Production of vinyl alcohol copolymers
US6818709B1 · kind B1 · utility
12Cited by
0References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2003 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jul 11, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel process is disclosed for the continuous process for making a vinyl acetate/acrylamido copolymer product, employing vinyl alcohol and 2-acrylamido-2-methyl propane sulfonic acid or a salt of such acid (AMPS). The process generally includes feeding with agitation, vinyl acetate and ANTS as a comonomer, a polymerization initiator, and a solvent so as to produce the desired product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.