Composite modified phenolic resin preparation method

Composite modified phenolic resin preparation method

  • CN 105,001,387 A
  • Filed: 07/13/2015
  • Published: 10/28/2015
  • Est. Priority Date: 07/13/2015
  • Status: Active Application
First Claim
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1. a preparation method for composite modified alkyd resin, is characterized in that:

  • described method concrete steps are as follows;

    Successively formaldehyde and liquefied carbolic acid are added in reactor, mix at 50 ~ 55 DEG C, drip m 1g ammoniacal liquor, is warming up to 60 ~ 70 DEG C, adds cashew nut shell phenol after the liquid turns turbid in question response device, drips m 2g ammoniacal liquor, is warming up to 75 ~ 80 DEG C, adds epoxy resin, insulation 1 ~ 2h, and underpressure distillation, until evaporated condensation water flows out, is cooled to less than 50 DEG C, adds dehydrated alcohol and regulates solid content to 50 ~ 70%, obtain described composite modified alkyd resin;

    Wherein, the ratio of described formaldehyde, phenol and cashew nut shell phenol amount of substance is 6;

    2;

    3;

    The quality of described epoxy resin accounts for 2% of formaldehyde, phenol and cashew nut shell phenol total mass;

    Described formaldehyde (mol);

    ammoniacal liquor (g)=1;

    25;

    Described m 1and m 2be 1/2 of ammoniacal liquor total mass;

    Described underpressure distillation parameter;

    relative vacuum degree <

    -0.08MPa, temperature is 80 ~ 85 DEG C.

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