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A kind of styrenic copolymer with furyl group and preparation method thereof

A styrene, copolymer technology

Active Publication Date: 2019-05-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although conventional chemical crosslinking can improve its solvent resistance, it loses the ability of secondary molding

Method used

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  • A kind of styrenic copolymer with furyl group and preparation method thereof
  • A kind of styrenic copolymer with furyl group and preparation method thereof
  • A kind of styrenic copolymer with furyl group and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of hydroxylated styrene-ethylene / butylene-styrene linear block copolymers by anionic polymerization

[0042] Vacuumize the 1L polymerization kettle, replace it with high-purity nitrogen three times, and add 650ml of purified cyclohexane first, with a designed solid content of 10%. According to table 1 and table 2 proportioning feed, first add p-4-vinylbenzyl acetate and styrene mixed monomer, 0.25ml tetrahydrofuran of the first section, start stirring, then add n-butyllithium solution according to table 2 ( Concentration 0.5M), react at 40°C for 1 hour, then add butadiene, continue to react for 1 hour, and finally add the third stage of 4-vinylbenzyl acetate and styrene mixed monomer, and react for another 1 hour. After the reaction is over, the polymerization liquid is pressed into the hydrogenation tank, and hydrogen gas is introduced to terminate the reaction. Half an hour later, add 1 mL of methyl o-toluate with a concentration of 0.02 mol / L, 30 mg ...

Embodiment 2

[0057] (1) Preparation of hydroxyl-containing star-shaped styrene-ethylene / butylene-styrene block copolymers by anionic polymerization

[0058] According to the prescription of 1-4, 1-5, 1-6 and 1-7 in table 1, synthesize the linear styrene-butadiene-styrene linear block copolymer containing 4-vinylbenzyl acetate structural unit , after adding the third-stage reaction monomer and reacting for 1 hour, press the material into the hydrogenation tank, add the coupling agent according to the formula in Table 4, and continue the reaction at 40°C for 30 minutes to obtain the structure containing 4-vinylbenzyl acetate Unit star styrene-butadiene-styrene block copolymer glue.

[0059] After the reaction was completed, hydrogenation was performed according to the method of Example 1, and the product was precipitated and dried to obtain a star-shaped styrene-ethylene / butylene-styrene block copolymer glue with 4-vinylbenzyl acetate structural units.

[0060] Dissolve the product in n-oct...

Embodiment 3

[0070] (1) Preparation of hydroxylated styrene-ethylene / propylene-styrene block copolymers by anionic polymerization

[0071] Vacuumize the 1L polymerization kettle and replace it with high-purity nitrogen three times. First add 650ml of purified cyclohexane with a designed solid content of 15%, and then feed according to the formula in Table 6 and Table 7. First add the mixed monomer of p-4-acetoxystyrene and styrene in the first stage, 1g tetrahydrofurfuryl alcohol ethyl ether, start stirring, then add tert-butyllithium solution (concentration 0.5M), and react at 60°C for 50min , and then increase the temperature to 70° C. and add isoprene, continue the reaction for 1 hour, and finally add the mixed monomer of p-4-acetoxystyrene and styrene in the third stage, and react for another 1 hour. After the reaction is over, the polymerization liquid is pressed into the hydrogenation tank, and hydrogen gas is introduced to terminate the reaction. After half an hour, 30mg of catalys...

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Abstract

The invention discloses a furyl-containing styrene copolymer and a preparation method thereof. The styrene copolymer with furyl group of the present invention is prepared by direct or indirect reaction between the styrene copolymer with hydroxyl group and active monomer with furyl group. The styrenic copolymer with furyl group prepared by the invention can be used to prepare the styrenic copolymer with reversible cross-linking bonds.

Description

technical field [0001] The invention belongs to styrene copolymers, in particular to a styrene copolymer with a furyl group and a preparation method thereof. Background technique [0002] Styrenic copolymers are a class of polymer materials with polystyrene segments in the molecular chain, such as polystyrene / butadiene / styrene block copolymer (SBS), styrene / ethylene-butylene / Styrene Block Copolymer (SEBS), Polystyrene / Isoprene / Styrene Block Copolymer (SIS), Polystyrene / Isoprene / Styrene Block Copolymer (SIS), Polystyrene Ethylene / ethylene-propylene / styrene block copolymer (SEPS), polystyrene / ethylene-propylene block copolymer (SEP), etc. There is a phase region formed by the interpenetration of the soft segment and the hard segment of the molecular chain in the matrix of these materials. At room temperature, the soft segment and the hard segment are respectively in a viscous fluid state and a glass state, but the hard segment restricts the flow of the soft segment, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F297/04C08F212/08C08F236/10C08F212/14C08F212/12C08F210/10C08F210/08C08F210/14C08F210/12C08F8/32C08F8/14
CPCC08F8/32C08F8/14C08F297/048C08F212/08C08F236/10C08F210/10
Inventor 张爱民徐雨
Owner SICHUAN UNIV
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