O phenol faʻafuaseʻi ma se tert-butyl (X = tert-butyl) ma le methyl (R = methyl CH3) i le o-tulaga o le faʻalavelaveina phenolic hydroxyl vaega e mafai ona faʻavaivaia le sili atu faʻalavelave o le faʻalavelaveina phenolic hydroxyl vaega i sina tikeri, ma faʻatelevave le fua faatatau o le tali atu o le antioxidant, ma faʻapea ona faia ai le faʻavae fou o le antioxidant taʻalo i se faʻamoemoe e leʻi fuafuaina. Lenei vaʻaiga fou o faʻalavelaveina phenols antioxidant ua faʻaigoaina o le asymmetric hindered phenols antioxidant.
O le asymmetric faʻalavelaveina phenolic fausaga ma se tert-butyl kulupu ma se methyl kulupu i le hydroxyl ortho-tulaga ua lava e puipuia ai ia lava. O le asymmetric na faʻalavelaveina ai le phenolic antioxidant, ma le 2 - methyl - 6 - tertiary butyl phenol pei o le auivi, e le gata o loʻo i ai uiga lautele o le faʻatautaia o vailaʻau oona, ae faʻapea foi ona tuʻufaʻatasia ma le faʻamautuina o le antioxidant ma le teteʻe atu i aafiaga o le paolo. O lea e sili atu manino molimauina faatinoga nai lo le tuʻufaʻatasi symmetrical ituaiga o hindered phenol, ma e talafeagai mo le vevela okesene talosaga.
AN245, AN1790 (faʻapea foʻi ma AN2777) ma le AO80 o mea ia e tolu o le asymmetric e masani ona faʻatamaia ai phenols antioxidants, faʻatasi ai ma le AN245 e pito sili ona faʻaaogaina ma le tau maualalo.
O le 245 e talafeagai lelei mo le vaʻaia o vailaʻau o vailaʻau o vailaʻau oona. I le avea ai o se vailaʻau oona, e faʻaaogaina i le faʻagaioiga ma le tumau o le faʻaleleia o le vevela i se taimi umi o polymers styrene pei o HIPS, MBS ma ABS, inisinia uga e pei o POM ma PA ma polyurethane. O se faʻamalosia filifili filifili foi i le PVC polymerization faʻagasologa. Lenei oloa e leai se aʻafiaga polymer tali, faʻaaogaina mo maualuga aafiaga polystyrene, polyvinyl chloride, mafai ona faʻaopopoina i le monomer luma polymerization.
I se faʻaopopoga i le sapalai o tulaga o pauta masani, e mafai ona matou tuʻuina atu le 35% mea o faʻasalalauina-AN245DW. Ina ua mavae le tele o tausaga o le gaosiga poto masani, o le faʻasalalauina suavai gaosia ma sapalaiina e la matou kamupani e le faigofie ona stratify, ma e faigofie ona faʻasalalauina nai lo le pauta, o le autu autu o vailaʻau faʻaaogaina i le PVC polymerization faʻagasologa.
E masani lava ona e taliaina e faʻafesoʻotaʻi mai matou mo ni fesili!
Imeli: yihoo@yihoopolymer.com
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Taimi Post: Setema-13-2021