Poly(ether ketone ketone) polymer powder having a low volatiles content
US11851526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2018 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Dec 1, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2371/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A PEKK polymer powder, having a d0.9-value less than 150 μm, wherein the PEKK polymer has a Td(1%) of at least 500° C., as measured by thermal gravimetric analysis according to ASTM D3850, heating from 30° C. to 800° C. under nitrogen using a heating rate of 10° C./min. A method for producing a PEKK powder for the use in a method for manufacturing a 3D object, in which the PEKK has a Td(1%) of at least 500° C., as measured by thermal gravimetric analysis according to ASTM D3850, heating from 30° C. to 800° C. under nitrogen using a heating rate of 10° C./min, and the powder has been manufactured by grinding from a coarser powder and has a d0.9-value less than 150 μm, as measured by laser scattering in isopropanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.