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Radiation curable resin composition and rapid three-dimensional imaging process using the same

  • US 8,501,033 B2
  • Filed: 03/12/2010
  • Issued: 08/06/2013
  • Est. Priority Date: 03/13/2009
  • Status: Active Grant
First Claim
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1. A liquid radiation curable resin comprising:

  • (A) from about 0 to about 12 wt % of a cycloaliphatic epoxide having a linking ester group;

    (B) from about 30 to about 65 wt % of one or more epoxy functional components, wherein element (B) is not the same as element (A);

    (C) from about 10 to about 30 wt % of one or more oxetanes;

    (D) from about 1 to about 10 wt % of one or more polyols;

    (E) from about 2 to about 20 wt % of one or more radically curable (meth)acrylate components;

    (F) from about 2 to about 12 wt % of one or more impact modifiers;

    (G) from about 0.1 to about 8 wt % of one or more free radical photoinitiators; and

    (H) from about 0.1 to about 8 wt % of one or more cationic photoinitiators;

    wherein the one or more epoxy functional components other than (A) comprises from about 0.25 wt % to about 1.0 wt % of a mono-functional epoxy with an ethylhexyl chain; and

    wherein the liquid radiation curable resin has a viscosity at 30°

    C. of from about 200 cps to about 1300 cps.

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