Claims
- 1. A method of producing an aminofunctional alkoxy polysiloxane comprising:
reacting a polyhydrosiloxane with an alcohol reactant in the presence of a dehydrogenative coupling catalyst to form an aminofunctional alkoxy polysiloxane; wherein the alcohol reactant includes an aminoalcohol.
- 2. The method of claim 1 wherein the dehydrogenative coupling catalyst includes a rhodium compound.
- 3. The method of claim 2 wherein the dehydrogenative coupling catalyst includes a rhodium(I) compound.
- 4. The method of claim 3 wherein the dehydrogenative coupling catalyst includes ((C6H5)3P)3RhCl.
- 5. The method of claim 1 wherein the dehydrogenative coupling catalyst includes a Pd, Cu Mn, Ni, Rh and Ru species or a mixture thereof.
- 6. The method of claim 1 wherein the polyhydrosiloxane is reacted with the aminoalcohol in a solvent which includes a hydrocarbon solvent, a halogenated hydrocarbon solvent, an ether or a mixture thereof.
- 7. The method of claim 1 wherein the polyhydrosiloxane is reacted with the aminoalcohol under substantially anhydrous conditions.
- 8. The method of claim 1 wherein the polyhydrosiloxane is reacted with the aminoalcohol under substantially deoxygenated conditions.
- 9. The method of claim 1 wherein the polyhydrosiloxane is reacted with the aminoalcohol at a temperature of about 0° C. to 200° C.
- 10. The method of claim 1 comprising reacting a cyclic polyhydrosiloxane with the aminoalcohol to form a cyclic aminofunctional alkoxy polysiloxane.
- 11. The method of claim 1 comprising reacting a linear polyhydrosiloxane with the aminoalcohol to form a linear aminofunctional alkoxy polysiloxane.
- 12. The method of claim 1 wherein the aminoalcohol includes a polyaminofunctional alcohol.
- 13. A linear aminofunctional alkoxy polysiloxane having the formula:
- 14. The polysiloxane of claim 13 wherein R1, R2 and R3 are independently lower alkyl.
- 15. The polysiloxane of claim 13 wherein R4 is methyl.
- 16. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes an aliphatic amino group.
- 17. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes a cycloaliphatic amino group.
- 18. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes a primary amino group.
- 19. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes a secondary amino group.
- 20. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes a tertiary amino group.
- 21. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes an aromatic amino group.
- 22. The polysiloxane of claim 21 wherein the aromatic amino group is a pyridyl group, a pyrimidyl group or a pyrazinyl group.
- 23. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes an aminophenyl group.
- 24. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes a piperidinyl group. a piperazinyl group, or a pyrrolidinyl group.
- 25. The polysiloxane of claim 13 wherein the aminofunctional alkoxy group includes at least two amino groups.
- 26. A cyclic aminofunctional alkoxy polysiloxane having the formula:
- 27. A coating composition comprising an aminofunctional alkoxy polysiloxane.
- 28. The coating composition of claim 27 wherein the polysiloxane includes a compound of the formula:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0001] The U.S. Government has a paid-up license in the present invention and the right (in limited circumstances) to require the patent owner to license others on reasonable terms as provided for by the terms of Grant Nos. F49620-96-1-0360 and F49620-99-0283 awarded by the Air Force Office of Scientific Research and Grant No. 9874802 awarded by the National Science Foundation.