564 results about "Benzoin compound" patented technology

The invention relates to a Si-containing macromolecular photoinitiator and the synthesizing method and the uses belong to the photographic polymer material field. In a general formula of the photoinitiator being (I), I is the photoinitiator with hydroxyl, i.e. the hydroxyl-containing benzoin class, benzoin ethers, alkyl-acetophenones, alkyla-acetophenones, benzophenone type, thioxcanthone derivatives, coumarone class and camphorquinone compound; R1 is the alkyl of C1-C12, or the alkyl or aryl of C1-C12 substituted by N, O, S heteroatoms; R2 and R3 are alkyls of C1-C12, the alkyls of C1-C12 substituted by N, O, S heteroatoms, or alkoxyls of C1-C12; n is equal to 3 to 50. The synthesizing method obtains the compounds of isocyanate with photoinitiator by the reaction of the hydroxyl-containing micro-molecular photoinitiator with an isocyanate group of the diisocyanate, and allows the reaction of the photoinitiator-containing compounds of isocyanate with the hydroxyl-containing siloxane macromolecular compounds. The synthesizing method is used for initiating the free radical photopolymerization, improving the speed and efficiency of producing active species by photo sensitive decomposition and reducing the micro-molecular residue and biological toxicity of coatings.