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US 2006/0135734 A1Published application
Poly(trimethylene terephthalate) composition and shaped articles prepared therefrom
AssigneeE.I. duPont de Nemours and Company
InventorJoseph Kurian
Life of this patent
Estimating the term…
Abstract
Poly(trimethylene dicarboxylate) prepared by polycondensation of: (a) 1,3-propanediol; (b) aliphatic or aromatic diacid or diester; and (c) from about 0.01 to about 0.2 mole %, based on the total number of moles of 1,3-propanediol and diacid or ester, of polyfunctional reactant containing three or more carboxylic acid type groups or hydroxy groups. Shaped articles, including bottles, are made from the poly(trimethylene dicarboxylate).
Claims34
A poly(trimethylene dicarboxylate) prepared by polycondensation of:
- (a) 1,3-propanediol;
- (b) aliphatic or aromatic diacid or diester;
- and (c) from about 0.01 to about 0.2 mole %, based on the total number of moles of 1,3-propanediol and diacid or ester, of polyfunctional reactant containing three or more carboxylic acid type groups or hydroxy groups.
Dependencies are inferred from the claim text.