Polyether polyols stabilized with tocopherol

Details Polyether polyols stabilized with tocopherol Polyether polyols stabilized with tocopherol

1995-09-20

1997-12-09

Gibson, Sharon

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252399, 252401, 252405, 252407, 524258, 549408, 521114, C09K 1522

Patent

active

056956894

ABSTRACT:
.alpha.- and/or .beta.-tocopherol (vitamin E), optionally in combination with octylated diphenylamines, is combined with a polyether polyol having a molecular weight of from about 300 to about 10,000 to stabilize that polyether polyol. Polyether polyols which are stabilized in this manner are particularly useful in the production of polyurethanes and polyurethane foams with a reduced tendency toward discoloration.

REFERENCES:
patent: 4021385 (1977-05-01), Austin et al.
patent: 4070304 (1978-01-01), Hinze
patent: 4371647 (1983-02-01), Minagawa et al.
patent: 4444676 (1984-04-01), Statton et al.
patent: 4925888 (1990-05-01), Aumueller et al.
patent: 5006599 (1991-04-01), Gupta et al.
patent: 5218008 (1993-06-01), Parrish
patent: 5516920 (1996-05-01), Nesvadba et al.

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