C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/104, 402/113
C08G 2/28 (2006.01) C08G 2/36 (2006.01)
Patent
CA 1228191
Abstract of the Disclosure When a crude polyacetal polymer obtained by polymerization or copolymerization and having as a principal component thereof connected oxymethylene radicals in a main chain is treated in a non-soluble liquid medium at temperatures higher than 80°C but lower than the melting point of the polymer and at heterogeneous equilibrium, contact treatment is carried out by moving the crude polymer and the non-soluble medium in opposite directions relative to each other.
462837
Gotoh Noboru
Higashiyama Seiichi
Hotta Hiroshi
Komazawa Hiroyasu
Nakashima Tuneyasu
Polyplastics Co. Ltd.
Smart & Biggar
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