Process including depolymerization in polyester reactor for recy

Details Process including depolymerization in polyester reactor for recy Process including depolymerization in polyester reactor for recy

1995-12-07

1996-09-24

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

055591590

ABSTRACT:
Previously used poly(ethylene terephthalate) polyester materials and copolymers thereof, and in particular postconsumer polyester materials, are depolymerized and repolymerized to produce bottle grade polymer containing up to 75% of the previously used material. The process involves the solubilization and depolymerization of the previously used polyester material in a transesterification and/or polymerization mixture containing dimethylterephthalate, ethylene glycol and transesterification products thereof.

REFERENCES:
patent: 3703488 (1972-11-01), Morton
patent: 3884850 (1975-05-01), Ostrowski
patent: 4259478 (1981-03-01), Jackson, Jr. et al.
patent: 4539341 (1985-09-01), Hallmark et al.
patent: 4609680 (1986-09-01), Fujita et al.
patent: 4873268 (1989-10-01), Hallmark et al.
patent: 5223544 (1993-06-01), Burkett et al.
patent: 5298530 (1994-03-01), Gamble et al.
Incorporating Postconsumer Recycled Poly(ethylene terephthalate), Richard et al., ACS Symposium Series, 513, 196 (1992).

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