Sheet or web carrying an antistatic layer
US4828927A · kind A · utility
13Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Apr 21, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A sheet or web comprising a substrate which is composed of or coated with a hydrophobic resin and carries an antistatic layer, characterized in that the antistatic layer consists essentially of a blockcopolyetherester of dibasic carboxylic acid(s) esterified with ethylene glycol and with a polyoxyethylene glycol having an average molecular weight in the range 1,000 to 10,000, at least 20% by weight of such blockcopolyetherester being constituted by polyoxyethylene-ester chain parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.