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US 12,655,540 B2Granted
3D printing with enhanced interlayer adhesion
AssigneeRohm and Haas Company
InventorsManoj Nerkar, Richard J. Ketz, Ian J. Drake
Life of this patent
Estimating the term…
Abstract
A filament for three-dimensional printing comprises a thermoplastic resin and an acrylic polymer additive in an amount ranging from 0.1 to 20 parts per hundred of the thermoplastic resin (phr). A 3D printed article prepared from the filament and a process for preparing filament for three-dimensional printing are also disclosed.
Claims18
A filament for three-dimensional printing comprising:
- a thermoplastic resin;
- and
- an acrylic polymer additive in an amount ranging from 0.1 to 20 parts per hundred of the thermoplastic resin (phr);
- wherein the thermoplastic resin is selected from the group consisting of polylactic acid (PLA), polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), poly trimethylene terephthalate PTT, polybutylene terephthalate (PBT), polyamide (nylon), polyvinyl alcohol (PVA), polystyrene (PS), high impact polystyrene (HIPS), and blends thereof;
- wherein the acrylic polymer additive comprises an acrylic copolymer that is the reaction product of methyl methacrylate monomers and at least one additional monomer selected from ethyl (meth)acrylate and butyl (meth)acrylate monomers;
- and
- wherein the acrylic polymer additive comprises at least 45 wt. % of units derived from the methyl methacrylate based on the total weight of the acrylic polymer additive.
4 more elements
A process of preparing filament for three-dimensional printing comprising:
- combining a thermoplastic resin and an acrylic polymer additive to form a blend, wherein the acrylic polymer additive is present in an amount ranging from 0.1 to 20 parts per hundred of the thermoplastic resin (phr);
- and
- extruding the blend in the form of a filament;
- wherein the thermoplastic resin is selected from the group consisting of polylactic acid (PLA), polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), poly trimethylene terephthalate PTT, polybutylene terephthalate (PBT), polyamide (nylon), polyvinyl alcohol (PVA), polystyrene (PS), high impact polystyrene (HIPS), and blends thereof;
- wherein the acrylic polymer additive comprises an acrylic copolymer that is the reaction product of methyl methacrylate monomers and at least one additional monomer selected from ethyl (meth)acrylate and butyl (meth)acrylate monomers;
- and
- wherein the acrylic polymer additive comprises at least 45 wt. % of units derived from the methyl methacrylate based on the total weight of the acrylic polymer additive.
4 more elements
Dependencies are inferred from the claim text.