Compositions and methods for treating automotive surfaces

摘要

This disclosure relates to compositions containing a) a silicone resin, b) a first silicone fluid having a viscosity from about 1 to about 15,000 centistokes at 25° C.; c) a second silicone fluid having a viscosity from about 1 to about 30,000 centistokes at 25° C.; d) an acrylic polymer; e) a hydrocarbon solvent; and f) water. The compositions of this disclosure provide long lasting hydrophobic coatings with high water contact angles for automotive surfaces, in which the hydrophobic automotive surfaces possess self-cleaning functions, e.g., water and dirt repellency. This disclosure also relates to methods for treating automotive surfaces and to automotive surfaces coated with the compositions.

主权项

1. A composition consisting of:
a) a silicone resin comprising a MQ resin, wherein the MQ resin has a M:Q ratio from about 0.5:1.0 to about 1.5:1.0 and the average molecular weight from about 1000 to about 10,000; b) a first silicone fluid having a viscosity from about 1 to about 15,000 centistokes at 25° C.; c) a second silicone fluid having a viscosity from about 1 to about 30,000 centistokes at 25° C.; d) an acrylic polymer; e) a hydrocarbon solvent; f) water; and g) optionally one or more adjuncts selected from the group consisting of leveling agents, pH adjusters, buffers, spreading agents, brighteners, fluorescent whitening agents, ultraviolet (UV) absorbers, UV scatterers, infra-red (IR) absorbers, IR scatterers, free-radical quenchers, free-radical stabilizers, excited state quenchers (ESQ), anti-oxidants, preservatives, fragrant oils, propellants, and their mixtures.