EP 3960899 A1 20220302 - ANODIZED LAYERS RESISTANT TO ACID AND ALKALI
Title (en)
ANODIZED LAYERS RESISTANT TO ACID AND ALKALI
Title (de)
SÄURE- UND LAUGENBESTÄNDIGE ELOXALSCHICHTEN
Title (fr)
COUCHES ANODISÉES RÉSISTANTES AUX ACIDES ET ALCALINS
Publication
Application
Priority
IT 202000020590 A 20200828
Abstract (en)
The present invention relates to a process for coating an anodised aluminium or anodised aluminium alloy substrate in which a solution comprising at least one alkaline silicate, at least one silane and at least one siloxane and/or one polysiloxane is applied to the substrate and left to dry at a temperature comprised between 55°C and 80°C.The invention also relates to an anodised aluminium or anodised aluminium alloy substrate coated with a protective layer obtained by the application of the solution comprising at least one alkaline silicate, at least one silane and at least one siloxane and/or one polysiloxane on the aluminium oxide layer. The coated substrate according to the invention resists at pHs from 1 to 13.5.
IPC 8 full level
C23C 18/12 (2006.01); C25D 11/24 (2006.01)
CPC (source: EP)
C23C 18/122 (2013.01); C23C 18/1245 (2013.01); C25D 11/246 (2013.01)
Citation (applicant)
- EP 1873278 A1 20080102 - HENKEL KGAA [DE]
- JP 2003183889 A 20030703 - SHIMANO KK
- US 2015034487 A1 20150205 - DANZEBRINK ROLF [DE], et al
- EP 3245317 A1 20171122 - ASIT AUTOMOTIVE S R L [IT], et al
Citation (search report)
- [A] CN 106400085 A 20170215 - WUHAN FENGFAN ELECTROCHEMICAL TECH CO LTD, et al
- [A] US 2006099332 A1 20060511 - ERIKSSON MATS [SE], et al
- [AD] EP 3023522 A1 20160525 - AGC GLASS EUROPE [BE], et al
- [AD] EP 1873278 A1 20080102 - HENKEL KGAA [DE]
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 3960899 A1 20220302; IT 202000020590 A1 20220228; WO 2022043977 A1 20220303
DOCDB simple family (application)
EP 21193393 A 20210826; IB 2021058928 W 20210929; IT 202000020590 A 20200828