Method for preparation of paper and paper for use in electrophotographic or digital offset printing technologies

FIELD: textile, paper.

SUBSTANCE: method of paper preparation includes application of aqueous dispersion onto paper. Aqueous dispersion comprises one or more copolymers of ethylene with acrylic acid and one or more N,N-dialkylalkanolamines in amount suitable for efficient dispersion of water dispersion including dispersed solid substances with average particle size of less than approximately 100 nm. Specified aqueous dispersion does not contain hydroxides of alkaline metals. Paper is also described for use in electrophotographic or digital offset printing technologies.

EFFECT: paper has improved adhesion of toner.

22 cl, 2 tbl, 6 ex

 

The technical FIELD

The present invention relates to the dispersion of the neutralized copolymers of ethylene and acrylic acid and the use of these dispersions in the preparation of substrates to receive images in electrophotographic and digital offset printing.

PRIOR art

Offset printing liquid toner Indigo is a hybrid of electrophotographic printing and offset printing. Electrophotographic printing generally involves charging the photosensitive receptor drum, laser scanning of the image or the text area of the surface of the photosensitive receptors, the deposition of charged toner particles on the surface of the image receptive photosensitive drum to develop a latent image, transferring the toner image from the photosensitive receptor drum on a charged substrate such as paper and the final thermal fixing of the toner particles on the surface of the paper when heated and under pressure. Offset printing simply means that there is an intermediate offset cylinder, which transfers the image shown by the ink or toner on the final substrate (e.g. paper).

In most electrophotographic printers use particles of a dry powder toner, which is consists of a colored pigment, the device to charge and a binder polymer. For such toners there is a minimum size limit of particles comprising from 7 to 9 μm, because if the particles are smaller, they become volatile in the press. This leads to problems with printing and can cause health problems for printers. Larger particles of toner violate the print quality due to their inability to reproduce fine detail and acceptable color. Therefore, high quality images cannot be printed using an electrophotographic printer with a dry toner.

The compositions of liquid toner containing toner particles ranging in size from 1 to 2 microns, because the solvent in the composition prevents them from escaping. Images obtained using such toners have a higher quality because of their ability to accurately transferred to the photosensitive receiving surface. The solvent in the compositions of liquid toners must be removed either by evaporation before the transfer of the toner to the surface of the paper or drying after the toner I put on paper. During digital offset printing (for example, printer HP Indigo) thermal offset cylinder fitted between the photosensitive plate cylinder and the surface of the paper, which is located on the reverse side of the printing cylinder. Liquid toner is heated on setnum cylinder, in order, firstly, to make the pigmented particles in the liquid toner to melt and solutionat in a homogeneous mixture, and then to evaporate the solvent, when the offset cylinder transfers the liquid toner to the paper surface. When the liquid toner is in contact with a cool paper surface, it becomes viscous enough to adhere to the paper and immediately to harden to provide a quick print. Thermal offset in the Indigo printer has two advantages compared with the electrophotographic printing dry powder: the paper is not required conductivity in order to make the toner, and is not required under melt the particles of dry toner on the surface of the paper.

The lack of adhesion of the toner was a problem for both electrophotographic and digital offset printing. The lack of adhesion of the toner is extremely useful in digital offset printing due to the lack of stage melting to consolidate the particles of the liquid toner on the surface of the paper. Weak adhesion of the toner leads to incomplete transfer of the toner to the surface of the paper, leaving a residue on the blanket cylinder, and to the low resistance of the printed image and its removal during subsequent processing operations. For application to the surface of the paper layer polyethylenimine enhancing adhesion of liquid toner used by the C called sapphire processing. But sapphire treatment has drawbacks, including limited term storage of paper from six to eight months, yellowing, the need to apply coating to an additional stage after manufacture of paper and trend image, obtained by using toner to abrasion during finishing and transportation.

The use of a copolymer of ethylene and acrylic acid in the fabrication of a suitable substrate for digital offset printing has been disclosed, for example, in EP 1273975 and 0789281. Usually before applying on a substrate a polymer is dispersed in water. However, the polymers are not dispersed in the acid form, and should at least partially neutralized to prepare a stable aqueous dispersion with low viscosity and particles of a suitable size.

