Stabilizer compositions for polyols and polyurethane foam
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United States of America Patent
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Jun 12, 1990
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N/A
app pub date -
May 24, 1989
filing date -
May 24, 1989
priority date (Note) -
Expired
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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.
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