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. 28, 2011
Filed:
Apr. 26, 2007
Seiji Tanimoto, Tokyo, JP;
Koichiro Isoue, Kurashiki, JP;
Makio Tokoh, Kurashiki, JP;
Tamotsu Miura, Yokohama, JP;
Seiji Tanimoto, Tokyo, JP;
Koichiro Isoue, Kurashiki, JP;
Makio Tokoh, Kurashiki, JP;
Tamotsu Miura, Yokohama, JP;
Kuraray Co., Ltd., Kurashiki-shi, JP;
Abstract
The present invention provides a polyvinyl acetal powder which is excellent in flowability during the coating process when it is applied to a powder coating material. This polyvinyl acetal powder enables to obtain a coating film having good impact resistance and uniformity of thickness (uniformity of coating film thickness). The present invention also provides a powder coating material using the polyvinyl acetal powder. Specifically, the present invention is a polyvinyl acetal powder having an average particle diameter of 10 to 150 μm, a maximum particle diameter of 250 μm or less, and a melt flow rate of 1 to 200 g/10 min. as measured in accordance with JIS K7210: 1999. The present invention also is a powder coating material containing this polyvinyl acetal powder.