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    • 12. 发明授权
    • Process for producing polycarbonate resin
    • 生产聚碳酸酯树脂的方法
    • US06252036B1
    • 2001-06-26
    • US09402835
    • 1999-10-13
    • Kazuki HatonoHiroaki KanekoToru SawakiKatsushi Sasaki
    • Kazuki HatonoHiroaki KanekoToru SawakiKatsushi Sasaki
    • C08G6378
    • C08G64/14C08G64/307
    • The purpose of this invention is to produce a stabilized terminal-blocked polycarbonate resin with a limited number of the terminal hydroxy groups having excellent thermal stability, color stability and hydrolysis resistance by an industrially advantageous method using a terminal blocking agent. In the production of a polycarbonate by the melt-polycondensation of an aromatic dihydroxy compound with an aromatic carbonic acid diester in the presence of a polycondensation catalyst, a terminal blocking agent expressed by the following formula (1) [in the formula, R1 is chlorine atom, methoxycarbonyl group or ethoxycarbonyl group; R2 is an alkyl group having a carbon number of 1 to 30, an alkoxy group having a carbon number of 1 to 30, an aryl group having a carbon number of 6 to 30 or an aryloxy group having a carbon number of 6-30] is added after the melt-polycondensation to the system in an amount of 0.3 to 4 mol-equivalent based on the hydroxy terminal group amount of the polycarbonate at 200 to 350° C. under a pressure of 1,013 hPa (760 mmHg) or below for 0.1 second or longer and, thereafter, a stabilizer is added and kneaded into the system at 200 to 350° C. under a pressure of 1.333×105 hPa (105 mmHg) or below for 0.1 second or longer.
    • 本发明的目的是通过使用端基封端剂的工业上有利的方法制备具有有限数目的末端羟基的稳定的封端聚碳酸酯树脂,其具有优异的热稳定性,颜色稳定性和耐水解性。 在通过芳族二羟基化合物与芳香族碳酸二酯在缩聚催化剂存在下的熔融缩聚反应制造聚碳酸酯时,由下式(1)表示的封端剂[式中,R1为氯原子 原子,甲氧基羰基或乙氧基羰基; R 2为碳数为1〜30的烷基,碳数为1〜30的烷氧基,碳数为6〜30的芳基或碳原子数为6〜30的芳氧基] 在对于体系进行熔融缩聚之后,相对于聚碳酸酯的羟基端基量为200〜350℃,在1013hPa(760mmHg)以下的压力下,以0.3〜4mol当量的量进行熔融缩聚, 0.1秒以上,然后在1.333×105hPa(105mmHg)以下0.1秒以上的压力下,在200〜350℃下加入稳定剂并捏合到体系中。
    • 13. 发明授权
    • Polycarbonate resin composition optical recording medium, and substrate therefor
    • 聚碳酸酯树脂组合物光记录介质及其基材
    • US06407199B1
    • 2002-06-18
    • US09744559
    • 2001-01-26
    • Masumi HirataToru SawakiWataru FunakoshiKatsushi SasakiJyuhou Matsuo
    • Masumi HirataToru SawakiWataru FunakoshiKatsushi SasakiJyuhou Matsuo
    • C08G6400
    • C08L69/00C08K5/0008C08K5/06C08K5/101C08K5/103C08K5/13C08K5/156C08K5/1565C08K5/17C08K5/42C08K5/50C08K5/526C08K5/53G11B7/2534C08L2666/16
    • A polycarbonate resin composition which is excellent in thermal stability such as color retention at the time of melt molding, for example, the prevention of yellowing, and moldability such as releasability and transferability and therefore particularly suitable for the production of precision optical moldings such as optical disk substrates and lenses. The polycarbonate resin composition comprises (A) an aromatic polycarbonate, and (B) a cyclic carbonate compound, a monoester compound of a divalent aliphatic alcohol having 3 to 14 carbon.atoms and an aliphatic monocarboxylic acid having 12 to 24 carbon atoms, or an ether compound obtained by converting at least one hydroxyl group of a polyvalent aliphatic alcohol having 3 to 14 carbon atoms into an aliphatic oxy group having 1 to 18 carbon atoms, or (C) a partial ester compound of an aliphatic alcohol having a valence of 2 to 6 and 2 to 14 carbon atoms and an aliphatic monocarboxylic acid having 12 to 24 carbon atoms, a cyclic phenol compound or a compound selected from hydrochloric acid, phosphoric acid, phosphorous acid, boric acid, and amine salts and ammonium salts thereof.
