C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/111, 402/132
C08K 5/00 (2006.01) C08G 18/06 (2006.01)
Patent
CA 1308826
STABILIZER PACKAGE FOR POLYURETHANE COMPRISING A SUBSTITUTED CRESOL AND ANOTHER CO-STABILIZER ABSTRACT OF THE DISCLOSURE: The invention relates to elimination of discoloration in polyurethanes, particularly thermoplastic polyurethanes, by the addition to the reaction mixture from 0.01 to 1 percent by weight, based on the isocyanate component, a stabilizer package characterized as BHT and a compound selected from tris(nonylphenyl) phosphite, tetra- kis(2,4-di-t-butylphenyl)-4,4'-biphenylene diphosphonite, bis(2,4-di-t-butylphenyl)pentaerythritol diphosphite, 2,2'- oxamido-bis-[ethylene-3(3,5-di-t-butyl-4-hydroxyphenyl)] propionate, distearyl thiodipropionate, triisodecyl phos- phite, trilauryl trithiophosphite, distearyl pentaery- thritol, 2,2'-ethylene bis(4,6-di-tertiarylbutylphenol), octadecyl 3-(3',5'-di-t-butyl-4'-hydroxy phenyl) propionate, 4,4'-thio-bis(2-t-butyl-5-methylphenol), 2,2'-methylene-bis- (4-methyl-6-t-butylphenol), tris (3,5-di-t-butyl-4-hydroxy- benzyl) isocyanurate, phenothiazine, tris(2,4-di-t-butyl- phenyl) phosphite, 4,4'-methylene bis(2,6-di-t-butylphenol), 2,6-di-t-butyldimethyl-amino-methylphenol and blends thereof.
524859
Kan Peter Tai-Yuen
Narayan Thirumurti
Basf Corporation
Robic
LandOfFree
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