Polymethyl acrylate copolymers

For example polymethyl acrylate was treated with phosphorus penta-chloride to form copolymers containing 26.6 and 37.8% acid chloride units these copolymers, by treatment with tert-butyl hydroperoxide, yield 4.9 to 6% perester containing polymers which were used for grafting styrene, vinyl acetate, acrylonitrile (177). 

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

Uses Defoamer for latex paints, latex-based stucco finishes, latex-based adhesives based on polymethyl acrylate, vinyl ester, and styrene copolymers... 

Paraloid A21LV is an acrylic copolymer, largely polymethyl methacrylate, dissolved at 30 % solids in... 

Poly (p-toluenesulfonamide-co-formaldehyde). See Tosylamide/formaldehyde resin Polytrap 6603, Polytrap Q5-6603. See Acrylates copolymer Polytrifluorochloroethylene Poly (trifluoroethylene chloride) Poly (trifluoromonochloroethylene). See Chlorotrifluoroethylene polymer Poly (trifluoropropyl (methyl) siloxane Poly (3,3,3-trifluoropropylmethylsiloxane). See Polymethyl-3,3,3-trifluoropropylsiloxane Polytrifluoropropylmethylsiloxane, silanol-terminated. See Polymethyl-3,3,3-trifluoropropylsiloxane, silanol-terminated Poly(trifluorovinyl chloride). See Chlorotrifluoroethylene polymer Polytrimethylene terephthalate Synonyms PIT... 

Diethylaminoethyl methacrylate acrylic monomer inhibitor Hydroquinone monomethyl ether acrylic plastic, food packaging Acrylamide/sodium acrylate copolymer Polymethyl methacrylate Styrene/acrylates/acrylonitrile copolymer Styrene/acrylates/ammonium methacrylate copolymer... 

Polyacrylamidomethylpropane sulfonic acid Polyacrylic acid Polybutylene terephthalate Polydimethylaminoethyl methacrylate Polyester resin, thermoplastic Polyethylacrylate Polyethylene Polyethylene terephthalate Polyglucuronic acid Polyisobutene Polymethacrylamidopropyl trimonium chloride Polymethyl acrylate Polymethyl methacrylate Polyoxyisobutylene/methylene urea copolymer Polypropylene Polypropylene, oxidized Polyquaternium-1 Polyquaternium-2 Polyquaternium-4 Polyquaternium-5 Polyquaternium-6 Polyquaternium-7... 

Polymethyl methacrylate Polyquaternium-14 Sodium ceteth-13 carboxylate Sodium cocoyl hydrolyzed rice protein Stearamide DEA Steareth-10 allyl ether/acrylates copolymer thickener, hair conditioners Cetearyl behenate thickener, hair shampoo Sodium lauryl sulfoacetate thickener, hard-surface cleaners Sodium ceteth-13 carboxylate thickener, HCI toilet bowl systems Dihydroxyethyl tallow glycinate thickener, household cleaners Cocamide DEA Soyamide DEA thickener, household prods. 

The acrylic polymer which offers the best all-round properties for a metalcoating lacquer exposed to the weather is the hardest acrylic polymer, polymethyl methacrylate (molecular weight 80000-150000). It is hard, clear, scarcely coloured, very little affected by ultraviolet light, insoluble in commercial petrols and resistant to acids and alkalis. Marked deviations from the homopolymer reduce one or more of these properties. It is true that a wide variety of acrylic copolymers are used to make excellent lacquers for many purposes, but in discussing acrylic lacquers we will now confine our attention to lacquers of polymethyl methacrylate. 

In Europe the most popular paints of this type are based on vinyl acetate copolymer or acrylic latices. The former are prepared by the emulsion polymerization of vinyl acetate, CH3C0-0 CH=CH2, and are stabilized by a combination of surfactants and protective colloids. Although polyvinyl acetate (PVA) is a relatively soft polymer, like polymethyl acrylate, its glass temperature is above room temperature. Household paints must coalesce to form a film at room temperature, so PVA must have its glass temperature... 

A subsequent study by another investigator used gradient elution to control the separation of a series of polymethyl methacrylate/butyl acrylate copolymers with varying monomer ratios. Elution times increased linearly... 

Vinyl Resins n (1934) According to common chemical nomenclature, all resins and polymers made from monomers containing the vinyl group, H2C=CHX. In the chemical literature, polystyrene, polyolefins, polymethyl methacrylate and many other styrenic, ethenic, and acrylic copolymers are classified as vinyls (Mishra, M. K. M., and Yagci, Y., Handbook of Vinyl Polymerization Marcel Dekker, New York, 1998). In the plastics literature, the above materials are given their own classifications and the term vinyl is restricted to compounds in which X, above, is not H, a hydrocarbon radical, nor an acrylic-type ester. In daily use, the term vinyl plastics refers primarily to Polyvinyl Chloride and its copolymers, and secondarily to the following Polyvinyl Acetal, Polyvinyl Acetate, Polyvinyl Butyral, Polyvinyl Dichloride, Polyvinyl Formal, Polyvinylidene Chloride, Polyisobutylvinyl Ether, and Poly(l-Vinylpyrrolidone). 

The mechanical properties of blends and graft polymers are determined primarily by the mutual solubility of the two homopolymers. For complete solubility, the properties of the mixture are close to those of a random copolymer of the same composition, as is shown in Figure 10.4, which compares a 50 50 mixture of polyvinyl acetate and polymethyl acrylate with the equivalent copolymer [15]. Note that the damping peak occurs at 30°C, compared with 15°C for the polymethyl acrylate and 45°C for polyvinyl acetate. 