Dispersions of copolymers of ethylene and acrylic acid was prepared using amines, such as ammonia and monoethanolamine, hydroxides of alkali metals, hydroxides of alkaline-earth metals and mixtures of amines and strong bases. See U.S. patent№№3389109, 3872039, 3899389, 4181566, 5206279 and 5387635. The preparation of an aqueous dispersion of a copolymer of polyethylene and acrylic acid (20 wt.% acrylic acid) in aqueous solution of sodium hydroxide and ethanolamine as described in example 19 of U.S. patent No. 5387635. However, the variance of the same polymer, prigot is undertaken in ethanolamine, unstable, and, as confirmed by monitoring the viscosity of the dispersion increases dramatically the next day.

Accordingly, there is an urgent need for improvement of the surface treatment of paper for digital offset printing with the use of the compositions of liquid toners. These treatments should increase stability, improve the adhesion of the toner to have the ability to the application during the production of paper, have good stability and prevent yellowing under the action of sunlight.

SUMMARY of the INVENTION

According to one embodiments of the invention proposed aqueous dispersion comprising one or more copolymers of ethylene and acrylic acid and an effective dispersing amount of one or more N,N-dialkylanilines.

According to another embodiment of the invention, a method for preparing aqueous dispersion of a copolymer of ethylene and acrylic acid, comprising mixing one or more copolymers of ethylene and acrylic acid with an effective dispersing amount of one or more N,N-dialkylanilines in the aquatic environment.

According to the next embodiment of the invention, a method for preparing a substrate for use in electrophotographic or digital offset printing technologies, including the application under which oku water dispersion, comprising one or more copolymers of ethylene and acrylic acid, and an effective dispersing amount of one or more N,N-dialkylanilines.

Also in this invention, the proposed substrate for use in electrophotographic printing technology, including one or more polymers of ethylene and acrylic acid and one or more N,N-dialkylanilines.

In contrast to the copolymers of ethylene and acrylic acid, neutralized with ammonia, where, during processing, the ammonia is released into the atmosphere, resulting in separation of the polymer from the aqueous phase, this separation does not occur with dispersions, neutralized with N,N-dialkylacrylamide according to the invention, due to the higher boiling point of N,N-dialkylanilines (136°C for N,N-dimethylethanolamine). Additionally, compared with dispersions of copolymers of ethylene and acrylic acid hydroxides of alkali metals, such as KOH, NaOH and LiOH, and the like, hydroxyl group, N,N-dialkylanilines provides improved adhesion of the polymer to the substrate, since a hydroxyl group capable of forming hydrogen bonds as a donor and as an acceptor. Moreover, the hydroxyl functional group allows the product according to the invention in a subsequent reaction with other functional groups, such as anhydrite is, epoxy, isocyanate, with the formation of covalent bonds, resulting in a higher adhesion.

DETAILED description of the INVENTION

Copolymers of ethylene and acrylic acid according to this invention is prepared free-radical polymerization of ethylene and acrylic acid, and possibly one or more additional Ethylenediamine monomers. See, for example, U.S. patent No. 6482886 and 5387635 and the links. Examples of additional monomers include methacrylic acid, maleic acid and andgrid, taconova acid, fumaric acid, cretonne easy acid and citraconate acid and anhydride, hydrometallation, hydroacylation, propylene, butene, isobutene, butadiene, isoprene, styrene, α-methylsterols, t-butalbiral, acrylate, methyl methacrylate, ethyl methacrylate, methyl acrylate, isobutylacetate and methylvalerate, vinyl acetate, finalproject, vinylbenzoate, vinyl chloride and vinylidenechloride, acrylamide, Acrylonitrile, Methacrylonitrile, fumaronitrile and similar compounds.

According to the embodiment of the invention is a copolymer of ethylene and acrylic acid comprises from about 5 to 30 mole percent of the monomers of acrylic acid.

According to the embodiment of the invention is a copolymer of ethylene and acrylic acid comprises from about 5 to 20 mole percent of the monomers of acrylic acid.

