Application of 1477-42-5. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 1477-42-5, Name is 4-Methylbenzo[d]thiazol-2-amine. In a document type is Article, introducing its new discovery.
Seven novel high refractive index (HRI) acrylic monomers, comprising the quinolinone structural motive, have been synthesized and characterized. Cross-linked homo- as well as copolymers were prepared by photochemical bulk polymerization. The homopolymers show refractive indices at 589 nm (n589) ranging from 1.60 up to 1.68, glass transition temperatures (Tg) from 52 to 76 C, and Abbe numbers (nuAbbe) of 19 to 25. Due to these parameters, the homopolymers are not suitable to be used directly for intraocular lens (IOL) manufacture, but the quinolinone monomers may be used as high refractive index components in copolymers. Potential mixtures were calculated theoretically and one example, a copolymer with PEA and PEGPEA, was prepared and characterized. The experimentally found values were Tg = 24 C, n589 = 1.593, and nuAbbe = 28.3. Interestingly, the quinolinone compound which does not have any spacer between the polymerizable group and the high refractive index group appears to be the most useful one. The lightfastness of the new material fulfills the demands for IOLs. Quinolinone derivatives are promising new comonomers for high refractive index copolymers.
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Reference：
Thiazole | C3H9557NS – PubChem,
Thiazole | chemical compound | Britannica