Process for improving polymer substrate properties, and flame retardancy modified polymers produced thereby
US4921890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1987 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Apr 24, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M14/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for improving the flame retardancy, hygroscopic, soil release and other properties of a polymer substrate is provided in which the substrate is contacted with a suitable aqueous mixture containing a water-soluble monomer and an organic halogen-containing hydrophobic carrier compound at a temperature of between about 40.degree. C. to 100.degree. C. Polymerization of the monomer is thereafter initiated by a chemical or physical initiator to form a polymer evenly disposed on the substrate. The flame retardancy, hygroscopic, soil release and other surface properties of the substrate are thereby improved. The mixture may be in the form of an emulsion wherein the hydrophobic carrier compound is emulsified by an appropriate agent. The invention also pertains to the improved substrates prepared in accordance with the present process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.