Compositions that can produce polymers

a technology of polymer and composition, applied in the field of compositions, can solve the problems of large amounts of expensive methyl aluminoxane, low productivity, and inability to be commercialized, and achieve the effect of reducing the cost of methyl aluminoxan

Inactive Publication Date: 2005-06-16
PHILLIPS PETROLEUM CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metallocene catalysts have been known since about 1960, however, their low productivity did not allow them to be commercialized.
However, it was soon realized that large amounts of expensive methyl aluminoxane were needed to form an active metallocene catalyst.
This has been a significant impediment to the commercialization of metallocene catalysts.
However, this is not satisfactory, since borate compounds are very sensitive to poisons and decomposition, and can also be very expensive.
Furthermore, heterogeneous catalysts can lead to the formation of substantially uniform polymer particles that have a high bulk density.
Efforts have been made to produce heterogeneous metallocene catalysts, however, these catalysts have not been entirely satisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0079] These examples provide additional information to a person skilled in the art. These examples are not meant to be construed as limiting the scope of the claims.

DESCRIPTION OF THE POLYMERIZATIONS RUNS

[0080] All polymerization runs were conducted in a steel reactor that had a volume of 2.2 liters. This reactor was equipped with a marine stirrer. During the polymerizations this stirrer was set to run at 400 rpm. This reactor was also surrounded by a steel jacket that was connected to a steel condenser. The steel jacket contained methanol that was boiling. The boiling point of the methanol was controlled by varying the nitrogen pressure that was applied to the steel condenser and the steel jacket. This control method permitted precise temperature control (±0.5° C.).

[0081] First, a solid oxide compound (either a solid unmixed oxide or a solid mixed oxide) was charged, under nitrogen, to the reactor, which was dry. Second, organometal compound solution was added to the reactor by...

example 18

[0106] Alumina was impregnated with boria in this example. Boric acid (7.33 grams) was dissolved in 43 milliliters of methanol. This solution was then added to 21.8 grams of Ketjen grade B alumina. The mixture was shaken until a uniform state of wetness was achieved. Then the material was dried in a vacuum oven overnight at 90° C. and pushed through a 35 mesh screen. After being calcined in air at 600° C. the compound was found to have a pore volume of 1.02 cc / g and a surface area of 319 square meters per gram.

example 19

[0107] Alumnio-phosphate with a P / Al of 0.4 was also tested after calcination at 750° C.

TABLE IEx. #A1° C.2S3OAC4P5T6A7 18NoneNA0.00002TEA061.10 2NoneNA0.00002EADC028.00 3Silica6000.56862TEA0.6563.01 4Alumina8000.69481TEA2.730.78 5Alumina6000.23612TEA6.960.929 6Alumina4000.84751TEAtrace57.20 7Alumino-6000.82421TEA4566.050Phosphate 8Silica-6000.39121TEA8.340.032Alumina 9Silica-6000.13922TEA060.00Titania10Zr-Al-B6000.9462none0.446.4011Zr-Al-B6001.08052TEA310.060.528512Zr-Al-B6000.30802TEA76.460.024813Zr-Al-B600.87422TEA262.760.030114Zr-Al6001.56942TEA12.125.01915B-Al6001.14082TEA10.622.02516Zr-Al7000.90662TEA9.025.52617Zr-Al7000.17322TEA9.021.214718B-Al6000.85272TEA11.822.53719Alumino-7500.12672TEA33.160.2260Phosphate

Table-I Notes

1This is the solid unmixed oxide compound used, or the solid mixed oxide compound used.

2This is the calcining temperature.

3This is the amount of solid oxide compound, in grams, being contacted with the other compounds.

4This is the amount, in milliliters...

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PUM

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Abstract

This invention provides compositions that are useful for polymerizing at least one monomer into at least one polymer.

Description

FIELD OF THE INVENTION [0001] This invention is related to the field of compositions that can be used to polymerize monomers into at least one polymer. BACKGROUND OF THE INVENTION [0002] The production of polymers is a multi-billion dollar business. This business produces billions of pounds of polymers each year. Millions of dollars have been spent on developing technologies that can add value to this business. [0003] One of these technologies is called metallocene catalyst technology. Metallocene catalysts have been known since about 1960, however, their low productivity did not allow them to be commercialized. About. 1975, it was discovered that contacting one part water with two parts trimethylaluminum to form methyl aluminoxane, and then contacting such methyl aluminoxane with a metallocene compound, formed a metallocene catalyst that had greater activity. However, it was soon realized that large amounts of expensive methyl aluminoxane were needed to form an active metallocene c...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08F4/02C08F4/642C08F4/646C08F4/659C08F4/6592C08F10/02C08F110/02
CPCC08F4/65912C08F4/65925C08F10/02C08F110/02Y10S526/943C08F4/65916C08F4/025
Inventor MCDANIEL, MAX P.MARTIN, SHIRLEY J.COLLINS, KATHY S.JOHNSON, MARVIN M.
Owner PHILLIPS PETROLEUM CO
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