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Article: FIBRES AND YARNS - Cheaper polyesters offered for compostable products
- Article from:
- Medical Textiles
- Article date:
- May 1, 1995
CopyrightCOPYRIGHT 1995 International Newsletters. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Low-cost compostable polyesters that should be suitable for use in disposable products such as diapers, for which they exhibit adequate strength and toughness properties, have been developed in the USA by E.I. Du Pont de Nemours of Wilmington, Delaware.
The polyesters (described in US patent 5 295 985) are based on polyester ingredients such as polyethylene terephthalate, which are copolymerised with an alkali metal or alkaline earth metal 4-sulphophthalic acid derivative, while other ingredients might be polyethylene ether glycols and/or non -aromatic diacids such as adipic or glutaric acid.
The polyesters can be converted to filaments by conventional ...