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公开(公告)号：US06528617B1
公开(公告)日：2003-03-04
申请号：US09869154
申请日：2001-06-25
申请人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Ryo Shinagawa , Shinji Ogawa , Yasushi Kotaki
发明人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Ryo Shinagawa , Shinji Ogawa , Yasushi Kotaki
IPC分类号： C08F600
摘要： The invention relates to a process for producing an aliphatic polyester excellent in stability which includes subjecting an aliphatic polyester containing at least 50% of an aliphatic hydroxycarboxylic acid unit, obtainable by solid-phase polymerization under a flowing gas in the presence of a volatile catalyst so as to have a desired weight average molecular weight within the range of 50,000 to 1,000,000, to a heat treatment at a temperature equal to or higher than the reaction temperature of the solid-phase polymerization under a flowing gas with maintaining the aliphatic polyester in a solid state. According to the process of the invention, an aliphatic polyester excellent in stability at molding and storage stability is obtained.
摘要翻译： 本发明涉及稳定性优异的脂肪族聚酯的制造方法，其特征在于，在挥发性催化剂的存在下，使含有至少50％脂肪族羟基羧酸单元的脂肪族聚酯，在流动气体下通过固相聚合得到， 为了使所需的重均分子量在50,000〜1,000,000范围内，在等于或高于流动气体下的固相聚合反应温度的温度下进行热处理，同时保持脂族聚酯为固体 州。 根据本发明的方法，获得了在成型时的稳定性优异且储存稳定性优异的脂肪族聚酯。
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公开(公告)号：US6140458A
公开(公告)日：2000-10-31
申请号：US300292
申请日：1999-04-27
申请人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Ryo Shinagawa , Shinji Ogawa , Yasushi Kotaki
发明人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Ryo Shinagawa , Shinji Ogawa , Yasushi Kotaki
摘要： The invention provides a process for producing high-molecular aliphatic polyesters capable of being substitutes for general-purpose resins that are required to have high toughness, in a simplified manner and at a high volume efficiency. Specifically, in the process, used as the starting material is an easily-available, low-molecular aliphatic polyester prepolymer to be prepared through polycondensation of inexpensive materials of an aliphatic hydroxycarboxylic acid such as lactic acid, glycolic acid or the like, an aliphatic polyalcohol such as butanediol or the like, and an aliphatic polycarboxylic acid such as succinic acid or the like, and the starting prepolymer is crystallized and thereafter polycondensed in a solid phase in the presence of a catalyst to give the intended, tough and high-molecular aliphatic polyester.
摘要翻译： 本发明提供了一种制备高分子量脂肪族聚酯的方法，其能够以简单的方式和高体积效率代替要求具有高韧性的通用树脂。 具体地说，在作为起始原料的方法中，作为通过脂肪族羟基羧酸如乳酸，乙醇酸等的廉价材料的缩聚制备的容易获得的低分子量脂肪族聚酯预聚物，脂肪族多元醇 例如丁二醇等，和脂肪族多元羧酸如琥珀酸等，并将起始预聚物结晶化，然后在催化剂存在下在固相中缩聚，得到所需的韧性和高分子量脂族 聚酯。
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公开(公告)号：US06417266B1
公开(公告)日：2002-07-09
申请号：US09786763
申请日：2001-03-09
申请人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Hiroshi Kimura , Shinji Ogawa , Yasushi Kotaki
发明人： Yuji Terado , Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Shoji Hiraoka , Masayuki Sakai , Hiroyuki Suzuki , Hiroshi Kimura , Shinji Ogawa , Yasushi Kotaki
IPC分类号： C08K541
摘要： A process for producing aliphatic polyester wherein a crystallized aliphatic polyester prepolymer formed from an aliphatic dihydric alcohol and an aliphatic dicarboxylic acid and having a weight-average molecular weight of 2,000 to 100,000 is caused to undergo solid-phase polymerization in the presence of a volatile catalyst to make an aliphatic polyester having a weight-average molecular weight of 50,000 to 1,000,000. This process is more efficient than any prior process calling for a complicated step for catalyst removal, since it enables the removal of the catalyst from the reaction system during and/or after solid-phase polymerization. The polyester is comparable in stability to any aliphatic polyester having any catalyst removed therefrom.
