Reactive particulate materials useful for additive manufacturing
AssigneeCarbon, Inc.
InventorsJustin Poelma, Mu San Zhang, Xinyu Gu, Jason P. Rolland, Joseph M. DeSimone
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Abstract
Provided herein are methods of making a reactive particulate material by free radically polymerizing a single-cure resin to produce a polymer, the resin comprising: a reactive blocked polyurethane prepolymer, a reactive blocked polyurea prepolymer, a reactive blocked polyurethane-polyurea copolymer, or a combination thereof, wherein said polymerizing is carried out by dispersive polymerization (e.g., an emulsion, suspension or dispersion polymerization process), to form said reactive particulate material. Methods of use of the reactive particulate material and material sets including the same are also provided.
Claims17
A method of making a reactive particulate material, comprising:
- free radically polymerizing a single-cure resin to produce a polymer, wherein said resin is solely polymerized by light polymerization, the resin comprising more than 90% by weight of:
- (i) a reactive blocked polyurethane prepolymer, a reactive blocked polyurea prepolymer, a reactive blocked polyurethane-polyurea copolymer, or a combination thereof, and (ii) optionally a monofunctional reactive diluent;
- wherein said resin optionally further comprises:
- (iii) a photo-initiator,
- wherein said reactive blocked polyurethane prepolymer, reactive blocked polyurea prepolymer, reactive blocked polyurethane-polyurea copolymer, or combination thereof is blocked with a tertiary amine-containing (meth)acrylate selected from t-butylaminoethyl methacrylate (TBAEMA), tertiary pentylaminoethyl methacrylate (TPAEMA), tertiary hexylaminoethyl methacrylate (THAEMA), tertiary-butylaminopropyl methacrylate (TBAPMA), acrylate analogs thereof, and mixtures thereof,
- wherein said resin does not include a chain extender for heat and/or microwave polymerization of a thermally reactive component of the reactive blocked polyurethane prepolymer, reactive blocked polyurea prepolymer, or reactive blocked polyurethane-polyurea copolymer, and
- wherein said polymerizing is carried out by dispersive polymerization, to form said reactive particulate material.
A reactive particulate material produced by a method comprising:
- free radically polymerizing a single-cure resin to produce a polymer, wherein said resin is solely polymerized by light polymerization, the resin comprising more than 90% by weight of:
- (i) a reactive blocked polyurethane prepolymer, a reactive blocked polyurea prepolymer, a reactive blocked polyurethane-polyurea copolymer, or a combination thereof, and (ii) optionally a monofunctional reactive diluent;
- wherein said resin optionally further comprises:
- (iii) a photo-initiator,
- wherein said reactive blocked polyurethane prepolymer, reactive blocked polyurea prepolymer, reactive blocked polyurethane-polyurea copolymer, or combination thereof is blocked with a tertiary amine-containing (meth)acrylate selected from t-butylaminoethyl methacrylate (TBAEMA), tertiary pentylaminoethyl methacrylate (TPAEMA), tertiary hexylaminoethyl methacrylate (THAEMA), tertiary-butylaminopropyl methacrylate (TBAPMA), acrylate analogs thereof, and mixtures thereof,
- wherein said resin does not include a chain extender for heat and/or microwave polymerization of a thermally reactive component of the reactive blocked polyurethane prepolymer, reactive blocked polyurea prepolymer, or reactive blocked polyurethane-polyurea copolymer, and
- wherein said polymerizing is carried out by dispersive polymerization, to form said reactive particulate material.
Dependencies are inferred from the claim text.