Heteropolyacids as new catalysts of the Ritter reaction
摘要:
Some nitriles reacted with camphene in the presence of heteropolyacids (H3PW12O40, H4SiW12O40, H7PMo12O40) as catalyst to give N-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)-substituted amides in fairly high yields.
A novel, fast-bonding adhesive composition is disclosed having low odor, and when cured, forms adhesive bonds having high glass transition temperature, Tg, and high shear strength at elevated temperatures. The composition comprises one or more of acryl- and methacrylamides which have a cyclic group directly attached to the amide nitrogen or has the amide nitrogen as a member of a cyclic group. The composition further comprises a polymeric toughener that is dissolved or dispersed in the composition.
Aqueous coating composition for a plastics, especially a polypropylene, substrate comprising a stable aqueous dispersion derived from dispersing into water with the aid of a surfactant(s) an organic solvent solution of a composition comprising a chlorinated polyolefine(s), at least one olefinically unsaturated monomer which is polymerisable to a polymer during and/or after coating formation and a filmogenic polymer(s).
Überzugsmittel und dessen Verwendung bei Verfahren zur Herstellung von Mehrschichtenüberzügen
申请人:Herberts Gesellschaft
mit beschränkter Haftung
公开号:EP0572900A2
公开(公告)日:1993-12-08
Überzugsmittel, enthaltend ein oder mehrere hydroxylgruppenhaltige (Meth)acryl-Copolymerisate, sowie ein oder mehrere Lösemittel und gegebenenfalls Wasser, Effektpigmente und/oder farbgebende Pigmente, Füllstoffe und/oder lackübliche Additive, wobei das (Meth)acryl-Copolymerisat im wesentlichen aus Einheiten auf der Basis folgender Monomerer aufgebaut ist:
a) 0.5 - 10.0 Gew.-% Amiden und/oder N-substituierten Amiden der Acrylsäure und/oder Methacrylsäure,
b) 5.0 - 30.0 Gew.-% Phenylalkylestern der Acrylsäure und/oder Methacrylsäure,
c) 10.0 - 30.0 Gew.-% Hydroxyalkylestern der Acrylsäure und/oder Methacrylsäure mit 2-8 C-Atomen im Hydroxyalkylrest,
d) 0.6 - 7.5 Gew.-% Acrylsäure und/oder Methacrylsäure, und
e) 30.0 - 83.9 Gew.-% Alkylestern der Acrylsäure und/oder Methacrylsäure mit 1-18 C-Atomen im Alkylrest, und
wobei die Summe der Komponenten a) bis e) jeweils 100 beträgt. Die Überzugsmittel sind besonders geeignet zur Herstellung von Basislackschichten in Mehrschichtlackierungen, insbesondere für die Serien- und Reparaturlackierung auf dem Kraftfahrzeugsektor.
Process for producing aqueous ink for inkjet printing
申请人:KAO CORPORATION
公开号:EP0857766A1
公开(公告)日:1998-08-12
A process for producing an aqueous ink for inkjet printing capable of giving an elevated print density of printed matters, being improved in fixability to the material to be printed, water resistance and improved storage stability and scarcely scorching onto a printer head. This process comprises dissolving a salt-forming group-having polymer and a hydrophobic dye in a water-insoluble organic solvent to obtain a solution, adding water and a neutralizing agent optionally together with a surfactant to the solution to ionize the salt-forming group of the polymer, emulsifying the resulting mixture, and removing out the solvent from the emulsion to obtain an ink containing an aqueous dispersion of the polymer particles in which the dye has been encompassed.