Semicarbazide/urethane stabilizer

Details Semicarbazide/urethane stabilizer Semicarbazide/urethane stabilizer

1992-01-31

1993-06-15

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 27, 528 62, 5482626, 5482648, 564 34, 564 37, C08K 526, C07C28106, C07D24908

Patent

active

052199096

ABSTRACT:
Mixtures comprising semicarbazide/urethane reaction products of 4-amino-1,2,4-triazole, an aliphatic polyisocyanate and a reduced sugar or glycerol are particularly suited for protecting films, fibers, spandex and other polyurethane articles against discoloration due to exposure to fumes, light and heat.

REFERENCES:
patent: 3399167 (1968-08-01), Rosendahl et al.
patent: 4447571 (1984-05-01), Dabi et al.
patent: 4973618 (1990-11-01), Ulteg
patent: 5028642 (1991-07-01), Goodrich et al.

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