EP 0348291 A1 19891227 - Processes for enamelling metals, in particular steel, and compositions for enamelling.
Title (en)
Processes for enamelling metals, in particular steel, and compositions for enamelling.
Title (de)
Emaillierungsverfahren auf Metallen, insbesondere auf Stahlblechen und Emailzusammensetzungen.
Title (fr)
Perfectionnements aux procédés d'émaillage sur métaux, notamment sur tÔle d'acier, et aux compositions d'émaillage.
Publication
Application
Priority
FR 8808385 A 19880622
Abstract (en)
The invention relates to a process for enamelling a metal article, especially steel sheet, consisting in applying by a liquid route at least one mass layer, characterised in that at least one hydrophilic surface-active or emulsifying product is added to an enamelling composition by a liquid route, in that this enamelling composition, to which the surface-active product has been added, is applied directly to the article, without performing a degreasing and/or acidic scouring treatment on the latter, and in that the vitrification, by baking, of the enamel deposited on the article thus treated is then carried out, the fats present on the article and the surface-active agents disappearing during the baking, which avoids enamelling faults after baking; the surface-active product preferably consists of polyoxyethylenated sorbitan monolaurate and, in this case, its content is of the order of 0.5%. The invention also relates to a composition for enamelling metals, characterised in that is comprises at least one hydrophilic surface-active or emulsifying product, in particular polyoxyethylenated sorbitan monolaurate in a concentration of 0.5%.
IPC 1-7
IPC 8 full level
C23D 5/02 (2006.01)
CPC (source: EP)
C23D 5/02 (2013.01)
Citation (search report)
- [A] EP 0064649 A2 19821117 - BAYER AG [DE]
- [A] CHEMICAL ABSTRACTS, vol. 100, no. 16, 16 avril 1984, page 633, résumé no. 130902q, Columbus, Ohio, US; & JP-A-58 47 801 (FURUKAWA ELECTRIC CO. LTD) 25-10-1983
Designated contracting state (EPC)
AT BE CH DE ES GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0348291 A1 19891227; DE 348291 T1 19900613; DK 310789 A 19891223; DK 310789 D0 19890622; ES 2013227 A4 19900501; FR 2633312 A1 19891229; FR 2633312 B1 19901005; GR 900300039 T1 19910731; MA 21580 A1 19891231; TN SN89066 A1 19910204; TR 23946 A 19901221
DOCDB simple family (application)
EP 89401726 A 19890619; DE 89401726 T 19890619; DK 310789 A 19890622; ES 89401726 T 19890619; FR 8808385 A 19880622; GR 900300039 T 19910731; MA 21833 A 19890622; TN SN89066 A 19890622; TR 64689 A 19890622