Flame retardant fiber blend containing fibers which if present apart from the admixture undergo burning
US4035542A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1974 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | May 16, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/444
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An assemblage of fibers is provided which exhibits highly satisfactory flame retardant characteristics in spite of the fact that discrete fibers are included within the admixture which would normally burn when exposed to flame. Included in intimate physical admixture with the fibers which would normally undergo combustion are discrete additive fibers consisting primarily of a chlorinated and/or brominated aromatic polymer having the inherent ability to render the admixture as a whole non-burning when subjected to the flame. Particularly preferred additive fibers are formed primarily of an aromatic polyester formed from the reaction of tetrabromobisphenol A, isophthalic acid, and terephthalic acid or the esterforming derivatives thereof. Also, in a particularly preferred embodiment a minor concentration of an oxide of antimony (e.g. antimony trioxide or antimony pentoxide) is intimately dispersed throughout the additive fibers. Flame retardant fiber blends readily may be formed without a diminution of the textile properties thereof, e.g. hand and aesthetic appeal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.