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:
Dec. 11, 2012
Filed:
Mar. 18, 2010
Hisashi Hasegawa, Nishinomiya, JP;
Yoshisada Kayano, Nishinomiya, JP;
Hisashi Hasegawa, Nishinomiya, JP;
Yoshisada Kayano, Nishinomiya, JP;
Shiraishi Kogyo Kaisha, Ltd., Osaka, JP;
Abstract
The invention provides a surface-treated calcium carbonate that when incorporated into a paste resin, can impart low viscosity and high thixotropy and offers excellent storage stability, and paste resin compositions containing the same. The surface-treated calcium carbonate is a calcium carbonate surface-treated with a surface treatment agent containing a sodium salt or potassium salt of a fatty acid, wherein the total content of a sodium salt and a potassium salt of lauric acid, a sodium salt and a potassium salt of palmitic acid and a sodium salt and a potassium salt of stearic acid in the surface treatment agent is 80% by weight or more, the content of the sodium salt and potassium salt of lauric acid is within the range of 30% to 60% by weight, the content of a sodium salt and a potassium salt of an unsaturated fatty acid in the surface treatment agent is 5% by weight or less, and the BET specific surface area is 10 m/g or more.