Low-viscosity polyurethane acrylate dispersoid

Low-viscosity polyurethane acrylate dispersoid

  • CN 102,695,736 B
  • Filed: 12/13/2010
  • Issued: 10/07/2015
  • Est. Priority Date: 12/19/2009
  • Status: Active Grant
First Claim
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1. preparation is based on the method for the aqueous dispersion of the radiation-hardenable of urethane acrylate (i), and described urethane acrylate comprises following component as structural constituent:

  • A) one or more are selected from the compound of following polymerization;

    polyester (methyl) acrylate, polyethers (methyl) acrylate, polyether ester (methyl) acrylate, have the unsaturated polyester of allyl ether structural unit and have polycyclic oxygen (methyl) acrylate of 15-300 mg KOH/g species range OH valueB) choose any one kind of them or the multiple A of being different from) the monomeric compound with hydroxyl-functional and at least one (methyl) acrylate group,C) one or more are different from A) or the compound with at least one isocyanate-reactive group B),D) one or more organic multiple isocyanates,E) one or more have the compound of at least one hydroxyl-functional and at least one carboxylic-acid functional other or carboxylicesters official energy, and described compound plays dissemination to polyurethane dispersions,F) be different from A)-E) the compound with at least one isocyanate-reactive group,It is characterized in that, make component A)-D) in the first step reactions steps, react the urethane acrylate formed containing ion and latent property ionic group, and according to the NCO content measured reach can with theoretical NCO content deviation at most ±

    nco value of 1.5 % by weight NCO, andIn second step reactions steps, make component E) with derive from component A)-D) and the still free NCO group of reaction product react, and according to the NCO content remeasured reach can with theoretical NCO value deviation at most ±

    nco value of 1.5 % by weight NCO, andIn three-step reaction step, make component F) react with still free NCO group.

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