A method of obtaining a polyvinylchloride composition
(57) Abstract:Usage: polymer-based building materials. Essence: polyvinyl chloride (PVC) mixed with chlorinated polyethylene, administered at 5 - 15% solution in carbon tetrachloride. The process is carried out at 40 - 50oC in aqueous medium in the presence of ionogenic emulsifier. The latter is introduced into the composition of emulsion PVC or add to the mixture containing suspension PVC, in the amount of 0.2% of water. table 1. The invention relates to the field of modification of plastics, namely, the method of production of compositions based on polyvinyl chloride and chlorinated polyethylene, employees polymer basis for the manufacture of window frames, water troughs and other parts used in construction.A method of obtaining legkoperevarivaemye compositions based on polyvinyl chloride and chlorinated polyolefins, in particular, chlorinated polyethylene, by mixing the powdered components 
The disadvantage of this method is the need for prior separation, drying and grinding chlorinated polyethylene.The closest in technical essence is the JV shall Inishmore on stage latex, followed by separation of the composition to the spray dryer 
The disadvantages of this method is a complex process associated with the need to obtain a powder of polyethylene and the impossibility of obtaining a polymer composition containing more than 0.9 wt. chlorinated polyethylene.The purpose of the invention is the simplification of the process by eliminating the stages of separation, drying and grinding for obtaining powdered chlorinated polyethylene, as well as a more profound modification of polyvinyl chloride by the introduction of more chlorinated polyethylene.This objective is achieved in that the composition based on polyvinyl chloride and chlorinated polyethylene is produced by mixing the aqueous suspension of polyvinyl chloride with a solution of chlorinated polyethylene in carbon tetrachloride, taken directly after the stage of chlorination of the polyethylene and the process is conducted in the presence of ionogenic emulsifier, entered into the composition of emulsion polyvinyl chloride or added to the mixture containing the suspension polyvinyl chloride, in amount of 0.2 by weight of water.The increase in the content of the emulsifier more than 0.2 mass. not economically feasible, and the process in the absence of p is icii.Application for obtaining the compositions of the solution of the chlorinated polyethylene in carbon tetrachloride with a concentration of less than 5 is excluded by the fact that the obtaining of lower concentrations of polymer in the production environment is not economically feasible, and work with high-viscosity solutions of a concentration above 15 technically difficult.The displacement components at a temperature below 40oC does not lead to the formation of a homogeneous particle size of the composition, and the temperature increases above the 50oC is not economically advisable.The method allows to obtain compositions containing 85,0 to 99.9 wt. polyvinyl chloride and 0.1 to 15.0 wt. chlorinated polyethylene. The composition is determined by the requirements of specific products. In line with this is the amount added to the aqueous suspension of polyvinyl chloride, chlorinated polyethylene.Example 1. In a two-liter three-neck reactor equipped with a stirrer, dropping funnel and downward fridge, pour 400 ml of water and add 189 g of polyvinyl chloride brand EJ (Kf64,3) with stirring, heated to 50oC and added dropwise within 15 minutes of 315 g of 7-aqueous solution of chlorinated polyethylene is neotrop of carbon tetrachloride with water. The resulting polymer composition is filtered on a Buechner funnel and dried in a vacuum drying Cabinet at 50oC. Get 207,9 g resin composition containing 100 wt. parts polyvinyl chloride 10 wt. parts chlorinated polyethylene. The quantitative output.Example 2. According to the method described in example 1 to produce a mixture of 189 g of polyvinyl chloride brand EJ (Kf64,3) and 15 g 15-aqueous solution of chlorinated polyethylene containing 36, 2% of chlorine in carbon tetrachloride. Get 189,2 g resin composition containing 100 wt. parts polyvinyl chloride 0.1 wt.part of the chlorinated polyethylene. The quantitative output.Example 3. According to the method described in example 1 to produce a mixture of 189 g of polyvinyl chloride brand EJ (Kf64,3) and 405 g of 7-aqueous solution of chlorinated polyethylene containing 36,2 chlorine in carbon tetrachloride. Get 217,4 g of the composition containing per 100 wt.parts polyvinyl chloride 15 wt. parts chlorinated polyethylene. The quantitative output.Example 4. In a two-liter three-neck reactor equipped with a stirrer, dropping funnel and downward fridge, pour 400 ml of water, add 0.8 g (0,2) alkylsulfonate and 189 g polyvinylchloride 15 minutes 360 g of 5-aqueous solution of chlorinated polyethylene containing 37,4 chlorine in carbon tetrachloride. Next, the temperature in the reactor was raised to 85 90oC and distilled azeotrope of carbon tetrachloride with water. The resulting polymer composition is filtered on a Buechner