Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1986-06-16
1989-04-04
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
526319, C08F 800
Patent
active
048187879
ABSTRACT:
The present invention provides a process for producing easily on an industrial scale a polyvinyl ester having a high degree of polymerization and PVA having a high degree of polymerization derived by saponification form such a polyvinyl ester. The process of this invention makes it possible to produce the desired product especially even when the polymerization is carried out until a high conversion to polymer is attained, as well as even when the polymerization is suspended while the conversion to polymer is still low.
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Okaya Takuji
Sato Toshiaki
Yamauchi Junnosuke
Kuraray Co. Ltd.
Reddick J. M.
Schofer Joseph L.
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