Method for production of dispersion varnish intended for making varnish coatings with high resistance to ethereal oil effects

摘要

The purpose of the notification is the production of a spray paint for coatings with a high resistance to the action of essential oils containing as a base,aqueous polyurethane dispersion,consisting of doses of 59% to 60%m /m /polyurethane dispersion of the active substance from 30 to 35%m /m, in which the urethane polymer is silicone -modified, to the water -coated mixer and the quick -boiler the temperature from 30oC to 35oC and the whole is mixed and, during continuous mixing, added as follows: from 0,1% to 1,0%m /m emulsion of the polyetheroxyloxane copolymer in water with dry mass content from 20% to 25%m, from 0,05% to 0,3%m /m of a potent air pressure reducing agent polyether -modified polydimethylsiloxane, 0,04% to 0,15% m /m,favourable 0,1%m /m biocidal product in the form of a dispersion containing the active substances: methylisothiazolinone and iodopropynylobutyl carbamate (3 -iodo -2 -propynyl butyl carbamate) mixed in relation to 3:1, increasing the turnover of the mixture and homogenising the mixture and then adding water which is de -mineralised in the quantity resulting from the additives and then dosed with 0,01% to 0,5%m /m of silicon which has been tempered, the pre -homogenised mixture is subjected to a cavitation process and is dynamically cooled to a temperature after switching to a cavity mixture hours from 10oC to 15oC.