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:
Nov. 05, 1996
Filed:
Nov. 04, 1992
Applicant:
Inventor:
Catherine L Cheong, Burnley, GB;
Assignee:
Johnson & Johnson Medical, Inc., Arlington, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61L / ; A61F / ; C08J / ; C08G / ;
U.S. Cl.
CPC ...
424445 ; 424443 ; 424447 ; 521117 ; 521130 ; 521159 ; 602 46 ; 206440 ; 53425 ; 53426 ;
Abstract
A polyurethane foam suitable for use as a wound-contact layer in a wound dressing is made by mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 1.2 meq NCO groups/g with from 0.4 to 1.0 parts by weight of water in the presence of from 0.05 to 0.4 parts by weight of a C.sub.1 to C.sub.3 monohydric alcohol, and then drying the product. The monohydric alcohol is preferably methanol, and the isocyanate-capped prepolymer is preferably an isocyanate-capped ethyleneoxy/propyleneoxy copolymer.