Abstract  Description  Claims  Drawing  Search report  Cited references 

US5698643A   [0034] 
US5451646A   [0034] 
US7214731B   [0042] 
US6608125B   [0046] 
US20030130535   [0046] 

Standard Methods for Analysis & Testing of Petroleum and Related Products and British Standard 2000 Parts   [0039] 
Journal of the American Chemical Society   [0040] 
The Vanderbilt Rubber Handbook   [0047]