Polyether-derived polyurethane foam impregnant and method of application
US4224374A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Nov 21, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249981
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A unique substantially non-flammable impregnant for polyether-derived polyurethane foam substrates is disclosed. The impregnant is characterized by a carboxylated neoprene latex and an alumina trihydrate. It can be further characterized by a diammonium hydrogen phosphate, urea, a magnesium-zinc complex, a surfactant and water. A method for applying the impregnant to the mentioned substrate is also disclosed. That method is characterized by depositing the impregnant on the substrate, impregnating and curing it, and recovering a substantially non-flammable product. That impregnated polyether-derived polyurethane foam product can be configurated as a laminate and adhered to some other substrate. Articles like mattresses and cushions can be advantageously fabricated using the unique impregnant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.