Patent · US Active

Bead polymer made of hard phase with domains of a soft phase

US10793731B2 · kind B2 · utility

1Cited by

1References

20Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Stefan Bernhardt · Offenbach, DE
Thomas Hasskerl · Kronberg, DE
Dirk Poppe · Frankfurt am Main, DE
Stephan Wieber · Karlsruhe, DE

Key dates

Filing date	Apr 12, 2017
Grant date	Oct 6, 2020
Priority date	—
Expiry date	Jun 15, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers.In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.