- Author
-
Coleman, D.
- Title
- Flame-Retardant Acrylonitrile Polymers.
- Coporate
- American Cyanamid Co., Stamford, CT
- Report
-
U.S. Patent 3,582,258
June 1, 1971
3 p.
- Keywords
-
acrylonitriles
|
flame retardants
- Abstract
- Acrylic fibers having improved flame-retardancy and good luster comprising an acrylonitrile polymer combined with 2.0-15.0% of an aziridinylphosphine oxide or sulfide based on the weight of fiber. Such fibers are made by applying a solution of an aziridinylphosphine oxide or sulfide to fibers of acrylonitrile polymer while such fibers are in the gel state and thereafter heating the treated gel until the aziridinylphosphine compound has chemically combined with the polymer. The preferred aziridinylphosphine compound used is tris-aziridinylphosphine oxide.