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:
Apr. 03, 1990
Filed:
Oct. 13, 1988
Applicant:
Inventors:
Masato Satomura, Shizuoka, JP;
Ken Iwakura, Shizuoka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556132 ;
Abstract
A process for preparing a zinc salt of a salicylic acid compound which comprises reacting a salicylic acid compound and/or an alkali metal salt thereof with a zinc compound, wherein the reaction is carried out in a mixture of water and an organic solvent, and wherein the organic solvent has a water solubility of not more than 0.1 g/100 g water at 25.degree. C. and in which the zinc salt has a solubility of not less than 10 g/100 g organic solvent at 25.degree. C. The process achieves improved workability in collection of the product and improved yield and purity of the product.