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:
Aug. 19, 2014
Filed:
Jul. 29, 2011
Norifumi Azeyanagi, Soka, JP;
Makoto Ubukata, Soka, JP;
Tomohisa Ikuta, Soka, JP;
Yumiko Kawai, Soka, JP;
Norifumi Azeyanagi, Soka, JP;
Makoto Ubukata, Soka, JP;
Tomohisa Ikuta, Soka, JP;
Yumiko Kawai, Soka, JP;
Kusumoto Chemicals, Ltd., Tokyo, JP;
Abstract
The invention provides an aqueous pigment anti-settling agent which, when added to an aqueous coating material, demonstrates excellent pigment anti-settling effect, and in particular, demonstrates excellent pigment anti-settling effect even under a high-temperature environment. This aqueous pigment anti-settling agent is an aqueous dispersion obtained by neutralizing, with a base, a mixture comprising [A] a polyamide obtained by reacting a diamine having 2 to 34 carbon atoms and an excess amount with respect to the diamine of a dicarboxylic acid having 4 to 36 carbon atoms or a mixture of a dicarboxylic acid having 4 to 36 carbon atoms and a monocarboxylic acid having 2 to 22 carbon atoms, [B] an amide wax obtained by reacting a monocarboxylic acid having 2 to 22 carbon atoms and a diamine having 2 to 12 carbon atoms and/or a monoamine having 2 to 22 carbon atoms and/or [C] hydrogenated castor oil, then, dispersing the obtained neutralized product into a medium mainly composed of water, and optionally, heat-treating the obtained dispersion.