Fiber from polyether-based spandex

Details Fiber from polyether-based spandex Fiber from polyether-based spandex

1989-05-31

1990-11-27

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...

156433, 428225, C08G 1810

Patent

active

049736477

ABSTRACT:
An improved spandex fiber is provided that is particularly useful for use in tricot-knit fabrics with nylon yarns. The fiber is formed from a polyether-based spandex polymer made from a poly(tetramethylene ether) glycol of about 2,200 molecular weight which was capped with methylene-bis(4-phenylisocyanate) and the resultant product then chain extended with a diamine mixture of ethylene diamine and 2-methyl-1,5-pentanediamine in a molar ratio of about 70/30.

REFERENCES:
patent: 2929803 (1960-03-01), Frazer et al.
patent: 3507834 (1970-04-01), Wittbecker
patent: 3549596 (1970-12-01), McMillin et al.

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