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1. 发明公开

EP2529373A1 HIGH SPEED DVDS 审中-公开
标题翻译：高速DVD
公开(公告)号：EP2529373A1
公开(公告)日：2012-12-05
申请号：EP11703843.0
申请日：2011-01-26
申请人： Bayer MaterialScience AG
发明人： BRUDER, Friedrich-Karl , HAESE, Wilfried , OSER, Rafael , FISCHER, Wolfgang , LUDEWIG, Michael , WONG, Raymond , ZHANG, Ice
IPC分类号： G11B7/246
CPC分类号： G11B7/2533 , G11B7/24047 , G11B7/246 , G11B7/253 , Y10T428/21
摘要： This invention relates to DVDs made from polycarbonate and a special UV curable bonder material consisting of A) an urethane acrylate oligomer as binder, which is the reaction product of i) one or more polyisocyanates and ii) one or more hydroxyfunctional lactone ester (meth)acrylates having a number average molecular weight of from 200 g/mol to 2000 g/mol and having the formula: CH2═C(R1)—C(O)—O—R2—[O—C(O)—R3]n—OH wherein, n is an integer from 1 to 5, R1 is hydrogen or methyl, R2 represents an alkylene group or substituted alkylene group having from 2 to 10 carbon atoms and R3 represents a straight or branched chain alkylene group of from 3 to 8 carbon atoms, and which may be substituted with one or more alkyl groups having from 1 to 12 carbon atoms, B) a reactive thinner, comprising of mono functional acrylates and/or (meth)acrylates C) a photo initiator and D) optional additives which offers improved performance at high data transfer rates.
摘要翻译：本发明涉及由聚碳酸酯制成的DVD和由A）作为粘合剂的氨基甲酸酯丙烯酸酯低聚物组成的特殊UV可固化粘合剂材料，其是i）一种或多种多异氰酸酯和ii）一种或多种羟基官能内酯酯（甲基）数均分子量为200g / mol至2000g / mol且具有下式的丙烯酸酯：CH 2 = C（R 1）-C（O）-O-R 2 - [O-C（O） - R 3] n -OH其中，n是1至5的整数，R 1是氢或甲基，R 2代表亚烷基或具有2至10个碳原子的取代亚烷基，R 3代表直链或支链具有3至8个碳原子且可以被一个或多个具有1至12个碳原子的烷基取代的亚烷基，B）包含单官能丙烯酸酯和/或（甲基）丙烯酸酯的活性稀释剂，C）光引发剂和D）任选的添加剂，其在高数据传输速率下提供改进的性能。

2. 发明公开

EP2382630A1 DISC SHAPED HIGH DENSITY RECORDING MEDIUM 有权
标题翻译：圆盘状高密度记录介质
公开(公告)号：EP2382630A1
公开(公告)日：2011-11-02
申请号：EP09771313.5
申请日：2009-12-12
申请人： Bayer MaterialScience AG
发明人： BRUDER, Friedrich-Karl , HAESE, Wilfried , OSER, Rafael , PROTTE, Rainer , MEYER, Alexander , HILDENBRAND, Karlheinz , WONG, Raymond , ZHANG, Ice
IPC分类号： G11B7/254 , G11B7/253
CPC分类号： G11B7/2545 , G11B7/2534
摘要： This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25°C at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit / groove structure of > 85%.

3. 发明授权

EP2382630B1 DISC SHAPED HIGH DENSITY RECORDING MEDIUM 有权
标题翻译：圆盘状高密度记录介质
公开(公告)号：EP2382630B1
公开(公告)日：2012-11-07
申请号：EP09771313.5
申请日：2009-12-12
申请人： Bayer MaterialScience AG
发明人： BRUDER, Friedrich-Karl , HAESE, Wilfried , OSER, Rafael , PROTTE, Rainer , MEYER, Alexander , HILDENBRAND, Karlheinz , WONG, Raymond , ZHANG, Ice
IPC分类号： G11B7/254 , G11B7/253
CPC分类号： G11B7/2545 , G11B7/2534

4. 发明公开

EP2382629A1 SUBSTRATE MATERIAL FOR HIGH SPEED OPTICAL DISCS 有权
标题翻译：衬底材料高速光板
公开(公告)号：EP2382629A1
公开(公告)日：2011-11-02
申请号：EP09796622.0
申请日：2009-12-12
申请人： Bayer MaterialScience AG
发明人： BRUDER, Friedrich-Karl , HAESE, Wilfried , OSER Rafael , BLASCHKE, Ulrich , WONG, Raymond , ZHANG, Ice , WEHRLE, Jörg , ROPPEL, Michael
IPC分类号： G11B7/253 , C08G64/00 , C08K5/1545
CPC分类号： C08K5/103 , G11B7/2533 , G11B7/2534 , C08L69/00
摘要： This invention relates to the use of polycarbonate for the production of an optical recording medium in which secure high speed operation, a transcriptability of the pit/groove structure of >85% and sufficient disc flatness can be achieved and the polycarbonate is based on bisphenol A and the polycarbonate contains a release agent in an amount less than 2000 ppm.

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