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. 01, 2008
Filed:
Feb. 13, 2003
Colin Dick Robertson, Grangemouth, GB;
Jill Louise Johnson, Grangemouth, GB;
Prakash Patel, Manchester, GB;
Colin Dick Robertson, Grangemouth, GB;
Jill Louise Johnson, Grangemouth, GB;
Prakash Patel, Manchester, GB;
Fujifilm Imaging Colorants Limited, Manchester, GB;
Abstract
A process for preparing a mixture of copper phthalocyanine dyes of Formula (1): CuPc(SOM)(SONH), wherein: CuPc is copper phthalocyanine; M is a cation; x and y each independently have a value of from 0.5 to 3.5; and (x+y)=2 to 5; which process includes: chlorosulphonating a copper phthalocyanine compound using a chlorosulphonating agent; and condensing the product of step (i) with ammonia to give a mixture of copper phthalocyanine dyes of Formula (1); optionally exchanging the cation M in the mixture of copper phthalocyanine dyes of Formula (1) resulting from step (ii) for an alternative cation M; wherein the chlorosulphonating agent includes a mixture of chlorosulphonic acid and a chlorinating agent selected from phosphorous oxychloride and phosphorous trichloride. Also the dyes obtainable from this process; compositions and inks including these dyes; materials printed with these dyes, compositions or inks; ink-jet printer cartridges containing inks made from the dyes; and ink-jet printers including these cartridges.