WATER REPELLENT COMPOSITIONS

An aqueous emulsion composition suitable for treating cellulosic or masonry surfaces to render them water repellent is disclosed. This composition comprises (i) an alkoxysilane of the formula R n Si(OR')4-n wherein R is an alkyl radical, an alkenyl radical, phenyl, chloropropyl or trifluoroprop...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	POPA, PAUL JOSEPH, STARK-KASLEY, LORI ANN, GENTLE, THOMAS MATTHEW, KENNAN, LINDA DENISE, HAUENSTEIN, DALE EARL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CORRECTING FLUIDS DYES FILLING PASTES INKS LIME, MAGNESIA MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES REFRACTORIES SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	An aqueous emulsion composition suitable for treating cellulosic or masonry surfaces to render them water repellent is disclosed. This composition comprises (i) an alkoxysilane of the formula R n Si(OR')4-n wherein R is an alkyl radical, an alkenyl radical, phenyl, chloropropyl or trifluoropropyl, n is 1 or 2 and R' is an alkyl radical having 1 to 6 carbon atoms; (ii) a silane coupling agent of the formula R''m R''' p Si(OR')4-m-p wherein R'' is selected from the group consisting of amino or quaternary ammonium organofunctional groups, R''' is an alkyl radical having 1 to 4 carbon atoms, R' has its previously defined meaning, m is 1 or 2 and p is 0 or 1, with the provisos that m + p is 2 or less and the molar ratio of said alkoxysilane (i) to said silane coupling agent (ii) is 0.5:1 to 3:1; and (iii) a polyisobutylene polymer. Preferred emulsions of the invention further comprise a wax component.