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Preparation method for homopolymer or copolymer of cyclohexyl ethylene and catalyst

A cyclohexane-based ethylene and styrene copolymer technology is applied in the preparation of cyclohexane-based ethylene homopolymers or copolymers and in the field of catalysts, and can solve the problems of slow hydrogenation speed, large catalyst dosage, difficult separation and the like

Inactive Publication Date: 2014-06-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the problems of low effective specific surface area, difficult separation, large amount of catalyst and slow hydrogenation speed in the existing method for preparing homopolymer or copolymer of cyclohexylethylene by catalytic hydrogenation. , harsh hydrogenation conditions and other defects, and provide a preparation method of homopolymer or copolymer of cyclohexyl ethylene and a catalyst

Method used

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  • Preparation method for homopolymer or copolymer of cyclohexyl ethylene and catalyst
  • Preparation method for homopolymer or copolymer of cyclohexyl ethylene and catalyst
  • Preparation method for homopolymer or copolymer of cyclohexyl ethylene and catalyst

Examples

Experimental program
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Embodiment 1

[0062] Select diameter as 0.4nm in embodiment 1 in table 2, and specific surface area is 500m 2 / g, single-walled carbon nanotubes without surface functional groups were used as the carrier, carbon nanotubes were added into ethanol, and ultrasonically dispersed for 0.2h. According to the first group of formulations in Table 3, the hydrochloride ethanol solution containing the main active component, the second active component and the cocatalyst component was added to the dispersed carbon nanotube solution, and the ultrasonic dispersion was continued for 0.5 h. Filter the impregnated carbon nanotubes, wash and dry, add NaBH 4 The reducing agent is reduced and treated at 100°C for 2 hours to obtain a supported carbon nanotube catalyst.

Embodiment 2

[0064] Select diameter as 10nm in embodiment 2 in table 2, and specific surface area is 220m 2 / g, multi-walled carbon nanotubes without surface functional groups were used as the carrier, carbon nanotubes were added into ethanol, and ultrasonically dispersed for 0.5h. Add the hydrochloride ethanol solution containing the main active component, the second active component and the cocatalyst component into the dispersed carbon nanotube solution according to the second group of formulations in Table 3, and continue ultrasonic dispersion for 2 hours. Filter the impregnated carbon nanotubes, wash and dry, add NaBH 4 The reducing agent is reduced and treated at 100°C for 2 hours to obtain a supported carbon nanotube catalyst.

Embodiment 3

[0066] Select diameter as 2nm in embodiment 3 in table 2, and specific surface area is 300m 2 / g, single-walled carbon nanotubes containing surface functional groups -OH as a carrier, carbon nanotubes were added to ethanol, and ultrasonically dispersed for 2 hours. Add the nitrate ethanol solution containing the main active component, the second active component and the cocatalyst component into the dispersed carbon nanotube solution according to the third group of formulations in Table 3, and continue ultrasonic dispersion for 2 hours. Filter, wash and dry the impregnated carbon nanotubes, add formaldehyde as a reducing agent for reduction, and treat at 160°C for 4 hours to obtain a supported carbon nanotube catalyst.

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Abstract

The invention discloses a catalyst, comprising a carbon nano-tube and a main active hydrogenation component, wherein in the catalyst, the carbon nano-tube is used as a catalyst carrier carried with the main active hydrogenation component, and the main active hydrogenation component is a conventional metal catalyst for catalytic hydrogenation reaction in the field of hydrogenation reaction. The invention further discloses a preparation method for the catalyst, and a preparation method for the homopolymer or copolymer of cyclohexyl ethylene. In the preparation methods disclosed by the invention, hydrogenation can be performed on the polymer solution of polystyrene or styrene copolymer in certain conditions by selecting special catalyst, thereby obtaining the homopolymer or copolymer of cyclohexyl ethylene.

Description

technical field [0001] The invention specifically relates to a preparation method of a homopolymer or a copolymer of cyclohexylethylene and a catalyst. Background technique [0002] The synthesis and preparation of new high-performance polymers has always been an important research direction for researchers and manufacturers. Hydrogenation modification is an important method to synthesize new polymers. Among them, cyclohexylethylene homopolymers and copolymers are a class of high-performance new polymers that can be prepared by hydrogenation modification and have wide application prospects. [0003] Cyclohexylethylene homopolymer—polycyclohexylethylene (PCHE) has the advantages of high light transmittance, light weight, high glass transition temperature, low water absorption, good optical properties, high strength, and easy molding. Compared with the widely used polycarbonate (PC) material, it has obvious advantages. As shown in Table 1, the glass transition temperature of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/02C08F4/80C08F12/08C08F8/04
Inventor 曹贵平韩凯悦孟晨朱振炜
Owner EAST CHINA UNIV OF SCI & TECH
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