Non-formaldehyde durable press finishing for cellulosic textiles with phosphinocarboxylic acid
AssigneePPG Industries, Inc.
InventorsRobert H. Tang, William A. Williams, Jr.
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Abstract
A composition and method for providing a non-formaldehyde durable press finish to cellulosic fabrics by employing polyphosphinocarboxylic acids are disclosed. The polyphosphinocarboxylic acid is preferably polyphosphinoacrylic acid, and is optimally used in combination with phosphonoalkylpolycarboxylic acid, and, for cost effectiveness, a low-cost polycarboxylic acid such as citric acid. The catalyst for the curing reaction is preferably a phosphorus-containing acid or alkali metal salt thereof such as a mixture of sodium monophosphate and sodium hypophosphite.
Claims10
A method for treating cellulose-containing fibrous materials comprising the steps of:
- (a) treating said fibrous material with an aqueous solution comprising (i) polyphosphinocarboxylic acid and (ii) a catalytic amount of esterification catalyst, and
- (b) heating said treated fibrous material at temperatures and for a time sufficient to effect the crosslinking of cellulose in said fibrous material.
Dependencies are inferred from the claim text.