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:
Sep. 26, 1978
Filed:
Jun. 23, 1977
Applicant:
Inventors:
Robert E Erickson, Midland, MI (US);
Richard M Krajewski, St. Louis, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428224 ; 128156 ; 264 451 ; 264 50 ; 428310 ; 428314 ; 428340 ; 428341 ; 428342 ; 428913 ; 521905 ; 521149 ; 521 64 ;
Abstract
Water swellable aerated films and laminates, made from solutions of carboxylic polyelectrolytes, together with methods for their preparation, are disclosed. The films and laminates are cured and/or crosslinked with a polyfunctional or difunctional crosslinking agent that is reactive with carboxylate groups by heating and/or removing substantially all of the water and/or alcohol from the precursor composition. The solutions are mechanically aerated prior to the curing step. The absorbent articles have a rapid water absorbency rate and are useful as components in diapers, tampons, dressings and the like.