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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.:

US 10336888 B1

PDFFull Text
Date of Patent:
Jul. 02, 2019

Filed:

Mar. 18, 2016

Surface-treated calcium carbonate filler for curable resin composition, and curable resin composition containing filler

Applicant:

Maruo Calcium Co., Ltd., Akashi-shi, JP;

Inventors:

Ryoji Utsumi, Akashi, JP;

Shigeru Sakaguchi, Akashi, JP;

Takaaki Nishioka, Akashi, JP;

Assignee:

MARUO CALCIUM CO., LTD., Akashi-shi, JP;

Attorney:

Kratz, Quintos & Hanson, LLP

Primary Examiner:

Megan McCulley

Int. Cl.
CPC ...
C08K 9/04 (2006.01); C09C 3/08 (2006.01); C09C 1/02 (2006.01); C09J 11/06 (2006.01); C08K 5/56 (2006.01); C09J 201/10 (2006.01); C09K 3/10 (2006.01); C08L 101/10 (2006.01); C08K 3/26 (2006.01); C09J 11/04 (2006.01); C01F 11/18 (2006.01);
U.S. Cl.
CPC ...
C08K 9/04 (2013.01); C01F 11/185 (2013.01); C08K 3/26 (2013.01); C08K 5/56 (2013.01); C08L 101/10 (2013.01); C09C 1/02 (2013.01); C09C 1/021 (2013.01); C09C 3/08 (2013.01); C09J 11/04 (2013.01); C09J 11/06 (2013.01); C09J 201/10 (2013.01); C09K 3/10 (2013.01); C01P 2006/12 (2013.01); C01P 2006/80 (2013.01); C08K 2003/265 (2013.01); C09K 3/1006 (2013.01); C09K 2200/0239 (2013.01);
Abstract

Provided are a surface-treated calcium carbonate filler useful in a curable resin, for imparting performance having excellent heat resistance, color fastness, strength and elongation, and a curable resin containing the filler. A surface-treated calcium carbonate filler for a curable resin composition, in which calcium carbonate synthesized using compact limestone is treated by a surface treatment agent, the surface-treated calcium carbonate filler satisfying the following formulae (1) to (4):0≤Mg≤2000,  (1)0≤Fe≤200,  (2)70≤SFa≤100, and  (3)0≤Ufa≤30,  (4)Mg: a proportion [ppm] of magnesium contained in surface-treated calcium carbonate, Fe: a proportion [ppm] of iron contained in surface-treated calcium carbonate, SFa: a proportion [wt %] of saturated fatty acid in the surface treatment agent comprising a water-soluble monovalent salt of a fatty acid, and UFa: a proportion [wt %] of unsaturated fatty acid in the surface treatment agent comprising a water-soluble monovalent salt of a fatty acid.

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