Patent · US Expired

Coatings based on thermoplastic polyesters with addition of an unsaturated polyester as additive resin

US6143841A · kind A · utility

9Cited by

2References

16Claims

0Family size

Assignee

Huels Aktiengesellschaft · DE

Inventors

Rainer Spittka · Voerde, DE
Hans-Dieter Zagefka · Haltern, DE
Dirk Hoppe · Nottuln, DE

Key dates

Filing date	Feb 8, 1999
Grant date	Nov 7, 2000
Priority date	—
Expiry date	Feb 8, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D167/02
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A coating formulation comprises (A) a base polyester consisting of the copolymerization product of at least one aliphatic, cycloaliphatic and/or aromatic polybasic acid and/or anhydride thereof or at least one hydroxycarboxylic acid or derivative thereof and at least one diol, and (B) an additive polyester resin prepared by condensing at least one unsaturated dicarboxylic acid and optionally at least one saturated dicarboxylic acid monomer with at least one diol and/or triol, wherein the proportion of unsaturated additive polyester to base polyester ranges from 0.1-15 parts to 99.9-85 parts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.