Amorphous silica particles comprising boron

Details Amorphous silica particles comprising boron Amorphous silica particles comprising boron

2005-02-15

2005-02-15

Le, H. Thi (Department: 1773)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C427S215000, C427S443200, C428S404000, C428S331000

Reexamination Certificate

active

06855427

ABSTRACT:
The invention pertains to an amorphous silica particle comprising 0.1 to 105ppm boron atoms, and optionally 0.05 to 15 wt. % aluminum atoms wherein the boron and aluminum atoms are covalently bonded to the oxygen atoms of the silica network. The amorphous silica particles are used as a reinforcing filler for rubber articles, particularly for tires, more particularly for tire treads.

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