A kind of preparation method of polybutene alloy material

A technology of polybutene alloy and butene, applied in the production of bulk chemicals, etc., to achieve the effect of improving equipment utilization and increasing production capacity

Active Publication Date: 2017-06-20
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no mention of the continuous bulk polymerization method for polybutene alloys. Therefore, how to develop a new preparation method for polybutene alloy materials is a technical problem to be solved by the present invention

Method used

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  • A kind of preparation method of polybutene alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The first olefin tank of the present invention is opened to obtain the alloy product in the polypropylene kettle. In the reactor; the reactor for preparing polybutene alloy material by continuous process is a pilot plant with a production capacity of 25kg / h, consisting of three reactors in series, the first two are with mechanical stirring device and temperature control clamp Set of stainless steel pressure-resistant reactors, the latter is a gas-phase fluidized bed reactor. Co-catalyst triethylaluminum (5% by mass in hexane solution), external electron donor diisopropyldimethoxysilane (3% by mass in hexane solution), Ti-containing main catalyst (5% by mass) % Liquid paraffin mixture), liquid propylene, and hydrogen continuously enter the first reactor at a fixed rate to perform liquid phase bulk polymerization of propylene. At the same time, the materials in the first reactor flow out into the second reactor at a certain rate to continue the bulk polymerization of prop...

Embodiment 2

[0062] Using the same continuous polymerization reaction device and operating process as in Example 1, the co-catalyst was changed to triisobutyl aluminum (5% by mass in hexane solution), and the external electron donor was changed to methylcyclohexyldimethoxysilane (3% by mass in hexane solution), Ti-containing main catalyst (5% by mass of liquid paraffin mixture), liquid propylene, and hydrogen enter the first reactor continuously at a fixed rate for liquid phase bulk polymerization of propylene.

[0063] The molar ratio of Al element of triisobutyl aluminum to Ti element in the main catalyst is 80:1, and the molar ratio of Al element of triethylaluminum to external electron donor methylcyclohexyldimethoxysilane is 8: 1. Other conditions are the same as in Example 1.

[0064] The polymer product is free-flowing granular or spherical fine powder particles. The properties of the obtained polymer alloy are shown in Table 1.

Embodiment 3

[0066] Using the same continuous polymerization reaction device and operation process as in Example 1, the co-catalyst triethylaluminum (5% by mass in hexane solution), the external electron donor diisopropyldimethoxysilane (3% by mass) Hexane solution), Ti-containing main catalyst (5% by mass liquid paraffin mixture), liquid propylene, and hydrogen continuously enter the first reactor at a fixed rate to perform liquid phase bulk polymerization of propylene.

[0067] The molar ratio of Ti element to butene-1 in the main catalyst is 1×10 -6 :1, the molar ratio of Al in triethylaluminum to Ti in the main catalyst is 100:1, and the molar ratio of Al in triethylaluminum to the external electron donor diisopropyldimethoxysilane is 10:1, control the flow rate of monomer butene-1 entering the third tank so that the ratio of flow rate to propylene is 5:1.

[0068] The polymer product is free-flowing granular or spherical fine powder particles. The properties of the obtained polymer alloy a...

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Abstract

The invention discloses preparation methods of a polybutylene alloy material. The first preparation method comprises the following steps: firstly polymerizing butane-1; and then introducing propylene to obtain a polybutylene alloy which takes polybutylene-1 as a core and polypropylene as a shell. The second method comprises the following steps: firstly polymerizing propylene; and then introducing butane-1 to obtain a polybutylene alloy which takes polypropylene as a core and polybutylene-1 as a shell. A polyolefin alloy is prepared by adopting two sections of polymerization by the following steps: carrying out polymerization reaction of polybutylene-1 or polypropylene in the first section; on the premise that the activity of a catalyst is not fully diminished, conveying the polymer to equipment in the second section to be reacted with an introduced monomer butene-1 or propylene; and freely adjusting the temperature, pressure and time conditions of reactions in two sections to obtain a novel polybutylene alloy material with a controllable relative amount. The preparation methods disclosed by the invention can be used for producing the polybutylene alloy material which comprises 10-99% by mass of isotactic polybutene-1, 1-80% by mass of isotactic polypropylene and 0.01-10% by mass of a butene-1-propylene copolymer. The yield can be greatly improved and the equipment utilization ratio is improved.

Description

Technical field [0001] The invention belongs to the technical field of alloy materials, and particularly relates to a preparation method of a polybutene alloy material. Background technique [0002] Under the premise of not affecting the high temperature creep resistance and impact resistance of polybutene-1 resin, polybutene alloy materials can shorten the molding cycle, improve its strength and modulus, etc., and have the excellent properties of polybutene-1 and polypropylene. performance. [0003] The preparation of polybutene alloy by in-situ polymerization method in the kettle can effectively improve the two-phase dispersion problem. At the same time, the in-situ synthesis of a small amount of copolymer can significantly improve the phase interface problem of the alloy. The alloy can also be adjusted by changing the polymerization process parameters. The content of the components, molecular weight and its distribution and other parameters. In-situ synthesis of polybutene all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F110/08C08F110/06C08F210/08C08F210/06C08F293/00C08F4/646C08F4/68C08F2/34C08F2/02C08F2/01C08L23/20C08L23/12
CPCY02P20/52
Inventor 贺爱华刘晨光邵华峰姜秀波刘振学
Owner QINGDAO UNIV OF SCI & TECH
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