The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 1978
Filed:
Dec. 17, 1976
Richard F Shannon, Lancaster, OH (US);
Douglas L Denton, Newark, OH (US);
Owens-Corning Fiberglas Corporation, Toledo, OH (US);
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.