CAS: 7189-82-4; 2,2-Bis(2-Chlorophenyl)-4,4,5,5-Tetraphenyl-1,2-Biimidazole

上下游产品

CAS号1707-67-1 2-(2-氯苯基)-4,5-二苯基咪唑

专利信息

专利号:US-5556924-A
优先权日:1993-11-01
标题 :Synthesis of photoreactive polymeric binders
发明人：FITZGERALD MAURICE J; KEARNEY FREDERICK R; LIANG RONG-CHANG; SCHWARZEL WILLIAM C
权利人:POLAROID CORP
摘要:A photoreactive binder that may be used to enhance photospeed in either conventional plates or on-press developable lithographic printing plates. Briefly, a polymer of m-isopropenyl- alpha , alpha -dimethylbenzyl isocyanate is derivatized for vinyl group reactivity by reacting the isocyanate groups thereof with hydroxyalkyl acrylate. The resulting photopolymeric binder provides significantly higher photospeed than the non-reactive binder currently utilized in the production of conventional printing plates. The resulting lithographic printing plate also shows better durability (as manifested by longer run-length) and is more easily developed by the microencapsulated developers utilized in the present invention. As to the preparation of the photoreactive binders, the application discloses a method of copolymerizing m-isopropenyl- alpha , alpha -dimethylbenzyl isocyanate (m-TMI) through complexation with an electron-deficient monomer such as maleic anhydride to accelerate free radical copolymerization with other monomers, and thus, provides greater monomer-to-polymer conversion. Use of the resulting product in the photoresist of a lithographic printing plate improves its adhesion to an underlying substrate.

专利号:CN-107556183-B
优先权日:2016-06-24
标题 :Synthesis method of o-diketone