Polyamide prepared in the presence of sulfopolyester
US4083894A · kind A · utility
3Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1974 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Dec 26, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing polyamides which comprises polymerizing a polyamide-forming compound selected from the group consisting of .omega.-aminocarboxylic acids, .omega.-lactams and an equimolar mixture of a diamine and a dicarboxylic acid and modifying the polyamide formed in the polymerization by incorporating at least one compound of the formula (I) ##STR1## wherein M represents an alkali metal or an alkaline earth metal; n is an integer of 2 to 4; and m is an integer of 2 or more; before, during or after the polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.