Cleaning reactors contaminated with carboxyl containing polymers
US4345949A · kind A · utility
3Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1981 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Jan 30, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymerization reactor surfaces coated with carboxyl containing polymers may be readily cleaned by filling the polymerization reactor with an aqueous solution of a surface active agent and a polyvalent metal salt and heating to remove the polymer coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.