Low-color ultraviolet absorbers for high uv wavelength protection applications

The invention claims habit is wherein the ultraviolet absorption, a colour value of very low (and can be not need to add of colouring agent to the resist of into colour when using), and wherein providing an efficient compound is a wavelength range, wherein the wavelength range, wherein the protection to obtained according to the mass of the ultraviolet absorbent successfully. The non-defined comprises the g of transparent plastics, wherein the compound of formula i outstandingly, inexpensive, and beneficial ultraviolet irradiation with. The concrete compound is fact chamber is polymer, comprising the chain lengths a oxidation of the Alcohol. the habit is liquid, is ladder-shaped or two to an agent in. Alcohol, wherein the ultraviolet absorbent compound further very low migratory properties, wherein of the long-term compound is an medium polymerized of the. The present invention also relates to the final product, provided with qi-tonifying the specific generalized of the compound, the preparation of the mass of the compound, a such limpid, an ultraviolet the method for producing final product.