EP 4179141 A1 20230517 - RESIN-IMPREGNATED FIBROUS MATERIAL IN THE FORM OF A SHEET OR A WEB
Title (en)
RESIN-IMPREGNATED FIBROUS MATERIAL IN THE FORM OF A SHEET OR A WEB
Title (de)
HARZIMPRÄGNIERTES FASERMATERIAL IN FORM EINER FOLIE ODER EINER BAHN
Title (fr)
MATÉRIAU FIBREUX IMPRÉGNÉ DE RÉSINE SOUS FORME DE FEUILLE OU DE BANDE
Publication
Application
Priority
- EP 20185316 A 20200710
- EP 2021069023 W 20210708
Abstract (en)
[origin: WO2022008671A1] The present invention relates to sheets or webs of a resin-impregnated fibrous material, comprising an impregnating resin, which comprises a combination of a) at least one resin component A, which is selected from the group consisting of aminoplast resins and phenoplast resins and mixtures thereof; and b) at least one resin component B, which is an oligomer or polymer having ethylenically unsaturated double bonds, wherein at least 40 mol-%, in particular at least 60 mol-%, especially at least 80 mol-% or 100 mol-% of the ethylenically unsaturated double bonds are selected from the group consisting of allyl groups, acryl groups and methacryl groups. The invention also relates to a process for producing a resin-impregnated fibrous material as claimed in any one of the preceding claims, which comprises impregnating a fibrous material in the form sheet or a web with a liquid resin composition comprising a combination of a) the resin component A, preferably in the form of a pre-condensate; and b) the resin component B as defined herein.
IPC 8 full level
D21H 17/37 (2006.01); D21H 17/48 (2006.01); D21H 17/51 (2006.01); D21H 17/57 (2006.01); D21H 21/16 (2006.01)
CPC (source: EP US)
D21H 17/37 (2013.01 - EP US); D21H 17/48 (2013.01 - EP US); D21H 17/51 (2013.01 - EP US); D21H 17/57 (2013.01 - EP); D21H 21/16 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022008671 A1 20220113; BR 112023000209 A2 20230131; CN 115768946 A 20230307; EP 4179141 A1 20230517; US 2023279613 A1 20230907
DOCDB simple family (application)
EP 2021069023 W 20210708; BR 112023000209 A 20210708; CN 202180048185 A 20210708; EP 21740512 A 20210708; US 202118004751 A 20210708