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:
Jul. 01, 2003
Filed:
May. 04, 2001
Applicant:
Inventors:
Toshikatsu Shoko, Yokohama, JP;
Yasuo Togami, Kisarazu, JP;
Assignee:
Nippon Petrochemicals Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M 5/135 ;
U.S. Cl.
CPC ...
B41M 5/135 ;
Abstract
A hydrocarbon solvent comprising a fraction which is obtained by reacting styrene and cumene in the presence of an acid catalyst and contains 85% by weight or more of 1-phenyl-1-(p-isopropylphenyl)ethane and 5% by weight or less of total styrene dimers, and a pressure-sensitive copying material made using said solvent. The hydrocarbon solvent is inexpensive and excellent in dissolving power for dyes, color-developing rate and so forth, and is satisfactorily odorless.