Process for producing thermosetting resins

Details Process for producing thermosetting resins Process for producing thermosetting resins

1988-06-13

1989-09-12

Welsh, Maurice J.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

2643282, 2643286, 428224, 428228, 428290, 528 44, 528 51, 528 52, 528 53, 528 57, C08G 1800

Patent

active

048657956

ABSTRACT:
In a process for producing thermosetting resins by the polymerization reaction of a cyclic carbonate with a polyvalent isocyanate compound, potassium fluoride is used as the catalyst. If desired, a co-catalyst selected from the group consisting of polyethylene oxides, cryptands and quaternary onium salts is additionally used. The thermosetting resins so produced have excellent impact stength and, therefore, are useful as molded materials and various substrates.

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patent: 4575518 (1986-03-01), Rasshofer et al.
patent: 4736008 (1988-04-01), Kouno et al.
Tsuzaki et al., J. Org. Chem. 25, (1/1960), 1009-1012.
Chemical Abstracts, 100 105388u (7-80).

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