THERMOPLASTIC MASTIC FOR HIGHWAY STRIPING Russian patent published in 2006 - IPC C09D133/04 C09D133/10 E01F9/04 

FIELD: polymer materials and road marking.

SUBSTANCE: invention relates to compositions of thermoplastic mastic designed for marking bituminous concrete pavements. Thermoplastic mastic comprises film-forming butyl methacrylate/methacrylic acid/styrene terpolymer having acid number 6.0-9.0 mg KOH/g, softening temperature 90-112°C, and relative viscosity of 2% solution in butyl acetate 1.4-1.8; titanium dioxide; mineral fillers: mixture of quartz sand with fractioned micro-marble; lighting additives: mixture of glass microbeads with organic optical bleacher; plasticizer: mixture of dibutyl o-phthalate with colophony pentaerythritol ether having acid number not higher than 12.0 mg KOH/g and softening temperature not below 90°C; all taken in specified proportions.

EFFECT: reduced dirt retention level of highway strips.

2 tbl