Claims
- 1. A polymer having the following general formula:
- 2. The polymer according to claim 1, wherein n is zero and X and Y are identical and are end-caps of the polymer.
- 3. The polymer according to claim 1, wherein X, Y, and Z have at least two sites capable of H-donor capability and at least two sites capable of H-acceptor capability.
- 4. The polymer according to claim 2, wherein the X and Y have at least two sites capable of H-donor capability and at least two sites capable of H-acceptor capability.
- 5. The polymer according to claim 3, wherein the H-donor site is selected in the group consisting of —NH—, —OH or —SH groups.
- 6. The polymer according to claim 4, wherein the H-donor site is selected in the group consisting of —NH—, —OH or —SH groups.
- 7. The polymer according to claim 3, wherein the H-acceptor site comprises a O, N or S atom.
- 8. The polymer according to claim 1, wherein X, Y, and Z include the group —NH—CO—NH—.
- 9. The polymer according to claim 1, wherein X and Y are obtained by the reaction of a terminal isocyanate group with a compound of formula H2N-R1R2, where R1 and R2 are each independently a C1-C6 alkyl or C3-C6 cycloalkyl group, or together can form a ring having one or two cycle(s), one or both of R1 and R2 being optionally interrupted by one or more heteroatom(s) selected from N, O and S.
- 10. The polymer according to claim 1, wherein X and Y are obtained by the reaction of a terminal isocyanate group with a compound of formula H2N—C(R3)═N—R4, where R3 and R4 are each independently a C1-C6 alkyl or C3-C6 cycloalkyl group, or together can form a ring having one or two cycle(s), one or both of R3 and R4 being optionally interrupted by one or more heteroatom(s) selected from N, O and S.
- 11. The polymer according to claim 1, wherein X and Y are obtained by the reaction of a terminal isocyanate group with a compound of formula:
- 12. The polymer according to claim 1, wherein X and Y are obtained by the reaction of a terminal isocyanate group with a compound having a molecular weight of less than 400.
- 13. The polymer according to claim 1, wherein X and Y are obtained by the reaction of a terminal isocyanate group with a compound selected from the group consisting of 2-aminopyrimidine, isocytosine, 6-alkylisocytosine preferably 6-methylisocytosine, 2-aminopyridine, 5-amino-uracil 6-tridecylisocytosine, 6-phenyl-isocytosine, 2-amino-6-(3-butenyl)-4-pyrimidone, p-di-(2-amino-6-ethyl-4-pyrimidone) benzene, 2-amino 4-pyridone, 4-pyrimidone 6-methyl-2-amino-4-pyrimidone, 6-ethyl-2-amino-4-pyrimidone, 6-phenyl-2amino-4-pyrimidone, 6-(p-nitrophenyl)isocytosine, 6-(trifluoromethyl) isocytosine, and mixtures thereof.
- 14. The polymer according to claim 1, wherein X and Y are obtained by the reaction of a terminal isocyanate group with 2-aminopyrimidine or 6-alkylisocytosine.
- 15. The polymer according to claim 1, wherein X and Y, and optionally Z, are from 0.5 to 20% of the weight of the polymer.
- 16. The polymer according to claim 1, wherein PU is a thermoplastic polyurethane, an elastomeric polyurethane, or mixtures thereof.
- 17. The polymer according to claim 16, wherein PU comprises at least one soft chain segment and at least two hard chain segments.
- 18. The polymer according to claim 1, wherein PU has an average molecular weight of 2000 to 15000.
- 19. A supramolecular polymer comprising units that form H-bonds with one another, wherein at least one of these units is a polymer having the following general formula:
- 20. A process for the preparation of a polymer having the following general formula:
- 21. The process according to claim 20, comprising reacting a polyisocyanate (1) with a functionality of 2, a polyol (2) having a MW from 750 to 6000 and a functionality from 1.8 to 2.2, a polyol (3) having a MW from 62 to 750 with a functionality of 1.9 to 2.1 and an amine compound (4) of formula H2N—C(R3)═N—R4, where R3 and R4 are each independently a C1-C6 alkyl or C3-C6 cycloalkyl group, or together can form a ring having one or two cycle(s), all being optionally interrupted by one or more heteroatom(s) selected from N, O and S, with a MW less than 400 wherein the amount of isocyanate (1), polyol (2), polyol (3) and amine (4) is 10-50, 35-90, 1-30 and 0.5-20 by weight respectively per 100 parts by weight of isocyanate (1), polyol (2), polyol (3) and amine (4) wherein the reaction is conducted at an isocyanate index of 90 to 200.
Priority Claims (1)
Number |
Date |
Country |
Kind |
00126685.7 |
Dec 2000 |
EP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of international application PCT EP01/14082, filed Dec. 3, 2001.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP01/14082 |
Dec 2001 |
US |
Child |
10444612 |
May 2003 |
US |