Polyethyleneglycol methacrylate

Fig. 55. Dependence of square root of excess LS for solutions of (a) polyethyleneglycol methacrylate and (b) polymethyl methacrylate in mixed solvents comprising 2,2,3,3-tetrafIuoropro-panol (volume fraction ) and benzyl alcohol. (T = 25 °C, 0 = 546 nm). Broken lines indicate composition of mixed solvent yielding no excess scattering from the polymer in each case1 S2 ...

Synonyms Methoxy polyethyleneglycol methacrylate Uses Monomer for prep, of waterborne and water-thinnable polymers, conoskm/scale inhibitors, textile treatments, adhesive applies. steric stabilizer and controlled release device for phannaceuticals Trade Names CD 550 CD 552... 

Methoxy polyethylene glycol. See Methoxy PEG Methoxy polyethyleneglycol methacrylate. See Methoxy PEG methacrylate a,u)-Methoxypoly (ethylene oxide). See PEG dimethyl ether... 

For (b), a block copolymer, in which one side of the block has affinity to the solvent and the other block to the polymer particle, is the most reasonable stabilizer. Block copolymers of polystyrene/halogenated polybutadiene, polystyrene/ polyethyleneglycol, and polystyrene/PDMS are examples of this type of stabilizer (12). When using a block copolymer, it is possible to provide appropriate amphiphilic and other surface properties by changing the block ratio. For example, when using a block copolymer of polystyrene/PDMS for polymerization of methyl methacrylate in hexane, the ratio of polystyrene/polydimehtylsiloxane should be below 4.4 (13). If the ratio is above 4.4, the block copolymer forms a stable micelle and will not function properly as a stabilizer. 

Malofsky and Baccei, from the Loctite Corporation, report on the significant mechanical property improvements obtained with maleimide and nadic capped monomers and prepolymers as additives in anaerobic methacrylate/ acrylate adhesive systems. Significant improvement in thermal resistance was noted in a PEGMA (polyethyleneglycol diroethacrylate) system in which a polymerizable maleimide addition was incorporated. A "neat" polymerized urethane methacrylate failed catastrophically within 1000 hrs. at... 

The base methacrylate monomers utilized were a polyethyleneglycol dimethacrylate (PEGMA - produced by Loctite), an ethoxylated bisphenol—A dimethacrylate (EBIPMA - produced by AKZO), a urethane methacrylated capped poly(butadiene acrylonitrile) polyol, and hydroxy-propyl methacrylate (HPMA - Rohm and Haas). The following maleimide capped monomer/prepolymers were examined N-phenyl maleimide (NPM), meta-phenylene dimaleimide (m-PDM), and a reaction product of methylenedi-aniline and excess methylenedianiline bismaleimide (P-MDA-2MDABM), sold by Rhodia Corp. under the tradename of Keramide... 

PEO Polyethylene oxide (or polyethyleneglycol, PEG) PEMA Poly(ethyl methacrylate)... 

Synonyms oxybis(2,i-ethanediyloxy-2,i-ethanediyl)ester 2-methyl-2-propenoic acid oxybis(2,i-ethanediyloxy-2,i-ethanediyl) ester Uses methacrylate present in adhesives in polyethyleneglycol dimethacrylate in Loctite anaerobic sealants A... 

Also in the field of hydrogels, (meth)acrylates play an important role. Since there is quite a number of hydrophilic methacrylate-based monomers available, radical copolymerization with an appropriate crosslinking monomer leads to network formation. The most widely used monomers are 2-hydroxyethyl methacrylate HEMA, 2-aminoethyl methacrylate and the alkyl derivatives, amethacrylamid and the alkyl derivatives, ethyleneglycol dimethacrylate EGDMA, and polyethyleneglycol dimethacrylate PEGDMA. 

The main classes of polymers suitable for HME, listed in Table 5.1, include polyvinyl-based polymers (homo- and co-polymers), polyethyleneglycoles (PEG) and poly-ethylenoxides (PEO), poloxamers, methacrylate copolymers and cellulose derivatives. The main advantage of the polyvinyl polymers and related copolymers is their high solubilizing ability, which can be attributed to the presence of lipophiUc groups in the... 

PHB and block copolymer having poly(methacrylic acid) backbone with hydroxybutyric and hydrovaleric acid groups High molecular weight polyethyleneglycol, [60] PEG... 

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