DELAYED ACTION CATALYSTS FOR DUAL CURE ADDITIVE MANUFACTURING RESINS

Provided herein is a dual cure resin useful for the production of an object by additive manufacturing, comprising or consisting essentially of: (a) a photoinitiator; (b) not more than 5, 10 or 20 ppm of a polyurethane catalyst (e.g., tin, tertiary amine, bismuth, zinc, zirconium, or nickel catalysts...

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Bibliographic Details
Main Author Wright, Andrew Gordon
Format Patent
LanguageEnglish
Published 28.10.2021
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Provided herein is a dual cure resin useful for the production of an object by additive manufacturing, comprising or consisting essentially of: (a) a photoinitiator; (b) not more than 5, 10 or 20 ppm of a polyurethane catalyst (e.g., tin, tertiary amine, bismuth, zinc, zirconium, or nickel catalysts); (c) a polyol; (d) free (i.e., unblocked) polyisocyanate; and (e) blocked polyisocyanate, the isocyanate groups of which are blocked by reaction with an amine (meth)acrylate blocking agent. Methods of making an object with the resin are also provided.
Bibliography:Application Number: US202117234019