According to the embodiment and is gaining a copolymer of ethylene and acrylic acid comprises from about 14 to 20 mole percent of the monomers of acrylic acid.

According to the embodiment of the invention is a copolymer of ethylene and acrylic acid comprises from about 5 to 25 weight percent of the monomers of acrylic acid.

According to the embodiment of the invention is a copolymer of ethylene and acrylic acid comprises from about 14 to 25 weight percent of the monomers of acrylic acid.

Molecular weight copolymers of ethylene and acrylic acid, suitable for aqueous dispersions according to this invention, designated in the form of a melt index (IR). The melt index is measured according to the American standard test method ASTM D 1238 Condition E (190°C/2,16 kg), if not reported otherwise.

According to the embodiment of the invention, copolymers of ethylene and acrylic acid have a melt index from about 10 g/10 min to 3000 g/10 minutes

According to the embodiment of the invention, copolymers of ethylene and acrylic acid have a melt index from about 10 g/10 min to 2500 g/10 minutes

According to the embodiment of the invention, copolymers of ethylene and acrylic acid have a melt index from about 10 g/10 min to 200 g/10 minutes

On the market are suitable copolymers of ethylene and acrylic acid, for example from the company Dow Chemical, Midland.

The aqueous dispersion according to the invention is prepared by reaction of a copolymer of ethylene and acrylic acid with an effective dispersing amount of one or more N,N-dialkylanilines. Effective the second dispersion amount" means the amount of N,N-dialkylanilines, required for at least partial neutralization of the copolymer of ethylene and acrylic acid to obtain a stable aqueous dispersion with the desired viscosity and particle size.

The neutralization reaction is usually carried out at a temperature of about 130°C, typically at a temperature of from about 120°C to 130°C in the presence of N,N-dialkylanilines suitable for obtaining a water dispersion comprising dispersed solids with an average particle size of less than approximately 100 nm.

According to the embodiment of the invention the aqueous dispersion is prepared by reaction of a copolymer of ethylene and acrylic acid with approximately 0.2 to 1.4 molar equivalents of one or more N,N-dialkylanilines in the aquatic environment.

According to the embodiment of the invention the aqueous dispersion is prepared by reaction of a copolymer of ethylene and acrylic acid with about 0.5 to 1.4 molar equivalents of one or more N,N-dialkylanilines in the aquatic environment.

According to the embodiment of the invention the aqueous dispersion is prepared by reaction of a copolymer of ethylene and acrylic acid of from about 0.8 to 1.2 molar equivalents of one or more N,N-dialkylanilines in the aquatic environment.

Suitable N,N-dialkylacrylamide have the formula R1R2NR3OH, in which R1and R2are straight or branched alkyl groups having from 1 is about 4 carbon atoms, and R3represents a straight or branched alkylene having from 1 to about 4 carbon atoms.

According to the embodiment of the invention N,N-dialkylacrylamide selected from the group consisting of N,N-dimethyl-2-(2-aminoethoxy)ethanol, N,N-diethylethanolamine, N,N-dimethylethanolamine, N,N-dimethylethanolamine, N,N-dibutylethanolamine and N,N-diisopropylethylamine.

According to the embodiment of the invention N,N-dialkylaminoalkyl is N,N-dimethylethanolamine.

According to the embodiment of the invention, the aqueous dispersion comprises from about 5 to 40% wt. one or more copolymers of ethylene and acrylic acid.

According to the embodiment of the invention, the aqueous dispersion comprises from about 10 to 30% wt. one or more copolymers of ethylene and acrylic acid.

According to the embodiment of the invention, the aqueous dispersion comprises from about 14 to 20% wt. one or more copolymers of ethylene and acrylic acid.

According to the embodiment of the invention, copolymers of ethylene and acrylic acid selected from the group consisting of copolymers of ethylene and acrylic acid.

According to the invention, a method for preparing a substrate for use in electrophotographic or digital offset printing technologies, including the application to the substrate aqueous dispersion comprising from about 5 to 40 wt.% one or more copolymers which telena and acrylic acid, and about from 0.2 to 1.4 molar equivalents, based on the monomer of acrylic acid, one or more N,N-dialkylanilines.

