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A kind of cyclic olefin polymer and preparation method thereof

A technology of cycloolefin polymers and compounds, applied in the field of polymers, can solve the problems of low glass transition temperature and melting point, and achieve the effect of high glass transition temperature and melting point

Inactive Publication Date: 2016-04-06
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the cycloolefin polymer prepared by the method provided by the prior art has a higher molecular weight, the glass transition temperature and melting point of this cycloolefin polymer are lower

Method used

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  • A kind of cyclic olefin polymer and preparation method thereof
  • A kind of cyclic olefin polymer and preparation method thereof
  • A kind of cyclic olefin polymer and preparation method thereof

Examples

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preparation example Construction

[0033] The present invention provides a kind of preparation method of cycloolefin polymer described in above-mentioned technical scheme, comprising:

[0034] Under the action of the main catalyst and the co-catalyst, the compound having the structure shown in formula II is polymerized in a solvent to obtain a cycloolefin polymer;

[0035]

[0036] In the present invention, the solvent, the compound having the structure shown in formula II and the co-catalyst are preferably mixed, and the main catalyst is added to the obtained mixture to carry out polymerization reaction to obtain the cycloolefin polymer. The present invention preferably carries out the polymerization reaction under dry, oxygen-free conditions. In the present invention, the polymerization reaction can be carried out in a Braun glove box, or can be carried out under the protection of nitrogen or inert gas by using standard Schlenk technique. The present invention has no special limitation on the inert gas, a...

Embodiment 1

[0070]In the dry 2L three-necked flask equipped with a constant pressure dropping funnel, condenser tube and mechanical stirring, add 500 ml of anhydrous ether after adding 30 grams of magnesium powder; allyl bromide and 200 ml of anhydrous ether to obtain an allyl bromide ether solution; at 34°C, under stirring conditions, add 50 ml of allyl bromide ether solution dropwise to the above magnesium powder for 1 hour reaction to obtain allyl magnesium bromide; 60 g of vinyl dimethyl chlorosilane was added dropwise to the allyl magnesium bromide to carry out a coupling reaction for 1 hour to obtain a coupling reaction product. After the coupling reaction product is mixed with saturated ammonium chloride solution, it is filtered to obtain a filtrate; the filtrate is allowed to stand and layered to obtain a filtrate of the ether layer; the filtrate of the ether layer is distilled, and the initial temperature of the distillation is The temperature was 34°C, and the distillate was col...

Embodiment 2

[0074] Under the protection of argon, 12.5 mL of toluene, 1 mL of the compound having the structure shown in II prepared in Example 1, and 0.5 mL of triisobutylene with a molar concentration of 1 mol / L were sequentially added to the dry polymerization reactor. aluminum base (TIBA) toluene solution, 1 mL of Ph at a molar concentration of 10 μmol / mL 3 CB(C 6 f 5 ) 4 Toluene solution, after stirring the above-mentioned substances at 40°C for 10 minutes, add 5 mL of toluene solution of the compound having the structure shown in formula III with a molar concentration of 1 μmol / mL in the above-mentioned polymerization reactor, and carry out the reaction for 10 minutes under stirring conditions Polymerization reaction to obtain the reaction product.

[0075] Pour the reaction product into 10% hydrochloric acid ethanol solution by volume, filter to obtain the precipitated product, wash the precipitated product 3 times with acetone, put it in a vacuum oven and dry it at 60°C for 24 ...

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Abstract

The invention provides a cycloolefine polymer. The cycloolefine polymer is provided with a structure as shown in a formula I, wherein in the formula I, x and y are degrees of polymerization, x is not less than 500 and not greater than 6500, and y is not less than 50 and not greater than 700. The cycloolefine polymer provided by the invention contains silicon, and due to the introduction of silicon atoms, the cycloolefine polymer provided by the invention is high in glass-transition temperature and melting point. In addition, the cycloolefine polymer provided by the invention further is high in cis-form, isotacticity and weight-average molecular weight. Experimental results indicate that the glass-transition temperature of the cycloolefine polymer provided by the invention is 85-99.5 DEG C, the melting point is 200-228.1 DEG C, the content of a cis-form structure in the cycloolefine polymer is greater than 90%, and the weight-average molecular weight of the cycloolefine polymer is 300-835 kg / mol.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a cycloolefin polymer and a preparation method thereof. Background technique [0002] Cycloolefin polymers are a class of high value-added thermoplastic engineering plastics polymerized from cycloolefins. This polymer has high transparency, low dielectric constant, excellent heat resistance, chemical resistance, and melt flow. Good resistance, barrier property and dimensional stability. Therefore, cycloolefin polymers can be widely used in the manufacture of various optical, information, electrical, and medical materials. [0003] There are two methods for preparing cycloolefin polymers, one is ring-opening metathesis polymerization, and the other is addition polymerization. In the ring-opening shift polymerization method, the polymerized monomer forms new double bonds through double bond breakage and displacement, and the resulting cycloolefin macromolecular chain has a large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F130/08C08F4/6592
Inventor 李彦国王彬李悦生刘三荣崔磊
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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