High impact poly (urethane urea) polysulfides
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United States of America Patent
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Issued Date -
Dec 22, 2005
app pub date -
May 31, 2005
filing date -
Nov 16, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm.sup.3, when at least partially cured.
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