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1. 发明授权

US5371236A Non-crystalline ether-imide type high purity bismaleimide composition and process for producing the same 失效
标题翻译：非结晶醚酰亚胺型高纯度双马来酰亚胺组合物及其制备方法
公开(公告)号：US5371236A
公开(公告)日：1994-12-06
申请号：US77763
申请日：1993-06-18
申请人： Kaoru Kanayama , Tadao Takeyama , Takeshi Nakato , Yoshinobu Ohnuma , Hiromi Chiba
发明人： Kaoru Kanayama , Tadao Takeyama , Takeshi Nakato , Yoshinobu Ohnuma , Hiromi Chiba
IPC分类号： C07D207/44 , C07D207/452 , C07D403/10
CPC分类号： C07D207/452
摘要： A non-crystalline ether-imide type high purity bismaleimide composition represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each represent a hydrogen atom, a halogen atom, or an alkyl group having from 1 to 4 carbon atoms; R.sup.5 represents a hydrogen atom or a methyl group; and R.sup.6 represents a hydrogen atom, a methyl group or a phenyl group. The non-crystalline bismaleimide (I) has a purity of 95 wt % or higher, a melting point of not higher than 130.degree. C., and exhibits excellent solubility in a solvent. It is prepared by a process comprising uniformly melting a crystalline bismaleimide (I) followed by rapid cooling to solidify or a process comprising subjecting a maleamic acid, which is obtained by addition reaction between a corresponding aromatic ether diamine and maleic anhydride in an aromatic hydrocarbon/aprotic polar solvent mixed solvent, to dehydrating cyclization in the presence of an acid catalyst while azeotropically removing by-produced water with the aromatic hydrocarbon solvent, removing the remaining aromatic hydrocarbon solvent by distillation, withdrawing the produced maleimide in a molten state, and rapidly cooling to solidify.
摘要翻译：由式（I）表示的非结晶醚 - 酰亚胺型高纯度双马来酰亚胺组合物：表示氢原子，卤素原子或具有1至4个碳原子的烷基; R5表示氢原子或甲基; R6表示氢原子，甲基或苯基。非晶双马来酰亚胺（I）的纯度为95重量％以上，熔点为130℃以下，在溶剂中的溶解性优异。其通过包括均匀熔融结晶双马来酰亚胺（I），然后快速冷却固化的方法制备，或包括使通过相应的芳族醚二胺和马来酸酐之间的加成反应获得的马来酰胺酸在芳族烃/ 非质子极性溶剂混合溶剂，在酸催化剂的存在下进行脱水环化，同时用芳族烃溶剂共沸除去副产物的水，通过蒸馏除去剩余的芳烃溶剂，将所生产的马来酰亚胺在熔融状态下取出，并快速冷却凝固

2. 发明授权

US4734477A Method for cast molding plastic substrate 失效
标题翻译：铸造塑料基材的方法
公开(公告)号：US4734477A
公开(公告)日：1988-03-29
申请号：US886167
申请日：1986-07-16
申请人： Takao Inoue , Tadashi Sakairi , Mitsutoshi Aritomi , Tadao Takeyama , Takahiro Matsuo
发明人： Takao Inoue , Tadashi Sakairi , Mitsutoshi Aritomi , Tadao Takeyama , Takahiro Matsuo
IPC分类号： B29C35/02 , B29C35/08 , B29C39/00 , C08F18/00
CPC分类号： B29C35/0222 , B29C39/006 , B29C35/02 , B29C35/08 , B29K2033/04
摘要： A method for producing a plastic substrate having Tg of 110.degree. C. or more is disclosed, which comprises radical polymerizing a polyfunctional (meth)acrylate compound in a mold by a cast molding method, removing the resulting substrate from the mold when the glass transition temperature of the substrate reaches 10.degree. to 100.degree. C., and then post-curing the substrate. The method of the present invention can provide high quality plastic substrates with high productivity.
摘要翻译：公开了一种Tg为110℃以上的塑料基板的制造方法，该方法包括通过流延成型法在模具中自由基聚合多官能（甲基）丙烯酸酯化合物，当玻璃化转变基板的温度达到10〜100℃，然后对基材进行后固化。本发明的方法可以以高生产率提供高质量的塑料基材。

3. 发明授权

US4923942A Optical disc and method of manufacturing the same 失效
标题翻译：光盘及其制造方法
公开(公告)号：US4923942A
公开(公告)日：1990-05-08
申请号：US251999
申请日：1988-09-30
申请人： Tadao Takeyama , Mitsutoshi Aritomi
发明人： Tadao Takeyama , Mitsutoshi Aritomi
IPC分类号： C08F220/20 , C08F20/10 , C08F220/10 , C08F220/18 , C08F220/30 , G02B1/04
CPC分类号： C08F220/30
摘要： An optical resin consisting essentially of a radical polymerization polymer of an ethylenically unsaturated monomer, characterized in that at least a major part of the ethlenically unsaturated monomer is an ester of 1 mole of tricyclo[5,2,1,0.sup.2,6 ]decanedimethanol with 2 moles of a mixture of acrylic acid and metharcylic acid. Because the resin is a polymer obtained from the restricted monomer as specified above, the resin possesses high thermal resistance and high heat stability as well as low hygroscopic property. Dimethanol compounds from higher Diels-Alder adducts of cyclopentadine are also used in place of the tricyclo [5,2,1,0.sup.2,6 ]decanedimthanol which is a Diels-Alder adduct of two moles of cyclopentadiene.
摘要翻译：一种基本上由烯属不饱和单体的自由基聚合聚合物组成的光学树脂，其特征在于至少大部分的所述不饱和单体是1摩尔三环[5,2,1,02,6]癸烷二甲醇与 2摩尔丙烯酸和甲基马来酸的混合物。由于树脂是由上述受限单体获得的聚合物，所以树脂具有高耐热性和高热稳定性以及低吸湿性。也可以使用来自较高级Diels-Alder加合物的二甲醇化合物代替三环[5,2,1,02,6]癸二醇，其是两摩尔环戊二烯的Diels-Alder加合物。

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