DECOLORIZABLE COMPOSITION

PURPOSE:To provide the title composition which is white and opaque and becomes transparent when cured so that it is easy to distinguish between a cured state and an uncured state and which gives a cured material excellent in transparency by dispersing a powder specified in both particle diameter and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OGAWA MASAO, KIYOMURA YOSHIHIRO, KINAGA YOSHIMASA
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide the title composition which is white and opaque and becomes transparent when cured so that it is easy to distinguish between a cured state and an uncured state and which gives a cured material excellent in transparency by dispersing a powder specified in both particle diameter and refractive index in a vehicle component having a refractive index lower by a specified value than that of said powder. CONSTITUTION:A powder (e.g. a tripropylene glycol diacrylate polymer powder or an alumina powder) having a particle diameter of 0.5-1000mum and a refractive index at 25 deg.C of 1.3 to 1.8 is dispersed in a vehicle component (e.g. tripropylene glycol diacrylate monomer) having a refractive index lower by 0.1 to 0.03 than that of said powder and, if necessary, a photopolymerization initiator (e.g. acetophenone), etc., are added to the dispersion, thus giving a white and opaque, curable decolorizable composition. This composition loses its color when cured to give a transparent film; therefore, it can be effectively utilized in applications wherein transparency is required.