Figure 10.4 Shear modulus Cj and logarithmic decrement for a miscible blend of polyvinyl acetate and polymethyl acrylate (—) and a copolymer of vinyl acetate and methyl acrylate...

Figure 4.11 expanded 400-MHz spectra are shown for four copolymers and polymethyl acrylate (PM). Expansions of the methoxy region are shown since in particular this region displays additional fine splittings due to combined configurational (= tacticity) and compositional sequence effects. The average copolymer composition (mole fraction styrene, F ) can be readily obtained by using ... 

Ester groups occur in a wide range of polymers. The classical chemical method for the determination of ester groups, namely saponification, can be applied to some types of polymer. For example, copolymers of vinyl esters and esters of vinyl esters and esters of acrylic acid can be saponified in a sealed tube with 2 M sodium hydroxide. The free acids from the vinyl esters can then he determined by GC. Polymethyl acrylate can be hydrolysed rapidly and completely under alkaline conditions however, the monomer units in polymethylmethacrylate prepared and treated similarly are resistant to hydrolysis although their benzoate end-groups react readily. Thus, saponification techniques should be applied with caution to polymeric materials. 

Polyethylene Polyacrylic acid Polymethyl acrylate Polyacrylamide Styrene-acrylonitrile copolymers Poly(a-methylstyrene) Polymethyl methacrylate Polymethacylic acid Polyvinylidene chloride PCTFE PTFE Polypropylene... 

Uses Defbamer for latex paints, latex-based stucco finishes, latex-based adhesives based on polymethyl acrylate, vinyl ester, and styrene copolymers Properties Wh. liq. si. odor hydrocarbon-like odor immisc. with water sp.gr. 0.93 g/cc dens. 7.73 Ib/gal kinematic vise. > 300.0 mm /s vapor pressure 18 mm Hg flash pt. (Seta) > 110 C 53% NV in water/oil Toxicology LD50 (oral, rat) >20000 mg/kg skin and eye irritant, high cones, may irritate respiratory tract TSCA listed... 

Block copolymers of vinyl acetate with acrylates are obtained by sequentially growing the acrylate block on (TMP)Co using AIBN as a radical source, removing the acrylate monomer and then adding vinyl acetate to grow the PVAc block. GPC traces for the polymethyl acrylate block attached with (TMP)Co ((TMP)Co-PMA) and the subsequent block copolymer with vinyl acetate ((TMP)Co-PVAc-Z)-PMA) are shown in Figure 5.18. Tailing of the... 

GPC traces showing formation of a polymethyl acrylate polyvinyl acetate block copolymer (PMA-6-PVAc) mediated by an organo-cobalt complex ((TMP)Co-P). (A) (TMP)Co-PMA block, Mn=30000, PDI (Mw/Mn) = 1.11 (B) (PMA-6-PVAc), = 85000, PDI (Mw/Mn)= 1.21. Reprinted with permission from ref. 91. Copyright 2011 American Chemical Society. 

This molecule is a copolymer with polymethyl methacrylate (PMMA) in acrylic latex paints, where the hydrophobic PMMA is surrounded by hydrophilic polyvinyl acetate molecules. Such a suspension of a hydrophobic polymer wrapped in a hydrophilic polymer is called a latex. 

Polymethyl methacrylate (PMMA) octylacrylamide/acrylates/butyl-aminoethyl methacrylate copolymer Plexiglas... 

This tertiary amine group terminated polymer can undergo transfer in the presence of a second monomer (25, 26), e.g. with acrylonitrile or methyl acrylate which show an exceptionally high transfer constant with such groups (see Table 2). By this method acrylonitrile blocks are bounded to polymethyl methacrylate sequences the overall composition of these block copolymers may be represented by... 

Chain polymerization (addition reactions) polyoxymethylene, polymethyl methacrylate (PMMA), acrylic polymers, polystyrene and styrene copolymers, water-soluble polyamide... 

Literature continues to be rather extensive on this subject since the 1930s. A summarization is provided in this section. Products fabricated include sheets, films, rods and tubes, and embedment. Acrylic castings usually consist of polymethyl methacrylate (PMMA) or copolymers of this ester as the major component with small amounts of other monomers to modify the properties (Chapter 2). Adding acrylates or higher methacrylates lowers the heat deflection temperature and hardness and improves thermoformability and solvent cementing capability, with some loss in resistance to weathering. Dimethacrylates or other crosslinking monomers increase the resistance to solvents and moisture. 

Alkyl a-acetoxyacrylate intermediates were prepared by condensing pyruvate derivatives with acetic anhydride and then free radically converting them into the corresponding homo- or copolymers. All copolymers had thermal properties that were superior to that of polymethyl methacrylate. In addition poly(ethyl a-acetoxy-acrylate) homopolymers were injection moldable at 250°C. 

Low profile plastics are added to reduce shrinkage during cure. They are normally thermoplastics that include polyvinyl acetates, polymethyl methacrylate, and copolymers with other acrylate, vinyl chloride-vinyl acetate copolymers, polyurethane, polystyrene, polycaprolactone, cellulose acetate butyrate, saturated polyester, and styrene butadiene copolymers. More details about the low profile additive (LPA) mechanism are published in the literature. ... 

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