Fenolisiyo ikumirwa hamwe na tert-butyl (X = tert-butyl) na methyl (R = methyl CH3) kuri o-umwanya witsinda rya hydroxyl ya fenolike yabujijwe irashobora guca intege inzitizi zikomeye zitsinda rya hydroxyl ya fenolike yabujijwe kurwego runaka, no kwihutisha igipimo cya antioxydeant reaction, bityo bigatuma imiterere mishya ya antioxydeant ikina ingaruka zitunguranye. Iyi miterere mishya ya antioxydeant ya fenoline yabujijwe yitwa asimmetric hindered phenols antioxidant.
Asimmetric yabujije imiterere ya fenolike hamwe na tert-butyl hamwe nitsinda rya methyl kuri hydroxyl ortho-position irahagije kugirango yirinde. Asimmetric yabujije antioxydants ya fenolike, hamwe na 2 - methyl - 6 - ya gatatu ya butyl fenol nka skeleton, ntabwo ifite gusa ibimenyetso rusange biranga antioxydants ya fenolike ibuza gusa, ahubwo inahuza na antioxydants yingirakamaro hamwe no kurwanya ingaruka zicucu. Ifite rero imikorere igaragara kuruta ubwoko bwa simmetrike ya gakondo ya fenoline ikumirwa, kandi irakwiriye gukoreshwa na okiside yumuriro.
AN245, AN1790 (kimwe na AN2777) na AO80 nizo eshatu zikunze kugaragara cyane za asimmetrike zibangamira antioxydants ya fenol, muri zo AN245 niyo ikoreshwa cyane hamwe nigiciro gito.
AN 245 irakwiriye cyane cyane muburyo bwa stereoobstructing antioxydants ya fenolike ya polymers kama. Nka antioxydeant, ikoreshwa mugutunganya no kumara igihe kirekire ituze ryumuriro wa styrene polymers nka HIPS, MBS na ABS, plastike yubuhanga nka POM na PA na polyurethane. Ninumurongo mwiza urangiza mubikorwa bya PVC polymerisation. Iki gicuruzwa nta ngaruka kigira kuri reaction ya polymer, ikoreshwa muburyo bukomeye polystirene, polyvinyl chloride, irashobora kongerwa kuri monomer mbere ya polymerisation.
Usibye gutanga ibintu byifu isanzwe, turashobora gutanga 35% yibirimo byo gutatanya-AN245DW. Nyuma yimyaka myinshi yuburambe ku musaruro, amazi yo gutatanya yakozwe kandi atangwa nisosiyete yacu ntabwo byoroshye gutondekanya, kandi biroroshye gutatanya kuruta ifu, niyo antioxydants nyamukuru ikoreshwa mugikorwa cya PVC polymerisation.
Buri gihe urahawe ikaze kutwandikira kugirango ubaze ibibazo!
Imeri: yihoo@yihoopolymer.com
TEL: 17718400232
Igihe cyo kohereza: Nzeri-13-2021