UNA COMPOSICION DE ELECTRO-REVESTIMIENTO CATIONICA

• Main Authors: ZWACK, ROBERT RAYMOND, MCCOLLUM, GREGORY JAMES, SCRIVEN, ROGER LOUIS
• Format: Patent
• Language: Spanish
• Published: 16.11.1994
• Edition: 4
• Subjects: ADHESIVES; APPARATUS THEREFOR; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; USE OF MATERIALS THEREFOR; WOODSTAINS

LA INVENCION PREVEE UNA COMPOSICION DE ELECTRORECUBRIMIENTO CATIONICO QUE COMPRENDE UNA FASE DISPERSA EN UN MEDIO ACUOSO, DICHA FASE RESINOSA COMPRENDE: (A) UNA RESINA CATIONICA ELECTRODEPOSITABLE Y CARACTERIZADA PORQUE TAMBIEN COMPRENDE (B) UN POLIETER ALQUILADO LIBRE DE HIDROXILOS QUE CONTIENE AL MENOS 3 OXIGENOS - ETER POR MOLECULA Y DE 1 A 4 GRUPOS HIDROCARBONO SATURADOS SEPARADOS DE LOS OXIGENOS - ETER; LOS GRUPOS ALQUILO CONTIENEN UN PROMEDIO DE AL MENOS 2 ATOMOS DE CARBONO; DICHO POLIETER TIENE UNA SOLUBILIDAD DE 0,01 A 50 PARTES EN PESO EN 100 PARTES EN PESO DE AGUA A 25 (GRADOS) C, Y TIENE UN PUNTO DE EBULLICION MAS ALTO QUE 250 (GRADOS) C. The invention provides a cationic electrocoating composition comprising a resinous phase dispersed in an aqueous medium, said resinous phase comprising: (a) a cationic electrodepositable resin and characterised by also comprising (b) a hydroxyl-free, alkylated polyether containing at least 3 ether oxygens per molecule and from 1 to 4 saturated hydrocarbon groups separating the ether oxygens; the alkyl groups containing on average at least 2 carbon atoms; said polyether having a solubility of 0.01 to 50 parts by weight in 100 parts by weight of water at 25 DEG C, and having a boiling point greater than 250 DEG C.