Polyesters and their use in compostable products such as disposa

Details Polyesters and their use in compostable products such as disposa Polyesters and their use in compostable products such as disposa

1992-11-06

1994-03-22

Acquah, Samuel A.

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

528272, 528295, 528301, 528302, 5283086, 525437, 525450, 525471, 428224, 428364, 428480, 428481, 521182, 604372, A61F 1315

Patent

active

052959856

ABSTRACT:
The invention provides 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 compositing 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 polyester ingredients, such as polyethylene terephthalate, copolymerized with an alkali metal or alkaline earth metal 4-sulfophthalic acid derivative, and other ingredients, such as polyethylene ether glycols and/or non-aromatic diacids, such as adipic and glutaric acids.

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patent: 4418116 (1983-11-01), Scott
patent: 4483976 (1984-11-01), Yamamoto et al.
patent: 4526738 (1985-07-01), Miyoshi et al.
patent: 4704329 (1987-11-01), Hancock et al.
patent: 4883706 (1989-11-01), Grosjean
Ingamells, J. Appl. Poly. Sci., vol. 26, 4087-4101 (1981).
Grassie, "Developments in Polymer Degradation--5"", pp. 112-119, (1984), Applied Science Publishers.

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