Process for producing biocompatible polyisoprene-polyurethane in

Details Process for producing biocompatible polyisoprene-polyurethane in Process for producing biocompatible polyisoprene-polyurethane in

1997-06-18

1998-07-28

Zitomer, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 95, 525127, 525130, 5253332, 525385, 525387, 525903, C08L 7504, C08L 7506, C08L 7508

Patent

active

057864250

ABSTRACT:
Interpenetrating polymer networks (IPN's), composed of polyisoprene (PI) and polyurethane (PU), together with a process for their preparation and their use in the manufacture of medical devices, such as catheters and catheter balloons, are disclosed. Both components are elastomers. The PI component is chemically crosslinked. The PU component is crystallizable and contains only physical crosslinks. The IPN's have glass transition temperatures in the range of from -65.degree. C. to -40.degree. C.

REFERENCES:
patent: 3980595 (1976-09-01), Schonfeld
patent: 5087514 (1992-02-01), Graefe
patent: 5162414 (1992-11-01), Hung
R.J. Lewis, Sr., "Hawley's Condensed Chemical Dictionary", 12th Ed., (1993)935,936,1131, Van Nostrand (New York).

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