Method of producing chlorinated rubber
US5143980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Apr 5, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08C19/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing organic solvent-soluble chlorinated rubber is disclosed, which is characterized in that, in the method of chlorinating rubber latex with chlorine gas up to 60 to 75% chlorine content in the aqueous medium as it is, PA0 (A) nonionic or cationic surfactant is added to rubber latex prior to chlorination and then acid is added to perform the acidifying treatment of latex, PA0 (B) rubber latex is chlorinated up to at least not less than 30% chlorine content at a temperature of not higher than 50.degree. C. blocking off the light in the first step of chlorination, and PA0 (C) remaining chlorination is performed while irradiating ultraviolet rays in the second step of chlorination. The chlorinated product is also claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.