Suitable substrates include any sheet substrate for printing, is able to retain on their surface a polymer of ethylene and acrylic acid, described in this application, including, for example, paper, including coated paper for art printing, coated paper, paper cardboard and other, film, non-woven material, etc.

As used in the present description, the term "film" means a sheet substrate made of an organic polymer such as a film of viscose, acetate, polyethylene, polypropylene, poly(vinyl chloride), polystyrene, nylon, polycarbonate, poly(ethyleneterephthalate)or poly(butilstearat).

The term "nonwoven" means a sheet substrate, which is made of fibrous material such as wood pulp, cotton, rayon, poly(ethyleneterephthalate), poly(butilstearat), polyacrylonitrile or polypropylene is widely known methods, such as spinning and linking technology or paper technology.

According to the embodiment of the invention the substrate is paper.

The aqueous dispersion can be applied to the substrate by any of numerous known methods that provide evenly the shelter of the substrate. For example, the aqueous dispersion can be applied to the substrate by dipping, spraying, bar or roller, or by using equipment, such as size press, a device for coating with a doctor blade, gruntovalnoy machine, machine for applying bar to remove excess, machine for applying air scraper, a device for coating irrigation and so on.

The aqueous dispersion can be applied to the substrate alone, or in combination with any number of additives used to enhance the properties of the sheet. Such additives include starch, polyvinyl alcohol, carboxymethylcellulose, guar, fillers and pigments, such as clay and calcium carbonate, binders, dyes, optical brighteners, crosslinking agents, antifoaming agents, antistatic agents, dispersing agents, thickeners, etc. Additives can be applied to the substrate before, during, and after application of the aqueous dispersion of a copolymer of ethylene and acrylic acid.

According to one embodiments of the invention the additive is a starch.

According to the embodiment of the invention the starch is chosen from ethylene, oxide and cationic starch. Examples of suitable ethylene, oxide and cationic starches include, but are not limited to, leaded corn starch, modified by the enzyme oxidized, Brahma is, Quaternary ammonium derivatives, cationic starch, primary, secondary and tertiary amino derivatives of cationic starch and other nitrogen-substituted derivatives, cationic starch, and sulfonamide and postname derived cationic starch.

According to the embodiment of the invention additives included in the formulation of aqueous dispersion of a copolymer of ethylene and acrylic acid of the present invention. The composition can be prepared by mixing the dispersion with a solution of starch or other additives in the preparation of formulations for size press. Painted compositions containing neutralized copolymers of ethylene and acrylic acid, can be prepared in accordance with the procedures in the paper coating.

All the above will become more clear when considering the following examples, which in this case have the purpose of clarification, but do not limit the scope of patent claims of the present invention.

Example 1

The preparation of an aqueous dispersion of a copolymer of ethylene and acrylic acid and ionomers of dimethylethanolamine

Bomb the Parr reactor with a volume of 300 ml equipped with a cylinder reactor with a mixing rod, which is connected with the driving motor. In addition, the head of the reactor equipped with a thermocouple, pressure gauge, release valve and sites for sampling. On paramasivam the m terminal is equipped with two agitators; one near the surface of the reaction mixture, and the other at the end of the rod for maximum mixing. In the reactor Parra added to 20.0 g of a copolymer of ethylene and acrylic acid (melt index 65, 15% of a monomer of acrylic acid, sold by The Dow Chemical Company, Midland, MI under article XUS60751.18) and a mixture of deionized water (175,57 g), dimethylethanolamine (DMEA, 4,46 g from Alfa Aesar, Ward Hill, MA, or from Huntsman Performance Chemicals, The Woodlands, TX), span 60 (Span 60) (0,77 g) and tween 60 (Tween 60) (1,26) - both from Uniqema, New Castle, DE. Then the reactor is closed with bolts and install Parra placed in a heating mantle. The stirring speed increases gradually up to 800 Rev/min the Temperature of the reaction mixture increases gradually up to 120°C and support between 120 and 130°C for 3 hours. After the reaction, the reactor is cooled to room temperature, and the product poured into a plastic container. Not quite white, slightly turbid reaction product has a pH 10,22.

