Catalytic component for addition polymerization, process for producing addition polymerization and process for producing addition polymer

A catalyst and addition polymer technology, applied in the field of catalyst components, can solve the problems of lack of good fluidity, unsatisfactory melt flow rate, unsatisfactory melt tension, etc.

Inactive Publication Date: 2003-04-09
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the addition polymer obtained by polymerization using these catalysts has the following problems: (1) its melt tension is not satisfactorily high so that rapid and stable molding of tubular films is not possible, and (2) it The melt flow rate is not satisfactorily high so that it does not have good fluidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0326] (1) Production of solid products

[0327] In a 5 L four-necked flask purged with nitrogen, 2 L of tetrahydrofuran and 1.35 L (2.7 mol) of diethylzinc in hexane (concentration = 2M) were introduced, and the mixture was cooled to -50°C. A solution obtained by dissolving 251.5 g (1.37 mol) of pentafluorophenol in 390 ml of tetrahydrofuran was added dropwise over 25 minutes. After the dropwise addition was complete, the temperature was gradually raised to ambient temperature and stirring was continued for another 3 hours. Thereafter, the temperature was raised to 45°C and stirring was continued for another 1 hour. Continuously, the temperature was lowered to 20° C. using an ice bath, and 37.72 g (2.09 mol) of ion-exchanged water was added dropwise over 1.4 hours. Thus, the reaction mixture was separated into a yellow transparent liquid product and a yellow gel-like product. After the dropwise addition was complete, the reaction mixture was stirred for 2 hours, then heate...

Embodiment 2

[0335] (1) Polymerization

[0336] A procedure similar to that of Example 1(3) was carried out except that the partial pressure of hydrogen was changed to 0.002 MPa. As a result, the gas composition in the system was measured to have 0.08 mol% hydrogen and 3.97 mol% 1-butene.

[0337] In addition, a procedure similar to that of Example 1 (3) was carried out, except that racemic dichloroethylenebis(1-indenyl)hafnium in toluene (concentration=1 μmol / ml), dichloroethylenebis(1-indenyl)hafnium The toluene solution of bis(n-butylcyclopentadienyl)zirconium (concentration = 2 μmol / ml) and the amounts of particles (D) were changed to 0.10 ml, 0.40 ml and 13.2 mg, respectively.

[0338] As a result, 33 g of an olefin polymer having good particle properties was obtained. Polymerization activity / total transition metal atoms was measured to be 3.7×10 7 g / mol-transition metal atoms / hour, and polymerization activity / solid catalyst component were measured as 2500 g / g-solid catalyst compon...

Embodiment 3

[0348] (1) Polymerization

[0349] A procedure similar to that of Example 1(3) was carried out. As a result, the gas composition in the system was measured to have 0.05 mol% of hydrogen and 3.14 mol% of 1-butene.

[0350] To this system was added 0.9 ml of a heptane solution of triisobutylaluminum (concentration=1 mmol / ml). Next, 7.9 ml of a toluene solution containing three transition metal compounds was added (concentration of racemic dichloroethylenebis(1-indenyl) hafnium=0.84 μmol / ml, racemic dichloroethylenebis(1-indenyl)hafnium The concentration of bis(1-indenyl)zirconium = 0.06 μmol / ml, and the concentration of dichlorobis(n-butylcyclopentadienyl)zirconium = 0.25 μmol / ml). Successively, 9.4 mg of the particles (D) obtained in the above-mentioned Example 1(2) were added thereto as a solid catalyst component. Polymerization was carried out at 70°C for 60 minutes while feeding an ethylene-hydrogen mixed gas containing 0.10 mol% of hydrogen so that the total pressure was...

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Abstract

There are provided: (I) a catalyst component for addition polymerization comprising: (i) a transition metal compound having (a) two cyclopentadiene type anion skeleton-carrying groups, which are linked with each other directly or through a bridging group, and (b) a hafnium atom as its central metal, and (ii) a transition metal compound having (a) two substituted cyclopentadiene type anion skeleton-carrying groups, which are not linked with each other, and (b) a zirconium atom or a titanium atom as its central atom; and (II) a process for producing a catalyst for addition polymerization, which comprises the step of contacting the above catalyst component with a co-catalyst component for activation.

Description

technical field [0001] The present invention relates to a catalyst component for polyaddition comprising a metallocene transition metal compound; a method for producing a catalyst for polyaddition; and a method for producing an polyaddition. Background technique [0002] In recent years, there has been proposed a method for producing addition polymers, which includes the step of polymerizing monomers for addition polymerization such as olefins using a catalyst that is a transition metal compound such as a metallocene complex and a non-metallocene compound with a compound Combinations of aluminoxanes. Such catalysts are called single-site catalysts. [0003] Their examples are catalysts belonging to the combination of dichlorobis(cyclopentadienyl)zirconium and methylaluminoxane (JP-A58-19309); and dimethylbis(cyclopentadienyl) ) Catalysts of combinations of zirconium and boron compounds such as tri(n-butyl)ammonium tetrakis(pentafluorophenyl)borate (JP-W1-502036). [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/64C08F4/642C08F4/659C08F4/6592C08F210/16
CPCY10S526/943C08F4/65927C08F4/65912C08F210/16C08F4/65916C08F4/65925C08F4/65904C08F210/14C08F2500/10C08F2500/12C08F2500/11C08F2500/03C08F2500/17C08F2500/19C08F4/64
Inventor 大嶋秀树高冲和夫
Owner SUMITOMO CHEM CO LTD
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