Method for production of absorbent polymer
US5124416A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Apr 23, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/182
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the production of an absorbent polymer by the polymerization of a liquid containing an aqeous hydrophilic monomer solution in a reaction vessel provided with at least one rotary stirring blade, which comprises polymerizing said hydrophilic monomer in a reaction vessel wherein, at least a portion of the inner wall surface of said reaction vessel repeatedly exposed to said aqueous solution or said absorbent polymer and a gas has the surface roughness, R.sub.max, thereof adjusted to not more than 3 .mu.m and at the same time said portion of the inner wall of surface is kept cooled constantly to a temperature of not more than 70.degree. C. from behind said portion with a cooling medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.