Vinyl acetate-methyl acrylate copolymers

The H-NMR spectrum of the vinyl acetate - methyl acrylate copolymer (vinyl acetate content = 44 mol % in the copolymer) with the signal assignments is shown in Figure 4.13. The copolymer composition was calculated using the expression ... [Pg.262]

Cellulose/vinyl acetate/methyl acrylate copolymers A DSC, DMA [89]... [Pg.85]

The C-NMR DEPT spectrum of a vinyl acetate-methyl acrylate copolymer containing 44% vinyl acetate in CDCI3 is shown in Figure 7.21. It is seen that the signals due to methine and methylene carbons of methyl acrylate and vinyl acetate monomeric units are differentiated. [Pg.231]

Tetrachloroethylene reacts with formaldehyde and concentrated sulfuric acid at 80°C to form 2,2-dichloropropanoic acid [75-99-0] (8). Copolymers with styrene, vinyl acetate, methyl acrylate, and acrylonitrile are formed in the presence of dibenzoyl peroxide (9,10). [Pg.28]

Because the polymer degrades before melting, polyacrylonitrile is commonly formed into fibers via a wet spinning process. The precursor is actually a copolymer of acrylonitrile and other monomer(s) which are added to control the oxidation rate and lower the glass transition temperature of the material. Common copolymers include vinyl acetate, methyl acrylate, methyl methacrylate, acrylic acid, itaconic acid, and methacrylic acid [1,2]. [Pg.120]

Acrylates copolymer Epoxy, bisphenol A 2-Hydroxyethyl acrylate Hydroxypropyl acrylate Meroxapol 105 Meroxapol 108 Meroxapol 171 Meroxapol 172 Meroxapol 174 Meroxapol 178 Meroxapol 251 Meroxapol 252 Meroxapol 254 Meroxapol 255 Meroxapol 258 Meroxapol 311 Meroxapol 312 Meroxapol 314 Methacryllc acid Methyl hydroxyethylcellulose PEG-14M PEG-2 stearate PEG-2 tallowate Polyethylene , Styrene/acrylates copolymer binder, textiles adhesives Hydroxypropyl methacrylate binder, textured coatings Vinyl acetate/butyl acrylate copolymer binder, textured finishes Vinyl acetate/ethylene/vinyl chloride terpolymer... [Pg.4904]

Tallow Tallow alcohol Tosylamide/formaldehyde resin VA/crotonates copolymer Vinyl acetate/butyl acrylate copolymer Vinyl acetate/crotonic acid copolymer Vinylidene chloride/acrylonitrile copolymer Vinylidene chloride/methyl acrylate copolymer Vinylidene chloride/vinyl chloride copolymer Zinc laurate paper/paperboard, dry food-contact Acrylamides copolymer Acrylates copolymer Alkenyl succinic anhydride Ammonium maleic anhydride/diisobutylene copolymer Ammonium nitrate... [Pg.5505]

Commercial PAN is actually a copolymer of acrylonitrile and another monomer (vinyl acetate, methyl acrylate, or acrylic acid) that is added to lower the glass-transition temperature of the material and control its oxidation resistance (see Acrylonitrile and Acrylonitrile Polymers). The repeat imit of PAN is shown in Figure 5. The copolymer is formed through a wet-spinning process in which the polymer solution is extruded directly into a liquid bath. A blend of... [Pg.1005]

Both acrylic and modacrylic fibres are based on atactic polyacrylonitrile. The generic name acrylic fibre refers to fibres made from linear copolymers that consist of not less than 85 wt % acrylonitrile units. The majority of commercial acrylic fibres contain between 5 and 8% of neutral comonomers, namely vinyl acetate, methyl acrylate or methyl methacrylate. In addition, smaller quantities of various ionic comonomers e,g, sodium styrenesulfonate) are used to provide, together with the ionic end-groups formed from sulfonate and sulfate initiators, the dye sites in the fibres. [Pg.491]

An a priori method for choosing a surfactant was attempted by several researchers (50) using the hydroph i1 e—1 ip oph i1 e balance or HLB system (51). In the HLB system a surfactant soluble in oil has a value of 1 and a surfactant soluble in water has a value of 20. Optimum HLB values have been reported for latices made from styrene, vinyl acetate, methyl methacrylate, ethyl acrylate, acrylonitrile, and their copolymers and range from 11 to 18. The HLB system has been criticized as being imprecise (52). [Pg.25]

Bauer et al. describe the use of a noncontact probe coupled by fiber optics to an FT-Raman system to measure the percentage of dry extractibles and styrene monomer in a styrene/butadiene latex emulsion polymerization reaction using PLS models [201]. Elizalde et al. have examined the use of Raman spectroscopy to monitor the emulsion polymerization of n-butyl acrylate with methyl methacrylate under starved, or low monomer [202], and with high soUds-content [203] conditions. In both cases, models could be built to predict multiple properties, including solids content, residual monomer, and cumulative copolymer composition. Another study compared reaction calorimetry and Raman spectroscopy for monitoring n-butyl acrylate/methyl methacrylate and for vinyl acetate/butyl acrylate, under conditions of normal and instantaneous conversion [204], Both techniques performed well for normal conversion conditions and for overall conversion estimate, but Raman spectroscopy was better at estimating free monomer concentration and instantaneous conversion rate. However, the authors also point out that in certain situations, alternative techniques such as calorimetry can be cheaper, faster, and often easier to maintain accurate models for than Raman spectroscopy, hi a subsequent article, Elizalde et al. found that updating calibration models after... [Pg.223]

ABA ABS ABS-PC ABS-PVC ACM ACS AES AMMA AN APET APP ASA BR BS CA CAB CAP CN CP CPE CPET CPP CPVC CR CTA DAM DAP DMT ECTFE EEA EMA EMAA EMAC EMPP EnBA EP EPM ESI EVA(C) EVOH FEP HDI HDPE HIPS HMDI IPI LDPE LLDPE MBS Acrylonitrile-butadiene-acrylate Acrylonitrile-butadiene-styrene copolymer Acrylonitrile-butadiene-styrene-polycarbonate alloy Acrylonitrile-butadiene-styrene-poly(vinyl chloride) alloy Acrylic acid ester rubber Acrylonitrile-chlorinated pe-styrene Acrylonitrile-ethylene-propylene-styrene Acrylonitrile-methyl methacrylate Acrylonitrile Amorphous polyethylene terephthalate Atactic polypropylene Acrylic-styrene-acrylonitrile Butadiene rubber Butadiene styrene rubber Cellulose acetate Cellulose acetate-butyrate Cellulose acetate-propionate Cellulose nitrate Cellulose propionate Chlorinated polyethylene Crystalline polyethylene terephthalate Cast polypropylene Chlorinated polyvinyl chloride Chloroprene rubber Cellulose triacetate Diallyl maleate Diallyl phthalate Terephthalic acid, dimethyl ester Ethylene-chlorotrifluoroethylene copolymer Ethylene-ethyl acrylate Ethylene-methyl acrylate Ethylene methacrylic acid Ethylene-methyl acrylate copolymer Elastomer modified polypropylene Ethylene normal butyl acrylate Epoxy resin, also ethylene-propylene Ethylene-propylene rubber Ethylene-styrene copolymers Polyethylene-vinyl acetate Polyethylene-vinyl alcohol copolymers Fluorinated ethylene-propylene copolymers Hexamethylene diisocyanate High-density polyethylene High-impact polystyrene Diisocyanato dicyclohexylmethane Isophorone diisocyanate Low-density polyethylene Linear low-density polyethylene Methacrylate-butadiene-styrene... [Pg.958]

Fig. 22a-h. Glass transition temperature versus composition of copolymers methyl methacrylate + styrene (a) styrene + methyl acrylate (b) acrylonitrile + styrene (c) vinyl chloride + methyl acrylate (d) methyl methacrylate + vinyl chloride (e) acrylonitrile + butadiene (f) acrylonitrile + vinyl acetate (g) a-methyl styrene + acrylonitrile (h). Experimental points obtained at low conversions from various publications, are compared to the theoretical plots calculated according to Eqs. (7.1) within the framework of the terminal model [18]... [Pg.77]

None of the factors that affect particle morphology operate alone. In particular, the mode of monomer addition is an interacting factor. This is illustrated by procedures used to produce core-and-shcll polymers for use in architectural paints [26]. Polymers used for this purpose are primarily copolymers of butyl acrylate with either vinyl acetate or methyl methacrylate. The goal here was to make particles with conventional film-forming polymer shells and cores comprised of less expensive monomers than were used in the shells. In practice, this could mean poly(vinyl acetate) cores inside vinyl acetate/butyl acrylate shells or the same or poly(methyl... [Pg.294]

Nonionic, anionic, and cationic VP copolymers are all available commercially to enhance the hydrophilic, hydrophobic, and ionic properties of PVP for specihc applications. Important comonomers include vinyl acetate (VA), acrylic acid (AA), vinyl alcohol, dimethy-laminoethylmethacrylate (DMAEMA), styrene, maleic anhydride, acrylamide, methyl methacrylate, lauryl methacrylate (LM), a-olelins, methacrylamido-propyltrimethyl ammonium chloride (MAPTAC), vinyl caprolactam (VCL), and dimethylaminopropyl-methacrylamide (DMAPMA). [Pg.1711]

Polyethylene (PE) is a family of addition polymers based on ethylene. Polyethylene can be linear or branched, homopolymer, or copolymer. In the case of a copolymer, the other comonomer can be an alkene such as propene, butene, hexene, or octene or a compound having a polar functional group such as vinyl acetate (VA), acrylic acid (AA), ethyl acrylate (EA), or methyl acrylate (MA). If the molar percent of the comonomer is less than 10%, the polymer can be classified as either a copolymer or homopolymer. Figure 4.1 presents a diagram of the family of polymers based on ethylene monomer. [Pg.101]

