Silicone primer

The bonding of a sealant or coating to a substrate can be improved by applying to the substrate a composition containing a specified polydiorganosiloxane and a specified reactive compound, then applying the sealant or coating to the cleaned and treated substrate. The polydiorganosiloxane is a linear...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	O'BRIEN, WILLIAM ROBERT, BERG, DANIEL TRENT
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 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 GENERAL PROCESSES OF COMPOUNDING INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	The bonding of a sealant or coating to a substrate can be improved by applying to the substrate a composition containing a specified polydiorganosiloxane and a specified reactive compound, then applying the sealant or coating to the cleaned and treated substrate. The polydiorganosiloxane is a linear polydiorganosiloxane having a viscosity of from 10 to 50 centistokes at 25 DEG C. or a cyclic polydiorganosiloxane having 4 or 5 silicon atoms. The reactive compound is a mixture of silanes or silicates of the formula RnSi(OZ)4-n, where R is a monovalent hydrocarbon or substituted hydrocarbon of from 1 to 4 carbon atoms or phenyl; Z is an acyl radical of less than 4 carbon atoms, R or R''OR where R'' is ethylene or propylene; and n is 0 to 3; and titanate of the formula Ti(OR')4 where R' is a monovalent radical selected from the group consisting of alkyl radical having from 1 to 5 carbon atoms and the acetylacetonyl radical.