Hot water precipitation of resins containing maleic anhydride
US4355157A · kind A · utility
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7Claims
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Key dates
| Filing date | Dec 22, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Dec 22, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F6/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of precipitating a copolymer comprising maleic anhydride from a solution comprising an organic solvent, the method comprising mixing a solution of an organic solvent and a copolymer of maleic anhydride and a monomer copolymerizable therewith with hot water and agitating the resulting mixture for a sufficient period of time and at a sufficiently high shear rate to yield precipitated particles of said copolymer that are substantially free of internal organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.