Vinyl acetate acrylate

In these equations I is the initiator and I- is the radical intermediate, M is a vinyl monomer, I—M- is an initial monomer radical, I—M M- is a propagating polymer radical, and and are polymer end groups that result from termination by disproportionation. Common vinyl monomers that can be homo-or copolymeri2ed by radical initiation include ethylene, butadiene, styrene, vinyl chloride, vinyl acetate, acrylic and methacrylic acid esters, acrylonitrile, A/-vinylirnida2ole, A/-vinyl-2-pyrrohdinone, and others (2). 

New vinyl acetate—acrylate (VAA) emulsion copolymers stabilized with poly(vinyl alcohol) have been developed. The acryflc component of the VAAs contributes to improved compatibiUty with tackifiers (143). 

Film and foil adhesives based on internally plastici2ed copolymer adhesives have been suggested. For instance, vinyl acetate—ethylene or vinyl acetate—acrylate copolymers may be used for adhesion of films to porous surfaces. For metallic foil adhesion, copolymers containing carboxylate functionahty are suggested. 

Extension of the chlorosulfonation technology to base resins other than polyethylene, where value can be added, seems a logical next step. Polypropylene and ethylene copolymers containing additional functionaUty, ie, maleic anhydride graft, vinyl acetate, acrylic acid, etc, have been chlorinated and chlorosulfonated to broaden the appHcation base, particularly in coatings and adhesives (9,10). 

Uses. There are about forty to fifty organic peroxides commercially available in more than seventy formulations designed for specific applications which include (1) initiators for vinyl monomer polymerizations, and copolymerizations of monomers such as vinyl chloride, ethylene, styrene, vinyl acetate, acrylics, fluoroolefms and buta-dienestyrene (2) curing agents for thermoset polyesters, styrenated alkyds and oils, silicone rubbers and poly allyl diglycol carbonates ... 

This technique is extensively used for the free radical polymerisation of vinyl monomers containing water soluble initiators. The monomers like vinyl chloride, butadiene, chloroprene, vinyl acetate, acrylates and methacrylates are polymerised by this technique. 

Similar results are obtained with copolymers of vinyl acetate, acrylates, and maleates. The addition of small amounts of liquid plasticizers improves the surface gloss and smoothness of the films. The brittle point is excellent, and it is possible to get values down to — 62°C. with 40 to 45% of the plasticizer combination. 

The co-monomers such as vinyl acetate, acrylate esters, or carbon monoxide are fed together with ethylene, or introduced by liquid pumps, into the suction of the secondary compressor. The concentration in the feed of the co-monomer which is required to achieve a certain level of the co-monomer in the resulting polymer depends on the reactivity ratios, ri and r2, which are the ratios of rate constants of chain-propagation reactions [5]. The values for the co-monomers used in the high-pressure process are presented in Table 5.1-3. In the case of vinyl acetate, both reactivity ratios are identical and therefore the composition of the copolymer is the same as that of the feed. The concentration of vinyl acetate, for example, in... 

Hart and de Pauw 98) used this emulsion technique on the system vinyl acetate-acrylic acid. It is well known that the copolymerization parameters rx and r2 are unfavorable in this system therefore the relative solubility of the two monomers exerces only a small influence on the composition of both sequences. The degree of homogeneity of the sequences has been evaluated, after alkaline hydrolysis, by measuring the tendency to lactonization in acid medium. While 72% of the acetate groups could be lactonized in the case of a random copolymer containing 37% vinyl acetate, only 14% are transformed in a block copolymer with the same initial composition. 

Polychlorobutene Polymethyl-metacrylate Styrene-butadiene copolymer Vinyl acetate-acrylic copolymer... 

Nippon Paint Napp Poly(vinyl alcohol)/ Poly(vinyl acetate) Acrylic ester Solid Water... 

