Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Functional highly-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: 2016-03-30
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF9 Cites 6 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
  • Functional highly-syndiotactic polystyrene and preparation method thereof
  • Functional highly-syndiotactic polystyrene and preparation method thereof
  • Functional highly-syndiotactic polystyrene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

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

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

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

[0062]

[0063] In formula II, T is an alkoxy group having 1 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, an alkylthio group having 1 to 20 carbon atoms, and a C6-20 group Arylthio or aryl with 6-20 carbon atoms; T is substituted at any position on the benzene ring;

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

[0065] The catalyst includes rare earth complexes, organoboron compounds and organoaluminum compounds.

[0066] The present invention uses the coordination polymerization method to prepare and synthesize functionalized high syndiotactic polystyrene with sulfur and oxygen element functional groups. The functiona...

Embodiment 1

[0122] At 25°C, 10μmol of rare earth complex with the structure shown in formula 1, 10μmol[Ph 3 C][B(C 6 F 5 ) 4 ], 100μmol of triisobutylaluminum and toluene were mixed for 2 minutes, and the molar concentration of the rare earth complex was 2.0mmol·L -1 Catalyst solution.

Embodiment 2～ Embodiment 41

[0124] According to the method described in Example 1, the conditions in Table 1 were used to prepare the catalyst solutions; Table 1 shows the conditions for preparing the catalyst solutions in Examples 2 to 41. In the present invention, the amount of rare earth complexes in Example 2 to Example 41 are all 10 μmol.

[0125] Table 1 Conditions for preparing catalyst solutions 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 Japanese company Idemitsu Kosan through the use of titanium locene metal catalyst to catalyze the polymerization. sPS has become a very attractive material in industry due to its high melting point, high crystallinity, high elastic modulus, low dielectric constant, low loss factor and excellent heat resistance and solvent resistance. However, the brittleness of sPS is relatively large, and the lack of polar groups in the polymer makes the polarity of sPS poor, which in turn leads to poor adhesion, dyeing properties and compatibility with other polar polymers. The application of sPS. Therefore, improving the brittleness of sPS, increasing its polarity, and synthesizing functionalized sPS have always been ...

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 Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com