Acrylic polymers polyacrylates

Synthetic polymers polyolefines (polystyrene, polystyrenedivinylben-zene), acrylic polymers (polyacrylate, polyacrylamide, polymethacrylate, etc.) and others such as polyvinyl alcohols, polyvinyl chloride, polyte-trafluoroethylene, polyamides, polyurethane, silicone, etc. 

Polyacrylates. See Vol 1, A96-R to A97-R and the following limited and unlimited distribution Addni Refs 1) E.T. Niles, et al, LMH-1/ Hydrazine Heterogeneous Propellant Development , AFRPL-TR-68-216, Contract AF-Q4-(611)-11606, Dow Chem, Midland (1968) (limited) 2) J. Simicek, et al, Explosive Acrylic Polymers , Rept No FSTC-HT-23-1046-73, AFS TC, Charlottesville (1973)... 

Sodium polyacrylate also named acrylic sodium salt polymer or simply ASAP (repeating unit -CH2-CH(COONa)-) is a polymer widely used in consumer products. Acrylate polymers generally are considered to possess an anionic charge. While sodium neutralized acrylates are the most common form used in industry, there are also other salts available including potassium, lithium, and ammonium. 

The term polyacrylates includes synthetic, high molecular weight polymers of acrylic acid (polyacrylic acid or PAA) that are also known as carbomers. They are either linear or (weakly) cross-linked (either by allyl sucrose (carbomers) or by divinyl glycol (polycarbophils)) polymers that are broadly applied in... 

Poly(acrylates) and poly(methacrylates) form another class of common polymers with saturated carbon chain backbone. Polyacrylates can be considered vinyl polymers with the -COOR group attached at every other carbon atom in the chain. However, due to their common use and particular properties, polyacrylates form a separate polymer class together with polymethacrylates. Among the most common polymers from this class are those obtained from acrylic acid methyl ester (PMA) and methylacrylic (methacrylic) acid methyl ester (PMMA). Acrylic polymers have many practical applications in automotive industry, in the production of medical materials, paints, coatings and lacquers, adhesives, textiles, and synthetic leather. Poly(methacrylic acid methyl ester) can be obtained in cast sheets with applications in technical components, furniture, building materials, etc. Formulas for poly(acrylic acid), two polyacrylates, and poly(methyl methacrylate) are shown below ... 

Use Monomer for polyacrylic and polymethacrylic acids and other acrylic polymers. 

Acrylic polymers used in coatings are composed primarily of polymethacrylates and polyacrylates ... 

Several polymers were evaluated in the form of a surface coating on glass beads packed in columns to determine their ability to retain platelets when whole human blood passes over the surface. This ability was measured as the platelet retention index p, the fraction of platelets retained on the column. Lowest values of p were found for poly(ethylene oxide), polypropylene oxide), poly(tetramethylene oxide) (in the form of polyurethanes), and polydimethylsiloxane. Highest values (around 0.8) were found for cross-linked poly(vinyl alcohol) and the copolymers of ethylenediamine with diisocyanates. Intermediate values were found for polystyrene and its copolymers with methyl acrylate, for polyacrylate, and for poly(methyl methacrylate). The results are interpreted in terms of possible hydrophobic and hydrogen bonding interactions with plasma proteins. 

They are a group of polymers also commonly known as acrylics or polyacrylates. They have high transparencies and resistance to breakage, when compared to conventional (window) glass. 

Acrylic polymer Acrylic polymer resins. See Polyacrylic acid... 

Synonyms Acrylic acid homopolymer Acrylic acid polymer Acrylic acid, polymers Acrylic acid resin Acrylic polymer Acrylic polymer resins Acrylic resin Atactic poly(acrylic acid) PAA Polyacrylate Poly (acrylic acid) 2-Propenoic acid, homopolymer Propenoic acid polymer Propenoic acid, polymers, homopolymer IMinition Polymer of acrylic acid En rirical (CjHjOj),... 

Uses Carboxylated comonomer for polyacrylic and polymethacrylic acids, other acrylic acids, acrylic polymers, styrene-butadiene, vinyl acetate, nitrile latex comonomer for radiation-cured polyester/polyurethane resin paints antimigrant for pigment pad dyeing pigment print emulsifier... 

Sodium polyacrylate Sodium xylenesulfonate Styrene/allyl alcohol copolymer Toluene VA/crotonates/vinyl propionate copolymer Xylene Zinc stearate paper/paperboard, food packaging Methyl acrylate polymer Styrene/butadiene polymer... 

By contrast with PMMA, poly(methyl acrylate), PMA, and several other aliphatic polyacrylates were found by Shultz and Bovey (240) to imdergo cross-linking and gel formation on irradiation with 1-MeV electron beams. They reported G(S) = 0.15 and G(X) = 0.52 for PMA. Graham (241,242) reported that the phenyl, benzyl, and 2-phenyl ethyl acrylate polymers also undergo cross-linking on y radiolysis imder vacuum. There was evidence of side-chain scission also, and according to Fox and co-workers (243,244) the major volatile products were similar to those observed for PMMA. 

Initial researches into acrylic polymers were concerned rather more with polyacrylates than polymethacrylates. The first acrylic polymer to be produced commercially was poly(methyl acrylate) production was begun in 1927 by Rohm and Haas AG in Germany. In about 1930, Hill of Imperial Chemical Industries Ltd. (U.K.) prepared cast poly(methyl methacrylate) and found it to be a potentially useful material but high raw material costs prohibited commercial development. (At this time, methyl methacrylate was obtained by dehydration of the hydroxyisobutyric ester.) In 1932 Crawford (also of Imperial... 

Polyacrylate leveling additives are homopolymers or copolymers of acrylates with alkyl, polyester or polyether modifications. They are normally supplied as solvent-free materials or as solutions. The performance of these additives is tailored through variations in their chemical composition (polarity and type of monomers) and MW, because their solubility and compatibility in coatings are dependent on these factors. Linear acrylic polymers are more incompatible than branched ones and those with higher MW are more incom-... 

Figure 3.2 Infrared spectra of chemically treated polymers (a) spectrum of sodium polyacrylate before and after exposure to hydrogen chloride vapour and the heated film of the hydrogen chloride treated acrylate, sodium polyacrylate film, sodium polyacrylate film exposed to HCl vapour, sodium polyacrylate film exposed to HCl vapour and then heated (b) spectra of copolymer of acrylic acid and vinylidene chloride and the film after exposure to ammonia vapour, acrylic acid-vinylidene chloride copolymer film, acrylic acid-vinylidene chloride copolymer film exposed to ammonia vapour. Source Author s own files)...

Polyacrylates can be easily polymerized by bulk polymerization in mild conditions. The acrylate and methacylates esters form glassy materials with a broad range of molecular weight (from 200,000 to 700,000 g mol ), depending on processing conditions this group of polymers is widely used for intraocular lenses, bone cement, dentures and middle ear prostheses. Acrylate polymers are widely... 

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