Leonard Feiler - Spring Valley NY Sheldon F. Gelman - Danbury CT
Assignee:
Stauffer Chemical Company - Westport CT
International Classification:
C08F 111 C08F 180 C08F 330
US Classification:
526 73
Abstract:
Vinyl halide homopolymers, particularly polyvinyl chloride, which exhibit improved processing characteristics without sacrificing physical properties are prepared by partially polymerizing a vinyl halide monomer at an initial temperature level whereupon the reaction temperature is then raised and the polymerization is continued at this increased temperature level preferably while in the presence of a chain transfer agent so as to obtain a polymer having an average molecular weight range different from that obtainable at the first reaction temperature. The resulting polyvinyl chloride provides the physical characteristics of polymer blends but can be processed much more readily than a mechanical blend of homopolymers of varying molecular weights, fusing more easily and without the undesirable formation of fish eyes.
Method For Preparing Vinyl Halide Polymers Having Improved Processing Characteristics And Polymers Prepared Thereby
Leonard Feiler - Riverdale NY Sheldon F. Gelman - Danbury CT
Assignee:
Stauffer Chemical Company - Westport CT
International Classification:
C08F 330 C08F 320 C08F 1506 C08F 1532
US Classification:
260 928W
Abstract:
Vinyl halide polymers, preferably polyvinyl chloride, which exhibit improved processing characteristics without sacrificing physical properties are prepared by partially polymerizing vinyl halide monomer at a first reaction temperature and then changing the reaction temperature and continuing the polymerization at a second temperature conducive to forming a polymer of an average molecular weight range different from that obtainable at the first reaction temperature. The product provides the physical characteristics of polymer blends but can be processed without formation of fish eyes.
Name / Title
Company / Classification
Phones & Addresses
Leonard B Feiler Vice President
FEDERAL EXPRESS CORPORATION
3610 Hacks Cross Rd, Memphis, TN 38125
Leonard B. Feiler
FEDERAL EXPRESS CORPORATION
3610 Hacks Cross Rd, Memphis, TN 38125 942 S Shady Grv Rd C/O Robert T Molinet, Memphis, TN 38120
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