Synthetic polymer films and fibers rendered permanently anti-static
US4336685A · kind A · utility
8Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1981 |
| Grant date | Jun 29, 1982 |
| Priority date | — |
| Expiry date | Mar 30, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Anti-static polymeric films, fibers and textile yarn produced by process comprising admixing a branched chain, sulfur-containing polyester with a synthetic film- or fiber-forming polymer, extruding said film or textile fiber, and exposing said film or textile fiber to an aqueous solution containing a polyvalent metal ion reactive with the sulfate groups present in said sulfur-containing polyester. The sulfur-containing polyester is thereby fixed within the synthetic film or fiber and is resistant to extraction by water or commonly used dry cleaning solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.