CHEMICAL COMPOSITION SENSITIVE TO TEMPERATURE CHANGES AND METHOD OF ITS PRODUCTION AND USE Russian patent published in 2018 - IPC C09D11/00 G01K11/14 H01F1/00 

FIELD: chemistry.

SUBSTANCE: magnetizable chemical composition is described, comprising: at least, one polar solvent selected from the group consisting of an alcohol having a carbon number of C₈ up to C₁₄, polytetrahydrofuran, or a mixture thereof; a ferromagnetic component comprising a plurality of magnetizable particles of a Stable Single-Domain (SOD) type selected from the group consisting of magnetite, substituted magnetite and/or ferrite in an amount of 5 to 15% of the volume of the solvent and having a diameter of about 20 to 50 nm; and a polymer component comprising polyvinyl butyral (PVB) or a polyvinyl butyral vinyl alcohol-vinyl acetate copolymer in a percentage of 3 to 15% of the solvent volume, wherein the said polymer component is in the form of a network or a grid and defines a plurality of cells or zones, in each of which one of the said particles is immersed in the said polar solvent. A method of making a composition, a microcapsule, an ink, and a method for testing or analyzing the product are also disclosed.

EFFECT: new sensitive composition is produced, that is sensitive to changes in temperature.

16 cl, 11 dwg