Hydrophobic coating for ink jet printing heads

Details Hydrophobic coating for ink jet printing heads Hydrophobic coating for ink jet printing heads

C - Chemistry, Metallurgy

09

D

C09D 183/04 (2006.01) B05D 5/08 (2006.01) B41J 2/16 (2006.01) C09D 183/06 (2006.01)

Patent

CA 2230584

An ink jet printing head has an hydrophobic layer made of a polymer material produced by using at least one compound of formula (I) XaRbSiR'(4-a-b), in which X stands for a hydrolysable group, R stands for optionally substituted alkyl, aryl, alkenyl, alkylaryl or arylalkyl, R' stands for an organic radical with at least one polymerisable group, a = 1 to 3 and b = 0 to 2. Also disclosed is a process for producing the printing heads and a coating agent therefor.

L'invention concerne une tête d'impression à jet d'encre pourvue d'une couche hydrophobe en un matériau polymère que l'on produit en utilisant au moins un composé de formule (I) X¿a?R¿b?SiR'¿(4-a-b)?, dans laquelle X désigne un groupe hydrolysable, R désigne alkyle, aryle, alcényle, alkylaryle, ces groupes pouvant être le cas échéant, substitués, R' désigne un radical organique avec au moins un groupe polymérisable, a vaut 1 à 3 et b vaut 0 à 2. L'invention concerne également un procédé de fabrication de ces têtes d'impression ainsi qu'un agent de revêtement pour ces têtes d'impression.

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