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:
Feb. 06, 1996
Filed:
Mar. 17, 1994
Applicant:
Inventors:
Eiichi Sugawara, Kawaguchi, JP;
Setsuo Hirose, Yoshikawa, JP;
Yoshinori Konno, Urawa, JP;
Masatoshi Nakajima, Kawaguchi, JP;
Toshiaki Higuchi, Kasukabe, JP;
Assignees:
Dainichiseika Color & Chemicals Mfg. Co., Ltd., Tokyo, JP;
Ukima Coulor & Chemicals Mfg. Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
524590 ; 524495 ; 524496 ; 524507 ; 524568 ; 427130 ; 427131 ; 428422 ; 428694 ; 428900 ;
Abstract
Described is a coating composition for the formation of a back coat layer in a magnetic recording medium, which comprises carbon black, a binder and a solvent. The binder is composed of an acrylic-polymer-modified polyurethane resin and a vinyl chloride copolymer having at least one type of terminal groups selected from hydroxyl groups, carboxyl groups or tertiary amino groups.