| abstract |
The inventive composition contains an acrylic copolymer - the product of the interaction of butyl methacrylate, styrene, butyl acrylate, ethyl methacrylic ester) (glycol and a mixture of alkyl methacrylates or Ca-Si in a weight ratio of 30-40: 25-35: 10-20: 10-20: 3 -7 with a molar mass of 5000-8200, containing hydroxyl groups of 1.8-2.2% 14-40%, an isocyanate modifier-hardener-product of the interaction of polyoxypropyl, nglycol molar mass of 180-220: glycerol and toluene - diisocyanate in their mass ratio of 6.6-11.7: 10.6-14.27.77.3-81.0 5.3-11.0%, curing catalyst 0.10-0.25%, organ organic solvent - the rest of the copolymer is dissolved in the solvent, the catalyst is added and, if necessary, functional additives The mixture is stirred for 30-40 minutes Before hardening is added, the coating is dried at 60 ° C for 1 hour, at 80 ° C for 30 min Characterization of adhesion coating to polyphenylene oxide - 1 point, to polystyrene - 1 point, hardness - 0.65 hour units 4 tab. (L C |