Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of functionalized high syndiotactic polystyrene and preparation method thereof

A polystyrene and polystyrene technology, applied in the field of polymers, can solve the problems of polystyrene polarity characterization and achieve high syndiotactic selectivity

Active Publication Date: 2019-02-12
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, Professor T.C. Chung synthesized para-amine-functionalized high-syndiotactic polystyrene (Macromolecules 2000, 33, 5803-5809) in 2000 using a titanium-based catalyst. Characterization of the polarity of styrene
Utilize titanium catalyst to methoxystyrene and only obtain the polymer (Macromolecules1989,22,104-108) of random structure; No. 201180005819.1 Chinese patent), the alkoxy functionalized polystyrene prepared by the above technical scheme has no stereoselectivity, and is a random structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of functionalized high syndiotactic polystyrene and preparation method thereof
  • A kind of functionalized high syndiotactic polystyrene and preparation method thereof
  • A kind of functionalized high syndiotactic polystyrene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0059] The preparation method of the functionalized high syndiotactic polystyrene provided by the invention comprises:

[0060] Under the action of a catalyst, the functionalized styrene is polymerized to obtain functionalized high syndiotactic polystyrene;

[0061] The functionalized styrene has a structure shown in formula II:

[0062]

[0063] In formula II, T is an alkoxy group with 1 to 20 carbon atoms, an aryloxy group with 6 to 20 carbon atoms, an alkylthio group with 1 to 20 carbon atoms, and an alkoxy group with 6 to 20 carbon atoms. An arylthio group or an aryl group with 6 to 20 carbon atoms; T is substituted at any position on the benzene ring;

[0064] n represents the number of substituent T, 1≤n≤5;

[0065] The catalysts include rare earth complexes, organoboron compounds and organoaluminum compounds.

[0066] The present invention utilizes the coordination polymerization method to prepare and synthesize the functionalized high-syndiotactic polystyrene wit...

Embodiment 1

[0122] 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 toluene solvent were mixed for 2 minutes to obtain a rare earth complex with a molar concentration of 2.0 mmol L –1 the catalyst solution.

Embodiment 2～ Embodiment 41

[0124] According to the method described in Example 1, using the conditions in Table 1, the catalyst solutions were respectively prepared; Table 1 is the conditions for preparing the catalyst solutions in Examples 2 to 41. In the present invention, the amount of the rare earth complex used in Examples 2 to 41 is 10 μmol.

[0125] Table 1 Conditions for preparing catalyst solution in Example 2 to Example 41

[0126]

[0127]

[0128]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

The present invention provides functional highly-syndiotactic polystyrene comprising repeating units having the structure of formula I, in the formula I, R is an alkoxy having 1-20 carbon atoms, an aryloxy having 6-20 carbon atoms, an alkylthio group having 1-20 carbon atoms or an aryl group having 6-20 carbon atoms; the R can substitute arbitrary position on a benzene ring; m represents the number of substituent groups R, and the m is greater than or equal to 1 and less than or equal to 5. The present invention provides a preparation method of the functional highly-syndiotactic polystyrene comprising the repeating units having the structure of the formula I, the method comprises polymerization of functionalized styrene to obtain the functional highly-syndiotactic polystyrene under the role of a catalyst, the functionalized styrene has a structure of formula II, and the catalyst comprises a rare earth complexe, an organic boron compound and an organic aluminum compound. The functional highly-syndiotactic polystyrene has high syndiotactic selectivity.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a functionalized high syndiotactic polystyrene and a preparation method thereof. Background technique [0002] High syndiotactic polystyrene (sPS) was first realized in 1986 by the Idemitsu Kosan Company of Japan through catalytic polymerization using a titanium metallocene catalyst. 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. However, the brittleness of sPS is large, and the lack of polar groups in the polymer makes the polarity of sPS poor, which in turn leads to poor bonding performance, dyeing performance and compatibility with other polar polymers of sPS, which limits application of sPS. Therefore, improving the brittleness of sPS, increasing its polarity, and synthesizing functionalized sPS have alw...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F112/14C08F112/32C08F4/54
Inventor 崔冬梅刘东涛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI