Silicone polyurethane copolymers containing oxygen sensitive phosphorescent dye compounds
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United States of America Patent
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Oct 13, 1992
Grant Date -
N/A
app pub date -
Oct 10, 1991
filing date -
Oct 10, 1991
priority date (Note) -
Expired
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Abstract
The present invention is directed to silicone polyurethane copolymers containing phosphorescent dye compounds wherein the copolymers are represented by the formula: ##STR1## wherein n is an integer ranging from 1 to about 30, and y, z, and w are integers ranging from 0 to about 40, wherein one of y, z, and w is at least one; and A is a diamide, B is a silicone block copolymer, D is a chain extender, and E is a phosphorescent porphyrin-type compound.
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