PROCESSO DE POLIMERIZACAO CARACTERIZADO POR UM REVESTIMENTO EM DUAS CAMADAS CONTRA A FORMACAO DE INCRUSTACOES DEPOSITADAS TILIZANDO UM TRANSPORTADOR POR VAPOR

PROCESSO DE POLIMERIZACAO CARACTERIZADO POR UM REVESTIMENTO EM DUAS CAMADAS CONTRA A FORMACAO DE INCRUSTACOES DEPOSITADAS TILIZANDO UM TRANSPORTADOR POR VAPOR

An improved process for producing a polymer by polymerizing a monomer having an ethylenic double bond in a polymerization vessel having a polymer scale preventive coating film on its inner wall surfaces, etc. is provided. The coating film is formed by coating a first coating liquid containing a comp...

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Hauptverfasser: MIKIO WATANABE, TOSHIHIDE SHIMIZU, GENJI NOGUKI
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Sprache:por
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator MIKIO WATANABE
TOSHIHIDE SHIMIZU
GENJI NOGUKI
description An improved process for producing a polymer by polymerizing a monomer having an ethylenic double bond in a polymerization vessel having a polymer scale preventive coating film on its inner wall surfaces, etc. is provided. The coating film is formed by coating a first coating liquid containing a compound selected from the group consisting of an aromatic compound having 5 or more conjugated pi bonds and a heterocyclic compound having 5 or more conjugated pi bonds, and then coating a second coating liquid on the first layer. The first and second coating liquids are applied by means of steam as a carrier. The second layer has a surface having a contact angle to water of less than 60 DEG after its surface has been brought into contact with a solution of mixture of water and a vinyl chloride monomer in a weight ratio of 1:1, at 50 DEG C for 1 hour. This process can shorten the time for forming the coating film to improve productivity, can improve the effect of preventing adhesion of polymer scale, can make colored particles less mix into polymer products obtained by this process, can lessen fish eyes and initial discoloring of formed products and can improve the quality of polymeric products and their formed or molded products.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title PROCESSO DE POLIMERIZACAO CARACTERIZADO POR UM REVESTIMENTO EM DUAS CAMADAS CONTRA A FORMACAO DE INCRUSTACOES DEPOSITADAS TILIZANDO UM TRANSPORTADOR POR VAPOR
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