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US 5,407,984 AGranted
Process for preparing macrocyclic polyester oligomers
AssigneeGeneral Electric Company
InventorsDaniel J. Brunelle, Tohru Takekoshi
Life of this patent
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Abstract
A process for producing macrocyclic polyester oligomers from polyester linears is described and the process comprises the steps of combining polyester linears and organic solvents having tin catalysts present therein.
Claims21
A process for producing macrocyclic polyester oligomers comprising the steps of heating a mixture of:
- (a) polyester linears;
- (b) organic solvents;
- and
- (c) tin catalysts.
1 more element
Dependencies are inferred from the claim text.