Method for preparing olefin-based segmented copolymers

A technology of multi-block copolymers and olefin-based polymers, applied in the direction of organic chemistry, etc., can solve problems such as not being designed

Inactive Publication Date: 2013-01-02
洪性澈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, a specific method for the efficient and simple preparation of olefin-based multi-block copolymers using reversible addition-fragmentation chain transfer (RAFT) has not yet been devised.

Method used

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  • Method for preparing olefin-based segmented copolymers
  • Method for preparing olefin-based segmented copolymers
  • Method for preparing olefin-based segmented copolymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049]

[0050] As the olefin polymer, ethylene-propylene-diene terpolymer (EPDM) rubber available from Kumhopolychem, KEP-650L (Mn=120700 g / mol, M w / M n = 2.20, ethylidene norbornene content = 8.9 wt%, about 90 ethylidene norbornene units per EPDM chain). As chain transfer agent, dibenzyl trithiocarbonate available from Arkema was used. Styrene (99.8wt%, Aldrich) in CaH 2 Distilled under vacuum and used. 2,2-azobisisobutyronitrile (AIBN, 98wt%, Samchun Chemical), dicumyl peroxide (DCP, 99wt%, Aldrich), xylene (98wt%, Samchun Chemical), Acetone (95 wt%, Samchun Chemical), tetrahydrofuran (THF, 98 wt%, Samchun Chemical) and anisole (99 wt%, Aldrich).

[0051]

[0052] Gel Permeation Chromatography (GPC) Analysis

[0053] GPC analysis was performed using RI-detector and UV-detector (RID-10A, SPD-20AV, Shimadzu) and three columns (Styragel HR 5, 4, 2). Polystyrene standards were used to calibrate the molecular weight, and the HPLC THF solvent was used to inject 40 μL...

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Abstract

The present application relates to a method for preparing olefin-based segmented copolymers through reversible addition-fragmentation chain transfer (RAFT), wherein the method comprises: a step of polymerizing vinyl-based monomers through reversible addition-fragmentation chain transfer (RAFT) using a trithiocarbonate-based chain transfer agent to synthesize vinyl-based polymers; and a step of grafting the synthesized vinyl-based polymers to olefin-based polymers. The method of the present invention successfully synthesizes olefin-based segmented copolymers through the two simple above-described steps.

Description

technical field [0001] The present invention relates to a method for preparing olefinic multi-block copolymers by using reversible addition-fragmentation chain transfer (RAFT), in particular, relates to a method for preparing olefinic multi-block copolymers, the method utilizes The trithiocarbonate tether transfer agent enables the synthesis of vinyl polymers via RAFT, allowing the vinyl polymers to be easily grafted onto olefin polymers. Background technique [0002] The study of manipulating the molecular structure of polymers to tune their chemical and physical properties is of great importance in the field of polymer chemistry. Polymer chains are divided into homopolymers and copolymers according to their components, and are also divided into various forms according to the type of chain connection. Changes in these components and molecular structures will cause changes in the chemical and physical properties of the polymers, thus, polymers with different properties can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/00C08F265/06C08F2/04C07C329/00
CPCC08F210/18C08F2/38C08F299/00C08F255/00C08F4/00C08F2438/03C08F210/06C08F236/20C08F2500/25C08F265/06C08F2/04C07C329/00
Inventor 洪性澈朱相一
Owner 洪性澈
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