Ihe mgbochi phenol nwere tert-butyl (X = tert-butyl) na methyl (R = methyl CH3) na o-ọnọdụ nke otu phenolic hydroxyl na-egbochi nwere ike imebi ihe mgbochi nke otu phenolic hydroxyl na-egbochi ruo n'ókè ụfọdụ, ma mee ka mmeghachi omume antioxidant dị ngwa, si otú a na -eme ka usoro ọhụrụ nke antioxidant na -arụ ọrụ na -atụghị anya ya. Ọdịdị ọhụrụ a nke ihe na -egbochi antioxidant phenols a na -akpọ antioxidant phenols na -egbochi asymmetric.
Otu asymmetric gbochiri usoro phenolic ya na otu tert-butyl na otu methyl na hydroxyl ortho-position zuru ezu iji chebe onwe ya. Ihe mgbochi asymmetric gbochiri antioxidant phenolic, yana 2 - methyl - 6 - butyl phenol tertiary butyl phenol dị ka ọkpụkpụ, ọ bụghị naanị nwere njiri mara nke ihe na - egbochi antioxidant phenolic, kamakwa na - ahazi na nkwụsi ike antioxidant inyeaka na iguzogide mmetụta ndò. Yabụ na ọ nwere arụmọrụ pụtara ìhè karịa ụdị symmetrical ọdịnala nke phenol na -egbochi, ọ dịkwa mma maka ngwa ikuku oxidation.
AN245, AN1790 (yana AN2777) na AO80 bụ antioxidants atọ a na -egbochi asymmetric na -egbochikarị, nke gụnyere AN245 bụ nke a na -ejikarị na ọnụ ala.
AN 245 dabara nke ọma maka stereoobstructing antioxidants phenolic nke polymer organic. Dị ka antioxidant, a na-eji ya na nhazi na nkwalite nkwụsi ike ogologo oge nke polymer styrene dị ka HIPS, MBS na ABS, plastik injinịa dị ka POM na PA na polyurethane. Ọ bụkwa onye na -ejikọ eriri dị irè na usoro polymerization PVC. Ngwaahịa a enweghị mmetụta na mmeghachi omume polymer, nke ejiri maka polystyrene nwere mmetụta dị elu, polyvinyl chloride, enwere ike ịgbakwunye ya na monomer tupu polymerization.
Na mgbakwunye na ọnọdụ ọkọnọ nke ntụ ntụ nkịtị, anyị nwere ike ịnye ọdịnaya 35% nke mgbasa-AN245DW. Mgbe ọtụtụ afọ nke ahụmịhe nrụpụta, mmiri mgbasa nke ụlọ ọrụ anyị mepụtara ma nye adịghị mfe ịhazi, ọ dịkwa mfe ịgbasa karịa ntụ ntụ, nke bụ isi antioxidant ejiri na usoro polymerization PVC.
A na -anabata gị mgbe niile ịkpọtụrụ anyị maka ajụjụ!
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Oge ezipụ: Sep-13-2021