Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1982-08-05
1984-05-29
Henderson, C. A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
526200, 526201, C08F 220
Patent
active
044516258
ABSTRACT:
This invention relates to a method for reducing the amount of wall fouling in the suspension polymerization of vinyl chloride. The surfaces of the polymerization reactor are wetted with a solution containing from 5 to 50 wt % alkali metal hydroxide, 0.01 to 1 wt % free radical inhibitor and 0.01 to 1 wt % surface active agent prior to charging the vinyl chloride polymerization recipe to the reactor. Preferably, the surface of the wetted reactor is heated to a temperature from 40.degree. to 100.degree. C. for at least 5 minutes prior to charging the polymerization recipe.
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Cheng John T. C.
Langsam Michael
Air Products and Chemicals Inc.
Henderson C. A.
Innis E. Eugene
Leach Michael
Simmons James C.
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