Claims
- 1. A process for the preparation of an aromatic bisoxazoline, wherein, in a first step, an aromatic carboxylic acid or an ester thereof reacts with an alkanolamine, after which the hydroxyalkylamide obtained is in a second step converted into an aromatic bisoxazoline in the presence of a catalyst.
- 2. A process according to claim 1, wherein the aromatic carboxylic acid or the ester hereof is terephthalic acid, isophthalic acid, di(C1-C4)alkyl terephthalate and/or di(C1-C4)alkyl isophthalate.
- 3. A process according to claim 2, wherein the aromatic carboxylic acid or the ester is dimethyl terephthalate or dimethyl isophthalate.
- 4. A process according to claim 1, wherein the alkanolamine is ethanolamine and/or isopropanolamine.
- 5. A process according to claim 1, wherein the catalyst is an acid catalyst or a basic catalyst.
- 6. A process according to claim 5, wherein the catalyst is phosphinic acid, a (C1-C26) alkyl phosphinic acid, a (C6-C20) aryl phosphinic acid or an ester or an anhydride derived from one of these acids.
- 7. A process according to claim 5, wherein the catalyst is a compound according to formula (II) or formula (III):
- 8. A process according to claim 7, wherein the catalyst is phenyl phosphinic acid.
- 9. A process according to claim 1, wherein the second step is carried out in the presence of propylene carbonate.
- 10. A powder paint binder composition comprising a polymer and a crosslinking agent, wherein the crosslinking agent is an aromatic bisoxazoline obtained with the process according to claim 1.
- 11. A powder paint composition comprising a binder composition according to claim 10.
- 12. A powder coating obtained after curing of a powder paint according to claim 11.
- 13. A polymer composition comprising an aromatic bisoxazoline obtained with the process according to claim 1.
- 14. The use of an aromatic bisoxazoline obtained with the process according to claim 1 as a chain extender.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1012572 |
Jul 1999 |
NL |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This is a Continuation of International Application No. PCT/NL00/00446 filed Jun. 27, 2000 which which designated the U.S. and was published in the English language. The contents of this PCT application are incorporated in their entirety by reference.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/NL00/00446 |
Jun 2000 |
US |
Child |
10041666 |
Jan 2002 |
US |