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12 条记录 (耗时 0.019 秒)

    Method for reducing the quantity of residual monomers in aqueous polymeric dispersions
    4.
    发明授权
    Method for reducing the quantity of residual monomers in aqueous polymeric dispersions 失效
    降低水性聚合物分散体中残余单体量的方法

    公开(公告)号：US06433132B1

    公开(公告)日：2002-08-13

    申请号：US09784452

    申请日：2001-08-17

    申请人： Claudia Wood ,  Roland Baumstark ,  Johannes Dobbelaar

    发明人： Claudia Wood ,  Roland Baumstark ,  Johannes Dobbelaar

    IPC分类号： C08F600

    CPC分类号： C08F6/006

    摘要： A process for reducing the amount of residual monomer in aqueous polymer dispersions operates by aftertreatment with an initiator system essentially comprising a) from 0.001 to 5% by weight, based on the total monomer amount used to prepare the polymer dispersion, a1) of an oxidizing agent R1OOH,  where R1 is hydrogen or a C1-C8-alkyl or a C6-C12-aryl group, and/or a2) of a compound which in aqueous medium releases hydrogen peroxide, and b) from 0.005 to 5% by weight, based on the total monomer amount used to prepare the polymer dispersion, of a reducing agent prepared from b1) an aldehyde R2CH═O,  where R2 is a C1-C12-alkyl group which may contain functional groups and/or may be olefinically unsaturated, and b2) an inorganic dithionite, and c) catalytic amounts of a polyvalent metal ion which is able to exist in a plurality of valence states.

    摘要翻译： 用于降低聚合物水分散体中残余单体量的方法通过用引发剂体系进行后处理来操作，所述引发剂体系基本上包含a）0.001至5重量％，基于用于制备聚合物分散体的总单体量，a1）氧化剂 其中R1是氢或C1-C8烷基或C6-C12-芳基，和/或a2）在水性介质中释放过氧化氢的化合物，和b）0.005至5重量％，基于总单体 用于制备聚合物分散体的量，由b）醛，其中R2是可以含有官能团和/或可以是烯属不饱和的C1-C12-烷基，和b2）无机连二亚硫酸盐，和c）催化量 的能够以多个价态存在的多价金属离子。

    Removing residual volatiles from polymer dispersions
    6.
    发明授权
    Removing residual volatiles from polymer dispersions 有权
    从聚合物分散体中除去残留的挥发物

    公开(公告)号：US6096858A

    公开(公告)日：2000-08-01

    申请号：US338430

    申请日：1999-06-23

    申请人： Johannes Dobbelaar ,  Wolfgang Hubinger ,  Peter Keller ,  Bernd Stanger

    发明人： Johannes Dobbelaar ,  Wolfgang Hubinger ,  Peter Keller ,  Bernd Stanger

    IPC分类号： C08F6/00

    CPC分类号： C08F6/003 ,  C08F6/006

    摘要： The process of the present invention for removing residual volatiles from polymer dispersions by performing first chemical deodorization using an initiator to remove residual monomers and then physical deodorization to remove volatile constituents comprises conducting the chemical deodorization for as long as the decrease in monomers is greater than the increase in secondary components introduced into the dispersion by the initiator, to result reliably in polymer dispersions having a residual volatiles content of less than or equal to 100 ppm.

    摘要翻译： 通过使用引发剂进行第一次化学除臭以除去残余单体，然后进行物理除臭除去挥发性成分，本发明从聚合物分散体中除去残留挥发物的方法包括进行化学除臭，只要单体的减少大于 通过引发剂引入到分散体中的次级组分的增加，可靠地得到残留挥发物含量小于或等于100ppm的聚合物分散体。

    Process for cooling dispersions and liquids
    7.
    发明授权
    Process for cooling dispersions and liquids 有权
    冷却分散体和液体的方法

    公开(公告)号：US06086723A

    公开(公告)日：2000-07-11

    申请号：US134926

    申请日：1998-08-17

    申请人： Wolfgang Hubinger ,  Rainer Wunder ,  Gerhard Bauer ,  Johannes Dobbelaar ,  Sven Lawrenz ,  Franz-Josef Mueseler ,  Jurgen Nahstoll ,  Robert Rupaner ,  Christian-Ulrich Schmidt

    发明人： Wolfgang Hubinger ,  Rainer Wunder ,  Gerhard Bauer ,  Johannes Dobbelaar ,  Sven Lawrenz ,  Franz-Josef Mueseler ,  Jurgen Nahstoll ,  Robert Rupaner ,  Christian-Ulrich Schmidt

    IPC分类号： B01D17/00 ,  B01J19/00 ,  B01J19/24 ,  C08F6/00 ,  C08J3/03 ,  B01D3/10 ,  B01D3/38

    CPC分类号： B01J19/2465 ,  B01J19/0013 ,  C08F6/003 ,  B01J2219/00103 ,  B01J2219/00108 ,  B01J2219/0011 ,  B01J2219/00123 ,  B01J2219/0025 ,  Y10S203/90

    摘要： A process for deodorizing and subsequently cooling dispersions or liquids comprisinga) passing steam through the dispersion or liquid to be cooled and held in a vessel (1), said dispersion or liquid being caused to foam up as a result,b) discharging the foam from the top section of the vessel via a nozzle (5) into an evacuated separation vessel (4), the foam being broken in the process,c) condensing the water vapor formed from the foam in a heat exchanger (8) and removing volatile organic components at the same time, andd) returning the broken foam to the vessel (1),in which the steps a) to d) are performed until the dispersion or liquid has been deodorized to the desired extent, wherein, after completion of the deodorization (in accordance with steps a) to d)), the hot dispersion or liquid is discharged from the bottom section of the vessel (1) through the nozzle (5) into the evacuated separation vessel (4), so that the dispersion or the liquid is cooled, the nozzle (5) and the evacuated separation vessel (4) also being used beforehand for performing step b), wherein the water vapor held in the separation vessel (4) is condensed at the heat exchanger (8) which was also employed beforehand in step c), and wherein the cooled dispersion or liquid is discharged from the bottom of the separation vessel (4).

    摘要翻译： 一种用于除臭和随后冷却分散体或液体的方法，包括a）使蒸汽通过待冷却的分散体或液体并保持在容器（1）中，使所述分散体或液体发泡，结果b）排出泡沫 从容器的顶部经由喷嘴（5）到抽空的分离容器（4）中，泡沫在该过程中被破坏，c）将由泡沫形成的水蒸汽在热交换器（8）中冷凝并除去挥发性 有机成分，d）将破碎的泡沫返回到容器（1），其中进行步骤a）至d），直到分散体或液体已经被除臭至所需程度，其中在完成 除臭（根据步骤a）至d）），热分散体或液体通过喷嘴（5）从容器（1）的底部排出到抽空的分离容器（4）中，使得分散体 或液体被冷却，喷嘴（5）和e 真空分离容器（4）也预先用于进行步骤b），其中保持在分离容器（4）中的水蒸汽在步骤c）中预先使用的热交换器（8）冷凝，其中 冷却的分散体或液体从分离容器（4）的底部排出。