Process for the preparation of acetal polymer or copolymer

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United States of America Patent

PATENT NO 4931535
SERIAL NO

07346560

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Abstract

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Acetal polymer and copolymer are prepared by polymerizing formaldehyde or its cyclic oligomer as a principal monomer, or copolymerizing the principal monomer with a comonomer copolymerizable therewith, using an isopoly acid or an acid salt thereof as a polymerization catalyst.

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Patent Owner(s)

Patent OwnerAddress
POLYPLASTICS CO LTDTOKYO 108-8280

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kitano, Toshiaki Shizuoka, JP 18 169
Sano, Hiroyuki Shizuoka, JP 57 280
Yamamoto, Kaoru Shizuoka, JP 239 5624

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