Polysiloxane block copolymers

• US 20080199418A1
• Filed: 01/31/2008
• Published: 08/21/2008
• Est. Priority Date: 02/06/2007
• Status: Abandoned Application

• Current Assignee: BASF SE, CIBA Vision Corporation (Bayer AG)
• Original Assignee: BASF SE
• Inventors: Mao, Jianwen, Koroskenyi, Balint, Gamez-Garcia, Manuel
• Application Number:
  US12/012,063
• Publication Number:
  US 20080199418A1
• Time in Patent Office: Days
• US Class Current: 424/70.12
• CPC Class Codes: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

This invention encompasses novel amphiphilic block copolymers comprising polysiloxane blocks and polycationic blocks. The polycationic blocks are formed from diallyldialkylammonium derivatives. The formed block copolymers are particularly useful for treating or conditioning keratinous substances such as hair or skin.

Claims

1. An amphiphilic block copolymer comprising at least

a) siloxane polymer block of formula (I)

2. An amphiphilic block copolymer according to claim 1, wherein the siloxane polymer block is a polymer of formula (I)

3. An amphiphilic block copolymer according to claim 1, wherein the cationic monomer of formula II is selected form the group of monomers consisting of diallyldimethylammonium chloride (DADMAC), diallyidiethylammonium chloride, diallyldimethylammonium bromide, diallyldimethylammonium sulfate, diallydimethylammonium phosphate, diallyidi(beta-ethoxyethyl)ammonium chloride and diallyidi(beta-hydroxyethyl)ammonium chloride.

4. An amphiphilic block copolymer according to claim 1, wherein the cationic polymer block is formed from at least a cationic monomer of formula (II) and a second cationic monomer selected from the group consisting of ammonium or quaternary salts of dialkyl amino alkyl (meth)acrylates and dialkyl amino alkyl (meth)acrylamides.

5. An amphiphilic block copolymer according to claim 4, wherein the second cationic monomer is dimethylaminoethyl acrylate methyl chloride quaternary salt, dimethylaminoethyl acrylate methyl sulfate quaternary salt, dimethyaminoethyl acrylate benzyl chloride quaternary salt, dimethylaminoethyl acrylate sulfuric acid salt, dimethylaminoethyl acrylate hydrochloric acid salt, dimethylaminoethyl methacrylate methyl chloride quaternary salt, dimethylaminoethyl methacrylate methyl sulfate quaternary salt, dimethylaminoethyl methacrylate benzyl chloride quaternary salt, dimethylaminoethyl methacrylate sulfuric acid salt, dimethylaminoethyl methacrylate hydrochloric acid salt, diethylaminoethyl acrylate, diethylaminoethyl acrylate methyl chloride quaternary salt, diethylaminoethyl methacrylate, diethylaminoethyl methacrylate methyl chloride quaternary salt, methacrylamidopropyltrimethylammonium chloride, acrylamidopropyltrimethylammonium chloride, dimethylaminopropylacrylamide methyl sulfate quaternary salt, dimethylaminopropylacrylamide sulfuric acid salt or dimethylaminopropylacrylamide hydrochloric acid salt.

6. An amphiphilic block copolymer according to claim 1, wherein Y⁻

is selected from the group of anions consisting of chloride, bromide, iodide, substituted or unsubstituted aryl sulfonates, sulfate, alkyl sulfonates such as methyl sulfonate, ethyl sulfonate, carboxylates, nitrate, phosphates, tetrafluoroborate, tetraalkylborate, tetraarylborate, perchlorate, and hexafluorophosphate.

7. An amphiphilic block copolymer according to claim 1, wherein the amphiphilic block copolymer is linear, grafted, star or comb block copolymer.

8. An amphiphilic block copolymer according to claim 1, wherein the amphiphilic block copolymer is a diblock or triblock amphiphilic block copolymer.

9. An amphiphilic block copolymer according to claim 1, wherein the amphiphilic block copolymer is water soluble or water dispersible.

10. An amphiphilic block copolymer according to claim 1, wherein the weight ratio of the siloxane polymer block to cationic polymer block varies from about 1:

100 to about 100;

1.

11. An amphiphilic block copolymer of formula III

12. The amphiphilic block copolymer according to claim 11, wherein the linking group contains sulfur.

13. The amphiphilic block copolymer according to claim 11 wherein formula (III) is

14. A hair conditioning shampoo composition comprising:

a) an amphiphilic block copolymer according to claim 1,

and

b) a detersive surfactant.

15. A hair conditioning shampoo composition according to claim 14, further comprising a starch.

16. A hair conditioning shampoo composition according to claim 15, wherein the starch is cationic.

17. The composition according to claim 14, wherein the detersive surfactant is nonionic, anionic, cationic, zwitterionic or any mixtures thereof.

18. The composition according to claim 14, wherein the surfactant is anionic.

19. Preparation of an amphiphilic block copolymer according to claim 1, said preparation comprising the steps of polymerizing the cationic monomer of formula (II)

20. A method of conditioning a keratinous substrate by applying the amphiphilic block copolymer according to claim 1 onto the substrate.