Abstract:
Production of an improved chlorinated polymer by the low temperature bulk copolymerization of vinyl chloride and 1,2-trans dichloroethylene where the polymerization is carried out to at least a 30 percent conversion of monomers at a temperature of -5 to -30* C. and under substantially shearing action.
Abstract:
A composition comprises (i) from 0.5 to 25 parts by weight of an after-chlorinated polyethylene having a relative viscosity of of 1.5 to 18 and a chlorine content of from 20 to 60% by weight, and (ii) from 99.5 to 75 parts by weight of an after-chlorinated stereoregular polyvinylchloride having a relative viscosity of 1.5 to 6.5 and a chlorine content of from 58 to 71% by weight, the chlorine atoms of the after-chlorinated polyvinyl chloride originally being 55 to 85% syndiotactically arranged. Other components of the composition may be: polyvinyl acetate, polyethylene, polyacrylonitrile, lubricants, e.g. low molecular weight polyethylene or barium cadmium stearate, stabilizers, pigments, dyestuffs, fillers, and light-protection agents, e.g. phosphorous acid esters. The chlorination of polyvinyl chloride in suspension, using a swelling agent, excess chlorine, and ultra-violet light, is described in the examples. In comparative Examples 5-8, an after-chlorinated atactic polyvinyl chloride is used in place of the stereoregular polymer. The compositions may be formed into shaped elements or coatings.
Abstract:
Improved process for metallizing various plastic materials, including shaped vinyl chloride polymer and acrylonitrilebutadiene-styrene polymer articles, which includes using as the sensitizing solution in the known metallization process a solution which contains at least one tin IV salt dissolved therein in addition to the tin II and other conventional components. The sensitizing solution is itself disclosed and claimed.
Abstract:
A SHAPED ARTICLE OF A VINYLCHLORIDE GRAFTED COPOLYMER OF ETHYLENE AND VINYLCHLORIDE HAVING ON THE SURFACE THEREOF A METAL FILM AND PROCESS FOR PRODUCING SUCH METALLIZED SHAPED ARTICLE COMPRISING (1) PREPARING AN ETHYLENE-VINYLCHLORIDE COPOLYMER, (2) GRAFTING VINYLCHLORIDE ONTO SAID COPOLYMER, (3) FORMING SAID GRAFT COPOLYMER INTO A SHAPED ARTICLE AND (4) APPLYING A METAL FILM TO THE SURFACE OF SAID ARTICLE.
Abstract:
Polyvinylchloride or chlorinated polyvinylchloride polymer article reinforced with glass fibers coated with vinyl chloridevinyl trialkoxysilane copolymers in an amount effective to increase the strength characteristics of the article. The copolymer can include at least one of carboxylic acid vinyl esters, unsaturated mono- or dicarboxylic acid esters, and alkyl vinyl ethers.
Abstract:
HOMO AND COPOLYMERIZATION OF VINYL CHLORIDE WITH OR WITHOUT COMONOMERS AT ABOUT -8 TO -50*C. IN THE PRESENCE OF ASCORBIC ACID, HEAVY METAL SALTS AND A COMBINATION OF HYDROGEN PEROXIDE AND CYCLOHEXANESULFONYLACETYL PEROXIDE AS A REDOX SYSTEM POLYMERIZATION CATALYST.
Abstract:
AN ELECTROPLATED PRODUCT CONPRISING A GRAFT COPOLYMER OF VINYL CHLORIDE ON A CONJUGATED DIENE BACKBONE. THE COPOLYMER IS FIRST SENSITIZED WITH STANNOUS CHLORIDE, THEN CHEMICALLY PLATED WITH METAL AND THEN ELECTROPLATED.