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1.发明授权
公开(公告)号：US5840811A
公开(公告)日：1998-11-24
申请号：US786253
申请日：1997-01-22
申请人： Yoji Hori , Tohru Kobayashi , Hideyuki Hongo , Akio Yamaguchi , Yoko Takahashi , Takashi Imai , Toshimitsu Hagiwara
发明人： Yoji Hori , Tohru Kobayashi , Hideyuki Hongo , Akio Yamaguchi , Yoko Takahashi , Takashi Imai , Toshimitsu Hagiwara
IPC分类号： C08G63/06 , C08G63/08 , C08G63/82 , C08L101/16 , C08G63/85
CPC分类号： C08G63/823 , C08G63/08
摘要： An optically active block polyester copolymer formed of structural units represented by the following general formulas (I) and (II): ##STR1## wherein represents for an asymmetric carbon atom and m and n each represents a natural number in the range of from 300 to 5000 is obtained by subjecting an optically active butyrolactone and a species of lactone other than the optically active butyrolactone to sequential ringopening copolymerization in the presence of a catalyst. This optically active block polyester copolymer possesses a high molecular weight and a high melting point (not less than 130.degree. C.) and forms a biodegradable and hydrolyzable material of high strength capable of tolerating the impacts of actual use.
摘要翻译： 由以下通式（I）和（II）表示的结构单元形成的光学活性嵌段聚酯共聚物：式（I）公制碳原子，m和n各自表示300-5000的自然数 是通过使光学活性丁内酯和除光学活性丁内酯以外的其他种类的内酯在催化剂存在下进行顺序环环化共聚获得的。 该光学活性嵌段聚酯共聚物具有高分子量和高熔点（不低于130℃），并形成能够耐受实际影响的高强度的可生物降解和可水解的材料。
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公开(公告)号：US5824751A
公开(公告)日：1998-10-20
申请号：US592518
申请日：1996-01-26
摘要： The biodegradable composition comprises at least poly(beta-hydroxybutyric acid) or a biodegradable copolymer thereof and a stereospecifically regular block copolymer having the structure units of formula (I): ##STR1## where R1 is a hydrocarbon group having 1 to 14 carbon atoms, optionally including double bonds, oxygen atoms or both of them; and m and n are respectively an integer ranging from 300 to 5,000, or having the structure units of formula (II): ##STR2## where R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are either a hydrogen atom or a methyl group; and m and n are respectively an integer ranging from 300 to 5,000.
摘要翻译： 可生物降解组合物至少包含聚（β-羟基丁酸）或其可生物降解的共聚物和具有式（I）结构单元的立体专一规则嵌段共聚物：其中R 1为具有1至14个碳原子的烃基 碳原子，任选地包括双键，氧原子或它们两者; m和n分别为300-5000的整数，或具有式（II）的结构单元：其中R 2，R 3，R 4和R 5为氢原子或甲基; m和n分别为300-5000的整数。
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3.发明授权Block copolymer of polyesters and polycarbonates and process for preparation thereof 失效聚酯和聚碳酸酯的嵌段共聚物及其制备方法
公开(公告)号：US5631344A
公开(公告)日：1997-05-20
申请号：US549544
申请日：1995-10-27
IPC分类号： C08G63/64 , C08G63/85 , C08G64/18 , C08L101/16 , C08G63/78
摘要： The block copolymer of polyesters and polycarbonates comprises at least one of each of the constituting units of (I) and (II) having the general formulae: ##STR1## where the sign * indicates an asymmetric carbon atom; R.sub.1, R.sup.2, R.sup.3 and R.sup.4 are either a hydrogen atom or a methyl group; m and n are respective a natural numbers ranging from 300 to 5000: The block copolymer is obtained by successive ring-opening and copolymerization of optically active .beta.-butyrolactones and cyclic carbonates in the presence of a catalyst.The block polymer obtained has high molecular weight and high melting temperature, and can thus be used as a high strength material for practical use and which has bio-degradable and hydrolyzable nature.
