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公开(公告)号：US07544746B2
公开(公告)日：2009-06-09
申请号：US10516055
申请日：2003-05-30
IPC分类号： C08L77/06
CPC分类号： C08G83/005 , C08G63/08
摘要： A process for preparing a hyperbranched polymer having a weight-average molar mass of at least 30,000, includes coupling a first prepolymer having at least three functional end groups with a second prepolymer having at least two functional end groups by a dehydration condensation reaction between the end groups in the prepolymers. The number of arms and/or molar mass of the functionalized prepolymers can accurately be adjusted, thus affecting the properties of the resulting hyperbranched polymer in a desired way. The polymer can be equipped e.g. with hydrophobic and hydrophilic parts. Also, the number of functional end groups, that optionally can be used for further chemical reactions, in the hyperbranched polymer can easily be adjusted to a desired level. The hyperbranched high molar mass polymer can be prepared in high yields without the use of organic solvents or linking compounds, which is advantageous from an environmental as well as an economical point of view.
摘要翻译： 一种制备重均摩尔质量至少为30,000的超支化聚合物的方法包括将具有至少三个官能端基的第一预聚物与具有至少两个官能端基的第二预聚物通过末端的脱水缩合反应 预聚物中的基团。 可以精确地调节官能化预聚物的臂数和/或摩尔质量，从而以期望的方式影响所得超支化聚合物的性质。 聚合物可以配备例如 具有疏水和亲水部分。 此外，可以将超支化聚合物中可任选地用于进一步化学反应的官能端基的数目容易地调整到所需的水平。 超支化的高摩尔质量聚合物可以以高产率制备而不使用有机溶剂或连接化合物，这从环境以及经济角度来看是有利的。
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公开(公告)号：US20080177009A1
公开(公告)日：2008-07-24
申请号：US12017498
申请日：2008-01-22
IPC分类号： C08G63/06
CPC分类号： C08L67/04 , C08L2666/18
摘要： A blend of a multiply branched lactic acid polymer of one steric configuration with a linear lactic acid polymer of the opposite steric configuration has different and more useful properties than either component alone.
摘要翻译： 一种立体构型的多支化乳酸聚合物与相对立体构型的线性乳酸聚合物的共混物与单独的组分具有不同的和更有用的性质。
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公开(公告)号：US07919566B2
公开(公告)日：2011-04-05
申请号：US12017498
申请日：2008-01-22
IPC分类号： C08G67/00
CPC分类号： C08L67/04 , C08L2666/18
摘要： A blend of a multiply branched lactic acid polymer of one steric configuration with a linear lactic acid polymer of the opposite steric configuration has different and more useful properties than either component alone.
摘要翻译： 一种立体构型的多支化乳酸聚合物与相反立体构型的线性乳酸聚合物的共混物与单独的组分具有不同的和更有用的性质。
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公开(公告)号：US07795358B2
公开(公告)日：2010-09-14
申请号：US12035773
申请日：2008-02-22
IPC分类号： C08G63/08
CPC分类号： C08L67/04 , C08L2666/18
摘要： Poly(lactic acid) blends having a relatively high heat distortion temperature can be prepared by simple blending of PLA polymers of opposite stereoforms, followed by processing, e.g. by injection molding, under specific conditions of temperature and pressure, so as to produce a blend which, on differential scanning calorimetry, exhibits two peaks within the melting range of the stereocomplex. Moreover, by careful selection of these conditions of temperature and pressure, it is possible to use PLA polymers of significantly higher molecular weights than previously thought possible.
摘要翻译： 具有相对高的热变形温度的聚（乳酸）共混物可以通过简单混合相对立体形式的PLA聚合物，然后加工，例如， 通过注射成型，在特定的温度和压力条件下，以产生在差示扫描量热法上在立体络合物的熔融范围内显示两个峰的共混物。 此外，通过仔细选择这些温度和压力条件，可以使用比先前认为可能的显着更高分子量的PLA聚合物。
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公开(公告)号：US20090286927A1
公开(公告)日：2009-11-19
申请号：US12480221
申请日：2009-06-08
摘要： The present invention is directed to a process for preparing a hyperbranched polymer having a weight-average molar mass of at least 30,000, comprising coupling a first prepolymer having at least three functional end groups with a second prepolymer having at least two functional end groups by a dehydration condensation reaction between the end groups in the prepolymers. According to the present invention the number of arms and/or molar mass of the functionalized prepolymers can accurately be adjusted, thus affecting the properties of the resulting hyperbranched polymer in a desired way. Thus the polymer can be equipped e.g. with hydrophobic and hydrophilic parts. Also, the number of functional end groups, that optionally can be used for further chemical reactions, in the hyperbranched polymer can easily be adjusted to a desired level. The hyperbranched high molar mass polymer can be prepared in high yields without the use of organic solvents or linking compounds, which is advantageous from an environmental as well as an economical point of view.
