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. 05, 1993
Filed:
Oct. 16, 1990
Applicant:
Inventors:
Katsunori Takayama, Shizuoka, JP;
Toshihiko Endo, Shizuoka, JP;
Osamu Kanoto, Shizuoka, JP;
Nobuyuki Matsunaga, Shizuoka, JP;
Assignee:
Polyplastics Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08M / ;
U.S. Cl.
CPC ...
523210 ; 523212 ; 523213 ; 524263 ; 524267 ; 524493 ; 524500 ;
Abstract
Self-lubricating polyacetal resin compositions and molded articles (e.g. 'wear parts') formed thereof include a polyacetal base resin, and a self-lubricating effective amount of a silica powder in which a silicone polymer (e.g. silicone oil) is absorbed. The silica powder acts as a carrier for the silicone polymer so as to improve the dispersibility of the silicone polymer in the polyacetal base resin as well as to allow greater silicone polymer 'loading' of the polyacetal base resin. As a result, improved lubricant dispersibility and sliding characteristics are achieved.