METHOD OF FORMING COATING FILM ON CONSTRUCTION MATERIAL Russian patent published in 2010 - IPC C09D5/00 C04B41/48 B05D5/00 B01J35/00 

FIELD: chemistry.

SUBSTANCE: method of forming coating film involves deposition of material containing a hydrophilic polymer, a photochemical catalyst, water, alcohol or surfactant, and then drying the deposited material at room temperature or while supplying air to the surface. The hydrophilic polymer is selected from: methysilicate and polytetrafluoroethylene modified through graft polymerisation with sulfonic acid and the photochemical catalyst is a titanium sol whose content in terms of titanium oxide is 10-50 pts. wt per 100 pts. wt of the hydrophilic polymer, or titanium oxide with apatite coating on the front side. The static limiting wetting angle or dynamic receding angle of the film is not greater than 30. Activity index of decomposition of methylene blue is not less than 3.0, and thickness of the film is 0.1-3.0 mcm.

EFFECT: invention enables to obtain construction material with antisplash properties owing to improved hydrophilic properties of the coating film, and ecological properties which improve characteristics of the environment for humans, specifically antifungal, deodorant, bactericide and air-cleaning properties due to effect of the photochemical catalyst.

6 cl