1,3-Dimethylurea CAS 96-31-1

Theophylline yog ib qho derivative ntawm methylxanthine, uas muaj cov teebmeem xws li lub plawv lub zog, diuresis, dilation ntawm coronary hlab ntsha, so ntawm bronchial du nqaij, thiab excitation ntawm lub hauv paus paj hlwb. Hauv kev kho mob, theophylline feem ntau yog siv los kho mob hawb pob, mob hawb pob, mob ntsws asthmatic, obstructive pulmonary emphysema thiab lwm yam mob hawb pob, thiab tseem tuaj yeem siv rau mob hawb pob los ntawm cardiogenic pulmonary edema.

Raws li ib qho ntawm cov khoom siv tseem ceeb rau kev sib txuas theophylline, siab -cov khoom theophylline zoo tuaj yeem ua tau zoo thiab ruaj khov los ntawm cov txheej txheem tshuaj tiv thaiv tshwj xeeb. Daim ntawv thov no tsis tsuas yog ua tau raws li qhov kev thov siab rau theophylline hauv khw muag tshuaj, tab sis kuj tseem muab cov tshuaj muaj zog txhawb rau kev kho mob xws li mob hawb pob bronchial.

Caffeine yog lub hauv nruab nrab lub paj hlwb stimulant uas tuaj yeem ua rau qaug zog ib ntus thiab rov ua kom muaj zog. Caffeine kuj yog cov tshuaj psychotropic uas siv ntau tshaj plaws hauv ntiaj teb, dav siv hauv kev kho mob raws li kev mob me me hauv North America thiab qee lub tebchaws nyob sab Europe. Hauv kev lag luam tshuaj, caffeine feem ntau yog siv los kho neurasthenia thiab coma resuscitation.

Tsis tas li ntawd, caffeine kuj muaj cov nyhuv analgesic thiab tuaj yeem ua ke nrog lwm cov tshuaj los txhim kho cov nyhuv analgesic. Nws ua lub luag haujlwm tseem ceeb hauv kev sib txuas ntawm caffeine thiab tuaj yeem npaj tau zoo los ntawm txoj hauv kev tshwj xeeb tshuaj tiv thaiv. Daim ntawv thov no tsis tsuas yog txhawb nqa ntau yam ntawm drgs hauv thaj chaw tshuaj, tab sis kuj muab cov kev xaiv tshiab rau kev kho mob xws li neurasthenia.

Nificalan hydrochloride yog ib qho kev sib xyaw nrog cov tshuaj tshwj xeeb, feem ntau yog siv hauv kev kho mob los kho qee yam kab mob plawv. Cov txheej txheem synthesi kuj tso siab rau nws txoj kev koom tes. Los ntawm kev tswj cov tshuaj tiv thaiv cov tshuaj tiv thaiv, siab -purity Nificalan hydrochloride tuaj yeem npaj tau, muab cov tshuaj muaj zog rau kev kho mob plawv.

Nyob rau hauv xyoo tas los no, nrog rau kev mob qog noj ntshav ntau zuj zus, kev tshawb fawb thiab kev txhim kho ntawm kev tiv thaiv - mob qog noj ntshav tau dhau los ua ib qho ntawm qhov kub kub hauv kev kho mob. Muaj cov kev tshawb fawb qhia tias qee cov urea tebchaw muaj peev xwm tiv thaiv - mob qog noj ntshav. Txawm hais tias muaj kev tshawb fawb me me ntawm nws cov kev tiv thaiv ncaj qha rau - mob qog noj ntshav, txiav txim siab tias nws yog nyob rau hauv chav kawm urea, kev kawm txog nws cov tshuaj tiv thaiv - mob qog noj ntshav kuj muaj qee qhov tseem ceeb. Cov kws tshawb fawb niaj hnub tshawb nrhiav cov peev txheej hauv kev kho mob qog noj ntshav, vam tias yuav muab cov tswv yim tshiab thiab cov hau kev kho mob qog noj ntshav.

