Dab tsi yog avobenzone siv rau?

Ib qho yooj yim qhia txog avobenzone

Avobenzone hmoov, tseem hu ua tshuaj pleev thaiv hnub Parsol -1789, yog ib qho ntxhiab tsw dawb rau daj ntseg daj crystalline hmoov uas yog insoluble hauv dej. Nws kuj yog insoluble hauv cov kuab tshuaj, thiab nws tuaj yeem yaj hauv cov kuab tshuaj ester. Cov khoom no yog ultraviolet UVA absorber, thiab ultraviolet absorbers kuj muab faib ua ntau hom. Ntawm lawv, benzophenone ultraviolet absorbers feem ntau tau siv dav hauv cov khoom siv tshuaj pleev thaiv hnub, thiab hom absorber no feem ntau muaj txiaj ntsig zoo rau kev tshawb fawb hauv kev sim. Avobenzone belongs rau chav kawm ntawm benzophenone UV absorbers.

Avobenzone kuj tseem yog ib qho tseem ceeb ntawm cov organic synthesis nruab nrab, cov roj-soluble tshuaj pleev thaiv hnub, thiab cov khoom xyaw uas absorbs UVA rays nyob rau hauv ib tug tag nrho spectrum. Nws yog derivative ntawm Dibenzoylmethane. Nws yog O / W hom me me anionic emulsifier / stabilizer, uas yog tsim nyog rau ntau yam ntawm PH3 mus rau 9 lub tshuab thiab cov tshuab raug.

Synthesis ntawm Avobenzone Powder

Txog tam sim no, cov txheej txheem kev sib txuas ntawm avobenzone feem ntau suav nrog kev sib xyaw ua ke thiab lub cev qhuav dej, Claisen ester condensation method, aldehyde-ketone condensation method, thiab lwm yam.

Piv txwv li, condensation-addition-elimination hydration method yog ib yam khoom tau los ntawm condensation ntawm p-methoxyacetophenone thiab p-tert-butylbenzaldehyde, ua raws li bromine ntxiv, tshem tawm alkyne, thiab thaum kawg hydration. Cov txiaj ntsig ntawm cov zis yog 58 feem pua, tab sis qhov tsis zoo ntawm txoj kev no yog txoj hauv kev ntev, tus nqi kuj tseem siab, thiab cov zis tawm los kuj tsawg heev.

Qhov thib ob yog Claisen ester condensation txoj kev, uas yog ncaj qha cuam tshuam nrog ob lub ntsiab lus ntawm p-methoxyacetophenone thiab methyl p-tert-butyl benzoate, thiab nws cov txiaj ntsig yog 63.6 feem pua. Qhov zoo dua yog tias tus nqi qis thiab kev ua haujlwm tau yooj yim, tab sis qhov tsis zoo yog tias cov txiaj ntsig tau qis dua.

Qhov thib peb yog txoj kev aldehyde-ketone condensation, uas yog ib yam khoom tau los ntawm condensation cov tshuaj tiv thaiv ntawm p-methoxyacetophenone thiab p-tert-butyl benzaldehyde, thiab tom qab ntawd tsim cov cawv, uas yog thaum kawg oxidized. Cov txiaj ntsig ntawm txoj kev no yog 34.6 feem pua, nws qhov zoo dua yog tias nws yooj yim rau kev khiav lag luam, tab sis qhov tsis zoo yog tias tus nqi siab dhau lawm thiab cov zis tawm tsawg heev.

Keeb kwm thiab txheej txheem cej luam

Hnub ci yog ib yam khoom tseem ceeb rau kev ciaj sia ntawm txhua yam hauv ntiaj teb. Qhov tsim nyog ntawm qhov raug tshav ntuj muaj txiaj ntsig zoo rau tib neeg kev noj qab haus huv thiab tuaj yeem txhim kho lub cev muaj zog. Txawm li cas los xij, nws tsis tuaj yeem nthuav tawm rau lub sijhawm ntev. Ua tib zoo saib lub sijhawm. Yog tias koj nthuav tawm cov tawv nqaij mus rau hauv tshav ntuj, nws yuav ua rau tib neeg lub cev raug mob nyob rau hauv irradiation ntawm ultraviolet rays nrog ib tug nruab nrab yoj ntawm 280 ~ 320 nm thiab ultraviolet rays nrog ib tug ntev yoj ntawm 320 ~ 400 nm. Yog li ntawd, txhawm rau tiv thaiv tib neeg lub cev los ntawm kev puas tsuaj los ntawm hluav taws xob ultraviolet, tib neeg tau tsim cov khoom siv tshuaj pleev thaiv hnub uas muaj kev nyab xeeb thiab muaj txiaj ntsig zoo ntawm ultraviolet rays, uas yog siv dav hauv textiles, coatings, sunscreens, tshuaj pleev ib ce, thiab lwm yam khoom kom ua tiav cov hnub tiv thaiv. .

