Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1976-05-07
1980-11-18
Levin, Stanford M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526129, 526130, 526134, 526154, 526156, 526161, 526172, 5263482, 526352, C08F 422, C08F 478
Patent
active
042347092
ABSTRACT:
Supported catalyst compositions incorporating preformed materials comprising the reaction product of organophosphorus compounds such as the organophosphates and organophosphites with chromium trioxide, wherein the organic moiety is a hydrocarbon radical, e.g., alkyl, aralkyl, aryl, cycloalkyl, or the like or combinations thereof. Typical supports constitute an inorganic material of high surface area, especially a high pore volume (>1.96 cc/g) silica xerogel. Catalytically promoted polymerizations of 1-olefins proceed efficiently to products of specially adapted utility for molding, and particularly the production of blow molded articles. The polymerization activity of the catalyst compositions is promoted by heating in a dry, oxygen containing atmosphere. The catalysts are utilized alone or in conjunction with other catalytic ingredients such as organometallic and/or organo non-metallic reducing agents.
REFERENCES:
patent: 3474080 (1969-10-01), Rekers
patent: 3704287 (1972-11-01), Johnson
patent: 3984351 (1976-10-01), Rekers et al.
patent: 3985676 (1976-10-01), Rekers et al.
Katzen Stanley J.
Rekers Louis J.
Levin Stanford M.
National Petro Chemicals Corporation
Tremain Kenneth D.
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