Stabilization of acrylic fibers and films
Abstract
Abstract AN IMPROVED PROCESS FOR THE THERMAL STABILIZATION OF AN ACRYLIC FIBROUS MATERIAL OR FILM IS PROVIDED. THE FIBROUS PRECURSOR OR FILM IS IMPREGNATED WITH A STABILIZATION PROMOTING AGENT BY CONTACT WITH A SOLUTION OF THE SAME PROVIDED AT A MODERATE TEMPERATURE, DRIED TO REMOVE THE SOLVENT, AND HEATED IN AN OXYGEN-CONTAINING ATMOSPHERE AT A MORE HIGHLY ELEVATED TEMPERATURE UNITL A STABILIZED FIBROUS MATERIAL OR FILM IS FORMED. THE STABILIZATION PROMOTING AGENTS EMPLOYED IN THE PRESENT PROCESS ARE MINERAL ACIDS, SULFONIC ACIDS, AND CERTAIN CARBOXYLIC ACIDS. THE RESULTING STABILIZED FIBROUS MATERIAL OR FILM IS NON-BURNING, AND MAY BE UTILIZED AS A FIRE RESISTANT FIBER, RABRIC, OR FILM, OR OPTIONALLY CARBONIZED OR CARBONIZED AND GRAPHITIZED TO FORM A CARBONACEOUS FIBROUS MATERIAL OR FILM.
Inventors
- 👤 E Chenevey
- 👤 R Kimmel
Bibliographic Details
Claims Analysis
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