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1. 发明授权

US5047188A Process for preparation of modified methacrylic resin molding material 失效
标题翻译：改性甲基丙烯酸树脂成型材料的制备方法
公开(公告)号：US5047188A
公开(公告)日：1991-09-10
申请号：US369017
申请日：1989-06-21
申请人： Kazuya Okada , Masahiro Taniguchi , Yasunori Shimomura , Hidemi Tanaka , Tsutomu Matsui
发明人： Kazuya Okada , Masahiro Taniguchi , Yasunori Shimomura , Hidemi Tanaka , Tsutomu Matsui
IPC分类号： B29C47/10 , B29C47/76 , C08F6/06 , C08F6/10 , C08F20/00 , C08F20/12 , C08J3/00 , C08L33/04 , C08L101/00
CPC分类号： C08J3/005 , B29C47/76 , C08F6/10 , B29C47/0009 , B29C47/1063 , B29K2105/0005
摘要： Disclosed is a process for the preparation of a modified methacrylic resin molding material, wherein a volatile component is removed from a methacrylic polymer composition containing a volatile component including an unreacted monomer, a solvent or a by-product, and a modifying polymer is added to the methacrylic polymer composition to prepare a modified molding material. The removal of a volatile component from the methacrylic polymer composition and the addition and kneading of a modifying polymer into this polymer composition can be performed at a high efficiency by a process wherein a volatile component-removing extruder comprising a plurality of vent zones and a modifying polymer supply mechanism arranged upstream of the final vent zone but preferably downstream of the adjacent vent zone is used, the modifying polymer is fed from the modifying polymer supply mechanism and incorporated into the methacrylic polymer composition continuously flowing in the volatile component-removing extruder, and the volatile component is removed from the obtained mixture in the final vent zone and the mixture is then extruded.

2. 发明授权

US4558098A Methacrylic resin composition 失效
标题翻译：甲基丙烯酸树脂组合物
公开(公告)号：US4558098A
公开(公告)日：1985-12-10
申请号：US563021
申请日：1983-12-19
申请人： Kazumasa Kamata , Yoshio Nakai , Yasunori Shimomura
发明人： Kazumasa Kamata , Yoshio Nakai , Yasunori Shimomura
IPC分类号： C08L33/12 , C08L35/06 , C08L25/14
CPC分类号： C08L33/12 , C08L35/06
摘要： There is provided a heat-resistant methacrylic resin composition, which comprises 1 to 99% by weight of a copolymer [I] obtained by copolymerizing methyl methacrylate, an aromatic vinyl compound and maleic anhydride and 99 to 1% by weight of a copolymer [II] obtained by copolymerizing 80 to 100% by weight of methyl methacrylate and 0 to 20% by weight of other copolymerizable ethylenic monomer.The resin composition according to the present invention is excellent in characteristics such as optical characteristics, mechanical properties, weathering resistance and molding processability as well as in productivity.
摘要翻译：提供了一种耐热甲基丙烯酸树脂组合物，其包含1至99重量％的通过共聚甲基丙烯酸甲酯，芳族乙烯基化合物和马来酸酐得到的共聚物[I]和99至1重量％的共聚物[II ]，通过使80〜100重量％的甲基丙烯酸甲酯和0〜20重量％的其它可共聚的乙烯类单体共聚得到。本发明的树脂组合物的光学特性，机械性能，耐候性和成型加工性以及生产率等特性优异。

3. 发明授权

US4509163A Process for producing a low hygroscopic methacrylic resin and information recording substrates made therefrom 失效
标题翻译：用于生产低吸湿性甲基丙烯酸树脂的方法和由其制备的信息记录基材
公开(公告)号：US4509163A
公开(公告)日：1985-04-02
申请号：US506616
申请日：1983-06-22
申请人： Kazumasa Kamada , Katsumi Tamai , Yasunori Shimomura , Kazunori Abe
发明人： Kazumasa Kamada , Katsumi Tamai , Yasunori Shimomura , Kazunori Abe
IPC分类号： C08F2/00 , C08F2/02 , C08F20/00 , C08F20/10 , C08F220/00 , C08F220/10 , C08F220/14 , C08F220/18 , G02B1/04 , G11B23/00
CPC分类号： G11B23/0092 , C08F220/14 , G02B1/04 , G02B1/041
摘要： A methacrylic resin having reduced water absorption properties, useful in optical instruments and as information recording substrates, is produced by polymerizing a mixture consisting of (A) 50 to 85% by weight of a methyl methacrylate, (B) 15 to 50 by weight of a cyclohexyl methacrylate and (C) 0 to 30% by weight of the other copolymerizable with said monomer (A) and (B), or partially polymerized product thereof.
摘要翻译：通过将由（A）50-85重量％的甲基丙烯酸甲酯，（B）15至50重量份的（A）的甲基丙烯酸甲酯组成的混合物聚合成具有降低的吸水性的甲基丙烯酸树脂，其可用于光学仪器和信息记录基材，甲基丙烯酸环己酯和（C）0〜30重量％的可与所述单体（A）和（B）共聚的其它物质，或其部分聚合产物。

4. 发明授权

US5252440A Methacrylic resin composition for optical discs 失效
标题翻译：用于光盘的甲基丙烯酸树脂组合物
公开(公告)号：US5252440A
公开(公告)日：1993-10-12
申请号：US866303
申请日：1992-04-13
申请人： Fumio Sato , Yasunori Shimomura , Masaaki Kishimura
发明人： Fumio Sato , Yasunori Shimomura , Masaaki Kishimura
IPC分类号： C08K5/101 , G03C1/00
CPC分类号： C08K5/101 , Y10S430/146
摘要： A methacrylic resin composition for optical discs comprising 100 parts by weight of a copolymer composed of from 95 to 99.7% by weight of methyl methacrylate (A) and from 0.3 to 5% by weight of at least one monomer (B) selected from the group consisting of methyl acrylate, ethyl acrylate and butyl acrylate, and having a heat distortion temperature of at least 95.degree. C., a melt flow rate of from 1.0 to 10.0 g/10 min and a tensile strength of at least 660 kg/cm.sup.2, and from 0.05 to 2.0 parts by weight of at least one releasing agent (C) selected from the group consisting of a fatty acid alkyl ester of the formula R.sub.1 COOR.sub.2 wherein each of R.sub.1 and R.sub.2 is an alkyl group having from 5 to 20 carbon atoms, cetanol and a stearic acid glycerol ester.
摘要翻译：一种用于光盘的甲基丙烯酸树脂组合物，包括100重量份由95至99.7重量％的甲基丙烯酸甲酯（A）和0.3至5重量％的至少一种选自以下的单体（B）的共聚物由丙烯酸甲酯，丙烯酸乙酯和丙烯酸丁酯组成，热变形温度为95℃以上，熔体流动速率为1.0〜10.0g / 10min，拉伸强度为660kg / cm 2以上，和0.05〜2.0重量份的选自由式R 1 COOR 2的脂肪酸烷基酯组成的组中的至少一种脱模剂（C），其中R1和R2各自为具有5至20个碳原子的烷基，鲸蜡醇和硬脂酸甘油酯。

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