Softening non-swelling polyurethane

Details Softening non-swelling polyurethane Softening non-swelling polyurethane

1992-10-26

1993-11-30

Welsh, Maurice J.

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

Synthetic resins

From silicon reactant having at least one...

528 67, 528 76, 528 78, C08G 1838

Patent

active

052666697

ABSTRACT:
A non-yellowing, elastomeric polyurethane is made from a non-aromatic diisocyanate, a diol chain extender, a polyglycol and an aminodiol chain extender. The polyurethane is stable to sterilizing radiation, is made without any processing aids or toxic catalysts, and softens without swelling up to 95% when contacted with an aqueous liquid.

REFERENCES:
patent: 4822827 (1989-04-01), Bonk et al.

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