COATING COMPOSITION FOR ZINC SUBSTRATE

PURPOSE:To provide the titled compsn. excellent in adhesion to zinc substrates, by incorporating a particular phthalate resin and calcium plumbate. CONSTITUTION:Polybasic acids consisting mainly of phthalic anhydride and contg. 1-20wt% straight-chain dibasic acid of formula (wherein n is 4-17), poly...

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Bibliographische Detailangaben
Hauptverfasser:	SENO TATSUROU, KASHIWAGI EIICHI, SHIBATA MAKIO
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 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 titled compsn. excellent in adhesion to zinc substrates, by incorporating a particular phthalate resin and calcium plumbate. CONSTITUTION:Polybasic acids consisting mainly of phthalic anhydride and contg. 1-20wt% straight-chain dibasic acid of formula (wherein n is 4-17), polyols (e.g., ethylene glycol), and oils (e.g., soybean oil) or fatty acids are polycondensed by dehydrating at 200-260 deg.C for 5-20hr to yield a phthalate resin having an oil length of 30-65%, a hydroxyl value of 20-50, and an acid value of 20 or below. Then, 0.5-65wt% calcium plumbate, solvents (e.g., toluene), driers (e.g., cobalt drier), etc. are incorporated with 30-95wt% said phthalate resin. EFFECT:It is possible to obtain films excellent in durability, gloss retention, adhesion, water resistance, and anti-corrosion.