Diisocyanates and diisocyanate mixtures based on diphenylmethane

Details Diisocyanates and diisocyanate mixtures based on diphenylmethane Diisocyanates and diisocyanate mixtures based on diphenylmethane

1987-03-20

1988-08-02

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Isocyanate esters

521155, C07C11800, C08G 1800

Patent

active

047614986

ABSTRACT:
The instant invention is directed to diisocyanates based on diphenylmethane which may be methyl-substituted and which are characterized in particular by isocyanate groups in the 3,4'- and optionally in the 3,2'-position. The instant invention is also directed to a number of independent processes for their production and to their use as isocyanate component in the production of polyurethanes.

REFERENCES:
patent: 3152162 (1964-10-01), Fischer et al.
patent: 3180883 (1965-04-01), Case
patent: 3375264 (1968-03-01), Sayigh et al.
patent: 3526652 (1970-09-01), Powers
patent: 3644457 (1972-02-01), Konig et al.
patent: 4014914 (1977-03-01), Pistor et al.
patent: 4189354 (1980-02-01), Ellendt et al.

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