Process for producing thermosetting resins

Details Process for producing thermosetting resins Process for producing thermosetting resins

1974-08-28

1976-09-07

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775R, 260830P, C08G 1800, C08G 1818, C08G 1820, C08G 1822

Patent

active

039793656

ABSTRACT:
Thermosetting resins are produced by blending 1 equivalent of a polyoxazolidone terminated by two vicinal epoxy groups and containing at least two oxazolidone rings with at least 1 equivalent of a polyfunctional isocyanate compound, adding 0.01 to 10% by weight of a catalyst which forms isocyanurate rings and oxazolidone rings based on the total amount of the polyoxazolidone and the isocyanate compound, and then heating the resulting composition to polymerize the composition by forming isocyanurate rings and oxazolidone rings. The resin compositions have excellent mechanical properties, and particularly excellent flexibility, and excellent thermal resistance.

REFERENCES:
patent: 3020262 (1962-02-01), Speranza
patent: 3494888 (1970-02-01), McElroy
patent: 3694406 (1972-09-01), D'Alelio
patent: 3721650 (1973-03-01), D'Alelio
patent: 3793236 (1974-02-01), Ashida et al.
patent: 3817938 (1974-06-01), Ashida et al.
Herweh et al. Tetrahedron Letters No. 12, pp. 809-812 (1971).

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