Copolyester-ether polymers

Details Copolyester-ether polymers Copolyester-ether polymers

1996-11-04

1997-07-01

Jordan, Charles T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C08G 6366

Patent

active

H00016691

ABSTRACT:
A segmented copolyester-ether polymer comprises 9.5 to 33 percent by weight hard segment residues of polybutylene terephthalate and 0.5 to 67 percent by weight soft segment residues of a polyether polyol comprised of n units of residue (1) and m units of residue (2), wherein the total value of n+m is in the range 2 to 70, m/(n+m) is in the range 0.05 to 0.98, and residues (1) and (2) have the structures: ##STR1## The polyether polyol is further characterized in that at least 95 percent of the hydroxyl groups are primary hydroxyl groups.

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