Polyester resin gelkote composition

Details Polyester resin gelkote composition Polyester resin gelkote composition

1985-04-29

1986-05-06

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 75, 560 25, 560 26, 560158, C08G 1862

Patent

active

045873232

ABSTRACT:
An improved hydroxyl functional urethane-extended polyester is based on the condensation reaction of fumaric acid, one or more non-aromatic polyols, azelaic acid and optionally one or more non-aromatic carboxylic acids including lauric acid or stearic acid. The hydroxylated polyester urethane oligomer possesses a molecular weight below 2600 and a mole ratio of hydroxyl groups to urethane linkage of from 0.5 to 6. Gel coats prepared from these oligomers exhibit superior water resistance and improved weathering characteristics.

REFERENCES:
patent: 4289682 (1981-09-01), Peters
patent: 4304883 (1981-12-01), Fuju et al.
patent: 4413111 (1983-11-01), Markusch et al.

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