Ib txoj kev npaj ntawm hindered amine teeb stabilizer thiab nruab nrab
PATENT NUMBER: ZL201710408973.2
TSAB NTAWV
Txoj kev npaj ntawm hindered amine teeb stabilizer N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl)-N, N '-diuronic alkyl diamine yog raws li nram no: 4-formamide-2,2 ,6, 6-tetramethylpiperidine thiab dibromothane tau nplawm los ntawm reflux thiab catalyst rau 1-24h, thiab dej tau ntxiv maj mam tam sim ntawd.Cov khoom tau txais tom qab nplawm, txias, ntxuav, lim, thiab ziab.
Ntawm lawv, txoj kev npaj ntawm intermediate 4-formamide-2,2,6, 6-tetramethylpiperidine yog: 2,2,6, 6-tetramethylpiperidine, formamide, Lewis acid catalyst, khi alkali tus neeg sawv cev, tau muab tso rau hauv cov cua kub cov tshuaj tiv thaiv nyob rau hauv atmospheric. siab rau 1-24h.Cov khoom tau txais tom qab nplawm, txias, ntxuav, lim, thiab ziab.
Cov txheej txheem synthesis ntawm qhov kev tsim yog yooj yim thiab yooj yim rau kev khiav lag luam, thiab tom qab kev kho mob yog yooj yim;cov khoom siv raw, catalysts thiab cov kuab tshuaj yuav tsum tau yooj yim kom tau.Tag nrho cov txheej txheem yog ua raws li cov qauv kev lag luam, kev nyab xeeb thiab ib puag ncig tus phooj ywg, thiab cov khoom lag luam tawm los yog siab.
Ib txoj kev npaj ntawm hindered amine ultraviolet absorber
PATENT NUMBER: ZL201910576883.3
TSAB NTAWV
Lub invention nthuav tawm ib txoj kev npaj ntawm blocked amine uv absorber: sib tov malonic acid thiab pentamethylpiperidol, ntxiv toluene li hnyav, ntxiv catalyst, thiab react ntawm 100 ℃ -110 ℃ rau 6h.Cov tshuaj tiv thaiv tau nres thaum cov ntsiab lus malonic acid qis dua 1%.Muab qhov kub thiab txias rau 50 ℃, ntxiv dej deionized, do rau 30min, tom qab ntawd ntxiv cov nyiaj txaus ntawm cyclohexane nrog anisaldehyde, do thiab yaj, ntxiv piperidine thiab acetic acid, kub txog 70 ℃ -80 ℃ rau cov tshuaj tiv thaiv, thiab cais cov dej generated. nyob rau hauv cov txheej txheem tshuaj tiv thaiv.Cov tshuaj tiv thaiv tau nres thaum cov ntsiab lus anisaldehyde qis dua 1% hauv cov kua theem.Cov tshuaj tiv thaiv tau txias rau 5 ℃ thiab nplawm rau 1h kom txog thaum cov khoom sib cais tag nrho.Tom qab pom, cov tshuaj tiv thaiv tau purified nrog 3 zaug ntawm ethanol thiab tau txais cov khoom.
Qhov kub ntawm qhov hindered amine uv absorber nyob rau hauv cov txheej txheem npaj tsis siab tshaj 110 ℃;cov tshuaj tiv thaiv kev kho mob me me;cov txheej txheem tshuaj tiv thaiv yog yooj yim los tswj;thiab cov khoom purity yog siab;Cov tshuaj tiv thaiv thaum ntxov tsis yog rhiab rau cov dej, thiab tsuas yog yuav tsum tau tso dej tawm hauv qhov system thaum cov tshuaj tiv thaiv ze rau kev ua tiav, uas txuag cov txheej txheem ua haujlwm.
