Functionalized silicones with polyalkylene oxide side chains
Novel silicone polymers are provided which possess grafted pendant hydrophilic polyalkylene oxide side chains and, optionally, reactive functional end groups. These features make them well suited for use in chemical, marine, biomedical and industrial applications, particularly those involving surface modifications.
1. A polymer comprising
a polysiloxane backbone; and
a plurality of hydrophilic polymeric pendant side chains linked to the polysiloxane backbone through a thioether linkage.
2. The polymer of claim 1 wherein the polysiloxane backbone comprises a reactive functional end group at one or both ends.
3. The polymer of claim 2 wherein the reactive functional end group comprises an alkyl amine.
4. The polymer of claim 2 wherein the polysiloxane backbone comprises polydimethylsiloxane.
5. The polymer of claim 2 wherein the polysiloxane backbone comprises a copolymer comprising siloxane and lactone.
6. The polymer of claim 2 wherein hydrophilic polymeric pendant side chains comprise polyalkylene glycol.
7. The polymer of claim 6 wherein the polyalkylene glycol comprises polyethylene glycol.
8. The polymer of claim 2 which is prepared by the process of reacting a polyvinylsiloxane with a hydrophilic polymeric monothiol.
9. A polyurethane comprising the polymer of claim 2 .
10. A composition, coating, film, adhesive, gel, oil or lubricant comprising the polymer of claim 2 .
11. An article comprising the composition, coating, film, adhesive, gel, oil or lubricant of claim 10 .
12. An article comprising a surface coated with the polymer of claim 2 .
13. A polymer comprising
a polysiloxane backbone comprising a reactive functional end group at one or both ends; and
a plurality of hydrophilic polymeric pendant side chains;
wherein the polysiloxane backbone comprises a copolymer comprising siloxane and lactone.
14. The polymer of claim 13 wherein the reactive functional end group comprises an alkyl amine.
15. The polymer of claim 13 wherein hydrophilic polymeric pendant side chains comprise polyalkylene glycol.
16. The polymer of claim 15 wherein the polyalkylene glycol comprises polyethylene glycol.
17. A composition, coating, film, adhesive, gel, oil or lubricant comprising the polymer of claim 13 .
18. An article comprising the composition, coating, film, adhesive, gel, oil or lubricant of claim 17 .
19. An article comprising a surface coated with the polymer of claim 13 .
20. A polymer comprising
a polysiloxane backbone comprising a reactive functional end group at one or both ends; and
a plurality of hydrophilic polymeric pendant side chains;
which is prepared by the process of reacting a polyvinylsiloxane with a hydrophilic polymeric monothiol.
21. A polyurethane comprising a polymer comprising:
a polysiloxane backbone comprising a reactive functional end group at one or both ends; and
a plurality of hydrophilic polymeric pendant side chains.
22. A method for making an amphiphilic polymer, the method comprising combining a hydrophilic polymeric monothiol reactant and a polyvinylsiloxane reactant in the presence of a catalyst for a time and under conditions to yield an amphiphilic polymer comprising a polysiloxane backbone and a plurality of hydrophilic polymeric pendant side chains.
23. The method of claim 22 wherein the monothiol is supplied in molar excess.
24. The method of claim 22 wherein the polyvinylsiloxane reactant is a linear polyvinylsiloxane comprising a reactive functional group at one or both ends.
25. An amphiphilic polymer prepared by the method of claim 22 .