Avobenzone hmoovyog ib qho tshuaj pleev thaiv hnub zoo. Avobenzone, tseem hu ua Bassoon 1789, nws lub npe tshuaj yog 1-(4-tert-butyl phenyl)-3-(4-methoxyphenyl)propane-1, {{ 7}}dione, uas belongs rau chav kawm ntawm benzophenones UV absorber yog ib qho tseem ceeb organic synthesis intermediate. Benzophenone ultraviolet absorber yog ib qho tseem ceeb tshaj plaws ntawm ultraviolet absorbers, thiab cov kev sim qhia tau hais tias hom ultraviolet absorber no muaj txiaj ntsig zoo rau kev tshawb fawb hauv nam ntawm absorbers.

Avobenzone hmoov siv

1. It is a good UV-A (>320nm) hom ultraviolet absorber, uas tuaj yeem thaiv UVA hauv tag nrho cov band (320-400}nm), tuaj yeem tiv thaiv UVA thiab UVB, thiab feem ntau yog siv los tiv thaiv kab mob ntawm daim tawv nqaij los ntawm lub teeb.

2. Nws tuaj yeem cuam tshuam qee yam kab mob ntawm txoj hnyuv. Vim tias cov nyhuv no, daim ntawv thov ntau yam ntawm cov ntshiab avobenzone hmoov tau nthuav dav heev, thiab daim ntawv thov tus nqi ntawm cov khoom kuj tseem txhim kho. Piv nrog rau cov tshuaj chemotherapeutic ib txwm muaj, cov khoom lag luam muaj qhov tshwj xeeb rau cov kab mob tshwj xeeb thiab cov kev mob tshwm sim tsawg dua. Nyob rau tib lub sijhawm, cov tshuaj tiv thaiv rau cov kev mob tshwm sim ntawm cov tshuaj tiv thaiv no kuj muaj cov kev coj ua kom pom tseeb dua.

3. Nws yog ib hom ultraviolet UVA absorber; Qhov nqus wavelength yog li 358nm. Cov tshuaj tsis yog tsuas yog kev sib raug zoo xwb tab sis kuj muaj kev ruaj ntseg zoo thiab cov tshuaj tiv thaiv hnub ci zoo thiab tseem yog cov roj-soluble UVA zoo tshaj plaws (320-400nm) lim. Tsis tas li ntawd xwb, avobenzone, thaum siv ua ke nrog octyl methoxycinnamate, tuaj yeem nce SPF hauv cov tshuaj pleev ib ce thaum tseem txo cov phototoxicity ntawm cov khoom rau ntawm daim tawv nqaij. Cov khoom no feem ntau yog siv los tsim cov tshuaj nplaum, thiab nws cov nyiaj ntxiv yog 1-3 feem pua.

Yuav tiv tauj peb li cas?

Peb yog cov kws tshaj lijavobenzone hmoovtus neeg muag khoom, nrog rau ntau yam khoom zoo thiab cov nqi qis ntawm lub Hoobkas ncaj qha muag, nrog ntau xyoo kev ua haujlwm hauv kev lag luam. Ntxiv nrog rau cov nroj tsuag extracts, peb kuj muaj lwm yam khoom xws li txiv hmab txiv ntoo hmoov, tshuaj pleev ib ce, thiab lwm yam Yog hais tias koj xav paub cov ntaub ntawv hais txog cov khoom no los yog muaj kev xav tau nyob rau hauv no hais txog, koj muaj peev xwm tiv tauj peb tus account manager los ntawm email, thiab peb yuav muaj cov neeg ua haujlwm tshaj lij thaum koj pom cov xov xwm Cov neeg teb rau koj cov lus.

Peb tus email yogella.zhang@huilinbio-tech.com ib. Ntxiv rau txoj kev no, peb kuj muaj kev xaiv ntawm kev tshuaj xyuas ntawm qhov chaw. Yog tias koj muaj sijhawm, koj tuaj yeem tuaj xyuas lub Hoobkas. Peb lub Hoobkas chaw nyob yog Xi'an, Shaanxi Province. Room 706, Building B, Fengze Science thiab Technology Park, No. 170 West Street, Yanta District, City; zoo siab txais tos koj tuaj.