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    • 3. 发明授权
    • Polyester resin and process for its production
    • 聚酯树脂及其生产工艺
    • US06667383B2
    • 2003-12-23
    • US10263716
    • 2002-10-04
    • Yoshihiro FujimoriMasahiro NukuiYutaka YatsugiKenichi Matsui
    • Yoshihiro FujimoriMasahiro NukuiYutaka YatsugiKenichi Matsui
    • C08G6378
    • C08G63/85C08G63/183C08G63/82C08G63/826C08G63/83C08G63/87
    • A polyester resin is prepared by polycondensing a dicarboxylic acid component containing terephthalic acid or its ester-forming derivative as the main component, and a diol component containing ethylene glycol as the main component in the presence of (1) a compound of at least one member selected from the group consisting of titanium group elements in Group 4A of the Periodic Table, via an esterification reaction or an ester exchange reaction, wherein the content of copolymerized components other than the terephthalic acid component and the ethylene glycol component, is not more than 4 mole % based on the total dicarboxylic acid component, and in a molded product with a thickness of 3.5 mm injection-molded at 280° C., the difference between the absorbance at a wavelength of 395 nm and the absorbance at a wavelength of 800 nm is at least 0.08, and the difference between the absorbance at a wavelength of 500 nm and the absorbance at a wavelength of 800 nm is at most 0.05.
    • 在(1)至少一种成分的化合物的存在下,将含有对苯二甲酸或其成酯衍生物的二羧酸成分作为主要成分,以乙二醇为主要成分的二醇成分进行缩聚, 通过酯化反应或酯交换反应选自周期表4A族中的钛族元素,其中除对苯二甲酸成分和乙二醇成分以外的共聚成分的含量为4以下 摩尔%,在280℃注射成型的厚度为3.5mm的成型品中,波长395nm处的吸光度与波长800nm处的吸光度之差 至少为0.08,波长500nm处的吸光度与波长800nm处的吸光度之差为0.05以下。
    • 5. 发明申请
    • Polyester resin and process for its production
    • US20060084782A1
    • 2006-04-20
    • US11294368
    • 2005-12-06
    • Yoshihiro FujimoriMasahiro NukuiYutaka YatsugiKenichi Matsui
    • Yoshihiro FujimoriMasahiro NukuiYutaka YatsugiKenichi Matsui
    • C08G63/02
    • C08G63/85C08G63/183C08G63/82C08G63/826C08G63/83C08G63/87
    • A polyester resin, whereby a molded product excellent in a gas barrier property and also excellent in an ultraviolet shielding property, a color tone, etc., and which is particularly suitable for molding a bottle for e.g. a beverage required to have an aroma retention property, and further, a polyester resin, whereby the acetaldehyde content as a molded product is reduced to eliminate an influence over the taste, aroma, etc. of the content, and a process for its production, wherein the polycondensability is improved, are to be presented. A polyester resin produced by polycondensing a dicarboxylic acid component containing terephthalic acid or its ester-forming derivative as the main component, and a diol component containing ethylene glycol as the main component in the presence of (1) a compound of at least one member selected from the group consisting of titanium group elements in Group 4A of the periodic table, via an esterification reaction or an ester exchange reaction, characterized in that the content of copolymerized components other than the terephthalic acid component and the ethylene glycol component, is not more than 4 mol % based on the total dicarboxylic acid component, and in a molded product with a thickness of 3.5 mm injection-molded at 280° C., the difference between the absorbance at a wavelength of 395 nm and the absorbance at a wavelength of 800 nm is at least 0.08, and the difference between the absorbance at a wavelength of 500 nm and the absorbance at a wavelength of 800 nm is at most 0.05; and a process for producing a polyester resin, which comprises polycondensing a dicarboxylic acid component containing terephthalic acid or its ester-forming derivative as the main component, and a diol component containing ethylene glycol as the main component in the presence of (1) a compound of at least one member selected from the group consisting of titanium group elements in Group 4A of the periodic table, (2) a compound of at least one element selected from the group consisting of metal elements of Group Ia of the periodic table, elements of Group IIa of the periodic table, manganese, iron and cobalt, and (3) a phosphorus compound, via an esterification reaction or an ester exchange reaction, characterized in that the amounts of the respective compounds (1), (2) and (3) are such amounts that their contents will be from 0.02 to 0.2 mol as the total amount (T) of atoms of the compound (1), from 0.04 to: 0.6 mol as the total amount (M) of atoms of the compound (2) and from 0.02 to 0.4 mol as the total amount (P) of atoms of the compound (3), per 1 ton of the polyester resin.
    • 10. 发明授权
    • Process for the preparation of aromatic polycarbonate resins
    • 芳香族聚碳酸酯树脂的制备方法
    • US5519106A
    • 1996-05-21
    • US373034
    • 1995-01-17
    • Masahiro NukuiTakao TayamaTakeshi KashiwagiMasatoshi KimuraHidekazu Shoji
    • Masahiro NukuiTakao TayamaTakeshi KashiwagiMasatoshi KimuraHidekazu Shoji
    • C08G64/30C08G64/00
    • C08G64/307
    • A process for preparing an aromatic polycarbonate resin from an aromatic dihydroxy compound and a carbonate diester by transesterification in the presence of a transesterification catalyst comprising; reacting a purified carbonate diester with an aromatic dihydroxy compound in the presence of a transesterification catalyst to form a polycarbonate prepolymer; said carbonate diester containing benzophenone and benzoate ester derivatives having a molecular weight of less than 1,000, each in an amount of 100 ppm or less, said polycarbonate prepolymer having a viscosity average molecular weight of 5,000 to 20,000 at a temperature of 140.degree. to 280.degree. C., the reaction pressure being from 0.1 Torr to normal pressure; polymerizing said prepolymer at a temperature of 240.degree. to 350.degree. C. in a lateral, bi-axial, self-cleaning reactor to obtain an aromatic polycarbonate resin having a viscosity average molecular weight of 15,000 to 60,000. The aromatic polycarbonate is colorless and transparent and is suitable for extrusion molding.
    • 一种由酯交换催化剂存在下通过酯交换反应由芳族二羟基化合物和碳酸二酯制备芳族聚碳酸酯树脂的方法,包括: 在酯交换催化剂存在下使纯化的碳酸二酯与芳族二羟基化合物反应以形成聚碳酸酯预聚物; 所述含有分子量小于1,000的二苯甲酮和苯甲酸酯衍生物的碳酸酯二酯各自为100ppm以下,所述聚碳酸酯预聚物在140〜280℃的温度下的粘均分子量为5000〜20,000。 C.反应压力为0.1乇至常压; 在侧向双轴自清洁反应器中在240℃至350℃的温度下聚合所述预聚物,得到粘均分子量为15,000至60,000的芳族聚碳酸酯树脂。 芳香族聚碳酸酯是无色透明的,适用于挤出成型。