    • 熔融成型时的热稳定性优异的聚碳酸酯树脂组合物,例如防止黄变,以及脱模性和转印性等成型性,因此特别适用于制造精密光学模制品如光学 磁盘基板和透镜。 聚碳酸酯树脂组合物包含(A)芳族聚碳酸酯和(B)环状碳酸酯化合物,具有3〜14个碳原子的二价脂肪族醇的单酯化合物和碳原子数12〜24的脂肪族一元羧酸,或 通过将具有3〜14个碳原子的多元脂肪醇的至少一个羟基转化为碳原子数1〜18的脂肪族氧基而得到的醚化合物,或(C)2价的脂肪族醇的偏酯化合物 碳原子数为6〜2〜14的脂肪族单羧酸,环状酚化合物或选自盐酸,磷酸,亚磷酸,硼酸及其胺盐及铵盐的化合物。
    • 15. 发明申请
    • Process and composition for the production of carbon fiber and mats
    • 用于生产碳纤维和垫子的工艺和组成
    • US20060012061A1
    • 2006-01-19
    • US10529758
    • 2003-09-25
    • Masumi HirataHiroshi SakuraiToru SawakiTetsuo BanSatoru OhmoriShunichi MatsumuraHideaki Nitta
    • Masumi HirataHiroshi SakuraiToru SawakiTetsuo BanSatoru OhmoriShunichi MatsumuraHideaki Nitta
    • D01C5/00D01D5/08D01D5/10C08F8/30
    • D01F9/14
    • A process for manufacturing a carbon fiber having a fiber diameter of 0.001 to 5 μm and a narrow fiber size distribution, and a resin composition suitable for the manufacture of a carbon fiber. A resin composition comprising 100 parts by weight of a thermoplastic resin, 1 to 150 parts by weight of a carbon precursor organic compound (A) and 0.001 to 40 parts by weight of acopolymer of polymer segments (e1) and (e2) which satisfy a specific range of surface tension for the thermoplastic resin and a specific range of surface tension for the carbon precursor organic compound (A) at the same time. A process for manufacturing a carbon fiber, comprising the steps of producing a molded article of a precursor fiber (B) by treating the resin composition, subjecting the carbon precursor organic compound (A) contained in the precursor fiber (B) to a stabilization treatment so as to produce a stabilized precursor fiber (C), removing the thermoplastic resin contained in the stabilized precursor fiber (C), and carbonizing or graphitizing a fibrous carbon precursor (D) obtained by removing the thermoplastic resin.
    • 一种纤维直径为0.001〜5μm,纤维尺寸分布窄的碳纤维的制造方法以及适于制造碳纤维的树脂组合物。 一种树脂组合物,其包含100重量份的热塑性树脂,1至150重量份的碳前体有机化合物(A)和0.001至40重量份的聚合物链段(e1)和(e2)的共聚物,其满足 热塑性树脂的表面张力的特定范围和碳前体有机化合物(A)的同时具有特定的表面张力范围。 一种制造碳纤维的方法,包括以下步骤:通过处理树脂组合物,将前体纤维(B)中所含的碳前体有机化合物(A)进行稳定化处理,制备前体纤维(B)的模制品 以制备稳定的前体纤维(C),除去稳定化的前体纤维(C)中所含的热塑性树脂,并且通过除去热塑性树脂而获得的纤维状碳前体(D)碳化或石墨化。