Solution for forming thermal resisting polymers

Details Solution for forming thermal resisting polymers Solution for forming thermal resisting polymers

1974-12-06

1976-12-14

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 2232

Patent

active

039975134

ABSTRACT:
A concentrated solution suitable for forming thermal resisting polymers having a high degree of polymerization comprising a mixture of a prepolymer solution prepared by the reaction of an organic diisocyanate or diamine and a molar excess of 1,2,3,4-butanetetracarboxylic acid or an anhydride of the acid, and a blocked polyisocyanate.

REFERENCES:
patent: 3625911 (1971-12-01), Redman
patent: 3673145 (1972-06-01), Minami
patent: 3838088 (1974-09-01), Zalewski
patent: 3896089 (1975-07-01), Noda

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