Polyurethane diacrylate compositions useful in forming canulae

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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521905, 525454, 525455, 528 75, 528904, 424 52, 424 53, 424 62, 424 63, C08F 830, C08L 7500

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active

044395833

ABSTRACT:
Canulae formed of or having a coating of polyurethane diacrylate compositions obtained by reacting a diacrylate in the presence of from about 65 to about 95 weight percent of a hydrophilic polyurethane resin. The compositions will form a hydrogel upon immersion in water and are permeable to gases, ions and other low molecular weight species. The hydrophilic polyurethane diacrylate compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory.

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