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:
Nov. 02, 2010
Filed:
May. 19, 2005
Yasuhiro Nagatani, Shunan, JP;
Ryuji Ishimoto, Shunan, JP;
Masao Ariyuki, Shunan, JP;
Tokuyama Corporation, Shunan-shi, JP;
Abstract
There is provided particulate silica which can be suitably used as a viscoelasticity modifier such as a thickener which is added to liquid such as water, a liquid resin or paint to adjust its viscoelastic properties such as viscosity and thixotropic nature, a reinforcer or filler for silicone rubber or sealants, a polishing agent for CMP (Chemical Mechanical Polishing) or a surface coating agent for ink-jet printing paper. The particulate silica has a BET specific surface area S of 130 to 380 m/g, and its fractal shape parameter αin an α-value analysis target range of 20 to 30 nm satisfies the following equation (1) and its fractal shape parameter αin an α-value analysis target range of 30 to 50 nm satisfies the following equation (2).α1+0.00175<2.518  (1)α2+0.00174<2.105  (2)