Thermosetting polyisiloxanic composition for protective coatings and process for coating polycarbonate sheets

A thermosetting organosiloxanic composition for protective coatings consists of a solvent and of the reaction product of four components, each one selected from one of following classes: (a) aminoalkoxysilanes; (b) formaldehyde or substances able to release formaldehyde; (c) alkyl- or alkenyl-acylox...

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Bibliographische Detailangaben
Hauptverfasser:	BOCCALON, GIANFRANCO, DE ANTONIIS, MARIO, TINTINELLI, ALBERTO, MAZZAMURRO, GIUSEPPINA, CARCIOFI, PIERO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING 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 WORKING-UP
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Beschreibung
Zusammenfassung:	A thermosetting organosiloxanic composition for protective coatings consists of a solvent and of the reaction product of four components, each one selected from one of following classes: (a) aminoalkoxysilanes; (b) formaldehyde or substances able to release formaldehyde; (c) alkyl- or alkenyl-acyloxy-silanes; (d) water; and is obtained by interreacting metered amounts of (a) and (b) components, by operating in the absence of solvents or diluents, and, separately, metered amounts of (c) and (d) components, by operating in an alcoholic solvent, and then mixing together the two reaction products obtained. Also a process is disclosed for polycarbonate sheets coating, by means of the above compositions.