THERMOPLASTIC MASTIC FOR MARKING AUTOMOBILE ROAD AND AIRDROME WITH ASPHALT-CONCRETE COATING Russian patent published in 2005 - IPC

FIELD: organic chemistry, technical materials.

SUBSTANCE: invention relates to material used for marking roads with asphalt-concrete coating. Invention describes thermoplastic mastic comprising film-forming polymer, titanium dioxide, plasticizing agents, phototechnical additives and mineral filling agents. Mastic comprises triple acrylic polymer of butyl methacrylate, methacrylic acid and styrene with acid number 6.0-9.0 mg KOH/g, softening point 90-112°C and relative viscosity 1.4-1.8 for 2% solution in butyl acetate as a film-forming agent; mastic comprises a mixture of dibutyl-ortho-phthalate or plasticizer agent EDOS with dimethylterephthalate as plasticizing agents. Mastic comprises organic optical whitening agent, possibly in mixture with glass microbeads as a phototechnical additive, and a mixture of quartz sand and micromarble particles as a mineral filling agent. Proposed mastic provides preparing coating of the best whiteness (above 80%) and less fragility in the broad exploitation temperature range.

EFFECT: improved and valuable properties of mastic.

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