Abstract AND SAID SHORT CHAIN UNITS BEING REPRESENTED BY THE FORMULA A stabilized copolyester composition consisting essentially of (a) a multiplicity of recurring long chain units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being represented by the formula LINKAGES WHERE X is O, S or NH and (c) up to about 5 percent by weight of an antioxidant. LINKAGES OR TAUTOMERIC WHERE G is a divalent radical remaining after the removal of terminal hydroxyl groups from a poly(alkylene oxide) glycol having a molecular weight of about 400-6000 and a carbon to oxygen ratio of about 2.0-4.3; R is a divalent radical remaining after removal of carboxyl groups from a dicarboxylic acid having a molecular weight less than about 300 and D is a divalent radical remaining after removal of hydroxyl groups from a diol having a molecular weight less than about 250; provided said short chain ester units amount to about 15-95 percent by weight of said copolyester, (b) an effective concentration of a compound containing
A COPOLYETHERESTER COMPOSITION STABILIZED AGAINST OXIDATIVE DEGRADATION WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF (A) A COPOLYETHERESTER CONTAINING A MULTIPLICITY OF RECURRING LONG CHAIN ESTER UNITS AND SHORT CHAIN ESTER UNITS JOINED HEAD-TO-TAIL THROUGH ESTER LINKAGES, SAID LONG CHAIN ESTER UNITS BEING REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
46 words
A COPOLYETHERESTER COMPOSITION STABILIZED AGAINST OXIDATIVE DEGRADATION WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF (A) A COPOLYETHERESTER CONTAINING A MULTIPLICITY OF RECURRING LONG CHAIN ESTER UNITS AND SHORT CHAIN ESTER UNITS JOINED HEAD-TO-TAIL THROUGH ESTER LINKAGES, SAID LONG CHAIN ESTER UNITS BEING REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
24 words
The composition of claim 1 in which R'' and R'''' are independently selected from the group consisting of C2-C12 aliphatic and C4-C16 cycloaliphatic radicals.
Claim 4
Dependent Claim
17 words
The composition of claim 1 wherein the urea is formed by reacting a diisocyanate with a diamine.
Claim 5
Dependent Claim
15 words
The composition of claim 3 wherein the diisocyanate is 1,6-hexanediisocyanate and the diamine is 1,12-diamino-dodecane.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein said antioxidant is an arylamine or a hindered phenol.
Claim 7
Dependent Claim
15 words
The composition of claim 1 wherein said antioxidant is 4,4''-bis( Alpha , Alpha -dimethylbenzyl) diphenylamine.
Claim 8
Dependent Claim
15 words
The composition of claim 1 wherein said antioxidant is 4,4''-bis( Alpha , Alpha -dimethylbenzyl) diphenylamine.
Claim 9
Dependent Claim
19 words
The composition of claim 1 wherein said antioxidant is present in the amount of 0.2 to 5 weight percent.
Claim 10
Dependent Claim
37 words
The composition of claim 7 wherein said poly(alkylene oxide) glycol is poly(tetramethylene oxide) glycol having a molecular weight of 600-2000, the diol is 1,4-butanediol and R is derived from a mixture of dimethyl terephthalate and dimethyl phthalate.
Claim 11
Dependent Claim
12 words
The composition of claim 7 wherein said dicarboxylic acid is dimethyl terephthalate.