funnel and dried in a vacuum drying Cabinet at 50oC.Get 207,9 g resin composition containing 100 wt. parts polyvinyl chloride 10 wt.parts chlorinated polyethylene. The quantitative output.Example 5. According to the method described in example 4, to produce a mixture of 189 g of polyvinyl chloride brand SM (Kf72) and 2.0 g of 10-aqueous solution of chlorinated polyethylene containing 37,4 chlorine in carbon tetrachloride. Get 189,2 g resin composition containing 100 wt. parts polyvinyl chloride 0.1 wt. part of the chlorinated polyethylene. The quantitative output.Example 6. According to the method described in example 4, to produce a mixture of 189 g of polyvinyl chloride brand SM (Kf72) and 217,4 g 10-aqueous solution of chlorinated polyethylene containing 37,4 chlorine in carbon tetrachloride. Get to 217.5 g of the composition containing per 100 wt. parts polyvinyl chloride 15 wt. parts chlorinated polyethylene. VehicIe based on polyvinyl chloride and chlorinated polyethylene are shown in table.As can be seen from the table, the proposed method allows to obtain a composition containing 15 times the quantity of chlorinated polyethylene, resulting in the formation of polymer base compositions used for the manufacture of window units and other specialized products used in the building materials industry  in Addition, the use of chlorinated polyethylene in the form of its solution in carbon tetrachloride allows you to use this solution, obtained directly after stage chlorination of polyethylene, and to avoid energy-intensive phase separation, drying and grinding chlorinated polyethylene.The sources of information.1. U.S. patent N 3682924, 1971.2. Copyright certificate NRB N 13735, 1971.3. Japanese patent N 61-308759, 1988. A method of obtaining a polyvinylchloride composition by mixing polyvinyl chloride with chlorinated polyethylene, characterized in that the chlorinated polyethylene is injected in the form of 5 to 15% solution in carbon tetrachloride and the process is carried out at 40 to 50oWith in aqueous medium in the presence of ionogenic emulsifier, entered into the composition of emulsion polyvinyl chloride or add to mixture
SUBSTANCE: invention refers to production of modified nanocomposite and polyolefin nanocomposite extender and can be used for materials with desired performance. Modified extender is produced by processing of natural layered silicate in aqueous suspension with two modifying additives added in turn at 60-80°C as prepared aqueous solution with concentration of 0.005-0.010 mol/l. At first aqueous suspension is added with cetyltrimethylammoniumbromide in amount equal to 25-50% of cation-exchange capacity of natural layered silicate, and when cured, added with dioctadecyldimethylammoniumbromide in amount equal to 25-75% of cation-exchange capacity of natural layered silicate. Produced suspension is cured. Extender is dewatered, washed with distilled water and dried. Trace modified extender added to polyolefin allows for considerable increase of produced composite material nanocomposite, including due to conservation of linear dimensions of initial natural layered material.
EFFECT: higher durability of produced composite material.
3 cl, 1 tbl, 5 ex
SUBSTANCE: invention refers to production of modified extender for nanocomposite, and to polyolefin nanocomposite, and can be used for production of materials with preset performance. Production of modified extender includes as follows. Natural layered silicate is processed in aqueous suspension with modifying additive in amount equal to 25-75% of cation-exchange capacity of natural layered silicate. Herewith modifying additive is dioctadecyldimethylammonium bromide added to suspension as aqueous solution concentrated no more than 8.5×10-3 mol/l at 60-80°C. Prepared suspension is cured. Extended is dewatered, washed with distilled water and dried. Trace modified extender added to polyolefin allows for considerably increased durability of produced composite material nanocomposite, including due to conservation of linear dimensions of initial natural layered material.
EFFECT: increased durability of produced composite material.
3 cl, 1 tbl, 5 ex
SUBSTANCE: versions are proposed of a powdered water-absorbing agent, which contains a powdered water-absorbing resin, obtained from a polymer based on partially neutralised polyacrylic acid. The surface of the said powdered water-absorbing resin is cross-linked with at least one cross-linking agent, chosen from a group comprising glycerin, 1,3-propanediol, ethylene carbonate, 3-ethyl-3-hydroxymethyloxetane and ethanolamine. The said water-absorbing resin has a cross-linked internal structure. Content of the said powdered water-absorbing resin is between 70 and 100 wt % per 100 wt % of the said powdered water-absorbing agent. The said powdered water-absorbing agent satisfies several conditions for particle size and sorption characteristics. Proposed also is a method of obtaining a powdered water-absorbing agent and an absorbent structure based on the said agent.
EFFECT: higher absorption capacity compared to traditional absorbent structure and odour reduction.
