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:
Sep. 07, 1993
Filed:
May. 20, 1992
Hiroyuki Negishi, Hiratsuka, JP;
Shinji Shirai, Hiratsuka, JP;
Kansai Paint Co., Ltd., Amagasaki, JP;
Abstract
Disclosed are a matte fluorine based aqueous dispersion containing, as the resin component, a reaction product of a fluorine based polycarboxylic acid resin with an epoxysilane compound; a process for preparing the fluorine based aqueous dispersion, which process comprises dissolving or dispersing the fluorine based polycarboxylic acid resin and an alicyclic epoxysilane compound in an organic solvent to form an organic solution or organic dispersion, followed by heating and reacting until an acid value of the fluorine based polycarboxylic acid resin is reduced by one or more, incorporating a neutralizing agent and by dispersing in water, or which process comprises dissolving or dispersing the fluorine based polycarboxylic acid resin in an organic solvent to form an organic solution or organic dispersion, followed by adding an aliphatic epoxysilane compound after or before neutralization, dispersing in water, provided after neutralization when the aliphatic epoxysilane compound is added before neutralization, to form an aqueous dispersed system, and heating and reacting the aqueous dispersed system until the acid value of the fluorine based polycarboxylic acid resin is reduced by one or more; and a fluorine based matte anionic electrodeposition coating composition containing the fluorine based aqueous dispersion.