摘要翻译： 本发明涉及一种制备重均摩尔质量至少为30,000的超支化聚合物的方法，包括将具有至少三个官能端基的第一预聚物与具有至少两个官能端基的第二预聚物偶联 预聚物中端基之间的脱水缩合反应。 根据本发明，可以精确地调节官能化预聚物的臂数和/或摩尔质量，从而以期望的方式影响所得超支化聚合物的性质。 因此，聚合物可以配备例如 具有疏水和亲水部分。 此外，可以将超支化聚合物中可任选地用于进一步化学反应的官能端基的数目容易地调整到所需的水平。 超支化的高摩尔质量聚合物可以以高产率制备而不使用有机溶剂或连接化合物，这从环境以及经济角度来看是有利的。
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公开(公告)号：US20090036600A1
公开(公告)日：2009-02-05
申请号：US12067987
申请日：2005-09-28
摘要： The present invention describes a polyhydroxycarboxylic acid having bimodal or multimodal molar mass distribution, a process for the preparation thereof, the use of an aromatic diol having a single benzene ring for the preparation of polyhydroxycarboxylic acid, in particular polyhydroxycarboxylic acid having bimodal or multimodal molar mass distribution, as well as a method of preparing injection-molded goods or blown film, polymer blends, composite materials or nanocomposite materials using said polyhdroxycarboxylic acid.
摘要翻译： 本发明描述了具有双峰或多峰摩尔质量分布的多羟基羧酸，其制备方法，使用具有单个苯环的芳族二醇用于制备聚羟基羧酸，特别是具有双峰或多峰摩尔质量的聚羟基羧酸 分布，以及使用所述多羟基羧酸制备注塑产品或吹塑薄膜，聚合物共混物，复合材料或纳米复合材料的方法。
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公开(公告)号：US20080221265A1
公开(公告)日：2008-09-11
申请号：US10516055
申请日：2003-05-30
IPC分类号： C08G63/60
CPC分类号： C08G83/005 , C08G63/08
摘要： A process for preparing a hyperbranched polymer having a weight-average molar mass of at least 30,000, includes coupling a first prepolymer having at least three functional end groups with a second prepolymer having at least two functional end groups by a dehydration condensation reaction between the end groups in the prepolymers. The number of arms and/or molar mass of the functionalized prepolymers can accurately be adjusted, thus affecting the properties of the resulting hyperbranched polymer in a desired way. The polymer can be equipped e.g. with hydrophobic and hydrophilic parts. Also, the number of functional end groups, that optionally can be used for further chemical reactions, in the hyperbranched polymer can easily be adjusted to a desired level. The hyperbranched high molar mass polymer can be prepared in high yields without the use of organic solvents or linking compounds, which is advantageous from an environmental as well as an economical point of view.
摘要翻译： 一种制备重均摩尔质量至少为30,000的超支化聚合物的方法包括将具有至少三个官能端基的第一预聚物与具有至少两个官能端基的第二预聚物通过末端的脱水缩合反应 预聚物中的基团。 可以精确地调节官能化预聚物的臂数和/或摩尔质量，从而以期望的方式影响所得超支化聚合物的性质。 聚合物可以配备例如 具有疏水和亲水部分。 此外，可以将超支化聚合物中可任选地用于进一步化学反应的官能端基的数目容易地调整到所需的水平。 超支化的高摩尔质量聚合物可以以高产率制备而不使用有机溶剂或连接化合物，这从环境以及经济角度来看是有利的。
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公开(公告)号：US20080207840A1
公开(公告)日：2008-08-28
申请号：US12035773
申请日：2008-02-22
IPC分类号： C08L67/04
CPC分类号： C08L67/04 , C08L2666/18
摘要： Polylactic acid blends having a relatively high heat distortion temperature can be prepared by simple blending of PLA polymers of opposite stereoforms, followed by processing, e.g. by injection moulding, under specific conditions of temperature and pressure, so as to produce a blend which, on differential scanning calorimetry, exhibits two peaks within the melting range of the stereocomplex. Moreover, by careful selection of these conditions of temperature and pressure, it is possible to use PLA polymers of significantly higher molecular weights than previously thought possible.
摘要翻译： 具有相对高的热变形温度的聚乳酸共混物可以通过简单混合相对立体形式的PLA聚合物，然后加工，例如， 通过注射成型，在特定的温度和压力条件下，以产生在差示扫描量热法上在立体络合物的熔融范围内显示两个峰的共混物。 此外，通过仔细选择这些温度和压力条件，可以使用比先前认为可能的显着更高分子量的PLA聚合物。
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