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A kind of isoprene-styrene copolymer and preparation method thereof

A technology of styrene copolymer and isoprene, which is applied in transportation and packaging, rolling resistance optimization, special tires, etc., to achieve high glass transition temperature, reduce rolling resistance, and improve wet skid resistance

Active Publication Date: 2022-05-31
QINGDAO UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Coordination polymerization is currently mostly used to synthesize copolymers of cis-1,4-polyisoprene and styrene, and mainly based on rare earth catalysts and metallocene catalyst systems, and no traditional supported titanium catalysts are used to catalyze the synthesis of isopentyl Report on Stereoregular Copolymers of Diene and Styrene

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  • A kind of isoprene-styrene copolymer and preparation method thereof

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Embodiment 1～4

[0020]

Embodiment 5

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Abstract

The invention discloses a high-trans polyisoprene / isotactic polystyrene copolymer and a preparation method thereof. The copolymer consists of 2wt%-70wt% isotactic polystyrene with an isotactic content >75mol% and 30wt%-98wt% high-trans polyisoprene with a trans-1,4-structure content >90mol% . The copolymer adopts a magnesium chloride supported titanium catalyst as a main catalyst, and an alkyl aluminum as a cocatalyst, and is prepared by copolymerizing isoprene and styrene. The copolymer of the invention is composed of isoprene monomer chains and styrene monomer chains with different sequence content and distribution in multiple levels. Adjusting the content of two chain segments in the copolymer can adjust the thermal performance and physical and mechanical properties of the copolymer.

Description

A kind of isoprene-styrene copolymer and preparation method thereof technical field The invention belongs to synthetic rubber material field, particularly trans-1,4-structure polyisoprene and high isotactic junction Preparation method of polystyrene copolymer and high trans polyisoprene / isotactic polystyrene copolymer prepared by the method polymer. Background technique [0002] The trans-1,4-structure diene polymer has excellent flexural fatigue resistance, low rolling resistance, Low compression heat and wear for high performance tire compounds. Patent (CN103387641A, CN 105601814 A, US 5,100,965, WO.Pat.97,23521, US 4,020.115, US 5,844,044, UK Pat.Appl.2,029,426, Journal Applied Polymer Science 2004, 92:2941) reported high trans-structured butadiene (Bd)-isoprene Diene (Ip) copolymer TBIR) has excellent physical and mechanical properties, especially fatigue resistance and crack growth properties The ideal compound for developing high-performance tires. Butadi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/10C08F212/08C08F4/642C08F4/02B60C1/00
CPCC08F236/10C08F212/08B60C1/0016C08F4/642C08F4/022Y02T10/86
Inventor 邵华锋贺爱华
Owner QINGDAO UNIV OF SCI & TECH