Cov khoom thiab cov txheej txheem kev npaj ntawm ib tug multi-effect thiether bisphenol acrylat antioxidant
PATENT NUMBER: ZL201910569404.5
TSAB NTAWV
Phenol acrylate multi-effect antioxidant molecules muaj ob lub ntsiab ntawm hindered phenol antioxidant functional pawg, auxiliary antioxidants thioether daim ntawv cog lus thiab carbon capture dawb radicals muaj nuj nqi ntawm acrylic phenolic ester qauv, uas coj nyob rau hauv lub triple nyhuv syncretic nyob rau hauv ob qho tib si ntau lawm thiab siv cov ntaub ntawv polymer.Qhov no yuav muaj kev tiv thaiv zoo dua cov ntaub ntawv polymer, zam cov khoom degradation thiab kev laus, daws qhov kev ua haujlwm tsis zoo thaum ib qho kev ua haujlwm antioxidant yog siv rau ntawm cov ntaub ntawv polymer.Lub caij no, cov txheej txheem kev npaj cov tshuaj tiv thaiv kub thiab kev siv hluav taws xob tsawg, thiab cov khoom siv lim tuaj yeem raug tshem tawm yam tsis muaj dej khib nyiab, thiab rov siv cov kuab tshuaj, yog li cov txheej txheem yog eco-friendly.
Ib txoj kev npaj rau siab purity pentaerythritol yas auxiliary
PATENT NUMBER: 201910447473.9
TSAB NTAWV
Lub invention nthuav tawm ib txoj kev npaj rau lub siab purity pentaerythritol yas auxiliary, nyob rau hauv uas cov kauj ruam yog raws li nram no: sib tov haumxeeb Cheebtsam thiab pentaerythritol, tshav kub txog 100-150 ℃ thiab do rau 15min;ntxiv dioctyl tin oxide, cua sov rau 170-190 ℃ tom qab nitrogen tshem tawm, txuas ntxiv cov tshuaj tiv thaiv kom txog rau thaum cov kua theem tshawb pom cov khoom cov ntsiab lus tsis nce ntxiv;txo qhov kub thiab txias mus rau 150 ℃, ntxiv xylene, txuas ntxiv txo qhov kub thiab txias mus rau 100 ℃, tom qab ntawd ntxiv cov tshuaj molecular monic acid aqueous tsawg, do ntawm 100 ℃ rau 1h, poob rau hauv chav tsev kub;ntxiv methanol, do rau 3-5h, thiab cov khoom ntxhib tau lim kom tau txais cov khoom ntshiab tom qab rov ua kom rov ua kom zoo nrog toluene.
Tom qab cov tshuaj tiv thaiv tiav lawm, cov qis-molecular-monic acid tau ntxiv ncaj qha rau hauv cov reactant kom ua tiav cov tshuaj tiv thaiv esterification nrog cov khoom siv displaceable thiab trisubstituted impurities hauv cov reactant, thiaj li yaj cov impurities thiab cais lawv ntawm cov khoom.Txoj kev tsis tas yuav siv ntau cov kuab tshuaj thiab ntau yam kev ua haujlwm recrystallization, thiab muaj cov nyhuv impurity tshem tawm zoo.
Ib txoj kev npaj ntawm 6,6,12, 12-tetramethyl-6, 12-dihydroindene [1,2-b] fluorene
PATENT NUMBER: ZL201610332457.1
TSAB NTAWV
Lub invention nthuav tawm ib txoj kev npaj ntawm 6,6,12, 12-tetramethyl-6, 12-dihydroindene [1,2-b] fluorene.
Cov txheej txheem suav nrog: kev sib txuas cov tshuaj tiv thaiv: methyl o-bromobenzoate yog ua ke nrog 9, 9-dimethyl su-2-boric acid los tsim cov tebchaw raws li qhia hauv Formula M-1;Ntxiv cov tshuaj tiv thaiv: cov tshuaj muaj nyob rau hauv Formula M-1 yog ntxiv nrog methyl magnesium bromide, thiab tom qab ntawd hydrolyzed los ua cov compound qhia hauv mis M-2;Cyclization cov tshuaj tiv thaiv: nyob rau hauv lub xub ntiag ntawm acid, cov compound qhia nyob rau hauv mis M-2 yog cyclized thiab hloov mus rau hauv 6,6,12, 12-tetramethyl-6, 12-dihydroindene [1,2-b] fluorene raws li qhia nyob rau hauv mis M. .
Raws li txoj kev npaj ntawm qhov invention, cov txheej txheem yog yooj yim thiab yooj yim rau kev khiav lag luam;Cov khoom siv raw uas xav tau yog nkag tau yooj yim ntawm tus nqi qis;Cov txiaj ntsig yog 77 ~ 88%, haum rau cov khoom loj.