Off-odor forming residual raw materials can be further subdivided into residual monomers, e.g. styrene, vinyl acetate, acrylic esters, and residual solvents e.g. ethyl acetate. The presence of such residual raw materials can be deduced from knowledge of the chemical composition of the packaging, which allows them to be specifically searched for and quantitatively analyzed. 

Vinyl lacquers are used mainly where a high degree of chemical resistance is required these lacquers are based on vinyl chlorides and vinyl acetates. Acrylic lacquers are based on methyl methacrylate and methyl acrylate polymers and copolymers. Other esters of acrylic and methacrylic acid also may be used to make nonconvertible film formers. Judicious selection of these acrylic acid or methacrylic acid esters allows one to produce film formers with specifically designed properties such as hardness, flexibility, gloss, durability, heat, and chemical resistance. Acrylic lacquers, however, are not noted for their water resistance. The principal uses of acrylic-type lacquers are fluorescent and metallic paints, car refinish applications, clear lacquers and sealers for metals, and protective coatings for aircraft components and for vacuum-deposited metals, as well as uses in pigmented coatings for cabinets and appliances. 

They include vinyl acetate homopolymers and all copolymers in which vinyl acetate is the major constituent (50% or greater). The major PVAc copolymers are vinyl acetate-ethylene (VAE) and vinyl acetate-acrylic ester (vinyl acrylic). Vinyl acetate-versatic acid (vinyl versatate) and vinyl acetate- maleate are major PVAc copolymer emulsions used. 

Ethylene - vinyl acetate - acrylic acid teii)olymers have been crosslinked with 2,4 6-tri(2-methyl-l-aziridinyl)s-triazine or tris(2-methyl-l-aziridinyl) phosphite oxide. The in rovement in film tensile strength and the reduced solubility in triohlor ethylene are very marked. (49)... 

Polymer Type Vinyl Acetate-Acrylic Viscosity (cps) 700-1200 % Solids (% rain) 55 pH 4-6... 

Poly vinyl Acetate, Acrylates, Co-Polymers Sequestrants - Various types... 

SUNCRYL CP-50 is a soft self-crosslinking vinyl acetate acrylic copolymer designed specifically for textile backcoating applications. 

Suitable for a wide variety of nonwoven end-use applications. SUNCRYL CP-75 is also used as a back coating binder for stabilizing corduroy woven fabrics. SUNCRYL CP-75 is a soft, selfcrosslinking vinyl acetate-acrylic copolymer emulsion which forms a soft, flexible film. 

Vinyl acetate-acrylic copolymer SUNCRYL Sequa... 

Vinyl acetate-acrylic polymer FLEXBOND Air Products... 

Hydroxyethyl methacrylate Hydroxyethoxyethyl methacrylate Hydroxydiethoxyethyl methacrylate Methoxyethyl methacrylate Methoxyethoxyethyl methacrylate Methoxydiethoxyethyl methacrylate Ethylene glycol dimethacrylate A-Vinyl-l-pyrrohdone A-Isopropyl AAm Vinyl acetate Acrylic acid... 

Use Manufacture of vinyl chloride vinylidene chloride vinyl acetate acrylates acrylonitrile acetaldehyde per- and trichloroethylene cyclooctatetraene 1,4-butanediol carbon black and welding and cutting metals. 

Wallpol [Reichhold], TM for a series of vinyl acetate/acrylate and vinyl acetate emulsions. 

Vinyl Acetate/Acrylic Co-Polymer (Polyco 2151, (Borden)... 

Today, the latex paint industry produces primarily acrylic and vinyl-acrylic (vinyl acetate-acrylic copolymer) paints. The vinyl-acrylic latexes are used most commonly in interior flat paints, while the acrylic latexes are used most frequently with exterior paints and interior gloss or semigloss paints. In 1981, approximately 30-40 million worth of cellulose ethers was sold to the paint industry to produce over 1 billion gallons of paint in the United States (36). 

Polyco. [Rohm H ] Vinyl acetate or vinyl acetate acrylic polymers emulsion for paints, paper coadngs pigment binder for paper and pqierboard coating fibergl sizii%. 

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