Spandex formed with a mixture of diamines

Details Spandex formed with a mixture of diamines Spandex formed with a mixture of diamines

1987-12-30

1989-01-17

Kendell, Lorraine T.

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...

428364, 428 98, 528 61, 528 64, 528 78, D02G 300

Patent

active

047988800

ABSTRACT:
A shaped article of a polyurethane-urea spandex formed from polyalkaneether glycol that was capped with tertiary aralkyl diisocyanate and then chain extended with a specific tricomponent diamine mixture has unexpectedly good heat settability. The diamine mixture comprises 25 to 80% of hydrogenated m-phenylenediamine, 10 to 50% of hydrogenated p-phenylendiamine and 10 to 30% of tetrachloro-p-xylylenediamine.

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patent: 4504612 (1985-03-01), Ketterer
patent: 4548975 (1985-10-01), Lewis
patent: 4725636 (1988-02-01), Kausch et al.

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