The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1999
Filed:
May. 02, 1997
William C Fultz, Rising Sun, MD (US);
Michel J Martin, Plainsboro, NJ (US);
Mark A Beavers, Delta, PA (US);
J.M. Huber Corporation, Edison, NJ (US);
Abstract
A precipitated amorphous silica product particularly useful as a highly dispersible filler to elastomeric compounds, especially rubber passenger tire tread formulations. The invention has a CTAB specific surface area of about 10 m.sup.2 /g to less than 140 m.sup.2 /g; a multi-point BET surface area of about 50-261 m.sup.2 /g; a 5% pH value of about 5.0-8.5; a DBP oil absorption of about 160-310 cm.sup.3 /100 g; a linseed oil absorption of about 150-300 cm.sup.3 /100 g; a projected surface area of no greater than about 4000 nm.sup.2 ; and a pore volume ratio of pores ranging from 175 to 275 .ANG. in diameter to all pores less than 400 .ANG. in diameter of about 10% to less than 50%.