Copolymers containing hydroxyl and carboxyl groups, their...

Details Copolymers containing hydroxyl and carboxyl groups, their... Copolymers containing hydroxyl and carboxyl groups, their...

C - Chemistry, Metallurgy

08

F

C08F 220/18 (2006.01) C08F 8/30 (2006.01) C08F 220/04 (2006.01) C08F 220/32 (2006.01) C09D 133/08 (2006.01) C09D 133/10 (2006.01)

Patent

CA 2147723

Low-viscosity copolymers useful in coating compositions, containing hydroxyl and carboxyl groups are obtained by free-radical polymerization of A) from 3 to 50% by weight of one or more glycidyl esters of aliphatic saturated monocarboxylic acids having a tertiary or quaternary a carbon atom, and B) from 97 to 50% by weight of at least two olefinically unsaturated copolymerizable monomers of which at least one contains at least one COOH group and at least one is sterically hindered, the quantity of COOH groups in component B exceeding the quantity of epoxy groups in component A to such an extent that the resulting copolymer has an acid number of at least 15 mg of KOH/g.

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