Polyphenylene sulfide polymer compositions and corresponding laser welding applications
US11794417B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Oct 14, 2019 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Oct 14, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/001
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Described herein are polyphenylene sulfide (“PPS”) polymers having excellent transparency to infrared (“IR”) radiation. It was surprisingly discovered that PPS polymer composition including PPS polymers having a selected metal ion (Ca, K, and Mg) concentration at least 400 parts per million by weight (“ppm”), had significantly increase IR transparency, relative to corresponding PPS polymer compositions including a PPS polymer having a selected metal ion concentration less than 400 ppm. Additionally, described herein are methods for laser welding the PPS polymer compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.