Izvo zvinodzivirirwa phenols ne tert-butyl (X = tert-butyl) uye methyl (R = methyl CH3) pane o-chinzvimbo cheyakavhiringidzwa phenolic hydroxyl boka rinogona kushatisa iyo steric chipingamupinyi cheyakavhiringidzwa phenolic hydroxyl boka kune imwe nhanho, uye kuwedzera mwero weiyo antioxidant reaction, nokudaro ichiita iyo nyowani mamiriro e antioxidant kutamba chisingatarisirwe mhedzisiro. Iyi nyowani dhizaini inodzivirirwa phenols antioxidant inonzi asymmetric inodzivirira phenols antioxidant.
Anymmetric inodzivirira phenolic chimiro ine tert-butyl boka uye methyl boka kuhydroxyl ortho-chinzvimbo chakakwana kuzvidzivirira. Iyo asymmetric yaitadzisa phenolic antioxidant, iine 2 - methyl - 6 - tertiary butyl phenol semafupa, kwete chete ine hunhu hwese hwekutadzisa phenolic antioxidants, asi zvakare inobatana pamwe neyekubatsira antioxidant kugadzikana uye kuramba kune shading mhedzisiro. Saka ine kuita kuri pachena kupfuura kweyakajairwa mhando yeyakavhiringidzwa phenol, uye inokodzera iwo ekushisa ekushisa ekushandisa.
AN245, AN1790 (pamwe neAN2777) uye AO80 ndiwo matatu akajairika asymmetric anotadzisa phenols antioxidants, pakati payo AN245 ndiyo inonyanya kushandiswa nemutengo wakaderera.
AN 245 inonyanya kukodzera stereoobstructing phenolic antioxidants ye organic ma polima. Seye antioxidant, inoshandiswa mukugadzirisa uye kwenguva refu-yakasimba kupisa kusimudzira kwema styrene polima senge HIPS, MBS neABS, mapurasitiki einjiniya akadai sePOM nePA uye polyurethane. Iyo zvakare inoshanda ketani terminator muPVC polymerization maitiro. Ichi chigadzirwa hachina zvazvinoita pama polymer reaction, anoshandiswa kune yakanyanya kukanganisa polystyrene, polyvinyl chloride, inogona kuwedzerwa kune monomer pamberi pe polymerization.
Pamusoro pezve mamiriro ekupa hupfu hwakajairika, isu tinogona kupa 35% zvemukati zvekupararira-AN245DW. Mushure memazana emakore ekugadzirwa kwechiitiko, iyo yakapararira mvura inogadzirwa uye inopihwa nekambani yedu haisi nyore stratify, uye zviri nyore kupararira kupfuura hupfu, inova iyo antioxidant huru inoshandiswa muPV polymerization maitiro.
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Post nguva: Sep-13-2021