Process for the manufacture of phosphorus-containing condensation products, the products and their use as flameproofing agents
US4185037A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1978 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Nov 24, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M15/431
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The subject of the invention is a process for the manufacture of polycondensation products of hydroxymethylphosphonium compounds and an amine, characterized in that (a) 1 mol of a tetrakis-(hydroxymethyl)-phosphonium compound is condensed with 0.02 to 0.3 mol, preferably 0.02 to 0.25 mol, of an amine at 100.degree. to 150.degree. C., optionally in the presence of an inert organic solvent, if appropriate free hydroxyl groups are at least partially etherified with at least one alkanol with 1 to 4 carbon atoms and if appropriate the salts of the polycondensation products are converted into the corresponding hydroxides. The condensation products are used for flameproofing organic fiber material, especially textiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.