Dsm IP Assets B.v.

Jigeng Xu

Timothy Edward Bishop

John Alan Lawton

John Edmond Southwell

Paulus Antonius Maria Steeman

Kangtai Ren

Jens Christoph Thies

Marco Marcus Matheus Driessen

John Edmund Southwell

Aylvin J A A Dias

Richard Thomas

Michelle Elizabeth Seitz

Gordon Smith

Xiaorong You

David L Winmill

Willem D Weenink

Ken Dake

Micha Sandor Nicolaas Hubert Mulders

Sam East

Micha Mulders

Aylin Jorge Angelo Athanasius Dias

A method and apparatus for additive fabrication which provides a substrate which helps the newly hardened resin layer to separate from the substrate while providing a substrate of appropriate strength and durability. In an embodiment, the substrate is a multi-layer substrate comprising a transport layer and a structural layer, the transport layer comprising a polyolefin or a fluoropolymer, and the structural layer comprising a semi-crystal line thermoplastic polymer.

Substrate-based additive fabrication process and apparatus

The invention relates to a radiation curable composition comprising from about 50 wt % to about 70 wt % of a cycloaliphatic diepoxide, from about 5 wt % to about 15 wt % of a polyol, from about 5 wt % to about 15 wt % of an oxetane, from about 10 wt % to about 20 wt % of an aromatic diacrylate, a radical photoinitiator and a cationic photoinitiator. The invention further relates to a process for making a three dimensional article from the resin composition of the invention, to the three-dimensional article itself and to the use of the composition of the invention.

Photo-curable resin composition

The invention relates to a substrate-based method for forming a three-dimensional object by additive fabrication by coating a liquid radiation curable resin comprising from 30 to 80 wt % of cationically curable compounds on a substrate, contacting the liquid radiation curable resin with a previously cured layer, selectively exposing the layer of liquid radiation curable layer to actinic radiation thereby forming a cured layer, separating the cured layer at the substrate, and repeating the steps a sufficient number of time in order to build up a three-dimensional object.

Substrate-based additive fabrication process

Waste reduction, including hazardous waste reduction in photoimaging processes can be accomplished by improving diffusional resolution of cationic curable compositions. The addition of fluorinated polymers including fluorinated surfactants provides improved diffusional resolution in cationic and/or radical based photoimaging formulations allowing for image accuracy improvements, and reduced product and process waste quantity and disposal cost. These fluorinated surfactants also allow for increased cure speed, and non-hazardous constituent formulations that result in less wasted material and time.

Method and composition for reducing waste in photo-imaging applications

The invention relates to a radiation curable composition comprising relative to the total weight of the composition (A) 0&#x2013;29 wt % of a cationically curable component having a linking aliphatic ester group, (B) 10&#x2013;85 wt % of an epoxygroup containing component other than A, (C) 1&#x2013;50 wt % of an oxetanegroup containing component, (D) 1&#x2013;25 wt % of a multifunctional acrylate and a radical photoinitiator and a cationic photoinitiator.

Radiation curable resin composition and rapid prototyping process using the same

Growing community of inventors

South Elgin, IL, United States of America

Jigeng Xu