Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1982-05-03
1983-09-20
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252429R, 252430, 252431R, 252431C, 252441, 252443, 252439, 526100, 526106, 526130, B01J 3102, B01J 3112, B01J 2706, B01J 2720
Patent
active
RE0313904
ABSTRACT:
A silica-containing composition suitable for supporting chromium to produce a catalyst capable of giving high melt flow olefin polymers for such applications as injection molding and the like requiring a narrow molecular weight distribution, is produced by treating a silica-containing material at an elevated temperature with either (1) CO, (2) a bromine or iodine component, or (3) an oxygen-containing sulfur component, more specifically a carbon, oxygen and sulfur-containing component. Thereafter, anhydrous chromium can be added, for instance, by means of a hydrocarbon solution of a soluble chromium compound, and the resulting composition activated in air to produce a catalyst. The bromine or iodine treated silica contains bound bromine or iodine if the treating agent is HBr, HI, an organic halide of Br or I or elemental Br or I used in conjunction with a reducing agent. This material is a novel composition of matter and is suitable for use as a reinforcing agent in rubber or plastics and as a support for a chromatographic column in addition to being suitable for supporting a chromium compound to produce a catalyst.
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McDaniel Max P.
Welch Melvin B.
Gantz Delbert E.
Phillips Petroleum Company
Wright William G.
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