Granule coated with urethane resin

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United States of America Patent

PATENT NO 9163110
APP PUB NO 20100196431A1
SERIAL NO

12671127

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Abstract

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A coated granule is obtained by coating a bioactive substance-containing granule with a urethane resin obtained by reaction of an aromatic diisocyanate with a polyol mixture containing a polyesterpolyol and a C2-C8 polymethylene glycol, wherein the molar ratio of the polyesterpolyol to the polymethylene glycol is 1:20 to 20:1. The granule is capable of controlling elution of the bioactive substance appropriately, and the urethane resin forming the coating film shows degradability in soil.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO CHEMICAL COMPANY LIMITEDTOKYO 104-8260

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Otsubo, Toshiro Sanda, JP 10 22
Takebayashi, Yoshihiro Toyonaka, JP 9 98
Watanabe, Atsushi Tokyo, JP 470 7124

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