Polyamide concentrates containing sulphonate groups
US3957734A · kind A · utility
5Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Aug 7, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to high molecular weight polycaprolactams containing monomeric units of the general formulae (I) and (II): ##EQU1## in which: M is an alkali metal; and PA1 R is an alkylene radical having from 4 to 12 carbon atoms or the radical, ##SPC1## PA1 Where M is as defined above, The polymer having a relative solution viscosity of from 1.1 to 3.5 (as measured on solutions of 1 g of polyamide in 100 ml of m-cresol at 25.degree.C) and containing sulphonate groups in a concentration range of from 40 to 2000 mval per kilogram of polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.