Ntxiv nrog rau kev siv los ua cov khoom siv raw rau cov tshuaj synthesi, nws kuj tuaj yeem kawm raws li cov neeg nqa tshuaj. Los ntawm kev hloov kho tshuaj lom neeg tshwj xeeb, cov tshuaj molecules tuaj yeem ua ke nrog lawv los tsim cov khoom siv tshuaj nrog cov phiaj xwm tshwj xeeb thiab tso tawm cov yam ntxwv. Lub tshuab nqa tshuaj no tuaj yeem tsis tsuas yog txhim kho bioavailability thiab stability ntawm drgs, tab sis kuj ua tiav cov tshuaj xa thiab tswj kev tso tawm, yog li txhim kho kev kho mob thiab txo cov kev mob tshwm sim.

Nyob rau hauv cov txheej txheem ntawm cov tshuaj synthesi, kev txhim kho synthesi efficiency yog tus yuam sij rau txo cov nqi thiab nce yields. Cov kws tshawb fawb tau txuas ntxiv txhim kho cov synthesi efficiency ntawm drgs uas muaj cov tshuaj no los ntawm optimizing cov tshuaj tiv thaiv kab mob, txhim kho catalysts, thiab lwm yam. Qhov no tsis tsuas yog pab kom tau raws li qhov kev thov siab rau drgs hauv khw muag tshuaj, tab sis kuj txo cov nqi tsim khoom thiab txhim kho kev lag luam.

Nyob rau hauv cov txheej txheem ntawm cov tshuaj synthesi, tiam ntawm los ntawm - cov khoom feem ntau cuam tshuam rau qhov zoo thiab yield ntawm cov khoom. Txhawm rau txo cov tiam ntawm los ntawm- cov khoom lag luam, cov kws tshawb fawb tau ua hauv - kev tshawb fawb tob txog cov tshuaj synthesi cov tshuaj tiv thaiv lawv koom nrog. Los ntawm kev kho cov tshuaj tiv thaiv, xaiv cov kuab tshuaj uas tsim nyog thiab cov catalysts, thiab lwm txoj hauv kev, tus nqi ntawm - cov khoom tsim tawm tau raug txo kom zoo. Qhov no tsis tsuas yog txhim kho qhov zoo ntawm cov khoom, tab sis kuj muab kev yooj yim rau kev ua kom huv thiab kev sib cais tom qab.

Ntxiv nrog rau cov ntawv thov uas tau hais los saum no, nws kuj tuaj yeem kawm ua tus neeg sawv cev tiv thaiv kab mob. Los ntawm kev hloov kho tshuaj tshwj xeeb, nws tuaj yeem hloov mus rau hauv cov tebchaw nrog cov tshuaj tua kab mob. Cov tshuaj tua kab mob no tuaj yeem siv los npaj cov tshuaj tua kab mob, tshuaj tua kab mob thiab lwm yam khoom siv kho mob, muab kev txhawb zog rau kev tiv thaiv thiab kho cov kab mob sib kis.

Nws yog ib qho tseem ceeb nruab nrab rau synthesizing ntau yam tshuaj, cov uas tseem ceeb tshaj plaws yog theophylline thiab caffeine. Theophylline yog ib qho derivative ntawm methylxanthine, uas muaj cov teebmeem ntawm so cov nqaij ntshiv thiab relaxing bronchi. Nws yog tsuas yog siv los kho mob hawb pob, mob ntsws asthmatic bronchitis, obstructive emphysema, thiab lwm yam mob hawb pob. Nws kuj tseem siv tau rau kev mob ntsws asthma los ntawm cardiogenic pulmonary edema.

