Gerald R Cook

US Patent:

48449709, Jul 4, 1989

Filed:

Jan 12, 1988

Appl. No.:

7/142980

Inventors:

Joel E. Goldstein - Allentown PA
John G. Iacoviello - Allentown PA
Gary G. Hawn - Wescosville PA
Gerald R. Cook - Wyomissing PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

B32B 2700
C08L 3900

US Classification:

428198

Abstract:

A crosslinkable anionic binder composition which comprises an emulsion copolymer containing acrylamidoglycolic acid (AGA) and a zirconium III salt of an alpha or beta hydroxycarboxylic acid, the pH of the composition being from about 1. 5 to 4. 5. Provided are nonwoven binder compositions which are stable for extended periods prior to application of the binder composition onto the nonwoven substrate and initiation of crosslinking by application of heat.

US Patent:

44475705, May 8, 1984

Filed:

Mar 1, 1982

Appl. No.:

6/353445

Inventors:

Gerald R. Cook - Wyomissing PA
John G. Iacoviello - Allentown PA
Robert K. Pinschmidt - Allentown PA
George Davidowich - Allentown PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

B32B 516
D04H 158

US Classification:

524127

Abstract:

A binder composition for nonwoven fabrics which comprises (a) a fugitive base salt of a phosphate ester surfactant or a carboxylate surfactant, (b) a latex comprising a vinyl acetate-ethylene-olefinically unsaturated carboxylic acid interpolymer colloidally suspended in water, the interpolymer containing about 0. 5 to 7. 0 weight percent olefinically unsaturated carboxylic acid and sufficient ethylene to provide the interpolymer with a glass transition temperature of from about -30. degree. to +20. degree. C. , and (c) a polyvalent metal complex compound comprising a polyvalent metal ion and counter ions or ligands which hinder interaction of the polyvalent metal ion with the carboxylate and phosphate groups of the surfactant and interpolymer at room temperature, but at elevated temperature permit such interaction because the counter ions or ligands are expelled or are replaced by the anionic group of the surfactant and interpolymer. Nonwoven fabrics, particularly diaper innerliners, bonded with such binder compositions possess good dry and wet tensile strengths and good low rewet properties.