Method for producing graft-copolymers of vinyl chloride and polyfluorine resin by copolymerization
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United States of America Patent
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Mar 4, 1986
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N/A
app pub date -
Jun 15, 1984
filing date -
Jun 15, 1984
priority date (Note) -
Expired
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Abstract
This invention relates to a method for graft-copolymerizing vinyl chloride monomer to a polyfluorine resin to produce resins of improved physical properties and processability parameters. The vinyl chloride monomer and polyfluorine resin are first treated in a highly alkaline medium and at a high temperature, and the mixture is stirred. Suspension agent(s), water and an initiator are added to the mixture after the temperature thereof has been lowered. The resultant mixture which has been stirred and homogenized is heated to a temperature at which polymerization is completed. Thereafter the mixture is neutralized, washed, and dried. A product having improved impact strength and resistance to heat and abrasion results.
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