GB751934A - Improvements in or relating to the copolymerisation of a 2-aryl-alkene-1 and an alpha, beta-olefinic aldehyde - Google Patents

Abstract

An alpha-beta olefinic aldehyde is copolymerized with a 2-arylalkene-1 containing at least three carbon atoms in the alkene group by heating a liquid mixture of the monomers at 50 DEG to 200 DEG C., preferably 80 DEG to 150 DEG C. The aldehyde may be acrolein or 2-methyl, 2-ethyl, 2-isopropyl, 2-isobutyl, 2-neopentyl, 2-octyl or 2-phenyl propenal. The hydrocarbon may be 2-phenyl-propene, -butene-1, -pentene-1, -3-methyl-butene-1, -octene-1 or -octadecene-1, 2 - (4 - methylphenyl) propene - 1, 2 - (2 - isopropylphenyl) butene-1, 2-(4-phenyl-phenylheptene-1) heptene-1, 2-(2,4-dimethyl phenyl) propene-1, 2-(2,4,6-trimethylphenyl) propene-1, or 2-naphthenyl-propene-1. Copolymerization may be effected in the presence of a peroxy catalyst such as benzoyl, acetyl, lauroyl or ditertiary-butyl peroxide or tertiary-butyl hydroperoxide. The copolymers are soluble in acetone, benzene, toluene, dioxane, chloroform and pyridine, and may be used in combination with nitrocellulose, polyvinyl chloride-acetate and varnish oils in the production of films and for moulding. The copolymers will undergo further reaction in the following ways: (a) hydrogenation to form polyhydric alcohols by reduction of the aldehyde groups. These polyhydric alcohols may be mixed with heat-convertible urea-formaldehyde or melamine-formaldehyde resins and baked as a film to form surface coatings; they may be esterified with polycarboxylic acids to form new alkyd resins, or with unsaturated fatty acids, such as are obtainable from soybean oil, dehydrated castor oil and linseed oil to form synthetic drying oils; (b) oxidation to obtain resinous polycarboxylic acids which may be esterified with alcohols to give esters or neutralized with ammonia and/or soda to give salts useful as soil conditioners; (c) reaction with mercaptans to form polymercaptals; (d) reaction with hydroxylamine to form polyoximes; (e) reaction with formaldehyde, ammonia, amines, phenols, urea or melamine to give modified resins.