摘要翻译： 一种脂肪族聚酯的制造方法，其特征在于，在挥发性催化剂的存在下，使由脂肪族二元醇和脂肪族二羧酸形成的重均分子量为2,000〜100,000的结晶脂肪族聚酯预聚物进行固相聚合 得到重均分子量为50,000〜1,000,000的脂肪族聚酯。 该方法比任何先前的方法要求复杂的催化剂去除步骤更有效，因为其能够在固相聚合期间和/或之后从反应体系中除去催化剂。 聚酯与其中除去任何催化剂的任何脂族聚酯的稳定性相当。
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公开(公告)号：US5817728A
公开(公告)日：1998-10-06
申请号：US610240
申请日：1996-03-04
申请人： Chojiro Higuchi , Hiroshi Suizu , Masatoshi Takagi , Takeshi Kashima , Yuji Terado , Ikumi Kitada , Masanobu Ajioka , Akihiro Yamaguchi , Taiji Kameoka
发明人： Chojiro Higuchi , Hiroshi Suizu , Masatoshi Takagi , Takeshi Kashima , Yuji Terado , Ikumi Kitada , Masanobu Ajioka , Akihiro Yamaguchi , Taiji Kameoka
IPC分类号： C08B3/16 , C08B13/00 , C08B31/02 , C08G63/664 , C08G63/672 , C08G63/81 , C08B3/00
CPC分类号： C08G63/81 , C08B13/00 , C08B3/16 , C08B31/02 , C08G63/664 , C08G63/672
摘要： A preparation process of a degradable copolymer comprising carrying out dehydration polycondensation of polysaccharide (A) with one or more compounds (B) selected from the group consisting of: (b1) hydroxycarboxylic acid, (b2) polyhydroxycarboxylic acid, (b3) aliphatic polyhydric alcohol and aliphatic polybasic acid, and (b4) aliphatic polyester derived from aliphatic polyhydric alcohol and aliphatic polybasic acid. A copolymer having a high molecular weight, excellent toughness, transparency and heat resistance, and additionally having a high melt tension can be obtained with a reaction time less than a half of the conventional process. The copolymer obtained by the invention is a material suited for injection molding, extrusion, calendaring, blow forming, balloon forming, vacuum forming and foaming. Particularly, the copolymer obtained by the invention has a high melt tension and thus the molten copolymer is difficult to sag and flow and can be processed with ease into foams and blow bottles.
摘要翻译： 一种可降解共聚物的制备方法，包括进行多糖（A）与一种或多种选自以下的化合物（B）的脱水缩聚：（b1）羟基羧酸，（b2）聚羟基羧酸，（b3）脂肪族多元醇 和脂族多元酸，和（b4）衍生自脂肪族多元醇和脂肪族多元酸的脂肪族聚酯。 可以获得具有低于常规方法的一半的反应时间的具有高分子量，优异的韧性，透明性和耐热性以及额外具有高熔体张力的共聚物。 通过本发明获得的共聚物是适于注射成型，挤出，压延，吹塑成型，球形成型，真空成型和发泡的材料。 特别地，本发明获得的共聚物具有高熔体张力，因此熔融共聚物难以下垂和流动，并且可以容易地加工成泡沫和吹塑瓶。
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公开(公告)号：US5914381A
公开(公告)日：1999-06-22
申请号：US925133
申请日：1997-09-08
申请人： Yuji Terado , Hiroshi Suizu , Chojiro Higuchi , Masanobu Ajioka
发明人： Yuji Terado , Hiroshi Suizu , Chojiro Higuchi , Masanobu Ajioka
IPC分类号： C08G63/60 , C08G63/08 , C08B3/00 , C08B13/00 , C08G63/664
CPC分类号： C08G63/60
摘要： A degradable polymer and a process for preparing the degradable polymer which has a structure resulting from combination of a star-shaped polymer comprising a polyfunctional base compound of polycarboxylic acid having three or more carboxyl groups and/or anhydride of the same or aliphatic polyhydric alcohol having three or more hydroxyl groups and a unit of aliphatic hydroxycarboxylic acid, with aliphatic polyhydric alcohol having two or more hydroxyl groups or polycarboxylic acid having two or more carboxyl groups or anhydrides of the same. The degradable polymer leads to remarkably low coloration as compared with a polymer comprising polysaccharide as a polyfunctional base compound, has high melt tension as compared to common aliphatic polyester is excellent in processability on various molding methods, foam molding and blow molding in particular, and high transparency.
