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:
Jun. 13, 2006
Filed:
Jan. 28, 2004
Takeshi Koyama, Kanagawa, JP;
Takeshi Nomura, Kanagawa, JP;
Takeshi Koyama, Kanagawa, JP;
Takeshi Nomura, Kanagawa, JP;
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Abstract
A polyisocyanate compound obtained by highly converting a bis(isocyanatomethyl)cyclohexane into a uretidione compound, a process for producing the compound, a polyisocyanate polyaddition composition obtained by polyaddition of the compound, a compound having at least two hydroxyl groups and a compound having one hydroxyl group, and a powder coating material using the composition as the curing agent. The powder coating material is advantageous for safety and health due to the absence of dissociation of blocking agents and for economy due to a content of latent NCO greater than conventional uretidione-based powder coating materials. When a curing agent obtained from the polyisocyanate compound is used in combination with a polyester polyol having 30% or greater of hydroxyl group bonded to secondary carbon atom in the entire hydroxyl group, the curing temperature is lowered and the coating film exhibits excellent gloss like solvent-based coating materials, smoothness of the surface, weatherability and mechanical properties.