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1. 发明授权

US06218532B1 High performance biodegradable materials from oriented starch derivatives 有权
标题翻译：来自定向淀粉衍生物的高性能可生物降解材料
公开(公告)号：US06218532B1
公开(公告)日：2001-04-17
申请号：US09467275
申请日：1999-12-20
申请人： James E. Mark , Brooke Zhao Peterson , Burak Eman , Ivet Bahar , Andrzej Kloczkowski
发明人： James E. Mark , Brooke Zhao Peterson , Burak Eman , Ivet Bahar , Andrzej Kloczkowski
IPC分类号： C07G1700
CPC分类号： D04H1/60 , B29C55/005 , B29D7/01 , B29K2003/00 , B29K2105/0061 , D01F9/00
摘要： The present invention involves the synthesis of a series of amylose (starch) derivatives with various degrees of substitution and amylose/amylopectin ratios. These chains are chemically crosslinked and then mechanically deformed (stretched) to produce a biodegradable and mechanically superior material. Specifically, the process consists of chemically modifying starch into starch derivatives such as starch ethers, starch esters and starch carbamates. The polymers have a percentage degree of substitution of from about 35% to about 95% (degree of substitution is from about 1.05 to about 2.85) and preferably have a percentage degree of substitution of from about 65% to about 90% (degree of substitution is from about 1.95 to about 2.70). The starch derivatives are crosslinked to obtain crosslinked chains and processed into sheets, films, fibers, threads or other articles as known in the art. After processing, the articles are swollen in a thermodynamically acceptable solvent or solvent mixture to a desired volume and deformed in a uniaxial or biaxial extension. The polymers materials are preferably stretched from about 1% to about 500% in the direction of stretching. Finally, the solvent is removed, yielding a homogeneous, highly-ordered material. The present invention improves the properties and the quality of sheets, films, fibers, threads or other articles with respect, for example, to mechanical strength. The materials are developed from starch, a natural renewable source which has low cost, high production levels and which replaces petroleum-based, synthetic polymers; the materials acquire high-strength, high-modulus, toughness and flexibility; and the materials exhibit structural and functional stability during processing, storage and use, yet are susceptible to biodegradation upon disposal.
摘要翻译：本发明涉及一系列具有不同取代度和直链淀粉/支链淀粉比例的直链淀粉（淀粉）衍生物的合成。这些链化学交联，然后机械变形（拉伸）以产生可生物降解和机械上优异的材料。具体来说，该方法包括将淀粉化学改性成淀粉衍生物如淀粉醚，淀粉酯和淀粉氨基甲酸酯。聚合物具有约35％至约95％的取代百分比（取代度为约1.05至约2.85），优选具有约65％至约90％的取代百分比（取代度为约1.95至约2.70）。将淀粉衍生物交联以获得交联链，并加工成如本领域已知的片，膜，纤维，线或其它制品。在加工之后，将物品在热力学上可接受的溶剂或溶剂混合物中溶胀至所需体积并在单轴或双轴延伸中变形。聚合物材料优选在拉伸方向上从约1％至约500％拉伸。最后，除去溶剂，得到均匀的高度有序的材料。本发明改进了例如机械强度的片材，薄膜，纤维，线或其他制品的性能和质量。该材料由淀粉，天然可再生能源开发，成本低，生产水平高，代替石油基合成聚合物; 该材料具有高强度，高模量，韧性和柔韧性; 并且该材料在加工，储存和使用期间表现出结构和功能稳定性，但在处理时易于生物降解。

2. 再颁专利

USRE38773E1 High performance biodegradable materials from oriented starch derivatives 失效
标题翻译：来自定向淀粉衍生物的高性能可生物降解材料
公开(公告)号：USRE38773E1
公开(公告)日：2005-08-09
申请号：US10137675
申请日：2002-05-02
申请人： James E. Mark , Brooke Zhao Peterson , Burak Eman , Ivet Bahar , Andrzej Kloczkowski
发明人： James E. Mark , Brooke Zhao Peterson , Burak Eman , Ivet Bahar , Andrzej Kloczkowski
IPC分类号： B29C49/08 , B29C55/00 , B29D7/01 , C07G99/00 , D01F9/00 , D02J1/06 , D04H1/60 , D04H1/64 , C07G17/00
CPC分类号： D04H1/60 , B29C55/005 , B29D7/01 , B29K2003/00 , B29K2105/0061 , D01F9/00
摘要： The present invention involves the synthesis of a series of amylose (starch) derivatives with various degrees of substitution and amylose/amylopectin ratios. These chains are chemically crosslinked and then mechanically deformed (stretched) to produce a biodegradable and mechanically superior material. Specifically, the process consists of chemically modifying starch into starch derivatives such as starch ethers, starch esters and starch carbamates. The polymers have a percentage degree of substitution of from about 35% to about 95% (degree of substitution is from about 1.05 to about 2.85) and preferably have a percentage degree of substitution of from about 65% to about 90% (degree of substitution is from about 1.95 to about 2.70). The starch derivatives are crosslinked to obtain crosslinked chains and processed into sheets, films, fibers, threads or other articles as known in the art. After processing, the articles are swollen in a thermodynamically acceptable solvent or solvent mixture to a desired volume and deformed in a uniaxial or biaxial extension. The polymers materials are preferably stretched from about 1% to about 500% in the direction of stretching. Finally, the solvent is removed, yielding a homogeneous, highly-ordered material. The present invention improves the properties and the quality of sheets, films, fibers, threads or other articles with respect, for example, to mechanical strength. The materials are developed from starch, a natural renewable source which has low cost, high production levels and which replaces petroleum-based, synthetic polymers; the materials acquire high-strength, high-modulus, toughness and flexibility; and the materials exhibit structural and functional stability during processing, storage and use, yet are susceptible to biodegradation upon disposal.
摘要翻译：本发明涉及一系列具有不同取代度和直链淀粉/支链淀粉比例的直链淀粉（淀粉）衍生物的合成。这些链化学交联，然后机械变形（拉伸）以产生可生物降解和机械上优异的材料。具体来说，该方法包括将淀粉化学改性成淀粉衍生物如淀粉醚，淀粉酯和淀粉氨基甲酸酯。聚合物具有约35％至约95％的取代百分比（取代度为约1.05至约2.85），优选具有约65％至约90％的取代百分比（取代度为约1.95至约2.70）。将淀粉衍生物交联以获得交联链，并加工成如本领域已知的片，膜，纤维，线或其它制品。在加工之后，将物品在热力学上可接受的溶剂或溶剂混合物中溶胀至所需体积并在单轴或双轴延伸中变形。聚合物材料优选在拉伸方向上从约1％至约500％拉伸。最后，除去溶剂，得到均匀的高度有序的材料。本发明改进了例如机械强度的片材，薄膜，纤维，线或其他制品的性能和质量。该材料由淀粉，天然可再生能源开发，成本低，生产水平高，代替石油基合成聚合物; 该材料具有高强度，高模量，韧性和柔韧性; 并且该材料在加工，储存和使用期间表现出结构和功能稳定性，但在处理时易于生物降解。

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