Hydantoin polyamide-poly(oxyethylene) block copolymers as antistatic additives for polyamides
US4053441A · kind A · utility
5Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Nov 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to hydantoin polyamide-poly(oxyethylene) block copolymers which have good thermal stability and an increased hydrophilicity of the polyamide blocks, and which can be used as an additive to polyamides, resulting in improved antistatic properties of the polyamides. The formula for a typical copolymer is: ##STR1## IN WHICH X IS 2 TO 5, Y IS ABOUT 23, AND Z IS 2 TO 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.