Branched polyesters

Details Branched polyesters Branched polyesters

C - Chemistry, Metallurgy

08

G

402/201

C08G 63/68 (2006.01) C08G 59/42 (2006.01) C08G 63/685 (2006.01) C08G 69/44 (2006.01) C08L 63/00 (2006.01) C09D 163/00 (2006.01)

Patent

CA 1262992

Branched polyesters Abstract of the Disclosure The invention relates to compounds with structures of the for- mulae I to IV Image (I), Image (II), Image (III), Image (IV), in which formulae Tr is a radical of formula V or VI Image (V), Image (VI), A is -O- or -NR1-, R1 is hydrogen or a monovalent organic radical, X is a di- or trifunctional radical of a hydroxycarboxylic or amino- carboxylic acid after removal of the functional groups, R2, if m is 1, has one of the meanings of R1, or R2, if m 13 2, is a free electron pair, R is the radical of a diol after removal of the two hydroxyl groups, Y is the radical of a dicarboxylic acid after removal of the two carboxyl groups, Z has one of the meanings of Y, but may additionally also carry carboxylic acid or sulfonic acid radicals as substituents, R' is the divalent radical of a hydroxycarboxylic acid after removal of the carboxyl group and the hydroxyl group, X' is the divalent radical of an aminoalcohol after removal of the amino and the hydroxyl group, n is an integer from 0 to 40, o is an integer from 1 to 40, m is 1 or 2, q is 0 or 1 and p, independently of the radical Tr, is 3 or 4, M is a radical -W-Q-W-, wherein W is -O-, -NR1- or -NR1-X"-NR1-OC-, X" is the divalent radical of a diamine after removal of the amino groups, and Q is a divalent oligomer radical containing 1 to 60 monomer units, which radical is selected from the group consisting of 1,2-poly- butadiene, 1,4-polybutadiene, acrylonitrile/butadiene copolymers, polyethers or polydialkylsiloxanes,with the proviso that the compounds may not have a melting point above 200°C. These compounds can be used as components of hot melt adhesives or as epoxide hardeners. The carboxyl-terminated compounds can also be used as components of powder coating compositions.

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