Thermoplastic polyurethanes modified by siloxane block copolymer

Details Thermoplastic polyurethanes modified by siloxane block copolymer Thermoplastic polyurethanes modified by siloxane block copolymer

1993-12-17

1995-07-04

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 29, 528 25, 525439, 525454, 525464, C08L 7500

Patent

active

054301211

ABSTRACT:
The invention relates to thermoplastic polyurethanes modified with segmented siloxane block copolymers which are based on relatively high molecular weight dihydroxy compounds, diisocyanates, and difunctional chain extenders. The application also relates to their use in the medical field, and particularly as a catheter material.

REFERENCES:
patent: 3562352 (1971-02-01), Nyilas
patent: 3975350 (1976-08-01), Hudgin et al.
patent: 4454309 (1984-06-01), Gould et al.
patent: 4518758 (1985-05-01), Cavezzan et al.
patent: 4647643 (1987-03-01), Zdrahala et al.
patent: 4675361 (1987-06-01), Ward, Jr.

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