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

Siloxane group-containing chain end functionalized polymer as well as preparation method and application thereof

A technology of functionalized polymers and siloxanes, which is applied in rolling resistance optimization, transportation and packaging, special tires, etc., can solve the problems of complex preparation process of protective end group method, expensive bulky capping agent, harsh reaction conditions, etc. , to achieve the effect of low price, high anti-wet skid and low cost

Active Publication Date: 2021-10-12
DALIAN MARITIME UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods still have some deficiencies. The reaction conditions are harsh at ultra-low temperature (-78°C); the preparation process of the protected end group method is complicated; the large-volume capping agent used is expensive and has low reactivity. Polymer preparation technology remains an important research topic

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
  • Siloxane group-containing chain end functionalized polymer as well as preparation method and application thereof
  • Siloxane group-containing chain end functionalized polymer as well as preparation method and application thereof
  • Siloxane group-containing chain end functionalized polymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] According to the synthesis method of Comparative Example 2, the difference is that the capping agent DPE (diphenylethylene) is added at a molar ratio of DPE:n-BuLi=1.2, reacted for 30 minutes, and then the capping agent TIVS is added for capping reaction. Obtain the PB (PB-DPE-TIVS) of DPE block and TIVS capping, the GPC spectrogram of capping first and then capping PB is as follows figure 2 Shown in curve (c). Depend on figure 2 It can be seen that the curve (c) still shows a bimodal distribution, and although the coupling rate is reduced, the side reaction cannot be completely eliminated.

Embodiment 2

[0067] According to the synthesis method of Comparative Example 2, the difference is that the capping agent EO (1,2-ethylene oxide) is added at a molar ratio of EO:n-BuLi=1.2, reacted for 30 minutes, and then the capping agent TIVS is added for capping reaction . Obtain the PB (PB-EO-TIVS) of EO capping and TIVS capping, the GPC spectrogram of capping first and capping PB is as follows figure 2 Shown in curve (d). Depend on figure 2 It can be seen that the curve (d) presents a unimodal distribution, indicating that no coupling side reaction occurs.

[0068] Compared with Comparative Example 2, for PB, capping with DPE and then capping with TIVS cannot completely eliminate the side reaction of coupling, while capping with EO and then capping can completely eliminate the side reaction of coupling.

Embodiment 3

[0070] Synthesized according to the method of Comparative Example 3, the difference is that the capping agent EO was added at a molar ratio of EO:n-BuLi=1.2, reacted for 30 minutes, and then the capping agent TIVS was added for capping reaction. Obtain the SSBR (SSBR-EO-TIVS) capped by EO cap TIVS, the GPC spectrogram of capped first and then capped SSBR is as follows image 3 Shown in curve (c). Depend on image 3 It can be seen that the curve (c) presents a unimodal distribution, indicating that no coupling side reaction occurs.

[0071] Compared with Comparative Example 3, for SSBR, capping with EO and capping with TIVS can completely eliminate coupling side reactions.

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

No PUM Login to View More

Abstract

The invention discloses a siloxane group-containing chain end functionalized polymer as well as a preparation method and application thereof, and belongs to the field of preparation of end group functionalized polymers. The method comprises the following steps: in a hydrocarbon solvent, taking a polar organic compound as a regulator and organic lithium as an initiator, initiating a monovinylarene and / or conjugated diene monomer to carry out an anionic polymerization reaction to generate an active polymer, reacting the active polymer with an epoxy capping agent to passivate chain end activity, and then carrying out an end-capping reaction with an end-capping agent containing a siloxane group to obtain the functionalized polymer with the siloxy end group. According to the invention, the epoxy compound is used as a capping agent, and the method has the characteristics of low price, high reaction activity, mild reaction conditions, easy operation and high end capping efficiency. The prepared siloxane-terminated functionalized rubber and the composite material thereof have the properties of good interaction with carbon black / white carbon black, low rolling resistance, high wet skid resistance and the like, and can be applied to the tire industry.

Description

technical field [0001] The invention belongs to the field of preparation of terminal functionalized polymers. It specifically relates to a terminal functionalized polymer prepared by negative ion technology and its preparation method and application, the terminal functionalized styrene-butadiene rubber prepared by the above method and the preparation of the terminal functionalized styrene-butadiene rubber with carbon Rubber compound for tires with good black / white carbon black interaction, low rolling resistance and high wet skid resistance. Background technique [0002] Due to the unique structure of the end of the active anion polymer chain, it can react with a functionalized electrophile (also known as an end-capping agent) to directly prepare an ω-end functionalized polymer, which has become a convenient and convenient way to prepare an end-functionalized polymer. effective method. Through this method, numerous polar functional groups can be introduced into the end of ...

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): C08F136/06C08F236/10C08F8/42C08F8/00C08L15/00B60C1/00
CPCC08F8/42C08L15/00B60C1/0016C08F8/00C08F136/06C08F236/10Y02T10/86
Inventor 廖明义王文恒杨潇寒常云飞
Owner DALIAN MARITIME UNIVERSITY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com