Example 2

Comparative example

The neutralized dispersion of a copolymer of ethylene and acrylic acid prepared as described in example 1, except that dimethylethanolamine replaced by ammonium hydroxide. The resulting reaction product is not white, is heterogeneous and contains a lot of flakes. Its pH is 10,44.

Example 3

The preparation of an aqueous dispersion of a copolymer of ethylene and acrylic acid and monomer d is methylethanolamine

The rector in this case is the same as in example 1. In the reactor is added 30.0 g of a copolymer of ethylene and acrylic acid (melt index 65,15% of a monomer of acrylic acid, as in example 1) and a mixture of deionized water (163,31 g), DMAA (6.69 in). The reactor is then tightly closed with a lid and clamp bolts, and installation Parra placed in a heating mantle. The stirring speed increases gradually up to 800 Rev/min the Temperature of the reaction mixture increases gradually up to 120°C and support between 120 and 130°C for 3 hours. After the reaction, the reactor is cooled to room temperature, and the product poured into a plastic container. Not quite white, slightly turbid reaction product has a pH of 10. The average particle size of the reaction product measured by analysis of light scattering, is about to 23.2 nm.

Example 4

The preparation of an aqueous dispersion of a copolymer of ethylene and acrylic acid and ionomers of dimethylethanolamine

The rector in this case is the same as in example 1. In the reactor is added 30.0 g of a copolymer of ethylene and acrylic acid (melt index 18, 14.8% of the monomer of acrylic acid, sold by The Dow Chemical Company, Midland, MI under article XUS60568.05) and a mixture of deionized water (163,31 g), DMAA (6,90 g). The reactor is then tightly closed with a lid and clamp bolts, and installation Parra placed in a heating mantle. The mixing speed increase is gradually to 800 rpm The temperature of the reaction mixture increases gradually up to 120°C and support between 120 and 130°C for 3 hours. After the reaction, the reactor is cooled to room temperature, and the product poured into a plastic container. Translucent, slightly turbid reaction product has a pH of 10. The average particle size of the reaction product measured by analysis of light scattering, is about to 75.8 nm.

Example 5

Preparation of compositions for application and processing of the base sheet

The base paper used in this example is a plain sheet of paper out of wood pulp with the main mass of about 85 g/m2. For application of the composition on the base paper use drop bar #5 size (21,59 x 30,48) cm (8.5"×12"). Then the wet sheet is dried in a drum dryer production Adironack Machine Company, Queensbury, N.Y. Both sides of the base paper is treated to reduce Curling of the paper and ensure the workability of paper in the machine. Removal of the coating is approximately 9,072 kg/t of paper (20 lb/ton of paper). Samples of the compositions shown in table 1.

Table 1
Samples of compositions for coating
no song to cover (Active) parts of Dispersion1Part PG2802Deionized water, part
10892
28092
36,41,692
47,20,892
1Aqueous dispersion of a copolymer of ethylene and acrylic acid, prepared in accordance with the method according to example 4.
2Leaded starch manufactured and sold by the company Penford Products, Cedar Rapids, IA.

Example 6

Quality assessment of digital offset printing Indigo

In this example, use coated paper produced in example 5. Printing machinery used for printing, this Sheet machine HP Indigo 3000. For printing using four-color printing object, which includes cyan, Magenta, yellow and black colors. The tape with the sticky layer of Scotch Drating Tape 230 width of 2.54 is m (1") was placed on the printed colorful object 15 minutes after printing, and the sheet with the sticky tape was laid between two rubber gaskets. 0,907 kg (2 pound) cushion rolled back and forth on the reverse surface of the strip and the tear tape at an angle of about 45 degrees. The area of the tear tape in the printed object is scanned and analyzed using image analysis. The adhesion of the toner is expressed as the percentage of toner coverage after separation. The adhesion of the toner in the percentages shown in table 2.

Table 2
Data on adhesion of toner on the printed sheets
no songs coverEat coating kg/ton (lb/t)BlackBlueMagentaYellow
111,239 (24,8)71,7to 89.572,463,5
29,933 (21,7)10098,799,7100
39,072 (20,0) 10099,299,799,9
410,251 (22,6)100100100100

The data presented in table 2, demonstrate that it is possible to achieve almost perfect adhesion of the toner of any color paper processed samples of the compositions according to the invention.

