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:
Mar. 31, 1998
Filed:
Sep. 25, 1996
Hisaji Tanazawa, Higashiosaka-shi, Osaka, JP;
Takeshi Hirohata, Kawachinagano, JP;
Ryutaro Nishimura, Higashiosaka, JP;
Other;
Abstract
This invention relates to a granular phenolic resin forming material. Grains are obtained by pulverizing a hardened phenol resin or epoxy resin, particularly a waste, having aromatic rings. The grains are heated to react with a phenolic substance, to solubilize at least surfaces thereof, whereby the grains are made formable again. The pulverized, hardened grains and the phenolic substance, preferably a phenol, are mixed in the ratio of 100/10 to 100/90. An acid catalyst may be used, as necessary, in a quantity not exceeding 9 parts. A preferred reaction temperature is 80.degree. to 180.degree. C. at atmosphere pressure. The forming material of this invention may be formed with hexamine compounded therewith.