Method for producing a carboxyl group containing rubber
US6984681B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Aug 17, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08C1/15
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing a carboxyl group-containing rubber having good vulcanization characteristics and exhibiting good resistance to scorching, continuously and in good yield.A method for producing a dry rubber from a polyvinyl alcohol-containing latex of a carboxyl group-containing rubber by continuously carrying out coagulation, dewatering, washing and drying in a dewatering/drying apparatus of a screw extruder type, characterized in that a coagulating agent containing ammonium borate is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.