초록 ▼

An ultraviolet absorbing multilayer coating formed on one side of a transparent substrate includes a first layer formed on a surface of the transparent substrate and a second layer formed on the first layer. The first layer is an ultraviolet absorbing film of a hardened primer coating of a synthetic

An ultraviolet absorbing multilayer coating formed on one side of a transparent substrate includes a first layer formed on a surface of the transparent substrate and a second layer formed on the first layer. The first layer is an ultraviolet absorbing film of a hardened primer coating of a synthetic resin which is mixed with a fluorescent brightening agent and an ultraviolet absorbing agent. The second layer is a film of a siloxane polymer. An optional infrared reflecting coating is interposed between the transparent substrate and the first layer. The ultraviolet rays until the upper limit of its wavelength can be substantially absorbed by the multilayer coating.

대표청구항 ▼

An ultraviolet absorbing colorless and transparent multilayer coating formed on one side of a transparent substrate, said multilayer coating comprising: a first layer formed on a surface of the transparent substrate having a heat resistance against a temperature not lower than 80°C., said first laye

An ultraviolet absorbing colorless and transparent multilayer coating formed on one side of a transparent substrate, said multilayer coating comprising: a first layer formed on a surface of the transparent substrate having a heat resistance against a temperature not lower than 80°C., said first layer being an ultraviolet absorbing film prepared by hardening a primer coating solution of a synthetic resin which is mixed with a fluorescent brightening agent and an ultraviolet absorbing agent, wherein the molar ratio of brightening agent to ultraviolet absorbing agent is 1:8 to 1:1, wherein the concentration of the synthetic resin in the primer coating solution is from about 1 to about 15 wt %, wherein the concentration of a total of the fluorescent brightening agent and the ultraviolet absorbing agent in the primer coating solution is from about 0.5 to about 3 wt %, and wherein viscosity of the primer coating solution is from about 10 to about 1000 cP; and a second layer formed on said first layer, said second layer being a film of a siloxane polymer.