Title:
PROCESS FOR PRODUCING POLYMER FOAMS
Document Type and Number:
WIPO Patent Application WO/2014/102708
Kind Code:
A3
Abstract:
Process for the production of a polymer foam with use of hydrogel pearls as porosity generating template, comprising the steps of: - providing a matrix of polymer or prepolymer in viscous state including, as a dispersed phase, hydrogel pearls, where said pearls are dispersed in said matrix so as to generate intercommunicating cells, - causing the solidification of the matrix of polymer or prepolymer to obtain said polymer foam including said hydrogel pearls, characterised in that it comprises the operation of subjecting the thus obtained foam to conditions which cause the dehydration of said hydrogel pearls so as to obtain a reduction of volume of said pearls and - removing the dehydrated pearls by immersion in water of the polymer foam or by exposure of the foam to a flow of pressurized gas or water.
Inventors:
FRAGOULI DESPINA (IT)
MELE ELISA (IT)
ATHANASIOU ATHANASIA (IT)
MELE ELISA (IT)
ATHANASIOU ATHANASIA (IT)
Application Number:
PCT/IB2013/061278
Publication Date:
March 05, 2015
Filing Date:
December 23, 2013
Export Citation:
Assignee:
FOND ISTITUTO ITALIANO DI TECNOLOGIA (IT)
International Classes:
C08J9/00; A61L27/48; A61L27/56; C08J9/26
Foreign References:
| EP2179751A1 | 2010-04-28 |
Other References:
ALICE A TOMEI ET AL: "3D Collagen cultures under well-defined dynamic strain: A novel strain device with porous elastomeric support", BIOTECHNOLOGY AND BIOENGENEERING, vol. 103, no. 1, 16 December 2008 (2008-12-16), pages 212 - 225, XP055076525
Attorney, Agent or Firm:
RAMBELLI, Paolo et al. (Corso Emilia 8, Torino, IT)
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