Method of coating electrically conductive substrates

本发明涉及一种在阳离子电泳涂覆期间控制泡沫形成的方法。该方法是使用聚氧化烯化合物作为消泡剂，它在100重量份水中的溶解度大于50重量份。特别有利的是使用通式(I)R#+[1]-O-(CH#-[2]CH#-[2]O)#-[n]-R#+[2]的化合物，其中，R#+[1]是具有8～18个碳原子的直链或支链的烷基或链烯基，R#+[2]是具有4～8个碳原子的烷基和n是7～30的数。 PCT No. PCT/EP97/02621 Sec. 371 Date Dec. 3, 1998 Sec. 102(e) Date Dec. 3, 1998 PCT Filed May 22, 1997 PCT Pub....

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Hauptverfasser:	RAINER HUOFER, GANGTHER SCHULTE, HEINZ, HARALD FROMMELIUS
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES APPARATUS THEREFOR CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	本发明涉及一种在阳离子电泳涂覆期间控制泡沫形成的方法。该方法是使用聚氧化烯化合物作为消泡剂，它在100重量份水中的溶解度大于50重量份。特别有利的是使用通式(I)R#+[1]-O-(CH#-[2]CH#-[2]O)#-[n]-R#+[2]的化合物，其中，R#+[1]是具有8～18个碳原子的直链或支链的烷基或链烯基，R#+[2]是具有4～8个碳原子的烷基和n是7～30的数。 PCT No. PCT/EP97/02621 Sec. 371 Date Dec. 3, 1998 Sec. 102(e) Date Dec. 3, 1998 PCT Filed May 22, 1997 PCT Pub. No. WO97/46628 PCT Pub. Date Dec. 11, 1997A process for controlling foam in a water-based electrophoretic coating bath for coating an electrically conductive substrate wherein the bath contains at least one cathodically depositable synthetic resin by adding to the bath a polyalkylene oxide compound whose oxyalkyl groups contain 2 to 4 carbon atoms and the terminal OH groups are esterified with a carboxylic acid or etherified with an allyl or methyl aryl group and has a solubility of more than 50 parts by weight in 100 parts by weight of water at 25 DEG C.