Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-01-15
1977-02-08
Holler, Alan
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C08F2552, C08F2554, C08F2556, C08F25510
Patent
active
040072355
ABSTRACT:
Polymers of excellent impact strength, reduced particle size, and enhanced proportions of fines are obtained in the bulk polymerization of a vinyl halide or mixture thereof with comonomer(s) in the presence of high molecular weight polyolefins by removing from the polymerization mass during the thick paste state thereof sufficient vinyl halide to adjust the effective concentration of polyolefin to above about 5.3% based on vinyl halide. The resultant product which contains an enhanced proportion of fines and is devoid of massive agglomerates, requires less mechanical work in comminution or shorter heating in melting in subsequent conventional processing steps.
REFERENCES:
patent: 3692718 (1972-09-01), Golstein
Lenz, R. W., "Organic Chemistry of Synthetic High Polymers", Interscience (1967), pp. 360.
Billmeyer, Jr., F.W., "Textbook of Polymer Science", Wiley-Interscience, 2nd Ed., (1971), pp. 356-358 + 420.
Platzer, N.A.J., "Polymerization Kinetics and Technology", Advances in Chemistry Series 128, A.C.S., Wash., D.C. (1973), pp. 135-141.
Henson, J.H.L., "Developments in PVC Technology", J. Wiley and Sons (1973), pp. 21-26 and 38.
Casella Peter F.
Holler Alan
Hooker Chemicals & Plastics Corporation
Mudd James F.
Stein David A.
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