Polymeric materials
US10166727B2 · kind B2 · utility
2Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jun 19, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/40
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing an object by laser sintering comprises:(i) selecting a powder comprising a polymeric material having a repeat unit of formula —O—Ph—O—Ph—CO—Ph— I and a repeat unit of formula —O—Ph—Ph—O—Ph—CO—Ph— II wherein Ph represents a phenylene moiety; and (ii) selectively sintering the powder to produce the object.It is found that the polymer used can be advantageously recycled and blended with virgin material to produce a blend which has very similar mechanical properties and crystallinity compared to the virgin material. Thus, the polymer may be cost-effectively used in laser sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.