular weight of polymer.
EFFECT: improved heat-resistance characteristics.
9 cl, 2 tbl