Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1991-01-25
1992-03-17
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528295, 528301, 528302, 5283086, 525437, 525450, 525471, 428480, C08G 6320
Patent
active
050970046
ABSTRACT:
The invention provides a novel polyesters, fibers and films, nonwovens from the fibers and disposable products of the polyesters such as diapers. The products are degradable under the conditions typically existing in waste composting processes, have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers. The polyesters are based upon polyethylene terephthalate copolymerized with a polyethylene glycol and a 5-sulfoisophthalic acid and, if desired, a polyethylene ether such as diethylene glycol.
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Gallagher Francis G.
Hamilton Cathy J.
Tietz Raymond F.
Acquah Sam A.
E. I. Du Pont de Nemours and Company
Kight III John
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