Method for purifying methacrylic acid

Method for purifying methacrylic acid

  • CN 104,024,208 A
  • Filed: 12/26/2012
  • Published: 09/03/2014
  • Est. Priority Date: 01/05/2012
  • Status: Active Application
First Claim
Patent Images

1. a process for purification for methacrylic acid, use toxilic acid concentration be the following and acrylic acid concentration of 2000 quality ppm be rough methacrylic acid below 2000 quality ppm as raw material, making slurry temperature is that-10~

  • 10 DEG C of partial crystallizations that carry out methacrylic acid operate.

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