Polyol phosphate

Phosphate polyol yog ib hom tshuaj lom neeg nrog cov mis molecular ntawm po4hr1r2.

cov ntaub ntawv tseem ceeb

Suav lub npe: polyol phosphate

Polyglycerol phosphate

Cov mis mos molecular: po4hr1r2

Cov tsos mob: tsis muaj xim lossis daj pob tshab kua

Lub npe: polyether phosphate

N1, N2 thiab N3 tuaj yeem yog 0 lossis 1, feem.

Lub physicochemical zog ntawm seem no yog raws li nram no:

Polyol phosphates tuaj yeem muab faib ua ob hom: hom A yog polyoxyethylene ether phosphate, uas yog xim av paste; Hom B yog cov muaj nitrogen-muaj polyol phosphate, sib tov ntawm polyhydroxy compounds, uas yog ib tug dub viscous kua. Lub solubility ntawm cov organic phosphoric acid nyob rau hauv dej txo nrog nce R alkyl carbon atom tooj. Ob leeg monoesters thiab diesters ntawm phosphate esters yog acidic thiab tuaj yeem decompose hydrogen ions hauv aqueous tov; Nyob rau hauv alkaline nruab nrab, qhov no decomposition yog ceev. Txawm hais tias nws qeeb dua li polyphosphate, nws yooj yim rau hydrolyze ntawm qhov kub thiab txias thiab alkaline. Tus nqi hydrolysis yog 10 npaug ntawm qhov ntawd hauv nruab nrab nruab nrab. Thaum hydrolysis tshwm sim, corrosion thiab scale inhibition yuav ploj. Cov phosphate tsim tuaj yeem ua ke nrog calcium ions hauv dej los tsim cov calcium phosphate nplai nrog qhov tsawg kawg nkaus solubility.

Folding composition kho kab lus no

Feem ntau, glycerol yog oxidized los ntawm phosphate thiab ces esterified nrog phosphonic acid. Cov tshuaj tiv thaiv oxidation ntawm glycerol yog raws li nram no: sib tov glycerol nrog hmoov caustic soda, cua sov rau 150 ℃ nyob rau hauv kev tiv thaiv ntawm inert gas, thiab ces ntxiv ethylene oxide rau ethylene oxide raws li molar ratio ntawm ethylene oxide rau glycerol ntawm 2: 1, thiab tswj qhov kub ntawm 150-160 ℃. Thaum ethylene oxide ntxiv thiab khaws cia rau ib lub sijhawm (xws li 1.2 h), cov pa oxygen ethylation ntawm glycerol tuaj yeem txiav txim siab ua kom tiav. Hauv cov txheej txheem no, qhov sib ntxiv ntawm caustic soda suav txog li 0.1% ntawm tag nrho cov nyiaj glycerol thiab ethylene oxide. Cov phosphonate esterification ntawm polyoxyethylene ether thiab glycerin tau ua nyob rau hauv lub reactor ntawm huab hwm coj piv ntawm 4.5: 1, preheated rau 50 ℃, thiab ces phosphorus pentoxide maj mam ntxiv rau hauv lub reactor raws li qhov loj piv ntawm phosphorus pentoxide / polyoxyethylene ether glycerol. 1: 1.1 ~ 1.2, thiab qhov kub tsis tshaj 125 ~ 135 ℃. Tom qab phosphorus pentoxide ntxiv, cov khoom nyob rau hauv lub reactor ua pob tshab tom qab tuav rau ib lub sij hawm, uas txhais tau hais tias cov txheej txheem esterification tiav. Ntxiv dej kom txias cov phosphate mus rau qhov xav tau concentration rau standby. Txoj kev hluavtaws yog raws li nram no:

Thaum r-0h + H3PO4 yog r-h2po4 + H20

(R-0) 2po2h + H2O tau npaj los ntawm cua sov 2R OH + H3PO4

Ro-pcl4 + 3H2O reacts rau daim ntawv r-h2po4 + 4hcl

Ethylene glycol, ethylene glycol monoethyl ether, polyoxyethylene ether, glycerol thiab triethanolamine tau rhuab mus rau 75-85 ℃ nyob rau hauv nplawm thiab sib tov, thiab ces phosphorus pentoxide tau maj mam ntxiv. Tom qab phosphorus pentoxide ntxiv, cov tshuaj tiv thaiv kub tau tswj ntawm 130-140 ℃ rau 1-2 teev. dej tau ntxiv kom txias cov khoom phosphoric acid sib tov kom ncav cuag qhov kev cia siab rau kev sim. Qhov piv ntawm cov tshuaj reactants yog triethanolamine, thiab cov tshuaj tiv thaiv zoo tshaj plaws yog 60: 40 ~ 40: 60 (qhov sib piv loj). Qhov zoo tshaj plaws huab hwm coj piv ntawm ethylene glycol, ethylene glycol monoether thiab polyoxyethylene ether glycerol yog 1: 4: 4. Ethylene glycol monoethyl ether tuaj yeem muab ntxiv rau hauv ob zaug, ib qho ntxiv ua ke nrog ethylene glycol thiab polyoxyethylene ether glycerin ua ntej cov tshuaj tiv thaiv, thiab lwm yam yog ntxiv rau lub sijhawm tuav ntawm 140 ℃.

Kaw kho cov qauv zoo rau kab lus no

Xa mus rau cov kev cai uas tau teev tseg hauv kev lag luam tus qauv hg2228-91

qhov project

qhov ntsuas

Khoom ntsiab lus% ≥ tsib caug

Tag nrho cov ntsiab lus phosphorus (xws li PO4)% ≥ peb caug

Muab xam los ntawm PO4 cov ntsiab lus ≥ kaum tsib

PH (1% aqueous tov) 2.0-3.0

Kev txheeb xyuas txoj kev folding kho cov ntu no

Kev ntsuas tau ua raws li txoj kev teev tseg hauv hg2228-91 tus qauv.

Chav kawm ib cov khoom muaj Organic phosphonates (xws li cov organic mono thiab bisphosphonates) thiab phosphorus pentoxide (ua inorganic phosphoric acid nrog dej), uas tuaj yeem titrated tsis tu ncua los ntawm txoj kev nruab nrab.