Methacrylic acid methyl methacrylate

Selected physical properties of various methacrylate esters, amides, and derivatives are given in Tables 1—4. Tables 3 and 4 describe more commercially available methacrylic acid derivatives. A2eotrope data for MMA are shown in Table 5 (8). The solubiUty of MMA in water at 25°C is 1.5%. Water solubiUty of longer alkyl methacrylates ranges from slight to insoluble. Some functionalized esters such as 2-dimethylaniinoethyl methacrylate are miscible and/or hydrolyze. The solubiUty of 2-hydroxypropyl methacrylate in water at 25°C is 13%. Vapor—Hquid equiUbrium (VLE) data have been pubHshed on methanol, methyl methacrylate, and methacrylic acid pairs (9), as have solubiUty data for this ternary system (10). VLE data are also available for methyl methacrylate, methacrylic acid, methyl a-hydroxyisobutyrate, methanol, and water, which are the critical components obtained in the commercially important acetone cyanohydrin route to methyl methacrylate (11). 

Isotactic poly(methyl methacrylate/methacrylic acid), a copolymer of methyl methacrylate and methacrylic acid, was synthesized by the partial hydrolysis of isotactic poly(MMA) according to the method of Klesper et al. (10-13). A hydrolyzing mixture of 8 mL dioxane and 4 mL methanolic KOH (10% by weight K0H) was mixed with 250 mg of polymer in closed vials at 85°C for 48 hr. Saponified polymer separated from the solution and adhered to the walls of the vial. The precipitated polymer was dissolved in water and then precipitated again with a few drops of HC1. The solution was warmed and the coagulated polymer removed, washed with water, and dried in vacuo at 50°C. The nmr spectrum indicated approxi-... 

Atactic poly(methyl methacrylate/methacrylic acid), the copolymer of methyl methacrylate (MMA) and methacrylic acid (MAA), was synthesized "directly" as a prepolymer to be esterified with bis(tri-n-butyltin) oxide (TBTO). Two formulations of poly (MMA/MAA) were synthesized, a 1 1 and a 2 1 MMA and MAA copolymer whose syntheses differ only in the proportion of monomer reacted. 

Fractionation of Copoly(Methyl Methacrylate-Methacrylic Acid) Obtained by Hydrolysis of Copoly(Methyl Methacrylate- Trityl Methacrylate)... 

An alternative system was recently described by Chandross et al. (35,36) based on optically transparent aqueous-alkali-soluble methyl methacrylate-methacrylic acid copolymer as the inert resin. The dissolution inhibitor was an o-nitrobenzyl carboxylate which undergoes photochemical decomposition to o-nitrosobenzaldehyde plus a carboxylic acid as follows ... 

Inui K, Noguchi K, Miyata T, and Uragami T. Pervaporation characteristics of methyl methacrylate-methacrylic acid copolymer membranes ionically crosslinked with metal ions for a benzene/cyclohexane mixture. J Appl Polym Sci 1999 71 233-241. 

Butyl acrylate/methyl methacrylate/methacrylic acid copolymers with silylated latexes were prepared essentially according to a general procedure suitable to real-world systems. 

Poly(methyl acrylate, methyl methacrylate, methacrylic acid) 7 3 1 Eudragit FS 30D Rohm GmbH [26936 24-3]... 

Copolymer compositions were determined by a high resolution nuclear magnetic resonance spectrometer (180 HMz). Copolymers of methyl methacrylate and styrene were dissolved in deuterated chloroform for the analysis. Deuterated pyridine was the solvent for the methyl methacrylate - methacrylic acid copolymers. Elemental analysis was also used in copolymer composition analysis to complement the NMR data. 

The reaction was also tested over a V-P oxide catalyst with a P/V atomic ratio of 1.06 consisting of (VO)2P207 at a temperature of 320 °C and a methyl propionate/HCHO molar ratio of 2.0, using methylal as the source of HCHO. The yields of methyl methacrylate, acrylic acid, propionic acid reach 25, 6, and 20 mol%, respectively, based on the charged HCHO the sum of the yields of methyl methacrylate and methacrylic acid reaches 31 mol%. By the combination of Si with the V phosphate, the yield of methyl methacrylate is markedly improved. For example, over the VSi8P2,g catalyst, the yields of methyl methacrylate, methacrylic acid, and propionic acid reach 42, 6, and 20 mol%, respectively, based on the charged HCHO the sum of yields of methyl methacrylate and methacrylic acid reaches 48 mol% based on HCHO. The yield of methyl methacrylate increases as the methyl propionate/HCHO molar ratio is increased, for example, with the molar ratio of 4.0, the sum of yields of methyl methacrylate and methacrylic acid reaches 68 mol% based on the charged HCHO. As for the selectivity, the selectivity based on HCHO increases as the methyl propionate/HCHO ratio is increased, while the selectivity based on methyl propionate decreases. With a methyl propionate/HCHO molar ratio of 4.0, the selectivity based on HCHO is 100 mol%. On the other hand, when the molar ratio is 1.2, the selectivity based on methyl propionate becomes 100 mol%. 

Methyl methacrylate Methacrylic acid, glacial Ethylene glycol dimethacrylate Chlorosulfonated polyethylene ... 

