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Styrene and functional styrene high syndiotactic copolymer and preparation method thereof

A technology for converting styrene and styrene, applied in the field of polymer preparation, can solve the problems of loss of polymerization activity and difficulty in copolymerization, and achieve the effect of increasing polarity and increasing blending performance

Active Publication Date: 2016-02-17
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, styrene containing functionalized groups is easy to coordinate with the catalyst to lose its polymerization activity, so the copolymerization of functionalized styrene and styrene is also very difficult.

Method used

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  • Styrene and functional styrene high syndiotactic copolymer and preparation method thereof
  • Styrene and functional styrene high syndiotactic copolymer and preparation method thereof
  • Styrene and functional styrene high syndiotactic copolymer and preparation method thereof

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Experimental program
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preparation example Construction

[0059] The present invention also provides a preparation method of a high syndiotactic copolymer of styrene and functionalized styrene, comprising:

[0060] Under the action of a catalyst, styrene and functionalized styrene are reacted to obtain a high syndiotactic copolymer of styrene and functionalized styrene, and the high syndiotactic copolymer has a structure shown in formula (I) and formula (II ) repeating unit of the structure shown:

[0061]

[0062] The functionalized styrene has a structure shown in formula (III):

[0063]

[0064] In formula (II) and formula (III),

[0065] R is independently selected from C 1～20 Alkoxyl, C 6～20 Aryloxy group, C 1～20 Alkylthio or C 6～20 The arylthio group;

[0066] m is the number of substituents R, independently selected from integers ranging from 1 to 5;

[0067] The catalysts include rare earth complexes, organoboron compounds and organoaluminum compounds.

[0068] The present invention uses rare earth complexes, or...

Embodiment 1

[0131] At 25°C, add 10 μmol of the rare earth complex having the structure shown in Formula 1, 10 μmol of [Ph 3 C][B(C 6 f 5 ) 4 ], 100 μmol triisobutylaluminum and 5 mL of toluene solvent were mixed for 2 minutes to obtain a molar concentration of the rare earth complex of 2.0 mmol L –1 catalyst solution in toluene.

Embodiment 2～41

[0133] According to the method described in Example 1, the catalyst solutions were prepared using the raw material ratios and reaction conditions in Table 1; Table 1 shows the raw material ratios and reaction conditions in Examples 2-41. The volume of the reaction vessel can be determined by itself according to the volume of the added solvent.

[0134] Raw material ratio and reaction conditions of table 1 embodiment 2~41

[0135]

[0136]

[0137]

[0138]

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Abstract

The invention provides a styrene and functional styrene high syndiotactic copolymer, which comprises repetitive units of a structure shown in a formula (I) and a structure shown in the formula (II). The experiment result shows that the syndiotactic selectivity of the high syndiotactic copolymer is no less than 90%, an insertion rate of functional styrene can be adjusted at will and can reach as high as more than 99%. The copolymer contains oxygen group or sulfur group, polarity of high syndiotactic polystyrene can be increased, so that blending performance of high syndiotactic polystyrene and other polymers can be increased.

Description

technical field [0001] The invention relates to the technical field of polymer preparation, in particular to a high syndiotactic copolymer of styrene and functionalized styrene and a preparation method thereof. Background technique [0002] High syndiotactic polystyrene (sPS) was first realized in 1986 by the Japanese Idemitsu Kosan company through the catalytic polymerization of metallocene catalysts using titanium. sPS has become a very attractive material in industry due to its high melting point, high crystallinity, high elastic modulus, low dielectric constant, low dissipation factor, and excellent heat and solvent resistance. [0003] However, the brittleness of sPS and the lack of polar groups in the polymer are fatal shortcomings when it is used alone as a material, which limits the application field of sPS. Therefore, improving the brittleness of sPS, increasing its polarity, and synthesizing functionalized sPS have always been the subjects that the majority of sci...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/14C08F4/52
Inventor 崔冬梅刘东涛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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