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1.发明授权Process for preparation of oxymethylene polymers in a homogeneous phase, and use 失效在均相中制备甲醛聚合物的方法，并使用公开(公告)号：US07943726B2
公开(公告)日：2011-05-17
申请号：US11643223
申请日：2006-12-21
IPC分类号： C08G59/00
摘要： A process and an apparatus are described for preparation of oxymethylene polymers. This process encompasses polymerization, in a homogeneous phase, of a monomer which forms oxymethylene groups, as far as 90% of maximum conversion in the presence of an acetal of formaldehyde and of an initiator for cationic polymerization, followed by deactivation of the reaction mixture. The resultant oxymethylene polymers have alkyl ether end groups and are extremely stable.
摘要翻译： 描述了制备甲醛聚合物的方法和装置。 该方法包括在均相中聚合形成甲醛基的单体，在甲醛缩醛和阳离子聚合引发剂的存在下，最大转化率为90％，随后反应混合物失活。 所得的甲醛聚合物具有烷基醚端基并且非常稳定。
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2.发明授权Process for preparation of oxymethylene polymers, selected polymers, and their use 失效制备甲醛聚合物，选择的聚合物及其用途的方法公开(公告)号：US07812110B2
公开(公告)日：2010-10-12
申请号：US11643131
申请日：2006-12-21
IPC分类号： C08G12/00
摘要： A process is described for preparation of oxymethylene homo- and copolymers. This encompasses heterogeneous polymerization of a monomer which forms oxymethylene groups in the presence of an acetal of formaldehyde and of an initiator for cationic polymerization, followed by the deactivation of the polymer in a homogeneous phase via treatment with a basic aprotic solvent or with an aprotic solvent which comprises a base. Oxymethylene homopolymers with very high stability are also described.
摘要翻译： 描述了制备甲醛均聚物和共聚物的方法。 这包括在甲醛缩醛和阳离子聚合引发剂存在下形成甲醛基的单体的非均相聚合，然后通过用碱性非质子溶剂或非质子溶剂处理使均相中的聚合物失活 其包括基座。 还描述了具有非常高稳定性的亚甲基均聚物。
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3.发明授权公开(公告)号：US08742065B2
公开(公告)日：2014-06-03
申请号：US13482158
申请日：2012-05-29
IPC分类号： C08G65/34
摘要： Oxymethylene polymers having a bimodal distribution or having a distribution of higher modality and having a targeted content of a low molecular weight fraction of from 1 to 5 percent by mass are described. Moldings of these polymers are distinguished by high low-temperature notched impact strength associated with a high modulus of elasticity.
摘要翻译： 描述具有双峰分布或具有较高模态分布并且具有1至5质量％的低分子量分数的目标含量的甲醛聚合物。 这些聚合物的模制品通过与高弹性模量相关的高低温缺口冲击强度来区分。
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公开(公告)号：US20110077378A1
公开(公告)日：2011-03-31
申请号：US12787698
申请日：2010-05-26
CPC分类号： C08L67/025 , C08G2/06 , C08G2/10 , C08L59/02 , C08L2666/16
摘要： The present invention relates to a process for the preparation of oxymethylene polymers as well as oxymethylene polymers obtainable therefrom. The process includes polymerization of a monomer, which forms —CH2—O— units in the presence of an acetal of formaldehyde or a polyhydric alcohol and an initiator for cationic polymerization. The initiator may be a heteropoly acid or an acid salt thereof which is dissolved in an alkyl ester of a polybasic carboxylic acid.
摘要翻译： 本发明涉及一种制备甲醛聚合物的方法以及由其获得的甲醛聚合物。 该方法包括在甲醛或多元醇的缩醛和用于阳离子聚合的引发剂的存在下形成-CH 2 -O-单体的单体的聚合。 引发剂可以是杂多酸或其酸盐，其溶解在多元羧酸的烷基酯中。
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5.发明授权公开(公告)号：US08188211B2
公开(公告)日：2012-05-29
申请号：US12423682
申请日：2009-04-14
IPC分类号： C08G65/34
摘要： Oxymethylene polymers having a bimodal distribution or having a distribution of higher modality and having a targeted content of a low molecular weight fraction of from 1 to 5 percent by mass are described. Moldings of these polymers are distinguished by high low-temperature notched impact strength associated with a high modulus of elasticity.
摘要翻译： 描述具有双峰分布或具有较高模态分布并且具有1至5质量％的低分子量分数的目标含量的甲醛聚合物。 这些聚合物的模制品通过与高弹性模量相关的高低温缺口冲击强度来区分。
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6.发明授权公开(公告)号：US08133966B2
公开(公告)日：2012-03-13
申请号：US12423625
申请日：2009-04-14
IPC分类号： C08G12/00
摘要： Oxymethylene copolymers having a high proportion of terminal alkyl ether groups and having terminal hydroxyalkylene groups are described. These polymers are distinguished by high thermal stability and high hot water resistance. Furthermore, a process for the preparation of oxymethylene copolymers is described in which the polymerization of at least one monomer forming —CH2—O— units is effected in the presence of at least one acetal of formaldehyde and of at least one initiator of cationic polymerization and the initiator of cationic polymerization is used in an amount of less than or equal to 10−4 mol %, based on the amount of the monomers present at the beginning of the polymerization and forming —CH2—O— units, in which starting materials of the polymerization are used such that the content of water and formic acid at the beginning of the polymerization is less than or equal to 40 ppm, and in which the initiator and/or the active polymer chains are deactivated by treatment of the prepared polymer with a base-containing protic solvent.
