Highly stretchable elasthane fibres with improved properties

Details Highly stretchable elasthane fibres with improved properties Highly stretchable elasthane fibres with improved properties

1987-11-23

1988-09-20

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 67, 528 76, C08G 1832

Patent

active

047726776

ABSTRACT:
This invention relates to highly stretchable elasthane fibres (Spandex fibres) based on segmented polyurethane(urea)s with improved elastic properties and high resistance to microbial degradation, characterized in that the polyurethane(urea)s used for the synthesis of the elasthanes are prepared from mixtures of relatively high molecular weight copolyester diols in the molecular weight range of from 2,500 to 4,000 and relatively high molecular polytetrahydrofurandiols in the molecular weight range of from 1,500 to 3,000.

REFERENCES:
patent: 4481127 (1984-11-01), Yeater

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