Stabilization of polyether polyols and polyurethane foams prepar

Details Stabilization of polyether polyols and polyurethane foams prepar Stabilization of polyether polyols and polyurethane foams prepar

1980-04-21

1981-05-05

Welsh, Maurice J.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

521117, 521121, 521128, 521130, C08G 1814

Patent

active

042657830

ABSTRACT:
Polyols stabilized against oxidative degradation with a synergistic combination of a sterically hindered phenol and 4,4'-bis(.alpha.,.alpha.-dimethylbenzyl)diphenyl amine are improved by replacing a portion of either the phenol or the amine or a portion of both with a phenothiazine compound.

REFERENCES:
patent: 3072605 (1963-01-01), Rogers et al.
patent: 3214397 (1965-10-01), Cox
patent: 3428567 (1969-02-01), Newton
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: 4021385 (1977-05-01), Austin et al.
patent: 4070304 (1978-01-01), Hinze
patent: 4143219 (1979-03-01), Hensch
patent: 4146687 (1979-03-01), Reale

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