Stabilizer compositions for polyols and polyurethane foam

Details Stabilizer compositions for polyols and polyurethane foam Stabilizer compositions for polyols and polyurethane foam

1989-05-24

1990-06-12

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252403, 25218226, 25218227, 521128, 521129, C08G 1814

Patent

active

049333747

ABSTRACT:
Polyether polyols and polyurethane foams are stabilized by including therein a stabilizer composition of 2,6-di-tert-butyl-4-sec-butylphenol and a reaction product of diisobutylene, styrene and diphenylamine wherein the ratio of the phenol to the reaction product is about 1:5 to 5:1. The stabilizer composition may further include trihydrocarbyl phosphite to stabilize the color of same.

REFERENCES:
patent: 2530769 (1950-11-01), Hollis
patent: 3567664 (1971-03-01), Haring
patent: 3637865 (1972-01-01), Haring
patent: 4007230 (1977-02-01), Hinze
patent: 4010211 (1977-03-01), Preston et al.
patent: 4596836 (1986-06-01), Kimball et al.
patent: 4677154 (1987-06-01), Narayan et al.
patent: 4794126 (1988-12-01), Fesman et al.
patent: 4824601 (1989-04-01), Franklin
K. C. Frisch and J. H. Saunders, ed., Plastic Foams, Part 1, 118-125 (1972).
G. L. Statton and J. M. Gaul, Evaluation of Hindered Phenols for Minimization of Foam Discoloration Using the Microwave Scorch Test, 20, J. Cellular Plastics, 346-50 (1984).

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