(POLY) PIPERAZINE PYROPHOSPHATE POWDER AND MANUFACTURING METHOD THEREFOR

World Intellectual Property Organization Patent

APP PUB NO WO-2011021498-A1
SERIAL NO

PCTJP2010063072

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Abstract

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Provided is a (poly) piperazine pyrophosphate powder that is not accompanied by difficult-to-remove byproducts and does not have a color that would have a negative impact on the coloration of molded products. Also provided is a method for manufacturing said (poly) piperazine pyrophosphate powder efficiently and with high yield. Said method includes a step that produces (poly) piperazine pyrophosphate by dehydrating and condensing piperazine 2-phosphate. Performing said step in an inert gas atmosphere allows the manufacture of a (poly) piperazine pyrophosphate powder having a whiteness (W) between 80 and 100 and a yellow index (YI) between 0 and 5.

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Patent Owner(s)

Patent OwnerAddress
SAKAI CHEMICAL INDUSTRY COJPNO 5-1 EBISUJIMA-CHO SAKAI-SHI OSAKA-FU

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Inventor(s)

Inventor Name Address
TSUJIMOTO HIDEO SAKAI-SHI OSAKA 590-0985
MURAKAMI YASUYUKI KYOTO
OKITA HIROMASA SAKAI

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