Desktop Metal, Inc.

Saint-gobain Performance Plastics Corporation

Ilya L Rushkin

Emanuel Michael Sachs

Christopher Benjamin Renner

Yun Bai

Shannon Lee Taylor

David W House

Vimal K Pujari

David C DeCoster

Robert J Nick

Gwo S Swei

Pawel Czubarow

Olivier Guiselin

Rojendra Singh

John Reidy

Methods of additive manufacturing using noble metals and/or copper metal, and binder compositions for use during the additive manufacturing methods, are generally described. In some instances, the methods of additive manufacturing include de-binding (and in some cases sintering steps) that afford metal-based composites, de-bound metal structures, and metal objects containing noble metals (e.g., silver, gold, platinum) and/or copper that have improved properties, such as relatively high densities. In certain aspects, combinations of certain metal powders (e.g., noble metal and/or copper powders) with certain binder compositions may result in improved properties of resulting metal objects produced by the additive manufacturing process, such as relatively low surface roughnesses. The binder compositions described may include a low molecular weight polymer (e.g., including an acrylic acid repeat unit) and, in some cases, a cross-linking agent.

Additive manufacturing techniques using noble metals and/or copper metal and related methods and compositions

The present invention generally relates to compositions comprising a binder and a metal powder, and associated methods. Some compositions provided include a polymer and a metal powder. Some compositions provided include a binder formulation and a metal powder. The binder formulation generally includes a first liquid and a polymer. The binder formulation may be a solution. The polymer may include a nitrogen-containing repeat unit. The metal powder may include a noble metal. Some methods provided include combining a metal powder with a binder formulation. Methods provided include but are not limited to additive manufacturing processes and injection molding processes.

Compositions comprising a binder and a powder, and associated methods

Methods of additive manufacturing, binder compositions for additive manufacturing, and articles produced by and/or associated with methods of additive manufacturing are generally described.

Binder compositions for additive manufacturing comprising low molecular weight polymers including acrylic acid repeat units

Binder composition for additive manufacturing

A method of preparing an article includes compressing a polymeric material to form a body and hot isostatic pressing (HIP) the body in an inert atmosphere at a pressure of at least 3 ksi without an encapsulant. The body may optionally be sintered prior to hot isostatic pressing (HIP). The body may have a porosity of not greater than 8% prior to hot isostatic pressing (HIP). The polymer material may be a non-melt processible polymer.

Method of forming an article from non-melt processible polymers and articles formed thereby

A composite material includes a polyimide matrix material and an exfoliated graphite material dispersed within the polyimide matrix material. The composite material exhibits a Thermal Stability Index of at least about 20 and has a particle distribution in which 90% of the particles have a particle size not greater than 500 micrometers.

Thermally stable composite material formed of polyimide

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Acton, MA, United States of America

Ilya L Rushkin