06331606 is referenced by 37 patents and cites 21 patents.

A composition and a process for producing the composition are provided. The composition comprises repeat units derived from 1,3-propanediol; an organic acid, preferably a dicarboxylic acid, its salt, its ester, or combinations of two or more thereof; a polyether diol; and a sulfonated comonomer. The polyether diol can be present in the composition in the range of from about 10 to about 80 weight %. The process comprises contacting 1,3-propanediol with the organic acid, the polyether diol, and the sulfonated comonomer. The sulfonated comonomer can have the formula of (R′OC(O))

2

A(R)

z

S(O)

2

OM in which each R′ can be the same or different and is each independently hydrogen, a C

1

to C

4

alkyl group, or a C

1

to C

4

hydroxyalkyl group; each R is independently a C

1

to C

4

alkyl group; A is an alkylene or arylene group; z is a number of from 0 to 2; and M is hydrogen, alkali metal ion, alkaline earth metal ion, quaternary ammonium, or ammonium ion.

Title
Polyester composition and process therefor
Application Number
9/727792
Publication Number
6331606 (B1)
Application Date
December 1, 2000
Publication Date
December 18, 2001
Inventor
Yanhui Sun
Wilmington
DE, US
Assignee
E I du Pont de Nemours and Comapny
DE, US
IPC
C08G 63/68
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