Blowing catalyst compositions containing hydroxyl and surface active groups for the production of polyurethane foams

Blowing catalyst compositions containing hydroxyl and surface active groups for the production of polyurethane foams

  • CN 1,837,186 B
  • Filed: 03/17/2006
  • Issued: 02/06/2013
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. method of producing catalyst composition may further comprise the steps:

  • Equipped with Teflon one In the 500ml three neck round-bottomed flasks of the magnetic stirring bar of coating and a pressure equilibrium dropping funnel, add the Triethylenetetramine (TETA) that 100g commerce can be purchased;

    This amine is heated to 80 ℃

    under nitrogen supercharging, with 2-ethylhexyl glycidyl ether slow adding in the flask in 30 minutes of 60.2g;

    In adition process, can be observed the heat release of appropriateness, cause temperature to be elevated to 84 ℃

    ;

    When add finishing, with mixture heating up to 120 ℃

    , and kept this temperature 30 minutes;

    The collection product also distills under vacuum and removes unreacted TETA;

    Thick product is dissolved in the methyl alcohol and with the 5%Pd/C catalyzer of 20g puts into a reactor;

    This reactor with the hydrogen pressurising, and is heated to 80 ℃

    ;

    Slowly add formalin and detect simultaneously hydrogen-pressure;

    Add finish after, with reaction remain on 80 ℃

    30 minutes;

    Filtering product, generates and contains N-[2-hydroxypropyl-2-(ethylhexyl)-ether by removing the first alcohol and water in the product by distillation]-N, N '"'"', N ", the N " mixture of '"'"' pentamethyl-Triethylenetetramine (TETA).

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