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. 09, 2002
Filed:
Feb. 29, 2000
Yoshitaka Aoki, Usui-gun, JP;
Akinari Itagaki, Usui-gun, JP;
Shin-Etsu Chemical Co., Ltd., , JP;
Abstract
An antifoaming composition contains (A) 58 to 90% by weight of an oil compound and (B) 10 to 42% by weight of a mixture. The oil compound (A) consisting essentially of (i) 80 to 99.9% by weight of an organopolysiloxane composed of R SiO , R SiO and R SiO units in a ratio of (0.1 to 5):(90 to 99.8):(0.1 to 5) by mol % and (ii) 0.1 to 20% by weight of finely divided silica. The mixture (B) consisting essentially of (iii) 30 to 90% by weight of a polyoxyalkylene-modified silicone oil having a viscosity of 120,000 to 1,000,000 centipoise at 25° C. and (iv) 1 to 70% by weight of a polyhydric alcohol alkyl ether having a molecular weight of 50 to 300. The composition has improved antifoaming properties, water dispersibility and stability.