Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-12-05
1976-01-13
Schofer, Joseph L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 821, 260 855R, 260 855XA, 260 863, 260 875, 260 923, C08G 200, C08F21400, C08F13616, C08F22042
Patent
active
039323552
ABSTRACT:
Addition of a polyether in which one radical is a 2-hydroxyethyl- or 2-hydroxypropyl-terminated chain of two or more oxyethylene or 2-oxypropylene units and the other radical is either a defined hydrocarbon group or the 2-hydroxyethyl group to an aqueous alkaline emulsion in which chloroprene or a mixture of chloroprene with another monomer is undergoing polymerization in the presence of an alkyl mercaptan makes it possible to carry out the polymerization to a high degree of conversion, while at the same time avoiding excessive gel formation. This invention makes possible a significant increase in polymer yield without sacrifice of polymer quality or performance.
REFERENCES:
patent: 2674619 (1954-04-01), Lundsted
patent: 3226375 (1965-12-01), Greth et al.
patent: 3838141 (1974-09-01), Turner
Barney Arthur Livingston
Khan Ausat Ali
E. I. Du Pont de Nemours and Company
Lilling Herbert J.
Schofer Joseph L.
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