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:
Jan. 11, 1994
Filed:
Apr. 30, 1991
Takamitsu Ohtani, Kyoto, JP;
Kazuyuki Hagino, Kyoto, JP;
Hiromitsu Kinoshita, Mishima, JP;
Akira Taniuchi, Kyoto, JP;
Norimasa Uesugi, Kyoto, JP;
Dai-ichi Ceramo Co., Limited, Kanzaki, JP;
Dai-ichi Kogyo Seiyaku Co., Ltd., Kyoto, JP;
Abstract
An injection compacting composition having excellent injection compacting characteristics such as powder flowability and an excellent binder removability and being capable of providing compacts having a high strength and sintered compacts having no defects such as warpage and cracks in high yields, which comprises (1) an inorganic powder and (2) an organic binder comprising a composite acrylic polymer and a wax having a melting point of at most 100.degree. C. and being compatible with said composite acrylic polymer, said composite acrylic polymer being a suspension polymerization product prepared by dissolving (a) a polymer selected from the group consisting of an ethylene-vinyl acetate copolymer and an ethylene-ethyl acrylate copolymer in (b) an acrylic or methacrylic acid ester monomer or a mixture of an acrylic or methacrylic acid ester monomer and a styrene compound monomer, dispersing the resulting solution in an aqueous medium in the presence of a dispersing agent, and subjecting the resulting dispersion to a suspension polymerization.