Caffeine yog lub hauv nruab nrab lub paj hlwb stimulant uas tuaj yeem ua rau qaug zog ib ntus thiab rov ua kom muaj zog. Nws yog siv los kho neurasthenia thiab coma rov qab. Tsis tas li ntawd, caffeine feem ntau yog siv los ua ib qho ntawm cov khoom xyaw hauv cov tshuaj antipyretic thiab analgesic thiab cov tshuaj tiv thaiv kab mob khaub thuas.
Thaum synthesizing cov tshuaj no, lawv feem ntau yog siv los ua cov khoom pib lossis cov khoom nruab nrab tseem ceeb, thiab cov khoom kawg tau txais los ntawm cov tshuaj tiv thaiv kab mob. Kev siv dav dav ntawm cov tshuaj no ua rau lawv tseem ceeb hauv thaj chaw ntawm cov tshuaj synthesi.

Nws kuj tuaj yeem siv los ua tus neeg ua haujlwm fiber ntau lossis tus neeg sawv cev crosslinking. Thaum lub sij hawm ua cov fiber ntau, nws tuaj yeem hnov ​​​​mob nrog cov pab pawg ua haujlwm ntawm cov khoom siv fiber ntau los tsim cov tshuaj lom neeg, yog li txhim kho kev ua haujlwm ntawm fiber ntau. Piv txwv li, nws tuaj yeem txhim kho qhov hnav tsis kam, wrinkle tsis kam, thiab dyeing zog ntawm fibers.

Tsis tas li ntawd, nws tseem tuaj yeem siv los ua tus neeg sawv cev crosslinking los txhim kho cov qib crosslinking thiab ruaj khov ntawm cov ntaub ntawv polymer.
Piv nrog cov tshuaj fiber ntau ua cov tshuaj, nws muaj qhov zoo ntawm tsis tsim cov formalin. Formaldehyde yog ib qho kev siv tshuaj tua kab mob, tab sis nws muaj pungent tsw thiab toxicity, ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv thiab ib puag ncig. Thiab nws tsis tsim cov formalin hauv daim ntawv thov, ua rau nws zoo ib puag ncig thiab nyab xeeb.

Nitrocellulose yog ib qho tseem ceeb ntawm cov khoom siv polymer nrog cov yeeb yaj kiab zoo heev - tsim cov khoom, huab cua tsis kam, thiab roj tsis kam. Thaum npaj cov khoom siv nitrocellulose, cov tshuaj colloidal yuav tsum tau ntxiv los txhim kho lawv cov kev ua tau zoo thiab ruaj khov. Nws tuaj yeem siv los ua tus neeg sawv cev colloid rau nitrocellulose, txo nws qhov nro kom yooj yim rau kev tawg thiab yaj hauv cov kuab tshuaj.

Nyob rau tib lub sijhawm, nws tuaj yeem cuam tshuam nrog nitrocellulose los tsim cov tshuaj tiv thaiv kab mob, yog li txhim kho qhov kev sib txuas sib txuas thiab kev ruaj ntseg ntawm cov khoom. Qhov no ua rau cov khoom siv nitrocellulose muaj lub cev zoo dua qub thiab tshuaj lom neeg ruaj khov, uas tuaj yeem ua tau raws li ntau yam kev thov.

Tom qab sib tov nws nrog formalin, yuav tau txais ib qho zoo preservative thiab deodorizer. Qhov sib xyaw no muaj qhov dav -spectrum bactericidal thiab bacteriostatic nyhuv, uas tuaj yeem cuam tshuam kev loj hlob thiab kev tsim tawm ntawm cov kab mob xws li kab mob, pwm, thiab cov poov xab. Yog li ntawd, nws feem ntau yog siv los tiv thaiv- tiv thaiv corrosion thiab tsw ntxhiab hauv thaj chaw xws li zaub mov, tshuaj pleev ib ce, tshuaj, thiab khoom siv tu cev.

Piv nrog rau cov tshuaj preservatives, cov tshuaj preservative tov nrog formalin muaj ib tug dav spectrum ntawm bactericidal kev ua si thiab muaj zog antibacterial nyhuv. Lub caij no, vim nws tsis muaj tshuaj lom, nws muaj kev nyab xeeb dua rau kev siv.

