Copolymer rubber having a star-shaped block structure, the preparation process and use thereof

US9133293B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Guozhu Yu · Beijing, CN
• Lin Xu · Zhoushan City, CN
• Xinhe Kang · Beijing, CN
• Nini WANG · Nanchang, CN
• Hui Liu · Shanghai, CN
• Chuanqing Li · Nanhu, CN

Key dates

• Filing date: Jun 27, 2011
• Grant date: Sep 15, 2015
• Expiry date: Feb 24, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/86
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Provided is a copolymer rubber, comprising a copolymer having a star-shaped block structure (SIB-PA)n-X, wherein SIB is a block comprising styrene, butadiene, and isoprene as constituent monomers; PA is a block comprising butadiene or isoprene as a constituent monomer; X is the residue of at least one coupling agent; and n=2-4. Also provided is a process for preparing the copolymer rubber and use thereof.