12 cl, 4 tbl, 13 ex
SUBSTANCE: invention can be used in aerospace, automobile industry, in making optical lenses, surface modifiers of glass fibre. In accordance with the invention, the method involves the following stages: mixing a precursor polymer solution with a precursor nanostructure, with formation of a mixture; formation of a nanostructure in a mixture from the nanostructure precursor; and formation of a polymer from the precursor polymer solution so that, nanostructures are introduced into the polymer matrix. The precursor polymer solution can be polyvinyl alcohol, polyvinylbutyral, poly[bis(diethyleneglycol)diallylcarbonate], trimethylolpropane, methylene-bis(4-cyclohexylisocyanate), thiodiethanol. The nanostructure precursor is monobutyltin trichloride, indium acetate, indium-tin oxide, titanium isopropoxide, titanium dioxide. The nanostructures have a spherical, cubic type of polyhedrons, trihedral, pentagonal shape, diamond shape, rod and disc shaped.
EFFECT: design of an efficient method of producing polymers, the matrix of which contains nanostructures.
SUBSTANCE: procedure consists in discharge of polymer melt from reactor of final poly-condensation. This discharge is performed continuously thus forming unloaded flow of polymer melt. Said flow is hardened forming particles by means of an underwater granulator. Before hardening a part of unloaded flow of melt is supplied into an adjacent jet. There is formed polymer melt of adjacent jet. Additive is supplied to the said melt of adjacent jet forming adjacent jet containing additive. Adjacent jet containing additive is supplied to a place upstream from the place of initial adjacent jet forming at the stage of solidification. Additive is chosen from anti-oxidants, substances absorbing ultra-violet light, deactivators of catalyst metal, dyes reducing amount of acetaldehyde or oxidised compounds raising rate of repeated overheat of additive, additives reducing adhesiveness of bottles facilitating oxygen proofness of materials, and combinations of said substances.
EFFECT: improved process for production of poly-ether particles at low CC (characteristic of conditioning) eliminating solid phase polymerisation for additional increase of molecular weight.
39 cl, 2 dwg
SUBSTANCE: method involves a step for bringing an elastomer solution containing links based on C4-C7 isoolefins in an organic solvent into contact with a halogen to obtain halogenated elastomeric binder, treating a first portion of the binder with a clay dispersion to obtain a concentrated mother solution of the polymer-clay nanocomposite, mixing the mother solution with a second portion of the binder to obtain a halogenated elastomer-clay dispersed nanocomposite mixture, and extraction of the nanocomposite.
EFFECT: obtained nanocomposite has improved air-permeability and can be used as inner coating or tyre tube.
58 cl, 8 dwg, 2 tbl, 8 ex
SUBSTANCE: method involves a step for mixing an aqueous suspension of inorganic clay with a polymer solution, where the polymer contains a link formed from C4-C7-isoolefin, in an organic solvent to form an emulsion which contains a polymer-clay nanocomposite, and involves a step for extracting the nanocomposite from the emulsion.
EFFECT: nanocomposite has improved air impermeability and is suitable for use as a sealing layer or cover.
48 cl, 2 dwg, 8 tbl, 49 ex
SUBSTANCE: method involves drawing a polymer sample - an isotropic film of amorphous or crystalline polymer in an adsorption-active liquid medium in isometric conditions. The dried stretched film is held in a solution of a functional substance in a solvent until pores are filled with possibility of regulating content of the functional substance in the pore system. The solvent used does not cause swelling of the polymer from which the stretched film is made. The solvent is removed by drying. The film is then cut, granulated and used as a polymer additive.
EFFECT: invention provides high degree of dispersion of said functional additives in a polymer matrix.
2 dwg, 5 ex
SUBSTANCE: invention relates to methods of producing anti-turbulence additives in form of suspensions and can be used in pipeline transportation of oil and oil products pumped in turbulent flow conditions. The method involves (co)polymerisation of higher C6-C14 α-olefins on Ziegler-Natta catalysts, grinding the obtained ultra-high molecular weight poly-α-olefin at cryogenic temperature and mixing it with a parting agent and a suspension medium. Grinding is carried out on a pulsed electric apparatus. The suspension contains, as a parting agent, calcium stearate and as a suspension medium a mixture of isopropyl alcohol and polyethylene glycol with the following ratio of components in wt %: ultra-high molecular weight poly-α-olefin 25.0-45.0, calcium stearate 2.5-4.5, polyethylene glycol 2.5-6.0, isopropyl alcohol - the balance.
EFFECT: reducing the cost of the suspension while preserving its stability.
1 dwg, 2 tbl, 5 ex