There is provided a defoaming agent having excellent defoaming persistence. The defoaming agent includes; hydrophobic silica having a hydrophobicity (M.sub.X) of 50 to 85, and a rate of change (M.sub.Y/M.sub.X) of a hydrophobicity (M.sub.Y) after immersion for 1 hour in a methanol/ion-exchange aqueous solution (volume ratio of 80/20) of sodium hydroxide with a pH of 13 at 25° C. to the hydrophobicity (M.sub.X) of 0.8 to 1.0; and at least one kind of liquid selected from the group consisting of a hydrocarbon oil, a non-reactive silicone oil and a polyoxyalkylene compound.

There is provided a defoaming agent having excellent defoaming persistence. The defoaming agent includes; hydrophobic silica having a hydrophobicity (M.sub.X) of 50 to 85, and a rate of change (M.sub.Y/M.sub.X) of a hydrophobicity (M.sub.Y) after immersion for 1 hour in a methanol/ion-exchange aqueous solution (volume ratio of 80/20) of sodium hydroxide with a pH of 13 at 25° C. to the hydrophobicity (M.sub.X) of 0.8 to 1.0; and at least one kind of liquid selected from the group consisting of a hydrocarbon oil, a non-reactive silicone oil and a polyoxyalkylene compound.

A stabilized antifoaming composition having at least three components. The first component is an antifoaming agent. The second component is an ethylene-(meth)acrylic acid copolymer. The third component is a salt.

Compositions, methods, and kits for synthesizing, detecting, and/or quantifying nucleic acids are provided herein. Embodiments comprise a nucleic acid amplification composition comprising a thermostable DNA polymerase and agents which improve nucleic acid synthesis, amplification, detection, and/or quantification of nucleic acid targets in a crude extract or crude lysate sample.

A defoamer composition based on organofunctionally modified polysiloxanes contains one or more laterally polyether-modified polysiloxanes as component A and at least one terminally polyether-modified polysiloxane as component B.

Provided is a defoaming agent for a liquid detergent, comprising the following components: component A1, a modified polyorganosiloxane formed by reacting a hydrogen-containing polyorganosiloxane, an unsaturated polyether and an α-olefin; component A2, a modified polyorganosiloxane formed by reacting a hydrogen-containing polyorganosiloxane, an unsaturated polyether and a bivinyl-terminated polyorganosiloxane; component B, an organosilicon composition composed of a hydrogen-containing polyorganosiloxane, a polymer composed of an acrylate and an α-olefin, silica and an organosilicon resin; component C, a thickening agent; and component ID, water. An excellent compatibility between the modified polyorganosiloxanes A1 and A2 enables the defoaming agent to exhibit an excellent defoaming performance, stability and clarity in a laundry detergent.

The present application relates to cleaning and treatment compositions comprising a material that reduces foam and methods of making and using such material and compositions. Such compositions comprise benefit agents that typically impact the performance of antifoams yet in the present compositions antifoaming properties of antifoams are maintained.

SiOC-bonded polyether siloxanes are produced by transesterification of alkoxysiloxanes with polyetherols in the presence of trifluoromethanesulfonate as catalyst. The computational total water content of the reactants including alkoxysiloxanes and polyetherols is ≤5000 ppm by mass, advantageously ≤300 ppm by mass, preferably ≤150 ppm by mass, more preferably ≤100 ppm by mass, in particular ≤50 ppm by mass. The determination of the individual water contents is performed beforehand, preferably by titration according to Karl Fischer.

The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.

The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.