发明名称 |
KERBSCHLAGZÄHE POLYHARNSTOFFURETHAN-POLYSULFIDE |
摘要 |
The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane when at least partially cured can have a refractive index of at least 1.57, an Abbe number of at least 35 and a density of less than 1.3 grams/cm3. Further, the sulfur-containing polyureaurethane can be prepared by reacting a polyureaurethane prepolymer comprising a polycyanate and at least one hydrogen-containing material, at least one episulfide-containing material; and an amine-containing curing agent. |
申请公布号 |
AT393789(T) |
申请公布日期 |
2008.05.15 |
申请号 |
AT20020791240T |
申请日期 |
2002.11.14 |
申请人 |
PPG INDUSTRIES OHIO, INC. |
发明人 |
GRAHAM, MARVIN;OKOROAFOR, MICHAEL;SMITH, ROBERT A.;BOJKOVA, NINA;VIDHU, NAGPAL J. |
分类号 |
C08G18/10;C08G18/00;C08G18/38;G02B1/04 |
主分类号 |
C08G18/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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