Patent · US Expired

Method for clay exfoliation, compositions therefore, and modified rubber containing same

US7576155B2 · kind B2 · utility

6Cited by

177References

21Claims

0Family size

Assignee

BRIDGESTONE CORPORATION · JP

Inventors

Xiaorong Wang · Hudson, US
Hiroyuki Fudemoto · Yokohama, JP
James E. Hall · Akron, US
Shunji Araki · Tokyo, JP
Terrence E. Hogan · Uniontown, US
Victor J. Foltz · Akron, US
Pat Sadhukhan · Akron, US
Georg G. A. Bohm · Akron, US

Key dates

Filing date	Dec 18, 2003
Grant date	Aug 18, 2009
Priority date	—
Expiry date	May 22, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A polymer composition of low gas permeability. The composition includes an exfoliated organically-modified clay, butyl rubber, and a polymeric exfoliant. A method for producing the butyl composition by dry mixing the butyl rubber with the exfoliated clay is also provided.

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