In the compositions, the work and the layout method according to the described invention can be made without departure from the concept and scope of the invention as described in the claims.

1. Method of preparing paper having improved adhesion of the toner in electrophotographic or digital offset printing technologies, including drawing on paper water dispersion containing one or more copolymers of ethylene with acrylic acid and one or more N,N-dialkylanilines in quantities suitable for effective dispersion aqueous dispersion comprising dispersed solids with an average particle size less than about 100 nm, where this aqueous dispersion does not contain hydroxides of alkali metals.

2. The method according to claim 1, where the aqueous dispersion comprises from about 5 to 40 wt.% one or more the copolymers of ethylene with acrylic acid.

3. The method according to claim 1, where the aqueous dispersion comprises about from 0.2 to 1.4 molar equivalents per monomer of acrylic acid, one or more N,N-dialkylanilines.

4. The method according to claim 1, where the copolymer of ethylene and acrylic acid comprises from about 5 to 30 mol.% monomers of acrylic acid.

5. The method according to claim 1, where the copolymer of ethylene and acrylic acid comprises from about 5 to 20 mol.% monomers of acrylic acid.

6. The method according to claim 1, where the copolymer of ethylene and acrylic acid comprises from about 14 to 20 mol.% monomers of acrylic acid.

7. The method according to claim 1, where the copolymer of ethylene and acrylic acid comprises from about 5 to 25 wt.% monomers of acrylic acid.

8. The method according to claim 1, where the copolymer of ethylene and acrylic acid comprises from about 14 to 25 wt.% monomers of acrylic acid.

9. The method according to claim 1, where the copolymers of ethylene and acrylic acid have a melt index from about 10 to 3000 g/10 minutes

10. The method according to claim 1, where the copolymers of ethylene and acrylic acid have a melt index from about 10 to 2500 g/10 minutes

11. The method according to claim 1 where the copolymer of ethylene and acrylic acid have a melt index from about 10 to 200 g/10 minutes

12. The method according to claim 1, where N,N-dialkylacrylamide selected from the group consisting of N,N-dimethyl-2-(2-aminoethoxy)ethanol, N,N-diethylethanolamine, N,N-dimethylethanolamine, N,N-dimethylamino the amine, N,N-dibutylethanolamine and N,N-diisopropylethylamine.

13. The method according to claim 1, where N,N-dialkylaminoalkyl is N,N-dimethylethanolamine.

14. The method according to claim 1, where the aqueous dispersion comprises about from 0.5 to 1.4 molar equivalents per monomer of acrylic acid, one or more N,N-dialkylanilines.

15. The method according to claim 1, where the aqueous dispersion comprises about from 0.8 to 1.2 molar equivalents per monomer of acrylic acid, one or more N,N-dialkylanilines.

16. The method according to claim 1, where the aqueous dispersion comprises from about 10 to 30 wt.% one or more copolymers of ethylene with acrylic acid.

17. The method according to claim 1, where the aqueous dispersion comprises from about 14 to 20 wt.% one or more copolymers of ethylene with acrylic acid.

18. The method according to claim 1, where the copolymers of ethylene with acrylic acid selected from the group consisting of copolymers of ethylene with acrylic acid.

19. The method according to p, where N,N-dialkylaminoalkyl is N,N-dimethylethanolamine.

20. The method according to claim 1, where the aqueous dispersion additionally contains one or more additives selected from the group consisting of starch, polyvinyl alcohol, carboxymethyl cellulose, guar, pigments, binders, dyes, optical brighteners, crosslinking agents, antifoaming agents, antistatic agents, dispersants, and thickeners.

21. The way what about the claim 20, where the additive is starch.

22. Paper for use in electrophotographic or digital offset printing technologies, treated by an aqueous dispersion containing one or more copolymers of ethylene with acrylic acid and one or more N,N-dialkylanilines in quantities suitable for effective dispersion aqueous dispersion comprising dispersed solids with an average particle size less than about 100 nm, where this aqueous dispersion does not contain hydroxides of alkali metals.