VA/crotonates/vinyl neodecanoate copolymer VA/crotonates/vinyl propionate copolymer VA/isobutyl maleate/vinyl neodecanoate copolymer Vinyl acetate Vinyl caprolactam/PVP/dimethylaminoethyl methacrylate copolymer film-former, cosmetics moisturizers Diglycol/CHDM/isophthalates/SIP copolymer film-former, cream rinses Polyquatemium-2 film-former, creams Acetylated lanolin Nitrocellulose film-former, creams/lotions Arachidyl behenate PVM/MA copolymer, isopropyl ester film-former, detergents PVM/MA copolymer film-former, dish detergents Hydrolyzed collagen film-former, disposable gloves Ethylene/methyl acrylate copolymer film-former, dusting powders Rice (Oryza sativa) starch film-former, dyes PVP/VA copolymer film-former, elastomers Dibutyl phthalate... [Pg.5251]

Cellulose acetate phthalate film-former, enteric pharmaceuticals Hydroxypropyl methylcellulose phthalate film-former, explosives Dibutyl phthalate film-former, fixing lotions PVP/VA/vinyl propionate copolymer VA/crotonates/vinyl propionate copolymer film-former, flexible hoses Ethylene/methyl acrylate copolymer film-former, floor finishes Ethylene/acrylic acid/vinyl acetate copolymer film-former, flooring compounds Acrylamides copolymer film-former, food... [Pg.5251]

There are two general types of water-based adhesives solutions and latexes.Solutions are made from materials that are soluble only in water or in alkaline water. Examples of materials that are soluble only in water include animal glue, starch, dextrin, blood albumen, methyl cellulose, and polyvinyl alcohol. Examples of materials that are soluble in alkaline water include casein, rosin, shellac, copolymers of vinyl acetate or acrylates containing carboxyl groups, and carboxymethyl cellulose. [Pg.128]

Copolymer from methyl methacrylate and butyl acrylate Copolymer from methyl methacrylate, butyl acrylate, diallyl maleate, and trimethylol propane triacrylate Methyl methacrylate-ethyl acrylate copolymer Methyl methacrylate-methyl acrylate copolymer Methyl methacrylate-co-A -phenylmaleimide copolymer Copolymer from methyl methacrylate and a-methyl styrene Methyl methacrylate-vinyl acetate copolymer Copolymer of methyl methacrylate, vinyl acetate, and acrylic acid... [Pg.2162]

See also ethylene acrylic acid copolymer ethylene ethyl acrylate copolymer ethylene methyl acrylate copolymer ethylene n-butyl acrylate copolymer ethylene vinyl acetate copolymer ethylene vinyl alcohol. [Pg.431]

The batch emulsion copolymerisation of vinyl acetate and acrylic acid, methyl acrylate and acrylamide was investigated at 25C with a redox initiator system and a complex emulsifier. The kinetic behaviour of the copolymerisation and the structure of the resulting copolymers, as well as the particle size and number density of the latexes, were studied as a function of the conversion and the reaction time. 10 refs. [Pg.124]

The first useful acrylic PSAs were introduced in the 1950s with the incorporation of high Tg functional monomers (23), such as acrylic acid and acrylamide, used for reinforcement. This continues to be a widely used approach for acrylic PSA reinforcement. Typical acrylic PSAs contain up to 10% of these reinforcing monomers. Additional high Tg, but nonfunctional, monomers may also be added to the copolymer, with some typical examples being vinyl acetate, ethyl acrylate, methyl acrylate, and methyl methacrylate. [Pg.6717]

Important copolymers of styrene are SBR (styrene butadiene rubbers), ABS, a copolymer with butadiene and acrylonitrile, and various copolymers with methacylic and acrylic esters, such as styrene-methyl methacrylate and styrene-methyl acrylate copolymers. Additionally, copolymers formed with one or more of the following monomers also exist ethylene, a-methyl styrene, vinyl acetate, maleic anhydride, and acrylonitrile. [Pg.257]

While most copolymers of vinyl acetate are random copolymers, alternating copolymers are formed when the reactivity ratios for the two monomers are suitable. This occurs spontaneously when vinyl acetate is polymerized with electron-poor monomers such as maleic anhydride [273]. Alternatively, it has been reported that acrylonitrile which has been precomplexed with zinc chloride gives alternating polymers with vinyl acetate [274]. Block polymers of vinyl acetate with methyl methacrylate, acrylonitrile, acrylic acid, and n-vinyl pyrrolidone have been prepared by the strategy of preparing poly(vinyl acetate) macroradicals in poor solvents in which the macroradicals are occluded. Addition of a second monomer swells the polymer coils, and polymerization continues with the addition of the new monomer [275]. [Pg.190]