2results about How to "Increased curing crosslink density" patented technology

This invention belongs to the field of synthetic bio-based waterborne polyols, mainly applied to waterborne polyurethane mortar floor coatings. This invention provides a modified castor oil specifically for waterborne polyurethane mortar floor coatings. It achieves waterborne conversion and controllable functionality of castor oil through relatively simple process conditions. Emulsions made from the modified castor oil synthesized by this invention have better storage stability than emulsions made by direct external emulsification of castor oil. Furthermore, it requires less stringent process conditions than chemical grafting of functional groups to improve the hydrophilicity of castor oil, meaning that waterborne conversion and functionality control of castor oil can be achieved under milder conditions.

The application relates to the technical field of optical fiber coating material preparation, and discloses a preparation method of light-cured coating for side light-emitting optical fiber; a solvent-free ultraviolet light-cured coating is prepared, the coating is coated on the surface of an optical fiber mandrel by adopting a single-layer single-time coating process and is solidified, and only a single-layer functional coating is arranged after molding; the coating takes a multifunctional fluorine-containing acrylate resin as a film-forming matrix, is doped with inorganic nano scattering particles and is dispersedly modified by cooperating with a fluorine-modified polymer dispersant, multifunctional fluorine-containing resin is compounded with nano particles in a specific proportion, the refractive index of the coating after solidification can be precisely and stably controlled in the interval of 1.39-1.42, the refractive index of the coating is perfectly matched with the refractive index of a common optical fiber core layer, light leakage is uniform, the problems of uneven light-emitting brightness and irregular light spots of traditional optical fibers are completely solved, and the side light-emitting effect is soft and uniform.