EPOXY SILOXANE COATING COMPOSITIONS Russian patent published in 2017 - IPC C09D163/00 C09D183/04 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to polymer chemistry. Epoxy-polysiloxane polymer coating composition contains water, polysiloxane, non-aromatic epoxy resin and a curing system. Polysiloxane has formula:

where R₁ is selected from hydroxy-group, alkyl group, aryl group or alkoxy group. R₂ is selected from hydrogen, alkyl group or aryl group. And n is selected such that molecular weight of polysiloxane is in range from 400 to 10,000. Equivalent mass of epoxide in epoxy resin ranges from 100 to 5,000. Curing system contains a mixture of compounds, selected from aminosilane with dialkoxy-functionality, aminosilane with trialkoxy-functionality and polysiloxane resin with an amino group, where mixture has average content of functional alkoxy groups in range of 2.2–2.8. Composition reacts with formation of a cross-linked polymer structure of epoxy polysiloxane. Invention also relates to a substrate with a surface coated with composition, and to a method of coating substrate surface.

EFFECT: improved elasticity and high ability to resist to atmospheric conditions and corrosion after hardening.

22 cl, 3 tbl, 5 ex