 

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2 cl, 4 ex, 6 dwg

FIELD: chemistry.

SUBSTANCE: rubber mix is prepared from butadiene-nitrile rubber BNKS-18 AMN with addition of powdered ultra-high-molecular-weight polyethylene (UHMWPE) in the following ratio of components, wt %: BNKS-18 AMN butadiene-nitrile rubber 40-46.3; SKMS-10 RKP rubber 19.0; stearine 0.54; zinc white BT-M 1.63; sulphur 0.54; diaphene FP 0.54; paraffin 0.54; dibutylphthalate 3.2; technical rubber P-701 25-31.3; UHMWPE 1.63; sulfenamide T 0.54; thiuram 0.54.

EFFECT: high oil and moisture resistance and frost resistance of cushion pads.

1 tbl

FIELD: chemistry.

SUBSTANCE: rubber mix is prepared from butadiene-nitrile rubber BNKS-18 AMN with addition of powdered ultra-high-molecular-weight polyethylene (UHMWPE) in the following ratio of components, wt %: BNKS-18 AMN butadiene-nitrile rubber 40-46.3; SKMS-10 RKP rubber 19.0; stearine 0.54; zinc white BT-M 1.63; sulphur 0.54; diaphene FP 0.54; paraffin 0.54; dibutylphthalate 3.2; technical rubber P-701 25-31.3; UHMWPE 1.63; sulfenamide T 0.54; thiuram 0.54.

EFFECT: high oil and moisture resistance and frost resistance of cushion pads.

1 tbl

FIELD: construction.

SUBSTANCE: foam maker contains resin and surfactant. Resin is represented by rosin saponified by caustic soda or caustic potash. Surfactant is represented by one or several substances selected from primary alkyl sulfates, alkyl-etoxysulfates, alkyl-dimethylcarboxybetaine, cocamidopropyl betaine, oxides of alkyl dimethylamine, alfa-olefin sulfonates, secondary alkyl sulfates. Foam maker additionally contains organic dissolvent. Organic dissolvent is selected from group of lower primary alcohols or products of their oxyethylation or hydroxypropylation. Minimum total content of rosin soap and surfactant in foam maker makes 4.0 wt %.

EFFECT: production of stable foams in cement grout with multiplication factor of at least 15.

7 cl, 5 tbl

FIELD: electricity.

SUBSTANCE: electrolyte is described, which contains eutectic mixture made of the following components: (a) compound having amide group; and (b) ionised salt that does not contain lithium. Also electrochemical device is described, which contains electrolyte. In addition, since eutectic mixture is characterised by superb thermal and chemical resistance, there is a possibility to solve problems of evaporation, exhaustion and inflammability of electrolytes, minimising side reactions between structural elements of device and electrolyte and improvement of electrochemical device safety.

EFFECT: electrolyte improved quality of electrochemical device due to superb specific conductivity by cation of metal contained in eutectic mixture, wide electrochemical window and low viscosity.

21 cl, 9 ex, 1 tbl, 3 dwg

FIELD: chemistry.

SUBSTANCE: invention concerns colourant substances creating scale effect on plastic. Invention claims composition for plastic dyeing, where one or more colourants creating scale effect is mixed with at least partially polarised carrier material. Also invention claims method of obtaining colourant composition and its application in plastic colouring and in obtaining concentrated colourant.

EFFECT: prevented dust collection, easy flowing, increased material amount in extrusion process by double-rotor extruders and higher output of concentrated colourants in single-rotor extruders.

10 cl, 4 ex

FIELD: medicine.

SUBSTANCE: invention refers to polymers producing hydrogel and absorbing aqueous liquids, based on acid group carrying polymers produced by polymerisation of monoethylenoid-nonsaturated carboxylic acids with 3-25 carbon atoms, containing α-tocopherol as stabilising additive. Purpose of present invention is production of superabsorber with application as stabilising additive of native monomers of health-hazardless substance, as well as reduced duration of induction and production of superabsorber which does not have undesired colouring. Purpose in view is provided by the fact that as stabilising additive monoethylenoid-nonsaturated carboxylic acids with 3-25 carbon atoms, α-tocopherol is used; therefore duration of an induction of polymerisation is reduced, provided production of polymer which acts as superabsorber, having required colouring.

