<address id="p7tz7"></address>
      <form id="p7tz7"></form>

      佛山市寶林化工實業有限公司

      Foshan Baolin Chemical Industry Co., Ltd.

      How To Make Glyceryl Rosinate?

      Glyceryl Rosinate is the important material for adhesive and food additive. When producing, crushed the rosin into small pieces and add it to the reactor, start heating, glycerol ester and zinc oxide all the time to join the reactor. If the rosin is not melted, stop the stirring. If it melts, continue to stir and continue to warm up to 270°C in 30 minutes, and then in 2h slowly to 290 & lt; 0 & gt; C. 1h before this phase is for the esterification reaction stage, 1h after the reaction gradually slowed down, when reaching 290 , continue to heat up, while opening the valve to steam the excess water and glycerol, volatile matter. And then 0.5h rise to 305 , sampling inspection, acid value below 20, the softening point above 80 , light color and transparent glyceryl rosinate are required.

      Skype
      E-Mail
      TOP

          <address id="p7tz7"></address>
          <form id="p7tz7"></form>

          性无码中文字幕av,明星下海不是梦国产在线,欧美日韩图片区小说区偷拍,日本免费A∨片免费,AI迪丽热巴喷水视频在线观看,国产а∨天堂2019,亚洲日韩看片无码