Process for preparing products containing polymer chains having ionic links and their use
US4362837A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1981 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Mar 23, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G85/004
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Viscous, homogeneous and thermoreversible gels containing polymer chains are obtained by a process in which a solution of a prepolymer or polymer which contains at least one free acid group at each chain end in a non polar solvent selected among the aliphatic, alicyclic and aromatic hydrocarbons having a dielectric constant of less than about 3 is reacted at room temperature with a stoechiometric amount, based on the acid group content of the polymer, of a metal aliphatic alkoxide so as to neutralize all the free acid groups and a sufficient amount of the non polar solvent is distilled for removing, in a substantially quantitative manner, the aliphatic alcohol formed by said reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.