Method for stabilizing polyurethane foam using an additive combi

Details Method for stabilizing polyurethane foam using an additive combi Method for stabilizing polyurethane foam using an additive combi

1988-08-11

1990-04-03

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521115, 521117, 521118, 521121, 252384, 524700, 524719, C08G 1814

Patent

active

049141376

ABSTRACT:
This invention relates to the stabilization of polyurethane foam by using a combination of a phenothiazine with at least a co-stabilizing effective amount of a compound selected from the group consisting of certain dithiocarbamates, thiuramsulfides, mercaptobenzothiazole, phosphites, phosphonites, phenolic antioxidants, pentaerythritol-tetrakis(beta-laurylthiopropionate), 4,4'-thiobis(2-t-butyl-5-methylphenol) and mixtures thereof.

REFERENCES:
patent: 4010211 (1977-03-01), Preston et al.
patent: 4265783 (1981-05-01), Hinze

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