C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) B05D 1/36 (2006.01) C08G 18/80 (2006.01)
Patent
CA 2580868
The invention relates to coating agents that contain (A) at least 50 % by weight, based on the content in nonvolatile substances in the coating agent, of at least one compound (A1) having at least one reactive group of formula (I) -NR-C(O)-N-(X-SiR"x(OR')3-x)n(X'-SiR"y(OR')3-y)m (I), wherein R = hydrogen, alkyl, cycloalkyl, aryl or aralkyl, whereby the carbon chain may be interrupted by non-vicinal oxygen, sulfur or Nra groups, with Ra = alkyl, cycloalkyl, aryl or aralkyl, R'= hydrogen, alkyl, cycloalkyl, aryl or aralkyl, whereby the carbon chain may be interrupted by non-vicinal oxygen, sulfur or Nra groups, X,X' = linear and/or branched alkylene or cycloalkylene group having 2 to 20 carbon atoms, R" = alkyl, cycloalkyl, aryl, or aralkyl, whereby the carbon chain may be interrupted by non-vicinal oxygen, sulfur or Nra groups, n = 0 to 2, m = 0 to 2, m+n = 2, and x,y = 0 to 2, (B) a catalyst for cross-linking the -Si(OR')3-x(y) units, and (C) an aprotic solvent or a mixture of aprotic solvents.
La présente invention concerne un agent de revêtement contenant: (A) au moins 50 % en poids - rapportés à la teneur en substances non volatiles dans l'agent de revêtement - d'au moins un composé (A1) comprenant au moins un groupe réactif de formule (I) -NR-C(O)-N-(X-SiR"x(OR')3-x)n(X'-SiR"y(OR')3-y)m (I) dans laquelle R = hydrogène, alkyle, cycloalkyle, aryle ou aralkyle, la chaîne carbonée pouvant être interrompue par des groupes oxygène, soufre ou Nra non voisins où Ra = alkyle, cycloalkyle, aryle ou aralkyle, R'= hydrogène, alkyle, cycloalkyle, aryle ou aralkyle, la chaîne carbonée pouvant être interrompue par des groupes oxygène, soufre ou Nra non voisins, X,X' = alkylène ramifié et/ou linéaire ou un radical cycloalkylène comprenant de 2 à 20 atomes de carbone, R" = alkyle, cycloalkyle, aryle ou aralkyle, la chaîne carbonée pouvant être interrompue par des groupes oxygène, soufre ou Nra non voisins, n = 0 à 2, m = 0 à 2, m+n = 2, et x,y = 0 à 2; (B) un catalyseur pour réticuler les unités -Si(OR')3-x(y); et (C) un solvant aprotique ou un mélange de solvants aprotiques.
Brosseit Andre
Hesener Simone
Klein Guenter
Mikolajetz Dunja
Moellers Martina
Basf Coatings Ag
Robic
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