EP 4058288 A1 20220921 - ELECTRICAL STEEL STRIP OR SHEET, METHOD FOR PRODUCING SUCH AN ELECTRICAL STEEL STRIP OR SHEET, AND LAMINATED CORE MADE THEREFROM
Title (en)
ELECTRICAL STEEL STRIP OR SHEET, METHOD FOR PRODUCING SUCH AN ELECTRICAL STEEL STRIP OR SHEET, AND LAMINATED CORE MADE THEREFROM
Title (de)
ELEKTROBAND ODER -BLECH, VERFAHREN ZUR HERSTELLUNG SOLCH EINES ELEKTROBANDS ODER -BLECHS SOWIE BLECHPAKET DARAUS
Title (fr)
FEUILLE OU BANDE D'ACIER ÉLECTRIQUE, PROCÉDÉ DE FABRICATION D'UNE TELLE FEUILLE OU BANDE D'ACIER ÉLECTRIQUE, ET NOYAU LAMINÉ FABRIQUÉ À PARTIR DE CELLE-CI
Publication
Application
Priority
- EP 19209572 A 20191115
- EP 2020082309 W 20201116
Abstract (en)
[origin: WO2021094627A1] The invention relates to an electrical steel strip or sheet with a water-based thermosetting hot-melt adhesive coating layer which is provided on at least one flat face of said strip or sheet, to a method for producing such an electrical steel strip or sheet, and to a laminated core made therefrom. The aim of the invention is to produce a particularly storage-stable and aging-stable thermosetting hot-melt adhesive coating layer on the electrical steel strip or sheet in the B state. This is achieved in that the stoichiometric ratio of the epoxide groups of the epoxide resin or the epoxide resin to the hydrogen atoms of the at least two amino groups of the hardener, which is latent at room temperature, ranges from 1.33 to 1 up to 5 to 1.
IPC 8 full level
B32B 37/12 (2006.01); C08K 5/00 (2006.01); C08K 5/17 (2006.01); C08K 5/315 (2006.01); C09J 5/06 (2006.01); C09J 7/28 (2018.01); C09J 7/35 (2018.01); C09J 11/04 (2006.01)
CPC (source: EP US)
B32B 7/025 (2018.12 - US); B32B 7/12 (2013.01 - US); B32B 15/011 (2013.01 - US); B32B 37/1207 (2013.01 - US); C08K 5/0025 (2013.01 - EP); C08K 5/17 (2013.01 - EP); C08K 5/3155 (2013.01 - EP); C09J 5/02 (2013.01 - US); C09J 5/06 (2013.01 - EP US); C09J 7/28 (2017.12 - EP US); C09J 7/35 (2017.12 - EP US); C09J 11/04 (2013.01 - US); C09J 11/06 (2013.01 - US); C09J 163/10 (2013.01 - US); B32B 37/12 (2013.01 - EP); B32B 2037/1215 (2013.01 - US); B32B 2307/202 (2013.01 - US); B32B 2311/30 (2013.01 - US); C09J 2203/326 (2013.01 - US); C09J 2301/304 (2020.08 - US); C09J 2301/314 (2020.08 - US); C09J 2301/408 (2020.08 - US); C09J 2301/416 (2020.08 - US); C09J 2400/163 (2013.01 - EP US); C09J 2400/166 (2013.01 - US); C09J 2463/00 (2013.01 - EP)
Citation (search report)
See references of WO 2021094627A1
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
DOCDB simple family (publication)
EP 3822078 A1 20210519; EP 4058288 A1 20220921; US 2022389281 A1 20221208; WO 2021094627 A1 20210520
DOCDB simple family (application)
EP 19209572 A 20191115; EP 2020082309 W 20201116; EP 20811544 A 20201116; US 202017777173 A 20201116