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Application of organosilane, polyolefin in-kettle alloy and preparation method thereof

A technology of organosilane and alloy in kettle, applied in the field of olefin polymerization

Active Publication Date: 2017-04-19
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, TPV products are mainly realized through the post-polymerization modification process (dynamic vulcanization and cross-linking), and the method for preparing TPV by polymerization in a kettle has not been reported.

Method used

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  • Application of organosilane, polyolefin in-kettle alloy and preparation method thereof
  • Application of organosilane, polyolefin in-kettle alloy and preparation method thereof

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preparation example Construction

[0024] The preparation method of the polyolefin still alloy provided by the present invention comprises making the first olefin monomer carry out the first polymerization reaction in the presence of a catalyst, and then passing the second olefin monomer into the polymerization reaction system to carry out the second polymerization reaction, so that The first olefin monomer is different from the second olefin monomer, wherein the first polymerization reaction and / or the second polymerization reaction is carried out in the presence of organosilane, the general formula of the organosilane is R 1 m SiX n (OR 2 ) k , where R 1 for C 2 -C 20 Hydrocarbyl and R 1 The end contains α-olefin double bond, norbornene group, cycloalkene group or dicyclopentadiene group, X is halogen, R 2 for C 1 -C 20 straight chain, branched or isomerized alkyl, m is an integer of 1-3, n is an integer of 1-3, k is an integer of 0-2, and m+n+k=4.

[0025] In addition, the specific selection of the...

Embodiment 1

[0038] This example is used to illustrate the preparation method of the polyolefin tank alloy provided by the present invention.

[0039] Under vacuum, 500 grams of liquid propylene monomer was added to the reactor, and then 0.25 mol of triethylaluminum and 20 mg of olefin polymerization catalyst (MgCl 2 / TiCl 4 / BMMF, where BMMF is the internal electron donor 9,9-dimethoxyfluorene, MgCl 2 、TiCl 4 The mass ratio with BMMF is 80:12:8) and 0.2g hydrogen, and then the reaction temperature is raised to 70°C for 0.2 hours. Then the residual propylene monomer in the reactor was evacuated and the temperature was lowered to 50° C., 0.10 mL of bis(7-octenyl) dichlorosilane was added, and then a mixed gas of 20 g of ethylene and 60 g of propylene was introduced into the reactor. , the reaction temperature was controlled at 90°C and the reaction was continued for 0.2 hours. After the reaction was completed, acidified ethanol was added to terminate the polymerization reaction, and then...

Embodiment 2

[0050] This example is used to illustrate the preparation method of the polyolefin tank alloy provided by the present invention.

[0051] Under vacuum, 500 grams of liquid propylene monomer was added to the reactor, and then 0.25 mol of triethylaluminum and 20 mg of olefin polymerization catalyst (MgCl 2 / TiCl 4 / BMMF, where BMMF is the internal electron donor 9,9-dimethoxyfluorene, MgCl 2 、TiCl 4 The mass ratio with BMMF is 80:15:5) and 0.2g hydrogen, and then the reaction temperature was raised to 70°C for 0.2 hours. Then the residual propylene monomer in the reactor was evacuated and the temperature was lowered to 50° C., and 0.05 mL of bis[2-(5-ethylidene-2-norbornenyl) ethyl] dichlorosilane was added, and then Pass the mixed gas of 20g ethylene and 60g propylene into the reaction kettle, control the reaction temperature at 90°C and continue the reaction for 0.5 hours. and ethanol at a temperature of 80°C for three times, and finally vacuum-dried at 60°C to obtain a po...

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Abstract

The invention provides an application of organosilane, a polyolefin in-kettle alloy and a preparation method thereof. The preparation method for the polyolefin in-kettle alloy comprises the following steps: enabling a first olefin monomer to carry out first polymerization reaction in the presence of a catalyst; introducing a second olefin monomer into a polymerization reaction system to carry out second polymerization reaction, wherein the first olefin monomer is different from the second olefin monomer; first polymerization reaction and / or second polymerization reaction is carried out in the presence of organosilane with a general formula of R1mSiXn(OR2)k; R1 is C2-C20 alkyl and a R1 terminal comprises alpha-olefin double bonds, a norborneol alkenyl group, a cycloolefin group or a dicyclopentadiene group; X is halogen; R2 is a C1-C20 linear chain, a branched chain or isomerized alkyl; m is an integer number from 1 to 3; n is an integer number from 1 to 3; k is an integer number from 0 to 2; and m+n+k is equal to 4. Cross-linking degree of a rubber phase in the polyolefin in-kettle alloy obtained from the preparation method is relatively high, and the polyolefin in-kettle alloy has relatively high toughness and relatively low tensile breaking strength.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular to an application of organosilane in preparing polyolefin tank alloys, a preparation method of polyolefin tank alloys and polyolefin tank alloys prepared by the method. Background technique [0002] Polyolefin blending technology refers to the technology of directly melt blending compatible homopolymer / homopolymer, homopolymer / copolymer, copolymer / copolymer to make polymer alloy. The polyolefin in-kettle alloy refers to the polyolefin alloy obtained directly from the reaction monomer through in-kettle polymerization, which replaces the traditional blending method of melt-blending the polymer components. The most common polyolefin tank alloy is polypropylene tank alloy, which is usually polymerized by propylene in the presence of an olefin polymerization catalyst to form porous polypropylene particles, and then ethylene and α-olefin copolymerization monomers are introduced into t...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08F210/16C08F210/06C08F4/649C08F4/646C08F110/06
CPCC08F110/06C08F210/06C08F210/16C08L23/12C08L2314/00C08L23/0815C08F210/02C08F4/6494C08F4/6465
Inventor 董金勇秦亚伟
Owner INST OF CHEM CHINESE ACAD OF SCI
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