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US 2026/0275043 A1Published application
Silicone - polyether copolymer and method for synthesis thereof
OwnerSudhakar Balijepalli, Eric Joffreinventors
Life of this patent
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Abstract
A silicone-polyether copolymer and methods for its preparation and use are disclosed. The silicone-polyether copolymer is useful in various applications including hair care compositions due to having a refractive index >1.46.
Claims17
A silicone-polyether copolymer comprising unit formula:
- (R13SiO1/2)a(R12SiO2/2)b(R1R2SiO2/2)c(R12R2SiO1/2)d(R1SiO3/2)e(R2SiO3/2)(SiO4/2)g, where
- subscripts a, b, c, d, e, f, and g represent average numbers of each unit in the unit formula and have values such that
- a≥0;
- d≥0;
- a quantity (a+d)≥2;
- b≥0;
- c≥1;
- e≥0;
- f≥0;
- a quantity (c+d+f)≥1;
- g≥0;
- a quantity (a+b+c+d+e+f+g)=2 to 10,000;
- each R1 is an independently selected alkyl group of 1 to 12 carbon atoms;
- and
- each R2 is independently selected from the group consisting of H, formula E1′), formula D1′), and formula A1′), where
- formula E1′) is
- where R1 is as described above, subscript m is 0 or 1, and each R6 is a divalent hydrocarbon group;
- formula D1′) is
- where
- each R is independently selected from the group consisting of H, a halogen atom, OH, methyl, and methoxy;
- D′ is a covalent bond, a group of formula —CH2—, or a group of formula —CH2—O—;
- and
- R″ is H or methyl;
- and
- formula A1′) is
- where
- X is H or methyl,
- D has empirical formula —C2H4— or —C3H6—,
- each R3 is independently selected from H, a halogen atom, OH, methyl, and methoxy;
- and
- subscript n is 1, 2, or 3;
- and
- with the proviso that at least one R2 per molecule has formula A1′), and
- with the proviso that >0 mol % to 95 mol % of all instances of R2 per molecule have formula D1′).
31 more elements
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A foam control composition comprising:
- a silicone-polyether copolymer comprising unit formula:
- (R13SiO1/2)a(R12SiO2/2)b(R1R2SiO2/2)c(R12R2SiO1/2)d(R1SiO3/2)e(R2SiO3/2)(SiO4/2)g, where
- subscripts a, b, c, d, e, f, and g represent average numbers of each unit in the unit formula and have values such that
- a≥0;
- d≥0;
- a quantity (a+d)≥2;
- b≥0;
- c≥1;
- e≥0;
- f≥0;
- a quantity (c+d+f)≥1;
- g≥0;
- a quantity (a+b+c+d+e+f+g)=2 to 10,000;
- each R1 is an independently selected alkyl group of 1 to 12 carbon atoms;
- and
- each R2 is independently selected from the group consisting of H, formula E1′), formula D1′), and formula A1′), where
- formula E1′) is
- where R1 is as described above, subscript m is 0 or 1, and each R6 is a divalent hydrocarbon group;
- formula D1′) is
- where
- each R is independently selected from the group consisting of H, a halogen atom, OH, methyl, and methoxy;
- D′ is a covalent bond, a group of formula —CH2—, or a group of formula —CH2—O—;
- and
- R″ is H or methyl;
- and
- formula A1′) is
- where
- X is H or methyl,
- D has empirical formula —C2H4— or —C3H6—,
- each R3 is independently selected from H, a halogen atom, OH, methyl, and methoxy;
- and
- subscript n is 1, 2, or 3;
- and
- with the proviso that at least one R2 per molecule has formula A1′);
- and
- an additional starting material selected from the group consisting of an MQ resin, a silica filler, and a combination of both the MQ resin and the silica filler.
33 more elements
Dependencies are inferred from the claim text.