Method of making molding compounds and materials made thereby

Details Method of making molding compounds and materials made thereby Method of making molding compounds and materials made thereby

1976-12-17

1978-08-08

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

156335, C08K 714

Patent

active

041056230

ABSTRACT:
A method of making molding compounds and particularly sheet molding compounds in which a novolak is dispersed throughout an inorganic filler and a slight reaction is caused to take insitu with a hydrogen donor that is preferably hexamethylenetetramine to produce a molding compound. In the case of a sheet molding compound, the material is spread out into a thin sheet and inorganic fibers are embedded therein, following which a body-building reaction is initiated to liberate some ammonia. Thereafter, the material is dried and solidified into a solid handleable sheet molding compound.
There is also disclosed a method for forming the novolak resin insitu by reaction of the monomers while dispersed throughout the inorganic fillers.

REFERENCES:
patent: 939966 (1909-11-01), Baekeland
patent: 2193941 (1940-03-01), Seeback
patent: 2457493 (1948-12-01), Redfern
patent: 3652352 (1972-03-01), Milsimer et al.
patent: 3734814 (1973-05-01), Davis et al.
patent: 3784433 (1974-01-01), Garnish et al.
patent: 3888716 (1975-06-01), Morse

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