Tus neeg sawv cev tshem tawm tus neeg sawv cev pabcuam yog tsim los ntawm tus neeg sawv cev dispersant thiab ntub dej hauv qhov piv ntawm 1:10-10:1. Txoj kev npaj muaj cov kauj ruam hauv qab no:
(1) Cov phenylethyl phenol formaldehyde resin yog ntxiv rau hauv lub thawv polymerization, tom qab ntawd cov catalyst ntxiv, thiab cov nitrogen yog tshuab rau lub tshuab nqus dej;
(2) Cov ethylene oxide tau txhaj tshuaj tas li ntawm 140 ~ 170 degree. Tom qab ntawd, me me molecules thiab volatile teeb meem raug tshem tawm los ntawm kev laus thiab decompression, thiab tom qab ntawd neutralized thaum kub qis dua 100 degree los tsim phenylethyl phenol formaldehyde resin polyoxyethylene ether;
(3) Cov khoom yog esterified nrog tus neeg sawv cev esterification;
(4) Tom qab cov tshuaj tiv thaiv esterification tiav lawm, neutralize nws nrog organic puag. Thaum tus nqi pH nce mus txog 6 ~ 8, tshem cov dej, thiab lim nws kom tau cov khoom tawg.
(5) Sib tov cov dispersant thiab wetting tus neeg sawv cev npaj rau hauv cov kauj ruam saum toj no hauv kev faib ua feem.