Polyurethane elastomers prepared from difunctional telechelic li

Details Polyurethane elastomers prepared from difunctional telechelic li Polyurethane elastomers prepared from difunctional telechelic li

1995-11-27

1996-12-31

Teskin, Fred M.

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

Synthetic resins

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

525293, 526312, 528 75, 528 84, 528 85, 528904, C08L 7514, C08G 1869

Patent

active

055895433

ABSTRACT:
A hydrophobic polyurethane elastomer composition is disclosed containing a linear soft segment without pendant chain branched groups, wherein said polyurethane elastomer has a glass transition temperature (Tg) of less than -70.degree. C. and a moisture uptake of less than 1.0 wt. % after 24 hours of immersion in water at 70.degree. C., and wherein said polyurethane elastomer comprises at least one repeat unit containing said linear soft segment, which soft segment comprises a moiety derived from a polyol of the structure:

REFERENCES:
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patent: 3427366 (1969-02-01), Verdol et al.
patent: 3758426 (1973-09-01), Boivin et al.
patent: 3897386 (1975-07-01), Sanda, Jr.
patent: 4020125 (1977-04-01), Suzuki et al.
patent: 5266145 (1993-11-01), Duck et al.
patent: 5272204 (1993-12-01), Akimoto et al.

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