Tau txais cov tshuaj tiv thaiv copolymerization nrog ib hom acrylic resin uas muaj epoxy propyl pawg. Cov tshuaj tiv thaiv copolymerization no tuaj yeem ua los ntawm cov dawb radical polymerization lossis ion polymerization. Thaum lub sij hawm copolymerization txheej txheem, nws cov pab pawg ua haujlwm hnov ​​​​mob nrog epoxy propyl pawg ntawm acrylic resin los tsim cov tshuaj tiv thaiv.

Cov khoom tom qab copolymerization muaj cov khoom zoo heev, xws li lub zog siab, siab toughness, huab cua tsis kam, thiab tshuaj tiv thaiv corrosion. Qhov no ua rau cov khoom siv copolymer dav siv hauv cov teb xws li txheej, nplaum, yas, thiab roj hmab.

Ntxiv nrog rau kev ua haujlwm nruab nrab thiab cov khoom siv raw rau cov tshuaj hluavtaws, muaj lwm yam kev siv tseem ceeb hauv kev siv tshuaj. Piv txwv li, nws tuaj yeem siv los npaj cov tshuaj xws li N, N ` - dimethyl-4- imino violet urea acid. Cov tshuaj no muaj ntau yam kev siv hauv kev lag luam tshuaj, xws li tshuaj tua kab mob, tshuaj tua kab mob, tshuaj tiv thaiv qog, thiab lwm yam.

Tsis tas li ntawd, nws tseem tuaj yeem siv los npaj cov khoom siv tshuaj nrog lub luag haujlwm tshwj xeeb, xws li cov neeg nqa tshuaj, cov neeg tso tawm - txhawb nqa, thiab cov neeg tso tawm tswj tau. Cov ntaub ntawv no tuaj yeem txhim kho cov solubility, kev ruaj ntseg, thiab bioavailability ntawm cov tshuaj, yog li txhim kho lawv cov kev ua tau zoo thiab kev nyab xeeb.

Nws kuj tseem siv tau los ua surfactant. Surfactants yog ib yam khoom uas tuaj yeem txo qhov nro ntawm lub ntsej muag thiab lub ntsej muag ntawm cov kua dej, thiab muaj cov haujlwm xws li ntub dej, dispersing, emulsifying, foaming, thiab defoaming. Vim nws cov qauv tshuaj tshwj xeeb, nws muaj kev ua haujlwm zoo heev thiab dispersibility.

Nyob rau hauv daim ntawv thov ntawm surfactants, lawv yuav siv tau los npaj ntau yam detergents, emulsifiers, dispersants, thiab wetting agents. Cov khoom no tau siv dav hauv lub neej niaj hnub thiab kev tsim khoom lag luam, xws li ntxhua khaub ncaws, ntxuav qhov chaw, npaj cov tshuaj pleev plhu thiab cov tshuab dispersion.

Ntxiv nrog rau cov ntawv sau tseg saum toj no, tseem muaj lwm yam kev siv hauv kev lag luam tshuaj. Piv txwv li, nws tuaj yeem siv los npaj qee yam tshuaj tshwj xeeb xws li nplaim hluav taws, plasticizers, thiab anti{1}} cov tshuaj tiv thaiv zoo li qub. Cov tshuaj no muaj ntau yam kev siv hauv teb xws li plastics, roj hmab, coatings, thiab textiles.

Ntxiv rau,1,3-dimethylurea hmoovKuj tseem siv tau los npaj qee cov khoom siv, xws li cov ntaub ntawv photosensitive, cov khoom siv hluav taws xob, thiab cov khoom siv thermosensitive. Cov ntaub ntawv no muaj peev xwm siv tau rau hauv thaj chaw xws li electronics, optoelectronics, thiab kev hnov ​​​​lus.