A kind of take storng-acid cation exchange resin as the preparation technology of catalyst synthesizing propylene tert-butyl acrylate

A kind of take storng-acid cation exchange resin as the preparation technology of catalyst synthesizing propylene tert-butyl acrylate

  • CN 103,073,426 B
  • Filed: 02/04/2013
  • Issued: 03/30/2016
  • Est. Priority Date: 02/04/2013
  • Status: Active Grant
First Claim
Patent Images

1. be a preparation technology for catalyst synthesizing propylene tert-butyl acrylate with storng-acid cation exchange resin, it is characterized in that carrying out successively as follows:

  • 1) join in closed reactor by vinylformic acid, storng-acid cation exchange resin, stopper A, stopper B, the iso-butylene dropwise adding liquefaction carries out esterification, and the temperature of esterification is-20 ~ 40 DEG C;

    The iso-butylene time for adding of liquefaction is 1.5-4 hour;

    2) after being added dropwise to complete, be incubated, soaking time is 6-8 hour;

    3) be incubated complete, by closed reactor release, filter, extracting liquid component enters rectifying tower;

    4) the by product trimethyl carbinol, diisobutylene and target product tert-butyl acrylate is isolated successively;

    Described stopper A is ethers stopper, and stopper B is phenolic inhibitor;

    The consumption (mass fraction) of described each raw material;

    storng-acid cation exchange resin;

    20-50 part, vinylformic acid;

    the iso-butylene of 280-360 part, liquefaction;

    300-560 part, stopper A;

    10-30 part, stopper B;

    1-10 part.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×