The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 1996
Filed:
May. 24, 1994
Applicant:
Inventors:
Robert H Tang, Murrysville, PA (US);
William A Williams, Jr, Latrobe, PA (US);
Assignee:
PPG Indutstries, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06M / ; D06M / ;
U.S. Cl.
CPC ...
252-86 ; 8120 ; 81271 ;
Abstract
A composition and method for providing a non-formaldehyde durable press finish to cellulosic fabrics by employing phosphonoalkylpolycarboxylic acids are disclosed. The phosphonoalkylpolycarboxylic acid is optimally used in combination with another polycarboxylic acid, such as polyacrylic acid, and/or, for cost effectiveness, a low-cost polycarboxylic acid such as citric acid. The catalyst for the curing reaction is optimally a phosphorus-containing acid or alkali metal salt thereof, such as a mixture of sodium monophosphate and sodium hypophosphite.