Process for the conversion of poly(ethylene terephthalate) waste

Details Process for the conversion of poly(ethylene terephthalate) waste Process for the conversion of poly(ethylene terephthalate) waste

1994-03-29

1995-09-19

Foelak, Morton

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

Synthetic resins

Process of treating scrap or waste product containing solid...

C08J 1104

Patent

active

054516110

ABSTRACT:
The present invention relates to a process for the conversion of poly(ethylene terephthalate) waste to poly(alkylene terephthalate) useful as engineering thermoplastic, which comprises reacting Poly(ethylene terephthalate) powder with a diol containing 3-12 carbon atoms in the liquid phase in the presence of a catalyst at a temperature in the range 180.degree.-270.degree. C. under reduced pressure and inert atmosphere.

REFERENCES:
patent: 3344091 (1967-09-01), Russin et al.
patent: 5252615 (1993-10-01), Rao et al.
patent: 5266601 (1993-11-01), Kyber et al.

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