Bicompatible polyisoprene-polyurethane interpenetrating polymer

Details Bicompatible polyisoprene-polyurethane interpenetrating polymer Bicompatible polyisoprene-polyurethane interpenetrating polymer

1997-06-18

1998-07-21

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...

525127, 525130, 525903, 604 93, 604 96, 604 99, C08L 7504

Patent

active

057836337

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

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