C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/326, 402/596
C08F 8/20 (2006.01) C08F 8/38 (2006.01) C08F 110/02 (2006.01)
Patent
CA 1105195
ABSTRACT OF THE DISCLOSURE A process for chlorinating or chlorosulfon- ating polyethylene comprising dissolving polyethylene in a solvent that is a mixture of methylene chloride and trichlorofluoromethane in a weight ratio of 0.3-1.6, reacting the resultant solution with sul- furyl chloride under pressure to maintain reactants, the resulting chlorinated or chlorosulfonated poly- ethylene and product gases in a single liquid phase, reducing the pressure on or increasing the tempera- ture of the single liquid phase of chlorinated or chlorosulfonated polyethylene and solvent to form two liquid phases, one a polymer-rich phase and the other a solvent-rich phase, and separating the phases.
304922
E.i. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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