Fitting for joining tubes and method of joining tubes

Fitting for joining tubes and method of joining tubes

  • CN 105,518,029 A
  • Filed: 09/02/2014
  • Published: 04/20/2016
  • Est. Priority Date: 09/02/2013
  • Status: Active Application
First Claim
Patent Images

1. one kind is carried out the method for catalyzed oxidation to Mierocrystalline cellulose;

  • the method adopt heterocycle nitroxyl free radical as catalyzer and primary oxidizers as oxygen source;

    it is characterized in that, described method comprised before described cellulosic catalyzed oxidation carries out pre-treatment to described Mierocrystalline cellulose as follows;

    In alkaline pre-treatment step, with the basic solution of hydroxide concentration higher than 0.3M, described Mierocrystalline cellulose is processed, and-in cleaning step, the Mierocrystalline cellulose through processing in described basic solution is cleaned, thus pH is reduced.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×