Powder paint composition using modified bibasic carboxylic (poly) anhydride as base material

Powder paint composition using modified bibasic carboxylic (poly) anhydride as base material

Polyisocyanate-modified dicarboxylic acid (poly)anhydrides (I), which are solid at below 40 degrees C but liq. at above 120 degrees C, are prods. obtd. by reacting org. polyisocyanates with an excess (relative to the NCO/COOH reaction) of free COOH gp.-contg. dicarboxylic acid (poly)anhydrides and o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: K. RUETH, H.P. MIELE, W. SCHEFFE
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COMPOSITIONS BASED THEREON
CORRECTING FLUIDS
DYES
FILLING PASTES
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
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Beschreibung
Zusammenfassung:Polyisocyanate-modified dicarboxylic acid (poly)anhydrides (I), which are solid at below 40 degrees C but liq. at above 120 degrees C, are prods. obtd. by reacting org. polyisocyanates with an excess (relative to the NCO/COOH reaction) of free COOH gp.-contg. dicarboxylic acid (poly)anhydrides and opt. also modifying the prods. thus obtd. by reaction with a sub-equiv. amt. (relative to the anhydride gps.) of cpds. contg. anhydride-reactive amino and/or OH gps. Pref. (I) have a COOH gp. content of 0.5-30 wt.%, an anhydride gp. content (as C2O3) of 5-35 wt.% and a N2 content of 0.2-8 wt.%, being obtd. by CO2 splitting-off with NCO/COOH equiv. ratio 0.01-0.6:1 and with the anhydride component being of formula (II) opt. together up to 50 wt.% of the corresp. dicarboxylic acid. In (II), m=1-100; and n=4-16.