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公开(公告)号：US5668186A
公开(公告)日：1997-09-16
申请号：US618742
申请日：1996-03-20
CPC分类号： C08J11/18 , C08J2367/02 , Y02W30/706
摘要： The invention relates to a novel process for depolymerizing polyesters by subjecting the polyesters to catalysts and organic solvents which are substantially free of oxygen and water in order to produce macrocyclic polyester oligomers substantially free of hydroxybutyl terminated linear impurities.
摘要翻译： 本发明涉及通过使聚酯经受基本上不含氧和水的催化剂和有机溶剂来解聚聚酯的新方法，以便制备基本上不含羟基丁基封端的线性杂质的大环聚酯低聚物。
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2.发明授权Titanate esters useful as polymerization initiators for macrocylic polyester oligomers 失效可用作大分子聚酯低聚物聚合引发剂的钛酸酯
公开(公告)号：US5661214A
公开(公告)日：1997-08-26
申请号：US695155
申请日：1996-08-05
CPC分类号： C08G63/85
摘要： Macrocyclic polyester oligomer compositions are polymerized to high molecular weight polyesters by heating with a titanate ester composition comprising moieties having oxygen or nitrogen chelated with a titanium atom or having two titanium atom connected by alkylene ester units. Depending on the chemical nature of the initiator, the polymerization reaction may be extremely rapid as desired for structural reaction injection molding, or may have an induction period as desired for resin transfer molding.
摘要翻译： 将大环聚酯低聚物组合物通过用包含与钛原子螯合的氧或氮螯合的钛酸酯组合物或通过亚烷基酯单元连接的两个钛原子加热而聚合成高分子量聚酯。 取决于引发剂的化学性质，聚合反应可以如结构反应注射成型所需的那样非常快，或者可以具有树脂传递模塑所需的诱导期。
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公开(公告)号：US5767225A
公开(公告)日：1998-06-16
申请号：US851232
申请日：1997-05-05
CPC分类号： C08G64/06 , C08G64/307
摘要： Disclosed are copolycarbonate compositions comprising structural units of Formula I ##STR1## Formula II ##STR2## wherein R.sup.2 represents --CH.sub.3, --C.sub.2 H.sub.5, or propyl; A is a divalent organic moiety; and wherein the ratio of Formula I to Formula II in the copolycarbonate is from about 99.8:0.2 to about 90:10.
摘要翻译： 公开了包含式I结构单元的共聚碳酸酯组合物，其中R 2表示-CH 3，-C 2 H 5或丙基; A是二价有机部分; 并且其中所述共聚碳酸酯中式I与式II的比例为约99.8:0.2至约90:10。
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公开(公告)号：US5710086A
公开(公告)日：1998-01-20
申请号：US618738
申请日：1996-03-20
CPC分类号： C08G63/85 , B01J31/1805 , B01J31/223 , B01J31/2239 , C07F7/006 , B01J2531/0216 , B01J2531/0247 , B01J2531/46 , B01J31/0212
摘要： Reaction mixtures prepared from tetraalkyl titanates and mixtures of glycols, said reaction mixtures comprising titanium bisglycoxide oligomers, may be used as depolymerization catalysts for conversion of linear polyesters to macrocyclic polyester oligomers.
摘要翻译： 由四烷基钛酸盐和二醇的混合物制备的反应混合物，所述反应混合物包括双羟基碳酸二烷基酯低聚物，可用作用于将线性聚酯转化为大环聚酯低聚物的解聚催化剂。
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公开(公告)号：US20100262366A1
公开(公告)日：2010-10-14
申请号：US12568692
申请日：2009-09-29
申请人： Qing Cao , Patricia Denise Mackenzie , Joseph James Salvo , Judith Ann Serth-Guzzo , Bouchra Bouqata , Joseph Edward Jesson , Robert August Graziano, JR.
发明人： Qing Cao , Patricia Denise Mackenzie , Joseph James Salvo , Judith Ann Serth-Guzzo , Bouchra Bouqata , Joseph Edward Jesson , Robert August Graziano, JR.
CPC分类号： G08G1/20 , G06Q10/047
摘要： A mileage estimation system comprising a data collection module, a route determination module, a learning module, and a mileage calculation module is provided. The data collection module receives data corresponding to a position and time of a moving asset from a remote location and the route determination module obtains information from a map database for determining a plurality of routes between at least two location of the moving asset. The learning module in the system determines a route travelled by the moving asset from the plurality of routes based on mileage estimation criterion, and the mileage calculation module estimates the distance travelled by the moving asset based on the route travelled by the moving asset.
摘要翻译： 提供了一种包括数据采集模块，路线确定模块，学习模块和里程计算模块的里程估计系统。 数据收集模块从远程位置接收与移动资产的位置和时间对应的数据，并且路线确定模块从地图数据库获取用于确定移动资产的至少两个位置之间的多条路线的信息。 系统中的学习模块基于里程估计准则确定由多条路线移动资产行驶的路线，里程计算模块根据移动资产所行驶的路线估计移动资产行驶的距离。
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