Vinylidene chloride copolymer latices

Vinylidene Chloride Copolymer Latex. Vinyhdene chloride polymers are often made in emulsion, but usuaUy are isolated, dried, and used as conventional resins. Stable latices have been prepared and can be used direcdy for coatings (171—176). The principal apphcations for these materials are as barrier coatings on paper products and, more recently, on plastic films. The heat-seal characteristics of VDC copolymer coatings are equaUy valuable in many apphcations. They are also used as binders for paints and nonwoven fabrics (177). The use of special VDC copolymer latices for barrier laminating adhesives is growing, and the use of vinyhdene chloride copolymers in flame-resistant carpet backing is weU known (178—181). VDC latices can also be used to coat poly(ethylene terephthalate) (PET) bottles to retain carbon dioxide (182). [Pg.442]

Table 19. Film Properties of Vinylidene Chloride Copolymer Latex ...

Poly(vinylidene chloride-co-acrylonitrile) is widely used as a latex coating for cellophane, polyethylene and paper. Since this copolymer is soluble in organic solvents, it is also used as a solution coating. Tile resistance to vapor permeability and the ease of printing on polyethylene and cellophane is increased by coating with this vinylidene chloride copolymer. [Pg.1358]

Emulsion Polymerization. Emulsion polymerization is used commercially to make vinylidene chloride copolymers. In some applications, the resulting latex is used directly, usually with additional stabilizing ingredients, as a coating vehicle to apply the polymer to various substrates. In other... [Pg.438]

Incorporation of a comonomer reduces crystallinity and the crystalline melting point, permitting processing at lower temperatures or imparting solubility in organic solvents. Vinyl chloride and methyl acrylate are commonly used as comonomers for extrudable resins, typically in amounts from 6 to 28%. Vinylidene chloride copolymers with methyl acrylate and methyl methacrylate are commonly used for latex (water-based) coatings. Copolymers with acrylonitrile, methacryloni-trile, and methyl methacrylate are common for solvent-based coatings. All commercially available PVDC resins are copolymers. [Pg.121]

Vinylidene chloride latex. See Polyvinylidene chloride Vinylidene chloride copolymer... [Pg.1415]

Vinylidene chloride copolymer barrier improver, latex coatings Michem Emulsion 34935 MIchem Emulsion 62330 Michem Lube 135 Michem Lube 270R Michem Lube 368 Michem Lube 511 Michem Lube 693 Michem Lube 723 Michem Lube 743... [Pg.1458]

Vinylidene chloride copolymers (PVDC) This set of polymers includes resins for extrusion and molding, resins for solution coating, and latexes for eoating. A variety of eomonomers are used to aehieve different properties. The barrier properties are important for food paekaging. Typically, these polymers are used with other polymers sueh as polyethylene or polypropylene in multi-layer structures. [Pg.864]

An acrylate modified vinyl chloride - vinylidene chloride latex copolymer (Haloflex 202) has been developed in our laboratory (1,2) specifically for the preparation of water-borne anti-corrosive primer paints. This carefully designed copolymer, hereafter... [Pg.18]

Copolymerization. Vinyl chloride can be copolymerized with a variety of monomers. Vinyl acetate, the most important commercial comonomer, is used to reduce crystallinity, winch aids fusion and allows lower processing temperatures. Copolymers are used in flooring and coatings. This copolymer sometimes contains maleic add or vinyl alcohol (hydrolyzed from the poly(vinyl acetate ) to improve the coating s adhesion to other materials, including metals, Copolymers with vinylidene chloride are used as barrier films and coatings. Copolymers of vinyl chlonde with acrylic esters in latex from are used as film formers in paint, nonwoven fabric binders, adhesives, and coatings. Copolymers with olefins improve thermal stability and melt flow, but at some loss of heat-deflection temperature,... [Pg.1687]

VdC/EA/MMA teipolymer (latex) Vinyl chloride/vinyl acetate copolymer Vinylidene chloride Vinylidene chloride/vinyl chloride copolymer Formaldehyde Vinyl chloride Epichlorbhydrin Polyvinyl chloride (latex) Polyvinyl chloride (general) Thermoplastic polyurethane Polycarbonate (flame resistant) Polyurethane flexible foam Polycarbonate (general) Polyurethane rigid foam Acrolein MDI Phosgene TDI... [Pg.267]

Looking at the historical development of the emulsion pol)nnerization, it is seen that the trigger factor in this development was the necessity for synthetic rubber in the wartime. The production of styrene/butadiene rubber (SBR) satisfied this requirement. Today, millions of tons of S)mthetic latexes are produced by the emulsion pol3merization process for use in wide variety of applications. In the S)mthetic latexes, the most important groups are styrene/butadiene copolymers, vinyl acetate homopol)rmers and copol)nners, and polyacrylates. Other synthetic latexes contain copolymers of ethylene, styrene, vinyl esters, vinyl chloride, vinylidene chloride, acrylonitrile, cloroprene and polyurethane. [Pg.37]

Journal of Polymer Science Polymer Physics Edition 40, No. 10, 15th May 2002, p.939-47 FILM FORMATION PROPERTY OF VINYLIDENE CHLORIDE-METHYL METHACRYLATE COPOLYMER LATEX. I. EFFECT OF EMULSION-POLYMERIZATION PROCESS... [Pg.39]

Vinylidene chloride monomer is produced commercially in the United States by The Dow Chemical Co. and PPG Industries. The monomer is produced in Europe by Imperial Chemical Industries, Ltd. and Solvin. The monomer is produced in Japan by the Asahi Chemical Co., Kureha Chemical Industries, and Kanto Denka Kogyo Co. Commercial suppliers of VDC copolymers include The Dow Chemical Co. in the United States and Solvin in Europe. Asahi Chemical Co. and Kureha Chemical Industries are suppliers of VDC resins in Japan. Additional manufacturers of exclusively VDC latexes include W. R. Grace and Rohm Haas in the United States, and Scott-Bader in Europe. Local suppliers of VDC resins have also been reported in Russia and the People s Republic of China. [Pg.9021]

Poly(vinylidene chloride) latices can be easily prepared by the same methods but have few uses because they do not form films. Copolymers of high VDC content are film-forming when freshly prepared but soon crystallize and lose this desirable characteristic. Because crystallinity in the final product is very often desirable, eg, in barrier coatings, a significant developmental problem has been to prevent crystallization in the latex during storage and to induce rapid... [Pg.9030]

The monomers which have been investigated include methyl methacrylate, ethyl acrylate ester, hydroxy acrylates and methacrylates, acrylonitrile, vinyl acetate, vinyl chloride, acrylamide, vinylidene chloride, acrylic acid, vinyl pyrollidone and styrenec Many copolymer latexes of these monomers have also been preparedc Undoubtedly the most amenable system for model studies is methyl methacrylate in aliphatic hydrocarbono... [Pg.45]

Przyluski et al. [347] recently described a stepwise chemical polymerization of aniline and pyrrole in the presence of aqueous vinylidene chloride-Me acrylate-Bu acrylate copolymer solutions to yield conductive "latexes . Contents were from 5%... [Pg.259]

Uses DispersanL emulsifier, solubilizer for emulsion polymerization of acrylates, styrene acrylic, vinyl chloride, vinylidene chloride and vinyl acetate copolymers foaming agent for mech. latex foaming, caqiet and upholstery cleaners air entraining agent emulsifier in mfg. of food-contact articles food-contact paper/ paperboard... [Pg.349]