Polyacrylonitrile (PAN) polymers with low polydispersity index (PDI) and carbon fibers made therefrom
US10189985B2 · kind B2 · utility
1Cited by
1References
9Claims
0Family size
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Key dates
| Filing date | Mar 16, 2018 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Mar 16, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.