Method for manufacturing aramid pulp comprising PVP
US11542660B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Aug 22, 2017 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | May 13, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M15/59
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing an aramid pulp including polyvinyl pyrrolidone (PVP), the method including the steps of: combining para-aramid short-cut with PVP in an aqueous solution to form a mixture, subjecting the mixture to a refining step to form a para-aramid pulp including PVP. It has been found that the process makes it possible to obtain a PVP pulp with improved dewatering properties and energy consumption in combination with a high PVP retention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.