Discoloration-resistant spandex

Details Discoloration-resistant spandex Discoloration-resistant spandex

1990-02-09

1991-07-02

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 56, 524 57, 524 58, 524109, 524432, 525458, C08L 7504, C08L 108, C08K 515

Patent

active

050286420

ABSTRACT:
An improved spandex polymer composition provides fibers or films of the composition with increased heat set efficiency and greater discoloration resistance. The composition contains zinc oxide and a polyhydroxy additive selected from certain sugars, reduced sugars and/or polyhydroxy urethanes formed from these sugars or reduced sugars and an organic diisocyanate.

REFERENCES:
patent: 2929804 (1960-03-01), Steuber
patent: 3097192 (1963-07-01), Schilit
patent: 3428711 (1969-02-01), Hunt
patent: 3555115 (1971-01-01), Bottomley et al.
patent: 4340527 (1982-07-01), Martin
patent: 4374237 (1983-02-01), Berger et al.
patent: 4499221 (1985-02-01), Saitoh et al.

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