US 6,448,298 B1Granted

Defoamer and methods of use thereof

AssigneeBetzDearborn Inc.

InventorsRaimundo Romualdo, Claudio Cândido Luiz, Luiz Antonio Fernandes

Life of this patent

Estimating the term…

Abstract

Disclosed are methods and compositions for defoaming alcoholic fermentations. An aqueous composition of polydimethylsiloxane, an ethylene oxide/propylene oxide block copolymer and a silicone/silica blend is employed to treat the fermentation for foaming.

Claims6

Dependent claims

An aqueous composition comprising (A) a polydimethylsiloxane oil, (B) an ethylene oxide/propylene oxide block copolymer, and (C) a silicone/silica blend, and wherein the weight ratio of (A):(B):(C) is from about 8:10:10 to about 4:5:5.

Dependencies are inferred from the claim text.

Facts

Application: 09/571,743Filed 15 May 2000 · continuation
Priority: 24 Apr 1998
Granted: 10 Sep 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B01D 19/0404
By addition of chemical substances: characterised by the nature of the chemical substance
Y10S 435/812
Chemistry: molecular biology and microbiology: foam control
Y10S 516/904
Colloid systems and wetting agents; subcombinations thereof; processes of: fermentation foam breaking or inhibiting
B01D
Separation

Family

Application09/066,639Parent of this continuation · filed 24 Apr 1998
US 6,083,998 AParent of this continuation
US 6,448,298 B1This patent

From the US filing history. Foreign family members aren’t listed.

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