Method for preventing alkylphenol from discoloration

Method for preventing alkylphenol from discoloration

  • CN 101,302,140 B
  • Filed: 05/23/2008
  • Issued: 02/29/2012
  • Est. Priority Date: 05/23/2008
  • Status: Active Grant
First Claim
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1. a method that prevents alkylphenol from discoloration is characterized in that in alkylphenol, adding hindered phenol anti-oxidants as preapring for an unfavorable turn of events colouring stabilizer, and said alkylphenol is p-methyl phenol or ortho-methyl phenol;

  • The said colouring stabilizer of preapring for an unfavorable turn of events is a hindered phenol anti-oxidants 2;

    The 6-di-tert-butyl-4-methy phenol, 2,2 '"'"'-methylene radical-two (4-methyl-6-tert butyl phenol);

    Four (β

    -(3;

    The 5-di-tert-butyl-hydroxy phenyl) pentaerythritol ester propionic acid), the mixture of the arbitrary proportion of one or more in 3-(3, the 5-di-tert-butyl-hydroxy phenyl) the propionic acid octadecanol ester.

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