Copolyester of polyethylene terephthalate and sulfonyl diphenol

Details Copolyester of polyethylene terephthalate and sulfonyl diphenol Copolyester of polyethylene terephthalate and sulfonyl diphenol

1982-10-25

1984-03-13

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525437, C08G 6318, C08G 6368

Patent

active

044368933

ABSTRACT:
A copolyester of polyethylene terephthalate and sulfonyl diphenol and a process for its preparation are provided. The copolyester has an instrinsic viscosity, glass transition temperature, and impact strength comparable to polyethylene terephthalate homopolymer but exhibits an increased crystallization time and is capable of being molded into clear articles. The process for preparing the copolyester comprises the steps of forming a polyethylene terephthalate prepolymer and polycondensing the prepolymer, preferably in the solid phase, with from about 2 to about 20 mole percent of sulfonyl diphenol in the presence of a suitable metallic catalyst system.

REFERENCES:
patent: 2973339 (1961-02-01), Muenster et al.
patent: 4145517 (1979-03-01), Go
patent: 4163100 (1979-07-01), Bier et al.
patent: 4188357 (1980-02-01), Go
patent: 4307060 (1981-12-01), Go
patent: 4330661 (1982-05-01), Go
patent: 4384106 (1983-05-01), Go et al.

Affiliated with

Also associated with

Rating

Copolyester of polyethylene terephthalate and sulfonyl diphenol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Copolyester of polyethylene terephthalate and sulfonyl diphenol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copolyester of polyethylene terephthalate and sulfonyl diphenol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-492769