Copolymers for 3D printing

Patent metadata

Field	Value
Publication number	US-9738752-B2
Application number	US-201514695664-A
Country	US
Kind code	B2
Filing date	Apr 24, 2015
Priority date	Apr 24, 2015
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

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 (T g ) in a range from about 50° C. to about 95° C.

First claim

What is claimed is:

1. A method of 3D printing comprising:
providing a copolymer for use in 3D printing comprising a terpolymer having monomer units:
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.

2. The method of claim 1 , wherein the terephthalate monomer unit is derived from a recycled polyethylene terephthalate.

Assignees

• Xerox Corp

Inventors

• Sacripante Guerino G
• Zhou Ke
• Abukar Tasnim

Classifications

• B29C64/118

  using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title

• C08G63/78

  Preparation processes · CPC title

• B29K2067/003

  PET, i.e. poylethylene terephthalate · CPC title

• C08J11/10

  by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation (depolymerisation to the original monomer C07) · CPC title

• B29C64/106 Primary

  using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material · CPC title