Flame retardant compositions with low formaldehyde content
US12320062B2 · kind B2 · utility
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2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2016 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Aug 4, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2200/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The instant invention relates to a composition useful as a precursor for imparting flame-retardant properties to textile articles, comprising a condensate of: (a) a tetrakis (hydroxyorgano) phosphonium sulfate THPS; (b) urea, or alternatively thiourea; (c) optionally, and preferably, an aliphatic hydroxyl-reactive compound, such an amine wherein said composition has a very low free formaldehyde content, namely of less than 0.1%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.