IV. The fourth type includes polymerization in the presence of ionic macromolecular emulsifier. In this case, monomers such as styrene, methyl methacrylate, methacrylic acid, acrylonitrle, etc. were polymerized with the neutralized epoxy-g-(methacrylic acid-styrene) copolymer as emulsifier. The initiator used was a redox system composed of sodium formaldehyde sulfoxylate-tert. butyl hydroperoxide. The base used for neutralization was dimethyl ethanol amine. 

Methacrylic acid, ethyl ester. See Ethyl methacrylate Methacrylic acid isobornyl ester. See Isobornyl methacrylate Methacrylic acid, isobutyl ester. See Isobutyl methacrylate Methacrylic acid, isodecyl ester. See Isodecyl methacrylate Methacrylic acid lauryl ester. See Lauryl methacrylate Methacrylic acid, methyl ester. See Methyl methacrylate Methacrylic acid methyl ester polymers. See Polymethyl methacrylate Methacrylic acid, monoester with 1,2-propanediol. See Flydroxypropyl methacrylate... 

The variability in the pyrolysis profiles of the different classes of coatings is self-evident. The interpretation of the composition revealed is as follows The acrylic lacquer (General Motors) is a methyl methacrylate/methacrylic acid copolymer plasticized with dibutyl-, butyl cyclohexyl-, and butyl benzyl phthalates. The acrylic enamel (Ford) is a styrene/ethylhexyl acrylale/methyl methacrylate terpolymer. The alkyd enamel (Honda) pyrolysis profile indicates that the paint resin is an orthoph-thaUc alkyd containing a butylated-amino resin cross-linking component. 

Figure 16.6 shows the adsorption isotherms (at 20°C) of two graft copolymers based on a poly(methyl methacrylate-methacrylic acid) backbone and PEO chains, namely Atlox 4913 and Hypermer CG-6(a) (17). The latter has a higher proportion of poly(methacrylic acid) and hence contains a lower PEG chain density than Atlox 4913. Two latex particles with diameters of 427 and 867 nm were used for these measurements. The adsorption isotherms are of a Langmuir type and the plateau value does not seem to depend on the particle size. However, the adsorption plateau value of Hypermer CG-6(a) (1.2mg m ) is lower than that obtained when using Atlox 4913 (1.6mg m ). This is due to the... 

Copolymer of methyl methacrylate, methacrylic acid, and ethyl acrylate... 

Poly(methyl methacrylate/methacrylic acid) Poly(vinyl methyl ether/mono ethyl maleate) Poly(vinyl methyl ether/monobutyl maleate) Poly(vinyl methyl ether/mono-iso-propyl maleate) Poly(vinylsulfonic acid)... 

The copolymer of methyl methacrylate-methacrylic acid (PMM/MA) was prepared by the partial hydrolysis of poly(methyl methacrylate) (Polysciences Inc., High M.VJ.) as described in the literature(13). a typical preparation procedure for PIIl l/ilA (MA content 4.1 mole %) is as follows Fine-Powdered Poly(methyl methacrylate)(40 g) was suspended in 350 ml of isopropanol in a 1 3-... 

TA1 Tager, A. A., Yushkova, S. M., Adamova, L. V., Kovylin, S. V., Berezov, L. V., Mozzhukhin, V. B., and Guzeev, V. V., Thermodynamics of interaction of methyl methacrylate-methacrylic acid copolymers with plasticizers and their mixtures (Russ.), Vysokomol. Soedin., Ser. A, 33, 357, 1991. 

Methyl methacrylate/ methacrylic acid 2, Methyl methacrylate... 

Tredici et al studied the frontal copolymerization of acrylic acid-methacrylic acid, methyl methacrylate-methacrylic acid and styrene-methacrylic acid. They studied the velocity dependence on initiator concentration. They claimed that the elevated temperature of the front created a more random copolymer because the reactivity ratios were closer to one than under typical polymerization conditions. They performed numerical simulations for the velocity dependence and conversion on initiator concentration but strangely neither in experiments nor simulations did they study any dependence on monomer feed ratios. 

Some of the earliest work on the chemical inclusion of organotin into polymers was by Russian scientists in the late 1950s and early 1960s. Kochkin et al. in 1959 synthesized niethylstannic methacrylate and made homopolymers and copolymers of it through reaction with acrylonibUe, methyl methacrylate, methacrylic acid, styrene, divinylbenzene, pentaerythritol ester, methacrylic acid, and cyclopendiene. The organotin ester was made from reaction of dialkyl or diaryl stannic oxide with the respective acids, 13. ... 

Many papers report the formation of lead-containing polymers but the formulations do not necessarily produce lead covalently bonded as part of a polymer. For instance, Honda and Kaetsu described the production of a transparent, easily moldable polymer useful for protection against radiation by dissolving a specified amount of an organolead compormd in a specified monomer ntixture. Thus lead acetate is dissolved in a monomer mixture containing methyl methacrylate, methacrylic acid, and a-methyl styrene, and free-radical s polymerization carried out. The resulting mixture is sandwiched between glass plates to obtain the desired product. 

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