Polyurethane foams resistant to discoloration

Details Polyurethane foams resistant to discoloration Polyurethane foams resistant to discoloration

1974-12-30

1977-05-03

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 459QB, 260 775SS, 2606115, C08G 1814, C08K 513, C08G 1848

Patent

active

040213854

ABSTRACT:
Polyether polyols may be synergistically stabilized against oxidation by incorporating therewith 4,4'-bis(alphadimethylbenzyl) diphenyl amine and a 2,6-di-t-butyl-4-(lower alkyl) phenol such as 2,6-di-t-butyl-4-methyl phenol or 2,6-di-t-butyl-4-butyl phenol. The stabilized polyols inhibit color formation when employed in the preparation of polyurethane foams.

REFERENCES:
patent: 3437694 (1969-04-01), Austin
patent: 3494880 (1970-02-01), Austin
patent: 3567664 (1971-03-01), Haring
patent: 3637865 (1972-01-01), Haring
patent: 3715381 (1973-02-01), Spaunburgh et al.
patent: 3734880 (1973-05-01), Finelli
patent: 3904706 (1975-09-01), Hoeschele
patent: 3942672 (1976-03-01), Saracsan

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