Use of epoxy-polysiloxanes modified with oxyalkylene-ether group as curable coating compositions

• Main Authors: WEWERS, DIETMAR, JACHMANN, JUERGEN, WEITEMEYER, CHRISTIAN
• Format: Patent
• Language: English; French; German
• Published: 29.01.1992
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; 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; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Verwendung von härtbaren Organopolysiloxanen mit Epoxygruppen, welche zusätzlich mindestens eine an ein Si-Atom des Polysiloxans gebundene Gruppe der allgemeinen Formel [-O-((CnH2nO-)x)y]zR³-O-((CnH2nO-)x)yH aufweisen, wobei R³: ein zweiwertiger Alkylenrest mit 2 bis 11 Kohlenstoffatomen, z: 0 oder 1, y: 0 oder 1, z+y: 1 oder 2 ist, n: im durchschnittlichen Molekül einen mittleren Wert von 2 bis 3 hat, wobei die Absolutwerte von n 2, 3 oder 4 betragen, und; x: einen Wert von 1 bis 200 hat, alleine oder in Mischung mit härtbaren Verbindungen, welche Epoxygruppen aufweisen, insbesondere Epoxygruppen enthaltenden Organopolysiloxanen, welche jedoch frei von der vorgenannten Gruppe sind, als härtbare Beschichtungsmittel mit abhäsiven Eigenschaften. Use of curable organopolysiloxanes having epoxy groups and at least one group of the general formula… [-O-((CnH2nO-)x)y]zR3-O-((CnH2nO-)x)yH… which is bound to an Si atom of the polysiloxane and in which … …  R3 is a divalent alkylene radical having 2 to 11 carbon atoms, …  z is 0 or 1, …  y is 0 or 1, …  z+y is 1 or 2, …  n in the average molecule has an average value of 2 to 3, the absolute values of n being 2, 3 or 4, and …  x has a value of 1 to 200, … on their own or as a mixture with curable compounds having epoxy groups, in particular organopolysiloxanes containing epoxy groups, but which are free of the abovementioned group, as curable coating compositions with abhesive properties.