LACQUER POLYISOCYANATE HAVING ALIPHATIC-AND AROMATIC-BONDED ISOCYANATO GROUPS

The prodn. of liq. coating polyisocyanates with aliphatic and aromatic NCO gps. (I) and a NCO content of 5-25 wt.% comprises the catalytic co-trimerisation of: (A) 100 pts. wt. aromatic isocyanate component contg. (A1) 70-100 wt.% 2,4- and/or 2,6-TDI and (A2) 0-30 wt.% aromatic isocyanates with a mo...

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Bibliographische Detailangaben
Hauptverfasser:	YOOZEFU PEDAIN, RUTSUTSU SHIYUMAARUSUTEIIKU, MARUTEIN BURAAMU
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:	The prodn. of liq. coating polyisocyanates with aliphatic and aromatic NCO gps. (I) and a NCO content of 5-25 wt.% comprises the catalytic co-trimerisation of: (A) 100 pts. wt. aromatic isocyanate component contg. (A1) 70-100 wt.% 2,4- and/or 2,6-TDI and (A2) 0-30 wt.% aromatic isocyanates with a mol. wt. of 119-350 other than (A1), and (B) 15-700 pts. wt. aliphatic isocyanate component contg. wholly aliphatic coating polyisocyanate(s) with a content of less than 0.7 wt.% distillable monomeric di-isocyanate and a viscosity of less than 10,000 mPa's at 23 degrees C, opt. with prior, simultaneous and/or subsequent partial reaction of NCO gps. with (C) up to 40 equiv.% (w.r.t. NCO gps. in A) alcohol(s) with a mol. wt. of 32-900, and opt. in presence of (D) inert solvent; reaction is continued until the content of distillable monomeric isocyanate (A) is less than 0.5 wt.% of the total mixt. Also claimed are coating polyisocyanates obtd. by this process.