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Title:
Fast curing epoxy system for producing rigid foam and use of the foam in composites or as insulation material
Document Type and Number:
WIPO Patent Application WO/2020/037502
Kind Code:
A1
Abstract:
The present invention relates to a novel method for manufacturing rigid epoxy foams. Furthermore the present invention relates to materials, especially novel two-component epoxy systems that are used to conduct this method. This novel process is characterised in that an epoxy resin is mixed with a blowing agent, especially an encapsulated blowing agent, and afterwards with an ionic liquid. Surprisingly the reaction, including foaming, starts at room temperature after a short time like after only 2 to 3 minutes. In summary, the present invention comprises a two-component foam-in-place structural material and a process for producing a rigid epoxy foam.

Inventors:
SAJITZ MELANIE (CN)
ZHOU LIYIN (CN)
VOGEL MICHAEL (DE)
Application Number:
PCT/CN2018/101583
Publication Date:
February 27, 2020
Filing Date:
August 21, 2018
Export Citation:
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Assignee:
EVONIK OPERATIONS GMBH (DE)
EVONIK SPECIALTY CHEMICALS NANJING CO LTD (CN)
International Classes:
C08G59/50; C08G59/56; C08L63/00
Domestic Patent References:
WO2018000125A12018-01-04
WO2018000125A12018-01-04
Foreign References:
CN102858837A2013-01-02
CN103974993A2014-08-06
EP0291455A21988-11-17
CN201711268551A2017-12-05
US20060188726A12006-08-24
US20020187305A12002-12-12
US20050119372A12005-06-02
Other References:
H. LEEK. NEVILLE: "Handbook of Epoxy Resins", 1967, MCGRAW HILL, pages: 5 - 1,5-24
See also references of EP 3841145A4
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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