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:
Jul. 30, 2002
Filed:
Jun. 22, 2000
Applicant:
Inventors:
Rosanna P. Rudy, East Hanover, NJ (US);
Andrew A. Romano, Sparta, NJ (US);
Assignee:
Ashland Inc., Covington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 1/904 ; C08L 8/312 ;
U.S. Cl.
CPC ...
B01D 1/904 ; C08L 8/312 ;
Abstract
This invention relates to a defoamer composition comprising (a) hydrophobic silica; (b) a linear polysiloxane having end-blocked polyoxypropylene groups; (c) a polysiloxane having a pendant polyoxypropylene group; (d) a nonionic surfactant; and preferably (e) an inert diluent. The defoamer compositions are used in paints and coatings.