COMPOSITE MATERIAL FOR PRODUCTION OF COLOURED TARGET PLATES Russian patent published in 2021 - IPC C08K3/26 C08K3/04 C08L57/02 C08L93/04 F41J9/16 B29C43/02 

FIELD: foundry.

SUBSTANCE: invention can be used in production of target-plates for bench firing by hot pressing or pressure casting. Composite material for making target-plates comprises a binder which is an oil polymer resin, or a pentaerythritol rosin ester, or glycerol ester of colophony, with a softening temperature of 95–110 °C and chromaticity according to iodometric scale of 0.25–60 units in amount of 20–25 wt. % and mineral filler with average particle size of 10–30 mcm and whiteness of more than 93 % in amount of 75–80 wt. %. Composite material also contains pigment with particle size of 0.2–1 mcm and specific surface area of 0.1–70 m²/g in amount of 0.01–0.1 % of total weight of binder and filler and plasticiser in amount of 0–1 % of total weight of binder and filler.

EFFECT: invention makes it possible to produce target-plates of specified colour, which do not require painting.

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