Patent · US Active

Process for producing blends of syndiotactic, 1,2-polybutadiene and rubbery elastomers

US8067503B2 · kind B2 · utility

3Cited by

17References

18Claims

0Family size

Assignee

BRIDGESTONE CORPORATION · JP

Inventors

Christine Rademacher · Akron, US
Steven Luo · Copley, US
Zhong-Ren Chen · Stow, US
Walter Tomaszewski · Canton, US
Edward D. Kelley · Singapore, SG

Key dates

Filing date	Jan 23, 2007
Grant date	Nov 29, 2011
Priority date	—
Expiry date	Feb 19, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T152/10495
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of an elastomeric terpolymer by using a chromium-based, molybdenum-based, or iron-based catalyst composition. Polymer composition comprising the blend with improved properties is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.