27-03-1957 дата публикации
Номер: GB0000770771A
Автор:
Oil-soluble copolymers consisting of (A) a compound having an olefinic double bond and an oil-solubilizing group of 4 to 30 aliphatic carbon atoms and (B) an alpha, beta-unsaturated carboxylic acid in which from 1 to 10 of the carboxyl groups are ester-linked to a poly-1,2-alkylene oxide glycol and from 1 to 10 of the carboxyl groups are ester linked to an alcohol which, in addition to the hydroxy group through which the ester linkage is formed, is substituted by at least one hydroxyl, mercapto, nitro, or amine radical are made by (1) polymerizing an appropriate monomeric mixture, (2) introducing into a homopolymer of (A) the desired radicals or (3) aftertreating a copolymer of (A) and an alpha, beta-unsaturated carboxylic acid. (A) may be selected from an extensive list including hexene-1, cyclohexene and substituted cyclohexenes, p-octylstyrene, 2-hexadecyl-butadiene-1,3, vinyl n-butyl ether, allyl cyclohexyl ether, methallyl n-hexyl ether, vinyl p-octylphenyl ether, 1-decenyl 2-phenylbutyl ether, vinyl caproate, allyl stearate, methallyl palmitate, dodecyl acrylate, cyclohexyl methacrylate, decyl vinyl acetate, p-tert.-amylphenyl octadecyl maleate, di - 2 - ethylhexyl maleate, di-dodecyl mesaconate and citraconate, and 1-hexadecenyl myristate. The alpha, beta unsaturated acid may be acrylic, methacrylic, crotonic, tiglic, angelic, alpha-ethylacrylic, betaethyl crotonic, maleic, fumaric, itaconic, glutaconic, citraconic, mesaconic or aconitic. The poly-(1,2-alkylene oxide) glycols may be diethylene glycol, pentaethylene glycol, nonaethylene glycol, tetra-1,2-propylene glycol, the monobutyl ether of heptaethylene glycol or a polymer of one or more 1,2-alkylene oxides of molecular weight up to 10,000 in which, if desired, at least one of the end groups is replaced by alkoxy or acyloxy groups. The other esterifying compound may be ethylene glycol, ethanolamine, 1,2-propylene glycol, sorbitol, mannitol, glucose, erythritol, pentaerythritol, dipentaerythritol, ...
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