Stabilizing urethanes with antioxidants

Details Stabilizing urethanes with antioxidants Stabilizing urethanes with antioxidants

1985-01-14

1986-06-24

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521116, 521117, 521121, 521176, 521177, 524738, 524742, 524750, C08G 1814

Patent

active

045968365

ABSTRACT:
Polyurethane can be made having improved heat stability, sufficient to withstand paint oven temperatures by mixing or dispersing about 0.5 to 10 parts or more of an organic monosulfide or disulfides, preferably where the organo radical is a hydroxyl phenyl or hydroxyl alkyl substituted phenyl radical per 100 parts of the polyurethane reactants and reacting to form the polyurethane.

REFERENCES:
patent: 3155625 (1964-11-01), Long et al.
patent: 3331792 (1967-07-01), O'Shea
patent: 3933692 (1976-01-01), Kushlefsky et al.
patent: 4225453 (1980-09-01), DePaul et al.
patent: 4374970 (1983-02-01), Robinson

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