专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20050245655A1 Rapid crystallizing poly(trimethylene terephthalate) compositions and processes 审中-公开
标题翻译：快速结晶聚（对苯二甲酸丙二醇酯）组合物和方法
公开(公告)号：US20050245655A1
公开(公告)日：2005-11-03
申请号：US10836983
申请日：2004-04-30
申请人： Donald Kelsey , Cecilia Tse , Edward Denton , Kevin Allen , Emery Johnson
发明人： Donald Kelsey , Cecilia Tse , Edward Denton , Kevin Allen , Emery Johnson
IPC分类号： C08K5/00 , C08K5/04 , C08K5/098
CPC分类号： C08K5/0083 , C08K5/098 , C08L67/02
摘要： Small amounts of one or more alkali or alkaline earth metal salts, particularly lithium or calcium salts, added to polytrimethylene terephthalate (PTT) have been found to greatly accelerate the crystallization rate of the polymer. Preferably, from about 1 to about 10 ppm of the alkali or alkaline earth metal, based on metal, is effective. For example, 7 ppm of Li+ can produce about 5-20 times faster crystallization, depending on the rate of cooling, compared to PTT without lithium. The rapid-crystallizing PTT compositions are preferably comprised of carboxylate salt endgroups, COOM, wherein M is an alkali or alkaline earth metal cation, preferably lithium or calcium cation. The metal salt is conveniently added to the polymerization process.
摘要翻译：已经发现少量添加到聚对苯二甲酸丙二醇酯（PTT）中的碱金属或碱土金属盐，特别是锂或钙盐极大地加速了聚合物的结晶速率。优选地，基于金属，约1至约10ppm的碱金属或碱土金属是有效的。例如，与没有锂的PTT相比，7ppm的Li + +可以产生约5-20倍的结晶速度，这取决于冷却速率。快速结晶的PTT组合物优选由羧酸盐端基COOM组成，其中M是碱金属或碱土金属阳离子，优选锂或钙阳离子。金属盐方便地加入到聚合过程中。

2. 发明申请

US20060084783A1 Polytrimethylene terephthalate having a low level of acrolein and a process for producing the same 失效
标题翻译：具有低水平丙烯醛的聚对苯二甲酸丙二醇酯及其制备方法
公开(公告)号：US20060084783A1
公开(公告)日：2006-04-20
申请号：US11226176
申请日：2005-09-14
申请人： Donald Kelsey , Cecilia Tse , Robert Blackbourn , Holger Bachmann , Eckhard Seidel
发明人： Donald Kelsey , Cecilia Tse , Robert Blackbourn , Holger Bachmann , Eckhard Seidel
IPC分类号： C08G63/87
CPC分类号： D01F1/10 , C08G63/183 , C08G63/78 , C08K5/51 , C08K5/5333 , D01F6/62 , D01F6/92 , C08L67/02
摘要： The present invention provides a process of reducing acrolein byproduct from polytrimethylene terephthalate using selected phosphorous compounds to contact the polytrimethylene terephthalate or reactants in the process of producing polytrimethylene terephthalate. The selected phosphorous compounds are retained in the polytrimethylene terephthalate. The present invention also provides polytrimethylene terephthalate compositions containing amounts of phosphorous compounds.
摘要翻译：本发明提供了一种在制备聚对苯二甲酸丙二醇酯的过程中，使用选择的磷化合物与聚对苯二甲酸丙二醇酯或反应物接触来降低聚对苯二甲酸丙二醇酯的丙烯醛副产物的方法。所选择的磷化合物保留在聚对苯二甲酸丙二醇酯中。本发明还提供了含有磷化合物的聚对苯二甲酸丙二醇酯组合物。

3. 发明申请

US20060084781A1 Process for producing polytrimethylene terephthalate 失效
标题翻译：生产聚对苯二甲酸丙二醇酯的方法
公开(公告)号：US20060084781A1
公开(公告)日：2006-04-20
申请号：US11239858
申请日：2005-09-30
申请人： Donald Kelsey , Cecilia Tse , Emery Johnson
发明人： Donald Kelsey , Cecilia Tse , Emery Johnson
IPC分类号： C08G63/02
CPC分类号： C08G63/87 , C08G63/183 , C08G63/78 , C08G63/80
摘要： A process for the production of polytrimethylene terephthalate (PTT), wherein the process comprises: (i) one or more esterification steps, wherein terephthalic acid (TPA) or an alkyl diester of terephthalic acid is reacted with 1,3-propanediol (PDO); and (ii) one or more subsequent polycondensation steps, wherein the process further comprises the addition of a protic acid, other than terephthalic or isophthalic acid, before and/or during the one or more esterification steps, wherein the protic acid has a dissociation constant of at most 4 (pKa measured in water at 25° C.), and wherein the total amount of protic acid added before and/or during the one or more esterification steps is in the range of from 0.001 to 10 millimole of acid per kilogram of polytrimethylene terephthalate produced.
摘要翻译：聚对苯二甲酸丙二醇酯（PTT）的制备方法，其中该方法包括：（i）一种或多种酯化步骤，其中对苯二甲酸（TPA）或对苯二甲酸的烷基二酯与1,3-丙二醇（PDO）反应， ; 和（ii）一个或多个随后的缩聚步骤，其中所述方法还包括在所述一个或多个酯化步骤之前和/或期间加入除对苯二甲酸或间苯二甲酸之外的质子酸，其中所述质子酸具有解离常数在25℃下在水中测量的最多为4（pK ），并且其中在一个或多个酯化步骤之前和/或期间加入的质子酸的总量在每千克聚对苯二甲酸丙二醇酯产生0.001至10毫摩尔的酸。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式