Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2011-06-28
2011-06-28
Wu, David (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S080000, C524S086000, C524S088000, C524S102000, C524S413000, C524S430000, C524S441000, C524S449000, C524S495000, C524S496000, C524S500000, C524S503000, C525S056000, C525S058000, C525S061000
Reexamination Certificate
active
07968639
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.
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Isoue Koichiro
Miura Tamotsu
Tanimoto Seiji
Tokoh Makio
Kuraray Co. Ltd.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Reddick Marie
Wu David
LandOfFree
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