Silicone block copolymer having an aminofunctional endblocking group and method for its preparation and use
A silicone block copolymer having an aminofunctional endblocking group is useful in personal care applications, particularly hair care. A process for making the silicone block copolymer is also described.
1. A silicone block copolymer having an aminofunctional endblocking group, or a quat thereof, has average formula:
where
each subscript x is independently >0,
each subscript y is independently >0,
subscript n is ≥1,
each R 1 is independently a divalent organic group free of polyoxyalkylene, and
each R 2 is independently a monovalent hydrocarbon group or a monovalent halogenated hydrocarbon group;
at least one E is an aminofunctional endblocking group or a quat thereof, or both instances of E are aminofunctional endblocking groups or quats thereof, where the aminofunctional endblocking group has a formula selected from
where
subscript q is ≥0,
subscript r is >0,
subscript s is ≥0, and
R 3 is independently H, alkyl, or a group of formula
each R 25 is independently H or OH and
each R 23 is independently an alkyl group or a hydroxyalkyl group,
with the proviso that when only one instance of E is aminofunctional, then the other instance of E is a monovalent organic group selected from the group consisting of a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, or a polyoxyalkylene group.
2. The silicone block copolymer of claim 1 , where one instance of E is the aminofunctional endblocking group or a quat thereof, and another instance of E is a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, or a polyoxyalkylene group.
3. An emulsion comprising:
(1) the silicone block copolymer of claim 1 ,
(2) water, and
(3) a surfactant.
4. A method for treating a substrate selected from textiles and leather comprising:
(A) applying to the substrate, a treatment composition comprising the silicone block copolymer of claim 1 , and
(B) drying the substrate.
5. A personal care composition comprising:
(1) the silicone block copolymer of claim 1 , and
(2) a carrier that permits application.
6. A shampoo comprising:
(1) the silicone block copolymer of claim 1 ,
(2) water, and
(3) an anionic surfactant and/or an amphoteric surfactant,
optionally (4) a preservative, and
optionally (5) a cationic deposition polymer, and
optionally (6) a thickener.
7. A hair conditioner comprising:
(A) the silicone block copolymer of claim 1 ,
(B) water,
optionally (C) a thickener,
(D) a fatty alcohol,
optionally (E) other emulsifiers,
optionally (F) a preservative, and
optionally (G) a cationic deposition polymer.
8. An emulsion comprising:
(1) the silicone block copolymer of claim 2 ,
(2) water, and
(3) a surfactant.
9. A method for treating a substrate selected from textiles and leather comprising:
(A) applying to the substrate, a treatment composition comprising the silicone block copolymer of claim 2 , and
(B) drying the substrate.
10. A method for treating a substrate selected from textiles and leather comprising:
(A) applying to the substrate, a treatment composition comprising the emulsion of claim 3 , and
(B) drying the substrate.
11. A personal care composition comprising:
(1) the emulsion of claim 3 , and
(2) a carrier that permits application.
12. A shampoo comprising:
(1) the emulsion of claim 3 ,
(2) water, and
(3) an anionic surfactant and/or an amphoteric surfactant,
optionally (4) a preservative, and
optionally (5) a cationic deposition polymer, and
optionally (6) a thickener.
13. A hair conditioner comprising:
(A) the emulsion of claim 3 ,
(B) water,
optionally (C) a thickener,
(D) a fatty alcohol,
optionally (E) other emulsifiers,
optionally (F) a preservative, and
optionally (G) a cationic deposition polymer.