EFFECT: present invention concerns method of production of such polymers, their application for aqueous liquids absorption, specifically in hygienic products.

10 cl, 2 ex

FIELD: organic chemistry; chemical industry; other industries; production of the biocidal compositions and their application.

SUBSTANCE: the invention is pertaining to the synergistic biocidal compositions and to the compositions dissolving sulfides of metals. The biocidal composition or the composition dissolving the iron sulfide includes (i) THP-salt and (ii) the biopenetrant. The biopenetrant represents the polymer of the non-saturated carboxylic acid or the interpolymer of the non-saturated carboxylic acid with the vinyl-sulfonic acid. At that the end groups of the indicated polymer or the interpolymer are the groups of the vinyl-sulfonic acid (VPA) or vinyliden-1,1 of the diphosphin acid (VDPA), either the indicated polymer or the interpolymer contains such monomers inserted into the main chain of the macromolecule. The present composition synergistically increases the biocidal effectiveness of the THP-salt concerning both the planktonic (free-floating) and the motionless (affixed) bacteria, and also synergistically increases the effectiveness of THP-salt in dissolution of the scale of iron sulfide. The invention also describes the application of the indicated composition in the capacity of the biocide or for dissolution of the metal sulfide and the method of treatment of the water system infected or inclined to be Infected by the micro-organisms such as bacteria, fungi, or algae with usage of the indicated composition, and the method of treatment of the water system containing the metal sulfide scale or being in contact with the metal sulfide scale, with usage of the indicated composition.

EFFECT: the invention ensures, that the biocidal compositions synergistically increase the biocidal effectiveness of the THP-salt concerning the free-floating and motionless bacteria and the increased effectiveness of THP-salt in dissolution of the iron sulfide scale.

18 cl, 5 ex, 3 tbl

FIELD: production of a plasticine.

SUBSTANCE: the invention is pertaining to the field of production of the plasticine used for a molding and modeling. The plasticine consists of a plasticizing agent, paraffin, a pigment, a low molecular polyethylene and the filler representing a starch. The combination of the components in a fixed relationship ensures an increase of a coloring power and an increased softness of the plasticine.

EFFECT: the invention ensures an increase of a coloring power and an softness of the plasticine.

1 tbl

FIELD: polymer production.

SUBSTANCE: invention relates to water-soluble powder polymer compositions useful as flocculants for dehydration of solids-containing slurries or sludges. Compositions are prepared via continuous polymerization of at least one unsaturated monomer, wherein at least one polymerization-affecting parameter is varied in accordance with a repetitive scheme. For instance, monomer concentration, molecular weight regulator amount, monomer solution pH value, and/or monomer solution composition can be varied.

EFFECT: expanded flocculation possibilities and reduced sensitivity to composition of fluids to be treated.

14 cl, 4 ex

The invention relates to the field of solid state ionic conductors, namely, polymer electrolytes

The invention relates to thermoplastic molding mass containing 20-90 wt.h

The invention relates to polymer chemistry, more specifically, firstly, to water-soluble copolymers containing in the structure a nitrogen atom, secondly, to get in solid form, easy grinding and easily soluble in water compositions based on water-soluble Homo - and copolymers containing in the structure a nitrogen atom, thirdly, to a method for producing compositions of water-soluble Homo - and copolymers

FIELD: chemistry.

SUBSTANCE: biodegradable thermoplastic composition contains cellulose diacetate containing 56.4% acetate groups, in amount of 25 pts. wt, biodegradable filler - starch in amount of 40-45 pts. wt, hydrolysed lignin in amount of 5-10 pts. wt and a plasticiser in amount of 25 pts. wt. The plasticiser is a mixture of dioxane alcohols and their high-boiling esters, obtained through distillation a light fraction with boiling point of 115-160°C from a floatation agent-oxal at pressure 5-10 mm Hg in amount of 25 pts. wt.

EFFECT: composition has good operational characteristics, articles made from said composition are biodegradable under the effect of natural factors.

1 tbl, 4 ex

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