Foam control composition
A foam control composition includes a component (A) and a component (B). Component (A) includes units of the formula [SiO 4/2 ] a [(R 1 O)SiO 3/2 ] b [(R 2 O)SiO 3/2 ] b ′[(R 1 O) 2 SiO 2/2 ] c [(R 1 O)(R 2 O)SiO 2/2 ] c ′[(R 2 O) 2 SiO 2/2 ] c ″[(R 1 O) 3 SiO 1/2 ] d [(R 1 O) 2 (R 2 O)SiO 1/2 ] d ′[(R 1 O)(R 2 O) 2 SiO 1/2 ] d ″[(R 2 O) 3 SiO 1/2 ] d ′″. Component (B) comprises a filler.
1 . A foam control composition, comprising:
a component (A) comprising units of the formula [SiO 4/2 ] a [(R 1 O)SiO 3/2 ] b [(R 2 O)SiO 3/2 ] b ′[(R 1 O) 2 SiO 2/2 ] c [(R 1 O)(R 2 O)SiO 2/2 ] c ′[(R 2 O) 2 SiO 2/2 ] c ″[(R 1 O) 3 SiO 1/2 ] d [(R 1 O) 2 (R 2 O)SiO 1/2 ] d ′[(R 1 O)(R 2 O) 2 SiO 1/2 ] d ″[(R 2 O) 3 SiO 1/2 ] d ′″ in which
R 1 is a substituted or unsubstituted, linear or branched, hydrocarbon radical having 6 to 40 carbon atoms,
R 2 is a hydrogen or a saturated or unsaturated radical having 1 to 12 carbon atoms, wherein the subscripts a, b, b′, c, c′, c″, d, d′, d″, and d′″ each have a value in a range of 0 to 100,000 subject to the limitation that a+b+b′+c+c′+c″+d+d′+d″+d′″ is equal to 2 or more and that component (A) comprises R 2 radicals in a range of 0.1-20 mol % based on a sum of all R 1 and R 2 radicals in component (A); and
a component (B) comprising a filler.
2 . The composition of claim 1 , further comprising a component (C), component (C) being a resin that comprises M units and Q units, wherein at least one M unit is of a formula (R 3 ) 3 SiO 1/2 and at least one Q unit is of a formula SiO 2 , wherein R 3 is a hydrogen atom, a saturated or unsaturated group having 1 to 40 carbon atoms, or a saturated or unsaturated group having 6 to 40 carbon atoms and at least one alkyl group single bonded to an oxygen atom.
3 . The composition of claim 1 , further comprising a component (D) including one or more water-insoluble organic compounds.
4 . The composition of claim 1 , wherein the composition exhibits a viscosity of 1-30,000 mPa·s at 25° C. and 1014.25 hPa and a density of 0.9-1.20 g/mL.
5 . The composition of claim 1 , wherein the filler comprises an oxide of silicon, a metal oxide, or a mixture thereof.
6 . The composition of claim 1 , wherein component (A) is a hydrophobic fluid that exhibits a surface tension of from 26-45 millinewtons per meter.
7 . The composition of claim 1 , wherein component (A) has a weight-average molecular weight in a range of from 250-20,000 daltons.
8 . The composition of claim 1 , wherein the composition comprises at least 85% by weight component (A).
9 . The composition of claim 1 , wherein the subscripts a, b, b′, c, c′, c″, d, d′, d″, and d′″ each have a value of 0 to 100.
10 . The composition of claim 1 , wherein a pair of adjacent carbon atoms of R 1 are interrupted by an oxygen or nitrogen atom.
11 . The composition of claim 1 , wherein component (A) comprises R 2 radicals in a range of 1 to 15 mol % based on a sum of all R 1 and R 2 radicals in component (A).
12 . The composition of claim 1 , wherein component (A) consists of units having silicon atoms chemically bonded to four oxygen atoms.
13 . The composition of claim 1 , wherein R 2 is selected from the group consisting of hydrogen, methyl, and ethyl radicals.
14 . The composition of claim 13 , wherein R 2 comprises hydrogen radicals in an amount of 5 mol % or less based on the sum of all R 1 and R 2 radicals.
15 . An aqueous detergent comprising:
a composition of claim 1 ; and
a surfactant system, wherein the surfactant system includes at least one surfactant.