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:
May. 24, 2016
Filed:
Jun. 03, 2011
Tsuyoshi Ando, Kyoto, JP;
Tsuyoshi Ando, Kyoto, JP;
SAN NOPCO LTD., Kyoto-shi, JP;
Abstract
The present invention provides a defoaming agent containing, as essential components, hydrophobic dry silica (S) prepared by hydrophobizing silica prepared using a dry process and having a primary particle diameter of 5 to 100 nm, water, and a hydrophobic liquid (Q) containing 1 to 25% by weight of an ester compound (E) represented by the following formula, (R—COO)-D, wherein Rdenotes an alkyl group or an alkenyl group; D denotes a residue resulting from the removal of a hydroxyl group contributing to an ester linkage from a compound (D') containing 2 to 6 carbon atoms and 1 to 6 hydroxyl groups or a residue resulting from the removal of a hydroxyl group contributing to an ester linkage from an adduct prepared by adding an alkylene oxide to the compound (D′); and p denotes an integer from 1 to 3.