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A kind of highly syndiotactic copolymer of styrene and functionalized styrene and preparation method thereof
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A technology for compounding styrene and styrene, which is applied in the field of polymer preparation, can solve problems such as difficult copolymerization and loss of polymerization activity, and achieve the effect of increasing blending performance and increasing polarity
Active Publication Date: 2018-02-13
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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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.
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[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
Compared with the existing technology, the invention provides a high -end regulatory cluster of the styrene and functional styrene, which has the duplicate unit of the structure and formula (Ⅱ) shown in the formula (I).The experimental results show that the specifications of the high -ranking and communist clubs provided by the present invention are not less than 90 %, and the insertion rate of the functional styrene can be adjusted arbitrarily, and it can be as high as 99 %.At the same time, the oxygen or sulfur group in the consecutive polymers can increase the polarity of the high -alive polystyrene, thereby increasing the coexistence performance of the high -altitude polystyrene and other polymers.
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 fields of sPS. Therefore, improving the brittleness of sPS, increasing its polarity, and synthesizing functionalized sPS have always been the subjects that the majority of sc...
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Patent Type & Authority Patents(China)
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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