摘要翻译： 聚酯和聚碳酸酯的嵌段共聚物包含具有以下通式的（I）和（II）的每个构成单元中的至少一个：符号*表示不对称碳 原子; R1，R2，R3和R4是氢原子或甲基; m和n分别为300至5000的自然数：嵌段共聚物通过在催化剂存在下连续的开环和共聚光学活性的β-丁内酯和环状碳酸酯而获得。 所得到的嵌段聚合物具有高分子量和高熔点温度，因此可用作实际使用的高强度材料，其具有生物降解性和水解性。
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公开(公告)号：US6121343A
公开(公告)日：2000-09-19
申请号：US162506
申请日：1998-09-29
申请人： Hideyuki Hongo , Yoji Hori , Yasuo Fujiwara , Seiichi Abe , Minoru Hanada
发明人： Hideyuki Hongo , Yoji Hori , Yasuo Fujiwara , Seiichi Abe , Minoru Hanada
IPC分类号： A61K8/00 , A61K8/85 , A61K8/90 , A61K31/765 , A61Q13/00 , C08L67/04 , C08L101/16 , C11B9/00
CPC分类号： A61K8/85 , A61Q13/00 , A61K2800/56
摘要： A perfume-containing controlled release biodegradable resin composition which can release aroma of the included perfume gradually without changing its perfume tone and can be used in such applications as deodorants, etc. The resin composition includes a biodegradable resin which is a random or block copolymer polyester represented by the following formula (1): ##STR1## wherein R.sup.1 is a hydrocarbon radical having 1 to 15 carbon atoms, which is a divalent organic group that may be have a double bond or an oxygen atom but does not have a group represented by the formula ##STR2## wherein the symbol "*" is an asymmetric carbon atom. Each of m and n is 0 or an integer of 100 to 9,000, provided that m+n is within the range of 200 to 10,000. The molar ratio of the structural units [I] and [II] is 1-99:99-1 when m and n are not 0 and the number average molecular weight is 5,000 to 1,000,000, and a perfume such as a cyclic ether, a natural plant perfume, etc., is held in the biodegradable resin.
摘要翻译： 一种含香料的控释生物降解性树脂组合物，其可以逐渐释放所含香料的香味，而不改变其香料色调，并且可用于除臭剂等的应用中。树脂组合物包括可生物降解的树脂，其是无规或嵌段共聚物聚酯 由下式（1）表示：其中R 1是具有1至15个碳原子的烃基，其是可以具有双键或氧原子但不具有由下式表示的基团的二价有机基团：其中 符号“*”是不对称碳原子。 m和n分别为0或100〜9000的整数，条件是m + n在200〜10000的范围内。 当m和n不为0且数均分子量为5,000至1,000,000时，结构单元[I]和[II]的摩尔比为1-99:99-1，环状醚， 天然植物香料等保存在可生物降解的树脂中。
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公开(公告)号：US20080228013A1
公开(公告)日：2008-09-18
申请号：US12076153
申请日：2008-03-14
IPC分类号： C07C37/68
CPC分类号： C07C29/78 , A23L27/203 , C07B2200/07 , C07C2601/14 , C07C35/12
摘要： Crude menthol is dissolved in nitrile series solvent and then menthol is precipitated by cooling the solution to thereby obtain optically and chemically substantially pure menthol, the enantiomeric excess thereof being more than about 99% e.e. and the chemical purity being more than about 99%. Preferred examples of the nitrile series solvent include acetonitrile and propionitrile. The dissolution of crude menthol is carried out at a temperature below 42° C., which is the melting point of menthol. The cooling temperature in crystallization is preferably at a room temperature or a little lower temperature than the room temperature. After crystallization of menthol, additional purification process such as a distillation may be conducted, if necessary.
摘要翻译： 将粗薄荷醇溶解在腈系溶剂中，然后通过冷却溶液沉淀薄荷醇，从而获得光学和化学上基本上纯的薄荷醇，其对映异构体超过约99％e.e。 化学纯度大于约99％。 腈系溶剂的优选实例包括乙腈和丙腈。 粗薄荷醇的溶解在低于42℃的温度下进行，这是薄荷醇的熔点。 结晶中的冷却温度优选为室温或稍低于室温的温度。 在薄荷醇结晶后，如果需要，可以进行另外的纯化方法如蒸馏。
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公开(公告)号：US07459587B2
公开(公告)日：2008-12-02
申请号：US12076153
申请日：2008-03-14
CPC分类号： C07C29/78 , A23L27/203 , C07B2200/07 , C07C2601/14 , C07C35/12
摘要： Crude menthol is dissolved in nitrile series solvent and then menthol is precipitated by cooling the solution to thereby obtain optically and chemically substantially pure menthol, the enantiomeric excess thereof being more than about 99% e.e. and the chemical purity being more than about 99%. Preferred examples of the nitrile series solvent include acetonitrile and propionitrile. The dissolution of crude menthol is carried out at a temperature below 42° C., which is the melting point of menthol. The cooling temperature in crystallization is preferably at a room temperature or a little lower temperature than the room temperature. After crystallization of menthol, additional purification process such as a distillation may be conducted, if necessary.
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