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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.:

US 9000089 B1

PDFFull Text
Date of Patent:
Apr. 07, 2015

Filed:

Feb. 13, 2009

Polyurea systems, processes for preparing the same and use thereof for postoperative adhesion barriers

Applicants:

Heike Heckroth, Odenthal, DE;

Hartmut Nefzger, Pulheim, DE;

Christian Wamprecht, Neuss, DE;

Inventors:

Heike Heckroth, Odenthal, DE;

Hartmut Nefzger, Pulheim, DE;

Christian Wamprecht, Neuss, DE;

Assignee:

Medical Adhesive Revolution GmbH, Aachen, DE;

Attorney:

Drinker Biddle & Reath LLP

Primary Examiner:

Patrick Ryan

Assistant Examiner:

Aaron Greso

Int. Cl.
CPC ...
C08G 18/08 (2006.01); C08G 69/44 (2006.01); C08L 75/00 (2006.01); C08L 77/00 (2006.01); C08L 83/00 (2006.01); D06M 15/643 (2006.01); C08L 79/00 (2006.01); C08L 73/00 (2006.01); C08L 67/00 (2006.01); C08G 63/60 (2006.01); C09K 3/00 (2006.01); C08G 18/00 (2006.01); C09D 4/00 (2006.01); C09D 201/00 (2006.01); B32B 27/00 (2006.01); B32B 27/40 (2006.01); A61L 15/26 (2006.01); A61L 31/06 (2006.01); C08G 18/10 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/73 (2006.01); C08G 18/76 (2006.01);
U.S. Cl.
CPC ...
A61L 15/26 (2013.01); A61L 31/06 (2013.01); C08G 18/10 (2013.01); C08G 18/4252 (2013.01); C08G 18/4841 (2013.01); C08G 18/485 (2013.01); C08G 18/73 (2013.01); C08G 18/7621 (2013.01);
Abstract

Polyurea systems comprising: (a) an amino-functional aspartic ester of the general formula (I) wherein X represents an n-valent organic radical derived from a corresponding n-functional primary amine X(NH), Rand Reach independently represent an organic radical having no Zerevitinov active hydrogens and n represents an integer of at least 2; and (b) an isocyanate functional prepolymer having a residual monomer content of less than 1% by weight, the prepolymer prepared by reacting: (b1) an aliphatic isocyante; and (b2) a polyol component having a number average molecular weight of ≧400 g/mol and an average OH functionality of 2 to 6, wherein the polyol component comprises one or more constituents selected from the group consisting of polyester polyols, polyester-polyether polyols and mixtures thereof; processes for making the same; postoperative adhesions barriers prepared therewith and dispensing systems for such polyurea systems.

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