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Preparation method of poly (1-butene) polymer, preparation method of poly (1-butene)-based membrane material master batch and poly (1-butene) membrane

A butene-based film and polymer technology, applied in the production of bulk chemicals, etc., can solve the problems affecting the mechanical properties and sealing properties of materials, the reduction of product performance, and the reduction of peel strength

Pending Publication Date: 2022-05-27
SHANDONG JINGBO PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Studies have shown that polyolefin alloying can effectively improve the phase interface and two-phase dispersion between different polyolefin products to a certain extent, thereby improving the performance of the product, but due to the introduction of the second monomer, it will lead to a certain or Problems with significant reduction in certain properties, such as the significant reduction in the peel strength of the poly-1-butene alloy film, which affects the use, and may also affect the mechanical properties and sealing properties of the material, etc.

Method used

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  • Preparation method of poly (1-butene) polymer, preparation method of poly (1-butene)-based membrane material master batch and poly (1-butene) membrane

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[0043] The invention provides a preparation method of poly-1-butene polymer, comprising the following steps:

[0044] a) Under the protective atmosphere, under the action of composite catalyst, alkyl aluminum compound and external electron donor, the monomer raw material and hydrogen undergo a polymerization reaction to obtain a prepolymerized 1-butene alloy phase;

[0045] Described monomer raw material is 1-butene and comonomer, or is comonomer;

[0046] The comonomer is propylene and / or ethylene;

[0047] The composite catalyst is a supported titanium-based composite catalyst;

[0048] b) polymerizing the pre-polymerized 1-butene alloy phase with 1-butene and hydrogen to obtain a poly-1-butene alloy;

[0049] The molar ratio of the total amount of 1-butene to the comonomer in step a) is (0.1-20):1;

[0050] The mass ratio of the 1-butene to the total amount of the 1-butene in the step a) is 0% to 30%;

[0051] In the step a), the mass ratio of the hydrogen to the monome...

Embodiment 1

[0091] Take 0.3 kg of purified liquid phase propylene monomer and 1.7 kg of purified liquid phase 1-butene monomer.

[0092] After the 10L polymerization kettle was replaced with nitrogen, vacuum treatment was carried out until the vacuum degree reached 0Pa, and triethylaluminum, external electron donor dicyclohexyldimethoxysilane, composite catalyst (MgCl) were successively put into the reaction kettle. 2 Load TiCl 4 and internal electron donor phthalate, the amount of titanium loaded is 2.6wt%, the mass fraction of internal electron donor is 7.5%) 0.20g, put into liquid phase propylene 0.3kg, liquid phase 1-butene 0.3kg, Introduce 2.0L of hydrogen (that is, 0.18g); wherein, Al in the triethylaluminum: Ti=60:1 (molar ratio) in the composite catalyst, external electron donor: Ti in the composite catalyst=15:1 ( The molar ratio of). Through the DCS control system, the polymerization was performed at a constant temperature of 35 °C for 50 min, followed by emptying and cooling....

Embodiment 2

[0095] Take 0.45kg of purified liquid phase propylene monomer and 1.55kg of purified liquid phase 1-butene monomer.

[0096] After the 10L polymerization kettle was replaced with nitrogen, vacuum treatment was carried out until the vacuum degree reached 0Pa, and triethylaluminum, external electron donor dicyclohexyldimethoxysilane, composite catalyst (MgCl) were successively put into the reaction kettle. 2 Load TiCl 4 and internal electron donor phthalate, the amount of titanium loaded is 2.6wt%, the mass fraction of internal electron donor is 7.5%) 0.20g, put into liquid phase propylene 0.45kg, liquid phase 1-butene 0.15kg, Introduce 2.0L of hydrogen (that is, 0.18g); wherein, Al in the triethylaluminum: Ti=60:1 (molar ratio) in the composite catalyst, external electron donor: Ti in the composite catalyst=15:1 ( The molar ratio of). Through the DCS control system, the polymerization was performed at a constant temperature of 35 °C for 50 min, followed by emptying and coolin...

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Abstract

The invention provides a preparation method of a poly (1-butene) polymer, a preparation method of a poly (1-butene)-based membrane material master batch and a poly (1-butene) membrane. The preparation method comprises the following steps: firstly, carrying out polymerization reaction on a part of 1-butene, a comonomer and hydrogen to form a pre-polymerized 1-butene alloy phase; taking the pre-polymerized 1-butene alloy phase as a reaction center, adding the rest 1-butene, introducing hydrogen, and carrying out polymerization reaction again, so as to obtain the polyolefin polymer. Polyolefin is prepared by adopting the two-stage polymerization method, the first-stage polymerization is used as activation and preliminary catalytic polymerization of a catalyst system, a catalytic active center is fully dispersed and loaded inside or on the surface of a polymer by controlling the form of the polymer, a foundation is laid for the second-stage polymerization, and then secondary feeding is performed for polymerization reaction. The preparation method provided by the invention can controllably reduce the peel strength of the poly-1-butene polymer on the premise of keeping good mechanical properties and sealing performance.

Description

technical field [0001] The invention relates to the field of organic materials, in particular to a preparation method of a poly-1-butene polymer, a preparation method of a poly-1-butene-based film material master batch and a poly-1-butene film. Background technique [0002] In order to make a stable and fairly elastic film, it is necessary to resolve the contradiction between two trends: on the one hand, in order to stabilize the orientation state, the mobility of the molecules must be reduced; on the other hand, to obtain a certain elasticity, the mobility of the molecules must be increased . Only crystalline polymers can satisfy both requirements. The stability of the orientation state of the crystalline polymer is maintained by the crystal state, so it must have a certain degree of crystallinity, but the crystallinity cannot be too high, so that the polymer has a certain elasticity, and achieves the unity of stable orientation and moderate elastic deformation. . PB (ie...

Claims

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Application Information

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IPC IPC(8): C08F210/08C08F210/06C08F2/00C08F4/649C08F4/646C08J3/22C08J5/18C08L23/20
CPCC08F210/08C08J3/226C08J5/18C08J2423/20C08J2323/20C08F210/06C08F2500/12C08F2/00C08F4/6494C08F4/6465Y02P20/52
Inventor 魏亭亭李海艳贾福祥赵丹丹丁其维石敏袁文博赵永臣王耀伟栾波
Owner SHANDONG JINGBO PETROCHEM
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