TCB BASED HYDROPHILIC POLYURETHANE DISPERSIONS

• US 20110160310A1
• Filed: 08/22/2009
• Published: 06/30/2011
• Est. Priority Date: 09/04/2008
• Status: Abandoned Application

• Current Assignee: Bayer Materialscience AG (Covestro AG)
• Original Assignee: Bayer Materialscience AG (Covestro AG)
• Inventors: Köcher, Jürgen, Wamprecht, Christian
• Application Number:
  US13/061,338
• Publication Number:
  US 20110160310A1
• Time in Patent Office: Days
• US Class Current: 514/772.3
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: A61L 33/068 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L33/062 takes precedence
• CPC Class Codes: A61P 7/02 Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
• CPC Class Codes: C08G 18/12 using two or more compounds having active hydrogen in the first polymerisation step
• CPC Class Codes: C08G 18/283 Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
• CPC Class Codes: C08G 18/3212 containing cycloaliphatic groups
• CPC Class Codes: C08G 18/3228 acyclic
• CPC Class Codes: C08G 18/44 Polycarbonates
• CPC Class Codes: C08G 18/664 with compounds of group C08G18/3203
• CPC Class Codes: C08G 18/755 and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
• CPC Class Codes: C08G 18/758 containing two or more cycloaliphatic rings
• CPC Class Codes: C08J 2375/04 Polyurethanes
• CPC Class Codes: C08J 2375/08 from polyethers
• CPC Class Codes: C08J 3/07 from polymer solutions
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C09D 175/06 from polyesters

Abstract

The present invention relates to a polyurethaneurea dispersion including a polyurethaneurea which is terminated with at least one polyethylene oxide- and polypropylene oxide-based copolymer unit, and includes a polycarbonate polyol-based unit of formula (I)

Claims

1-13. -13. (canceled)

14. A polyurethaneurea dispersion comprising a polyurethaneurea which is terminated with at least one polyethylene oxide- and polypropylene oxide-based copolymer unit, and comprises a polycarbonate polyol-based unit of formula (I)

15. The polyurethaneurea dispersion according to claim 14, wherein the polyurethaneurea is free from ionic or ionogenic groups.

16. The polyurethaneurea dispersion according to claim 14, wherein the polyurethaneurea is based on a polycarbonate polyol component.

17. The polyurethaneurea dispersion according to claim 16, wherein the polycarbonate polyol component has an average hydroxyl functionality of 1.7 to 2.3.

18. The polyurethaneurea dispersion according to claim 17, wherein the polycarbonate polyol component comprises a first polycarbonate polyol which is obtained by reacting a carbonic acid derivative with a difunctional alcohol of the formula (II)

19. The polyurethaneurea dispersions according to claim 18, wherein the polycarbonate polyol component further comprises a second polycarbonate polyol.

20. The polyurethaneurea dispersion according to claim 19, wherein the second polycarbonate polyol is a compound having an average hydroxyl functionality of 1.7 to 2.3 and a molecular weight, as determined through the OH number, of 400 to 6000 g/mol, based on hexane-1,6-diol, butane-1,4-diol, or mixtures thereof.

21. The polyurethaneurea dispersion according to claim 20, wherein the polyurethaneurea is free from ionic or ionogenic groups.

22. The polyurethaneurea dispersion according to claim 14, wherein the copolymer unit of polyethylene oxide and polypropylene oxide is based on a monohydroxy-functional mixed polyalkylene oxide polyether comprising at least 40 mol % ethylene oxide units and not more than 60 mol % propylene oxide units, based on the total fraction of alkylene oxide units, and wherein the monohydroxy-functional mixed polyalkylene oxide polyether has a number-average molecular weight of 500 to 5000 g/mol.

23. The polyurethaneurea dispersion according to claim 14, wherein the polyurethaneurea has a number-average molecular weight of 5000 to 100,000 g/mol as measured in dimethylacetamide at 30°

C.

24. The polyurethaneurea dispersion according to claim 14, wherein the polyurethaneurea dispersion further comprises a pharmacological active compound.

25. The polyurethaneurea dispersion according to claim 21,

wherein the polyurethaneurea dispersion further comprises a pharmacological active compound;

wherein the copolymer unit of polyethylene oxide and polypropylene oxide is based on a monohydroxy-functional mixed polyalkylene oxide polyether comprising at least 40 mol % ethylene oxide units and not more than 60 mol % propylene oxide units, based on the total fraction of alkylene oxide units, and wherein the monohydroxy-functional mixed polyalkylene oxide polyether has a number-average molecular weight of 500 to 5000 g/mol; and

wherein the polyurethaneurea has a number-average molecular weight of 5000 to 100,000 g/mol as measured in dimethylacetamide at 30°

C.

26. A process for preparing the polyurethaneurea dispersion according to claim 14, which comprises

a. reacting a composition comprising

i. a polycarbonate polyol component,

ii. at least one polyisocyanate component,

iii. at least one polyoxyalkylene ether component,

iv. at least one diamine and/or amino alcohol component, and

v. optionally, a further polyol component;

and

b. dispersing the composition in water.

27. A polyurethaneurea obtained from the polyurethaneurea dispersion according to claim 14.

28. A coating obtained with the polyurethaneurea according to claim 27.

29. A substrate coated with the coating according to claim 28.