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. 12, 1994
Filed:
Mar. 02, 1993
Applicant:
Inventors:
Keizo Ishii, Ashiya, JP;
Hidetsumu Okada, Takahama, JP;
Masanori Oiwa, Toyonaka, JP;
Hisaichi Muramoto, Hirakata, JP;
Shinichi Ishikura, Tanabe, JP;
Assignee:
Nippon Paint Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C09D / ;
U.S. Cl.
CPC ...
524458 ; 524460 ; 523160 ; 523161 ; 523205 ; 523211 ;
Abstract
Polymer microparticles having immobilized therein a water-insoluble substance such as oil-soluble dyes or pigments are produced by a method which includes the steps of forming droplets of a solution of a self-emulsifiable resin in a nonaqueous solvent containing the water-insoluble substance and an ethylenically unsaturated monomer suspended in an aqueous medium, and then allowing the monomer in the droplets to polymerize in situ.