摘要翻译： 一种可降解聚合物和一种制备可降解聚合物的方法，其具有由包含具有三个或更多个羧基的多元羧酸的多官能基础化合物和/或其相同的酸酐的多官能基础化合物或具有 三个或多个羟基和脂族羟基羧酸单元，与具有两个或多个羟基的脂族多元醇或具有两个或多个羧基的多元羧酸或其酸酐的酸酐。 与包含多糖作为多官能基础化合物的聚合物相比，与普通脂肪族聚酯相比，具有较高的熔融张力，可降解聚合物导致显着低的着色，在各种成型方法，发泡成型和吹塑成型方面具有优异的加工性，特别是高 透明度。
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6.发明授权
公开(公告)号：US6001891A
公开(公告)日：1999-12-14
申请号：US865128
申请日：1997-05-29
CPC分类号： C08G63/81 , C08G63/52 , C08G63/676
摘要： A biodegradable aliphatic polyester elastomer which has rubber-like elasticity, hardness of 80 or less in accordance with ASTM D 676-58T, and elastic modulus from 1.times.10.sup.5 Pa to 1.times.10.sup.8 Pa at 25.degree. C., and decomposes with ease in the natural environment, under composting conditions or under hydrolysis conditions. The biodegradable aliphatic elastomer can be obtained by crosslinking aliphatic polyester containing aliphatic unsaturated polybasic acid as a polymer constituting ingredient and having a weight average molecular weight of 15,000 or more.
摘要翻译： 具有橡胶状弹性，根据ASTM D 676-58T的硬度为80以下的生物降解性脂肪族聚酯弹性体，25℃下的弹性模量为1×10 5 Pa〜1×10 8 Pa，在自然环境中容易分解， 在堆肥条件下或在水解条件下。 可生物降解的脂肪族弹性体可以通过将含有脂肪族不饱和多元酸的脂肪族聚酯作为构成成分的聚合物交联而获得，重均分子量为15000以上。
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公开(公告)号：US5496923A
公开(公告)日：1996-03-05
申请号：US305785
申请日：1994-09-14
CPC分类号： C08G63/90
摘要： A purification process of an aliphatic polyester prepared in the presence of a catalyst from a hydroxycarboxylic acid or a cyclic ester of a hydroxycarboxylic acid, or a combination of an aliphatic polyhydric alcohol with an aliphatic polybasic acid, or a mixture of these compounds, comprising deactivating the catalyst while maintaining the aliphatic polyester in a molten or dissolved state, or insolubilizing and separating the catalyst and successively removing low molecular compounds. The process can provide aliphatic polyester which has a low content of unreacted monomers and low molecular weight compounds and is excellent in heat resistance and weatherability.
