Title:
PROCESS FOR THE ENZYMATIC DEGRADATION OF POLYURETHANES
Document Type and Number:
WIPO Patent Application WO/2013/134801
Kind Code:
A3
Abstract:
The invention relates to a process for degrading polyurethanes in which the starting material is coarsely comminuted, then slurried and admixed with an enzyme, the hydrolysis of the polyurethane into its starting polyols is carried out in a polar solvent or solvent mixture with cleavage of the carbamate bond by means of a class EC 3 hydrolase, where the polar solvent is partially removed from the system and regenerated in a separate process and/or a reaction product is separated off.
Inventors:
ENDER WOFGANG (AT)
WIESBAUER HERFRIED (AT)
BAUMGARTNER GUENTER (AT)
GUEBITZ GEORG (AT)
SCHNEIDER KONSTANTIN (AT)
GEWESSLER ULRIKE (AT)
WIESBAUER HERFRIED (AT)
BAUMGARTNER GUENTER (AT)
GUEBITZ GEORG (AT)
SCHNEIDER KONSTANTIN (AT)
GEWESSLER ULRIKE (AT)
Application Number:
PCT/AT2013/050047
Publication Date:
January 23, 2014
Filing Date:
February 27, 2013
Export Citation:
Assignee:
EUROFOAM GMBH (AT)
International Classes:
C08J11/10; C08J11/18
Domestic Patent References:
| WO1998036086A1 | 1998-08-20 | |||
| WO2007029630A1 | 2007-03-15 |
Other References:
CHRISTENSON E M ET AL: "Enzymatic degradation of poly(ether urethane) and poly(carbonate urethane) by cholesterol esterase", BIOMATERIALS, ELSEVIER SCIENCE PUBLISHERS BV., BARKING, GB, vol. 27, no. 21, 1 July 2006 (2006-07-01), pages 3920 - 3926, XP027951334, ISSN: 0142-9612, [retrieved on 20060701]
Attorney, Agent or Firm:
BURGSTALLER, Peter (Linz, AT)
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