Coating composition for a fibrous nonwoven sheet of polyolefin
US4082887A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | May 14, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2918
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
There is disclosed a coating composition which when applied on a fibrous nonwoven sheet of polyolefin and dried provides a sheet having antistatic properties, high water barrier and antislip properties. The composition consists essentially of (a) an effective amount of a water-insoluble wax which is dispersible in water at a concentration of 10% by weight based on the total amount of wax and water, the wax requiring for dispersion in water only a nonionic surfactant or a mixture of two or more nonionic surfactants in an amount of at least 15% and not more than 100% by weight based on the amount of wax, the nonionic surfactant having a hydrophilic-lipophilic balance of from about 6-10; (b) an effective amount of an antistat having the formula M.sub.n R.sub.3-n PO.sub.4 where M is a lithium, sodium, potassium or ammonium ion, R represents an alkyl group containing from 3-5 carbon atoms, and n is 1 or 2; (c) a nonionic surfactant having a hydrophilic-lipophilic balance of from about 6-10, the surfactant being present in an amount of from about 15-100% by weight based on the amount of wax; (d) a water-insoluble binder resin capable of wetting the polyolefin sheet, having a Tg of from a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.