Patent GB-1072058-A (GB)
Title: Production of copolymers of vinyl glycols and other ethylenically unsaturated compounds
Inventor: NAARMANN HERBERT
IPC: C08F16/00
Filed: 1964-09-10
Abstract: Copolymers of high molecular weight are prepared by copolymerizing in the presence of free radical forming initiators 0.5 to 30% by weight of one or more vinyl glycols of formula <FORM:1072058/C3/1> in which R1 is hydrogen or a saturated or unsaturated organic radical and R2 is a saturated or unsaturated organic radical, both containing 1 to 12 carbon atoms, or R1 and R2 are organic radicals joined together to form a cyclic structure, with 99.5 to 70% by weight of at least one other ethylenically unsaturated compound having two to twenty carbon atoms. Specified glycols are 3,4-dimethyl butene (1)-3,4-diol, 3,4,4-trimethyl butene (1)-3,4-diol, 3,4 - dimethyl - 4 - phenyl butene (1) - 3,4-diol, -3 - methyl - 4 - cyclohexyl butene (1) - 3,4 - diol, 3 - methyl - 4 - p methoxyphenyl - 4 - phenyl butene (1) - 3,4 - diol, 3 - methyl - 4 - methyl- 4 - isobutyl butene (1) - 3,4 - diol, 3 - methyl- 4 - methyl - 4 - phenyl butene (1) - 3,4 - diol, 3 - methyl - 4,4 - diphenyl butene (1) - 3,4 - diol, 3 - methyl - 4 - phenyl butene (1) - 3,4 - diol and 2 - hydroxy - 2 - (11 - hydroxycyclohexyl) propene (1).  Many suitable comonomers are listed including conjugated dienes, olefins, vinyl aromatic compounds, esters, nitriles, amides, N-methylol amides and N-alkoxymethyl amides of acrylic and methacrylic acids, fumaric, maleic and itaconic acids and esters, maleic anhydride, vinyl esters and vinyl ethers. Polymerization may be effected in bulk, suspension, emulsion and solution, in the presence of buffers, protective colloids and solvents, e.g. alcohols, ketones, hydrocarbons, cyclic ethers, formamide or dimethyl formamide. Specified initiators are organic peroxides, azo compounds, potassium and ammonium persulphates and redox systems thereof with ascorbic acid and sodium hydrosulphite, and metal chelates, e.g. manganic and cobaltic acetylacetonates. The copolymers may be reacted with formaldehyde and amines, crosslinked with diisocyanates and dehydrated, and may be used in coating compositions and adhesives, and for finishing paper and textiles. Examples describe the copolymerization of 3,4,4 - trimethyl butene (1)-3,4 - diol with (1) methyl acrylate and (2) methyl acrylate and styrene in the presence of azo diisobutyronitrile; of (3) 3,4-dimethyl-4-phenyl butene (1)-3,4-diol and n-butyl acrylate and (5) 3 - methyl - 4,4 - diphenyl butene (1)-3,4-diol, ethylene and vinyl acetate in benzene in the presence of lauroyl peroxide; of (4) 3-methyl-4-cyclohexyl butene (1)-3,4-diol, ethylene and optionally vinyl acetate, (8) 3-methyl-4-phenyl butene (1)-3,4-diol, butadiene and dibutyl maleate, (9) 3-methyl-4-phenyl butene (1)-3,4-diol, butadiene, styrene and acrylonitrile and (10) 3 - methyl - 4 - phenyl - 4 - ethyl butene (1)-3,4-diol, 2-ethylhexyl acrylate, acrylic acid and acrylonitrile in aqueous dispersion in the presence of potassium persulphate, sodium pyrophosphate and sodium alkyl sulphates; of (6) 3-methyl-4,4-diphenyl butene (1)-3,4-diol, ethylene and vinyl acetate in benzene in the presence of cobaltic acetylacetonate; and of (7) 3 - methyl - 4 - p - methoxyphenyl - 4-phenyl butene (1)-3,4-diol, methyl acrylate and n-butyl acrylate in benzene in the presence of manganic acetylacetonate and dodecyl mercaptan.