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:
Apr. 21, 2015
Filed:
Jun. 22, 2005
Applicants:
Pia Frei, Rickenbach, CH;
Andreas Dobmann, Oberkirch, CH;
Judith Nyffeler, Sempach-Stadt, CH;
Inventors:
Assignee:
Nolax AG, Sempach Station, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C 71/04 (2006.01); A61F 15/00 (2006.01); A61L 15/58 (2006.01); A61L 15/60 (2006.01);
U.S. Cl.
CPC ...
A61L 15/58 (2013.01); A61L 15/60 (2013.01);
Abstract
A hot-melt formulation useful as a wound dressing comprises a chemically crosslinked polymer matrix obtainable from prepolymers crosslinkable by means of photopolymerization. Hydrocolloids are embedded in the chemically crosslinked polymer, matrix. The formulation is obtainable by combining the prepolymers and hydrocolloids, and heating and processing the mixture through a slot die, wherein the mixture has a viscosity of less than 100 Pa*s and a processing temperature of less than 150° C. The prepolymers are crosslinked by means of photopolymerization by irradiation with UV light.