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Poly-1-butene and preparation method thereof

A technology of butene and olefin, applied in the field of preparation of poly-1-butene, can solve the problem of low isotacticity and achieve the effect of high catalyst activity

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of low isotacticity in the preparation of poly-1-butene by Ziegler-Natta catalyst, the invention provides a kind of poly-1-butene and the preparation method of the poly-1-butene

Method used

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  • Poly-1-butene and preparation method thereof
  • Poly-1-butene and preparation method thereof

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preparation example Construction

[0014] The invention provides a method for preparing poly-1-butene, the method comprising: under the condition of olefin solution polymerization, contacting a monomer containing 1-butene with an olefin catalyst, and the olefin catalyst contains a solid component , an external electron donor compound and an organoaluminum compound, the solid component contains a carrier and a titanium compound and an internal electron donor compound loaded on the carrier; in the monomer containing 1-butene, 1-butene The content of alkene is 60-100 mol%, and described external electron donor compound is as shown in formula (1):

[0015]

[0016] Among them, R 2 and R 3 are not the same; and R 1 -R 3 each independently for C 1 -C 6 Straight chain or branched chain alkyl, C 3 -C 8 Cycloalkyl, C 6 -C 14 Aryl or C 5 -C 14 heteroaryl.

[0017] According to the method of the present invention, the olefin solution polymerization reaction conditions may include: the temperature is 0-80°C,...

preparation example 1

[0061] This preparation example is used to illustrate the external electron donor compound and its preparation method of the present invention.

[0062] Add 150 mL of methyl tert-butyl ether, 100 mmol of magnesium powder, and 20 mmol of chloroisopropane into a three-necked flask. At room temperature, iodine is added to initiate the reaction to generate the Grignard reagent. After the reaction is stable, slowly add a mixed solution of 80 mmol isopropane chloride and 100 mmol methyltrimethoxysilane dropwise through the dropping funnel. After 30 minutes, the dropwise addition is completed, and the reaction is started at 80° C. for 3 hours. After the reaction was completed, filter through a G4 funnel, wash the filtered solid residue twice with tetrahydrofuran repeatedly, and collect the filtrate. Use a rotary evaporator to evaporate the THF solvent, distill under reduced pressure, collect fractions at 62-65°C / 100Pa, and obtain a product weighing 5.7g with a purity of 97.5%. The ...

preparation example 2

[0064] This preparation example is used to illustrate the external electron donor compound and its preparation method of the present invention.

[0065] Add 150 mL of methyl tert-butyl ether, 100 mmol of magnesium powder, and 20 mmol of chloroisobutane into a three-necked flask. Under normal temperature conditions, iodine is added to initiate the reaction to generate Grignard reagent. After the reaction is stable, slowly add a mixed solution of 80 mmol chloroisobutane and 100 mmol methyltrimethoxysilane dropwise through the dropping funnel, and finish the dropwise addition after 30 minutes, start heating and react at 80° C. for 3 h. After the reaction was completed, filter through a G4 funnel, wash the filtered solid residue twice with tetrahydrofuran repeatedly, and collect the filtrate. Use a rotary evaporator to evaporate the THF solvent, distill under reduced pressure, collect fractions at 65-69° C. / 100 Pa, and obtain a product weighing 6.8 g with a purity of 98.5%. The ...

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Abstract

The invention discloses poly-1-butene and a preparation method thereof. The preparation method comprises that under conditions of an alkene solution polymerization reaction, a 1-butene-containing monomer and an alkene catalyst contact, wherein the alkene catalyst contains a solid ingredient, an external electron donor compound and an organic aluminum compound, the solid ingredient contains carriers and titanium compound and internal electron donor compounds carried through the carriers, the 1-butene-containing monomer has 1-butene content of 60-100mol%, the external electron donor compound is shown in the formula (1), and R2 and R3 are different and respectively represent C1-C6 straight chain or branched chain alkyl, C3-C8 cycloalkyl, C6-C14 aryl or C5-C14 heteroaryl. The catalyst has high catalyst activity. The prepared poly-1-butene has high isotacticity and low residual catalyst content.

Description

technical field [0001] The invention relates to a poly-1-butene and a preparation method of the poly-1-butene. Background technique [0002] Poly 1-butene (1-PB) has outstanding creep resistance, environmental stress crack resistance, abrasion resistance, windability and good mechanical properties, and it is different from other plastics (such as, PVC, CPVC, HDPE, PP Compared with cross-linked PE, etc.), it can be used below 90°C for a long time and short-term use at 105-110°C. Based on the above characteristics, poly-1-butene is suitable for pipes, food films and sheets, and can even be used for hot and cold water pipes for domestic water and pipes for direct drinking water projects to ensure that the water quality has no secondary pollution. In addition, compared with metal pipes, the energy consumption per unit volume of poly-1-butene pipes is only 1 / 8 and 1 / 4 of steel and aluminum respectively, and poly-1-butene pipes can avoid metal pipes from rusting , Electric corro...

Claims

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Application Information

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IPC IPC(8): C08F110/08C08F4/649C08F4/646C07F7/18
Inventor 谷汉进赵丽梅李化毅王素玉成卫戍张丁赵春红苏海李倩郑涛
Owner CHINA PETROLEUM & CHEM CORP
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