Patent ID: 6037426
Filing Date: 2000-03-14
Classification: C08F,Y10T

Abstract:
A process for producing a polymer by polymerizing in a polymerization vessel a monomer having an ethylenic double bond, wherein;said polymerization vessel has a polymer scale preventive coating film on its inner wall surfaces and other surfaces with which the monomer comes into contact during polymerization;said coating film comprising a first layer formed on said inner wall surfaces and other surfaces and a second layer formed on the first layer;said first layer being formed by coating a first coating liquid containing a conjugated .pi. bond-containing 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 by means of steam as a carrier, and said second layer being formed by coating a second coating liquid on the first layer by means of steam as a carrier; andsaid second layer having a surface having a contact angle to water of less than 60.degree. 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.degree. C. for 1 hour.