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Stereolithography resin for rapid prototyping of ceramics and metals

  • US 6,117,612 A
  • Filed: 10/08/1997
  • Issued: 09/12/2000
  • Est. Priority Date: 04/24/1995
  • Status: Expired due to Term
First Claim
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1. A process for the preparation of a multi-layer ceramic green body, comprising:

  • a) selecting an aqueous photopolymerizable ceramic resin comprising;

    i) from 40 to about 80 volume percent of one or more sinterable powders;

    ii) one or more photopolymerizable monomer(s);

    iii) an effective amount of a photoinitiator; and

    iv) a dispersant;

    wherein said photopolymerizable ceramic resin has a viscosity at 25°

    C. of less than 3000 mPa·

    s;

    b) coating a substrate with a first layer of said photopolymerizable ceramic resin;

    c) irradiating at least a portion of said layer with an energy source effective to activate said photoinitiator and induce photopolymerization of said layer to form a polymerized ceramic layer;

    d) coating said polymerized ceramic layer with a further layer of photopolymerizable ceramic resin;

    e) irradiating said further layer with an energy source effective to activate said photoinitiator and induce photopolymerization of said further layer to form a further polymerized ceramic layer;

    f) repeating steps d) and e) until a green ceramic body of a desired size and shape has been obtained.

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