Cyclic polyester oligomer polymerization

Details Cyclic polyester oligomer polymerization Cyclic polyester oligomer polymerization

1986-10-20

1988-07-12

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528176, 528182, 528190, 528272, 528274, 528279, 528298, 528355, 528370, 528371, 549264, 549267, 549268, 549269, C08G 6300

Patent

active

047571322

ABSTRACT:
Cyclic polyester and especially polyarylate oligomers, typically having degrees of polymerization from 2 to about 7, are prepared by reacting a bisphenol such as bisphenol A or 6,6'-dihydroxy-3,3,3',3'-tetramethylspiro(bis)indane with a dicarboxylic acid chloride such as isophthaloyl or terephthaloyl chloride in the presence of a catalyst, under conditions of low concentration. The cyclic oligomers may be polymerized to linear polyesters by contact with a transesterification catalyst at a temperature in the range of about 200.degree.-300.degree. C.

REFERENCES:
Wick et al., Angew. Makromol. Chem., 112, 59-94, (1983).

Affiliated with

Also associated with

Rating

Cyclic polyester oligomer polymerization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cyclic polyester oligomer polymerization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclic polyester oligomer polymerization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-665115