Process for the production of strongly adherent coatings

Details Process for the production of strongly adherent coatings Process for the production of strongly adherent coatings

C - Chemistry, Metallurgy

08

J

C08J 7/18 (2006.01) B01J 19/08 (2006.01) B05D 3/02 (2006.01) B05D 3/06 (2006.01) B05D 3/14 (2006.01) B05D 7/00 (2006.01) C08F 2/46 (2006.01) C08J 7/04 (2006.01) B05D 7/02 (2006.01)

Patent

CA 2472063

The invention relates to a process and to the corresponding apparatus for the production of strongly adherent coatings on an inorganic or organic substrate, wherein in a first step: a) a low-temperature plasma, a corona discharge or a flame is caused to act on the inorganic or organic substrate, in a second step: b) one or more photoinitiators or mixtures of photoinitiators with monomers, containing at least one ethylenically unsaturated group, or solutions, suspensions or emulsions of the afore-mentioned substances, are applied at normal pressure to the inorganic or organic substrate, in a third step: c) using suitable methods those afore-mentioned substances are dried and/or irradiated with electromagnetic waves and, optionally, in a fourth step d) the substrate so pretreated is provided with a coating and the coating is cured or dried.

L'invention concerne un procédé et un dispositif correspondant permettant de produire des revêtements fortement adhérents sur un substrat organique ou inorganique. Le procédé consiste (a) à utiliser un plasma à faible température, une décharge par effet de couronne ou une flamme en vue d'exercer une action sur ce substrat organique ou inorganique, (b) à appliquer un ou plusieurs photoamorceurs ou des mélanges de photoamorceurs avec des monomères contenant au moins un groupe éthyléniquement insaturé, ou des solutions, des suspensions ou des émulsions des substances susmentionnées, à une pression normale sur ledit substrat organique ou inorganique, (c) à sécher lesdites substances et/ou à les irradier avec des ondes électromagnétiques à l'aide de procédés appropriés, et éventuellement (d) à recouvrir le substrat ainsi prétraité avec un revêtement, lequel est alors durci ou séché.

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