摘要翻译： 在催化剂存在下由羟基羧酸或羟基羧酸的环酯或脂族多元醇与脂族多元酸的混合物或这些化合物的混合物制备的脂族聚酯的纯化方法，包括钝化 催化剂，同时保持脂族聚酯处于熔融或溶解状态，或不溶化和分离催化剂并连续除去低分子化合物。 该方法可以提供具有低含量的未反应单体和低分子量化合物的脂族聚酯，并且耐热性和耐候性优异。
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公开(公告)号：US5679767A
公开(公告)日：1997-10-21
申请号：US564736
申请日：1995-11-29
CPC分类号： C08G63/90
摘要： The invention is a purification process of an aliphatic polyester prepared in the presence of a catalyst from a hydroxycarboxylic acid or a cyclic ester of a hydroxycarboxylic acid, or a combination of an aliphatic polyhydric alcohol with an aliphatic polybasic acid, or a mixture of these compounds, comprising deactivating the catalyst while maintaining the aliphatic polyester in a molten or dissolved state, or insolubilizing and separating the catalyst and successively removing low molecular compounds; and can provide aliphatic polyester which has a low content of unreacted monomers and low molecular weight compounds and is excellent in heat resistance and weatherability.
摘要翻译： 本发明是在由羟基羧酸或羟基羧酸的环状酯或脂族多元醇与脂肪族多元酸的组合的催化剂或这些化合物的混合物存在下制备的脂肪族聚酯的纯化方法 包括使所述催化剂失活，同时保持所述脂肪族聚酯处于熔融或溶解状态，或使所述催化剂不溶解和分离并连续除去低分子化合物; 并且可以提供具有低含量的未反应单体和低分子量化合物的脂肪族聚酯，并且耐热性和耐候性优异。
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公开(公告)号：US5847011A
公开(公告)日：1998-12-08
申请号：US759953
申请日：1996-12-03
申请人： Yuji Terado , Chojiro Higuchi , Masanobu Ajioka
发明人： Yuji Terado , Chojiro Higuchi , Masanobu Ajioka
摘要： A degradable copolymer obtained by heat-dehydration reaction of aromatic polycarbonate and aliphatic polyester in the presence of a catalyst, has degradability which cannot be exhibited by common aromatic polycarbonate, transparency equal to polycarbonate, thermal resistance which cannot be exhibited by common aliphatic polyester, melt flowability superior to common aromatic polycarbonate and other excellent characteristics, and thus can be widely used for processed articles which require severe properties.
摘要翻译： 通过芳族聚碳酸酯和脂肪族聚酯在催化剂存在下进行热脱水反应获得的可降解共聚物具有普通芳族聚碳酸酯不能显示的降解性，聚碳酸酯的透明度，常用脂肪族聚酯不能显示的耐热性，熔融 流动性优于普通芳族聚碳酸酯等优异特性，因此可广泛用于需要严格性能的加工制品。
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公开(公告)号：US6111137A
公开(公告)日：2000-08-29
申请号：US986795
申请日：1997-12-08
申请人： Hiroshi Suizu , Masanobu Ajioka
发明人： Hiroshi Suizu , Masanobu Ajioka
IPC分类号： C07C51/487 , C08G63/06 , C07C51/42 , C07C59/08
CPC分类号： C08G63/06 , C07C51/487
摘要： A process for treating pyruvic acid and other impurities of lactic acid by reduction treatment of an aqueous lactic acid solution and for obtaining high quality lactic acid having a substantially no pyruvic acid content, high purity, excellent heat stability and improved smell. Further, a high molecular weight polylactic acid having low coloration and consistent quality can be prepared by dehydration polycondensation of lactic acid obtained by the reduction treatment.
摘要翻译： 通过乳酸水溶液的还原处理和用于获得基本上不含丙酮酸含量，高纯度，优异的热稳定性和改善的气味的高品质乳酸来处理丙烯酸和其他乳酸杂质的方法。 此外，通过还原处理得到的乳酸的脱水缩聚可以制备着色低，质量一致的高分子量聚乳酸。
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