ENVIRONMENTALLY FRIENDLY PAINT WITH THIXOTROPIC RHEOLOGY FOR METALLOGRAPHIC PRINTING (EMBODIMENTS) Russian patent published in 2021 - IPC C09D11/00 C09D11/08 C09D11/105 

FIELD: chemistry.

SUBSTANCE: present invention relates to embodiments of environmentally friendly paint with thixotropic rheology for metallographic printing. Said paint contains: at least one alkyd binder with amount of 10–40 wt. %; combination of surfactants - 0.5–14 wt. % or surfactant - 2–7 wt. %; combination of natural waxes - 2–16 wt. %; filler - 30–50 wt. %; combination of siccatives - 0.5–8 wt. % and pigment - 4–40 wt. %. Also, this paint contains: vegetable oil in amount of 3–20 wt. %; at least one alkyd binder - 10–40 wt. %; combination of surfactants - 0.5–14 wt. % or surfactant - 2–7 wt. %; combination of natural waxes - 2–16 wt. %; filler - 30–50 wt. %; combination of siccatives - 0.5–8 wt. % and pigment - 4–40 wt. %. Alkyd binder is a synthetic alkyd-type polymer of vegetable components modified with polyfunctional carboxylic acids. Combination of surfactants is a mixture of direct emulsifiers in ratio of 0–7 wt. % and reverse action emulsifiers in ratio of 0.5–7 wt. %, selected from a number of derivatives of fatty alcohols, polyols, amines, salts and esters of fatty acids, oils used simultaneously or in any combination thereof. Surfactant is an emulsifier of reverse action in ratio of 2–7 wt. %, selected from a number of derivatives of fatty alcohols, or polyols, or amines, or salts and esters of fatty acids, or oils. Combination of natural wax with melting point of 40–140°C in amount of 2–16 wt. % consists of at least two vegetable waxes with stepped melting temperature profile, one of which with melting point of 40–70°C, taken in ratio of 0.5–5 wt. %, and other with melting point of 70–140°C.

EFFECT: technical result is higher environmental friendliness both due to use of composition based mainly on plant materials, and no need to use toxic materials in technological processes, improved manufacturability by reducing the number of process operations during production, reduced amount of rigidly controlled and regulated output parameters of material, considerable reduction of paint consumption during printing, improved operational properties.

6 cl, 4 ex