Points are awarded for the polymerization of type 5 dispersants by suspension method
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This post was last edited by clq20040107 on 2011-8-8 at 11:05. Is the hydroxypropyl methylcellulose produced by Shandong Ruitai useful for the production of PVC Type 5 using the suspension method? How effective is it? Those who have used HPMC(60RT50) and HPMC(65RT50), please share your experiences. Thank you! ! ! ! ! ! !
I heard that import dispersants are set to see price increases recently; domestic dispersants deserve attention
Reply to 3# wang*neng: Yes, the price of imported goods rises by tens of thousands per ton; we plan to use domestic products instead. Those who have used it, please share your experiences.
The quality of the dispersants produced by Shandong Ruitai is very stable; our factory has been using them for over a decade now
This post was last edited by clq20040107 on 2011-8-8 at 11:05. Our factory has been using Ruitai’s HPMC, and no decline in quality due to dispersion has occurred
We use: the dispersant from Nihon Kabushiki Kaisha. That thing is good; I haven’t tried the domestic version yet, so I don’t know how it is.
I’ve used the cellulose from Shandong Heda; it’s okay. Ruitai has done this here before, but it wasn’t used
I’m using cellulose from Shandong Heda, and the results are pretty good
In cellulose-grade dispersions, either Heda or Ruitei can be used, as the total amount added is very small; since it is not a primary dispersant, it will not have a significant impact. As the main dispersant, whether imported or domestically produced, what matters is stable quality, so that the polymerization system can remain stable.
Reply to 1# Yifuyunyi: For the current composite dispersant systems, the domestically produced methyl cellulose has acceptable quality, and since a small amount is required, there is no need to use imported versions; however, domestically produced polyvinyl alcohol is not yet very stable
Now many agency companies mix imported PVA with domestically produced PVA and sell the mixture to chlor-alkali enterprises in China, but there are differences in quality; one factor is the uniformity of the particles, and the other is the degree of modification through low alcoholysis. Cellulose can now be produced domestically. What the people upstairs said makes sense; both Heda and Ruitai offer good performance, but there are differences, which can be seen by looking at their prices.