COPOLYMERS FOR 3D PRINTING
First Claim
Patent Images
1. A copolymer for use in 3D printing comprising:
- about 1 to about 45 mole percent of a diacid monomer unit;
a diol monomer unit; and
a terephthalate monomer unit;
wherein the copolymer has a glass transition temperature (Tg) in a range from about 50°
C. to about 95°
C.
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Abstract
A copolymer for use in 3D printing includes about 1 to about 30 mole percent of a diacid monomer unit, a diol monomer unit, and a terephthalate monomer unit, the copolymer having a glass transition temperature (Tg) in a range from about 50° C. to about 95° C.
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Citations
20 Claims
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1. A copolymer for use in 3D printing comprising:
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about 1 to about 45 mole percent of a diacid monomer unit; a diol monomer unit; and a terephthalate monomer unit; wherein the copolymer has a glass transition temperature (Tg) in a range from about 50°
C. to about 95°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of making a copolymer comprising:
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copolymerizing in the presence of a catalyst a mixture comprising; a diacid monomer unit; a diol monomer unit; and a depolymerized polyethylene terephthalate; wherein copolymerizing is conducted at a temperature in a range from about 150°
C. to about 220°
C.; andremoving any excess diol monomer unit under reduced pressure. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method of 3D printing comprising:
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providing a copolymer for use in 3D printing comprising; about 10 mole percent to about 30 mole percent of a diacid monomer unit; about 10 mole percent to about 40 mole percent a diol monomer unit; and about 45 mole percent to about 55 mole percent a terephthalate monomer unit; extruding the copolymer to provide a filament; and supplying the filament to a heated nozzle to apply the copolymer to a substrate to form 3D object on the substrate.
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Specification