2 results about "Azacyclopropane" patented technology

This invention relates to the field of coating technology, specifically to a printing coating for colored paper and its preparation method. In the preparation process, this invention incorporates dithiol dihydroxyacetic acid to increase the crosslinking points of the system, and trimethylolpropane tris(2-methyl-1-azacyclopropane propionate) containing an unstable aziridine three-membered ring to improve the degree of crosslinking. It also introduces isoborneol methacrylate to reduce internal stress, effectively balancing the crosslinking density and volume shrinkage of the system, resulting in a coating with excellent adhesion. Furthermore, this invention adds the bifunctional monomer 1,6-hexanediol diacrylate to make the network structure more uniform and provide anti-photooxidation properties, making the system less prone to oxidative discoloration. The addition of tripropylene glycol diacrylate reduces the risk of yellowing caused by small molecule migration. Therefore, the coating obtained in this way has significant anti-yellowing effects, preventing color distortion of colored paper and maintaining the appearance stability of the colored paper.

The application discloses a kind of synthesis 13 The application discloses a method for synthesizing C-labeled 4-trifluoromethyl aryl formate and application thereof.The method has mild reaction conditions and simple preparation process.Further, the method uses aryl iodide, epoxide or aziridine as raw materials, and reacts with 13 C-labeled 4-trifluoromethyl aryl formate is used as a starting material, and under the action of a palladium catalyst, a phosphine ligand, a norbornene derivative, a base and an additive, a series of C-labeled isochromane ketone compounds and dihydroisoquinoline ketone compounds can be synthesized by stirring at 60 DEG C in an organic solvent. 13 C-labeled isochromane ketone compounds and dihydroisoquinoline ketone compounds have important theoretical value and application potential.