Stabilization of polyisocyanates against discoloration

Details Stabilization of polyisocyanates against discoloration Stabilization of polyisocyanates against discoloration

1976-03-29

1977-12-20

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C119042

Patent

active

040641570

ABSTRACT:
Polyisocyanates are stabilized against discoloration by the addition of certain hindered phenols such as o,o-di-n-octadecyl-3,5-di-tert-butyl-4-hydroxyl benzyl phosphonate.

REFERENCES:
patent: 2950307 (1960-08-01), France et al.
patent: 2957903 (1960-10-01), Spiegler
patent: 3285855 (1966-11-01), Dexter et al.
patent: 3367870 (1968-02-01), Spivack

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