摘要翻译： 描述了具有高比例的末端烷基醚基团并具有末端羟基亚烷基的甲醛共聚物。 这些聚合物的特征在于高热稳定性和高耐热水性。 此外，描述了制备甲醛共聚物的方法，其中形成-CH 2 -O-单元的至少一种单体的聚合在至少一种甲醛缩醛和至少一种阳离子聚合引发剂的存在下进行，并且 基于聚合开始时存在的单体的量和形成-CH 2 -O-单元，阳离子聚合引发剂的用量小于或等于10-4mol％，其中起始原料为 使用聚合，使得聚合开始时的水和甲酸的含量小于或等于40ppm，并且其中引发剂和/或活性聚合物链通过用制备的聚合物处理而失活 含碱性质子溶剂。
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7.发明申请公开(公告)号：US20120232246A1
公开(公告)日：2012-09-13
申请号：US13482158
申请日：2012-05-29
IPC分类号： C08G65/06
摘要： Oxymethylene polymers having a bimodal distribution or having a distribution of higher modality and having a targeted content of a low molecular weight fraction of from 1 to 5 percent by mass are described. Moldings of these polymers are distinguished by high low-temperature notched impact strength associated with a high modulus of elasticity.
摘要翻译： 描述具有双峰分布或具有较高模态分布并且具有1至5质量％的低分子量分数的目标含量的甲醛聚合物。 这些聚合物的模制品通过与高弹性模量相关的高低温缺口冲击强度来区分。
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公开(公告)号：US07534922B2
公开(公告)日：2009-05-19
申请号：US11302290
申请日：2005-12-13
CPC分类号： C07C41/56 , C07C41/58 , Y02P20/127 , C07C43/303
摘要： A process for preparing acetals from aldehydes and alcohols is carried out by generating a reaction/distillation zone charged with an acidic fixed bed catalyst in a distillation column, feeding the aldehyde and the alcohol to the reaction/distillatlon zone and at least partly converting them to the acetal, heating the column bottom disposed below the reaction/distillation zone in order to at least partly evaporate the bottom's mixture and to establish a defined temperature in the reaction/distillation zone, feeding an extractant into a rectifying section of the column, disposed above the reaction/distillation zone and condensing a product having more than 90% by weight of acetal at the top of the column.
摘要翻译： 通过在蒸馏塔中生成装有酸性固定床催化剂的反应/蒸馏区，将醛和醇进料至反应/蒸馏区，并将其至少部分转化为 缩醛，加热设置在反应/蒸馏区下方的塔底，以便至少部分地蒸发底部的混合物并在反应/蒸馏区中建立限定的温度，将萃取剂进料到柱的精馏段中，其设置在 反应/蒸馏区，并将在塔顶部具有超过90重量％缩醛的产物冷凝。
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9.发明授权Process for the preparation of oxymethylene polymers and apparatus suitable for this purpose 有权用于制备甲醛聚合物的方法和适用于该目的的装置公开(公告)号：US08354495B2
公开(公告)日：2013-01-15
申请号：US12423653
申请日：2009-04-14
申请人： Michael Haubs , Eberhard Mann , Jürgen Lingnau
发明人： Michael Haubs , Eberhard Mann , Jürgen Lingnau
IPC分类号： C08G65/34
摘要： Process for the preparation of oxymethylene polymers and apparatus suitable for this purposeA process and an apparatus for the preparation of oxymethylene polymers is described. The process encompasses the polymerization of a monomer that forms oxymethylene groups, if appropriate in the presence of a cyclic acetal, together with an acetal of formaldehyde and with an initiator for cationic polymerization, preferably in a gas-tight kneader or extruder. The temperature profile of the polymerization here is designed in such a way that the polymerization mixture, which is initially heterogeneous by virtue of precipitating polymer, is converted to a homogeneous phase at the end of the polymerization. The homogeneous phase in which the polymer is present in liquid form is stabilized via addition of deactivators.After removal of volatile constituents, oxymethylene polymers are obtained with high thermal stability and with good mechanical properties.The oxymethylene polymers can be prepared at low energy cost and their properties can be adjusted as desired via prescription of the temperature profile during the polymerization.
摘要翻译： 描述了用于制备甲醛聚合物的方法和适用于该目的的设备描述了制备甲醛聚合物的方法和设备。 该方法包括在环状缩醛存在下适当形成甲醛基团的单体以及甲缩醛和阳离子聚合引发剂，优选在气密捏合机或挤出机中的聚合。 这里聚合的温度分布是这样设计的，即在聚合结束时，通过沉淀聚合物最初是非均相的聚合混合物被转化为均匀相。 聚合物以液体形式存在的均相是通过加入失活剂来稳定的。 除去挥发性成分后，得到具有高热稳定性和良好机械性能的甲醛聚合物。 甲醛聚合物可以以低能量成本制备，并且可以根据需要通过处理聚合过程中的温度曲线来调节它们的性能。
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