Process for making vinyl caprolactam-based polymers
US6225429A · kind A · utility
13Cited by
9References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 1, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F226/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process of making a vinyl caprolactam (VCL)-based polymer which comprises suspension polymerizing the monomers in aqueous medium in the absence of an added protective colloid, wherein polymer formed at an early stage of the polymerization functions as a dispersing agent to maintain polymer particles suspended in water throughout the polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.