Thromboresistant articles made from polyurethanes containing a polypropylene glycol-ethylene oxide block copolymer
Abstract
Abstract ARTICLES (INCLUDES CONTAINERS, CONDUITS, DEVICES OR MATERIALS) FOR HANDLING (INCLUDES CONTAINING, TRANSPORTING OR CONTACTING) BLOOD AND REDUCING CLOTTING COMPRISING A MIXTURE OF A POLYURETHANE; WITH AT LEAST A SUFFICIENT AMOUNT TO GIVE IMPROVED THROMBORESISTANCE IN THE RANGE OF ABOUT 0.5 TO 20% BY WEIGHT BASED ON SAID POLYURETHANE OF A THROMBORESISTANT POLYMER ADDITIVE WHICH IS A POLYETHYLENE GLYCOL, A POLYPROLYLENE GLYCOL OR A BLOCK COPOLYMER OF THE STRUCTURE HO-(CH2-CH2-O)A-(CH(-CH3)-CH2-O)B-((CH2)2-O)C-H WHEREIN A, B AND C ARE EACH AT LEAST 1 AND REPRESENT THE NUMBER OF MOLES OF THESE GROUPS, AND THE MOLECULAR WEIGHT OF THE POLYMER ADDITIVE IS IN THE RANGE OF ABOUT 500 TO 15,000. THE ARTICLES DESCRIBED IN THE PREVIOUS SENTENCE HAVE IMPROVED NONTHROMBOGENIC (THROMBORESISTANT) PROPERTIES AS COMPARED TO THOSE MADE FROM CONVENTIONAL POLYURETHANES.
Inventors
- 👤 I Salyer
- 👤 A Blardinelli
Bibliographic Details
Claims Analysis
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