Process for preparing particles of polyphenylene sulfide polymer
US12247099B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Jan 5, 2024 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Jan 5, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2467/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process for preparing particles of polyphenylene sulfide polymer (PPS), based on the use of a polyester polymer (PE) comprising units from a dicarboxylic acid component and a diol component, wherein at least 2 mol. % of the diol component is a poly(alkylene glycol). The process comprises the melt-blending of the PPS with the PE, the cooling the blend and the recovery of the particles by dissolution of the PE into water. The present invention relates to PPS particles obtained therefrom and to the use of these particles in SLS 3D printing, coatings and toughening of thermoset resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.