Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1996-03-20
1997-09-16
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
528481, 528485, 528491, 528501, 528502A, 528503, 562479, 562481, C08J 1104, C08G 6300, C08L 6702
Patent
active
056681860
ABSTRACT:
The invention relates to a novel process for depolymerizing polyesters by subjecting the polyesters to catalysts and organic solvents which are substantially free of oxygen and water in order to produce macrocyclic polyester oligomers substantially free of hydroxybutyl terminated linear impurities.
REFERENCES:
patent: 5371112 (1994-12-01), Sayre et al.
Brunelle Daniel Joseph
Kailasam Ganesh
Serth-Guzzo Judith Ann
Wilson Paul Russell
Acquah Samuel A.
General Electric Company
Pittman William H.
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