Synergistic stabilizer compositions for polyols and...

Details Synergistic stabilizer compositions for polyols and... Synergistic stabilizer compositions for polyols and...

C - Chemistry, Metallurgy

09

K

C09K 15/08 (2006.01) C07C 41/46 (2006.01) C07C 43/11 (2006.01) C08G 18/48 (2006.01) C08K 5/46 (2006.01) C09K 15/26 (2006.01)

Patent

CA 2081393

ABSTRACT Polyether polyols and polyurethane foams are stabilized by including therein a liquid stabilizer composition of (a) 2,6-di-tert-butyl-4-sec- butylphenol, (b) a reaction product of diisobutylene, styrene and diphen- ylamine and (c) phenothiazine or C9-26-alkyl substituted phenothiazine and wherein the ratio of the phenol to the reaction product is about 1:5 to 5:1 and the ratio of the mixture of components (a) and (b) to the phenothiazine compound is ahout 5.0 : 0.1 to 4.0 : 1Ø The stabilizer composition may further contain trihydrocarbyl phosphite to stabilize the color of same.

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