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1. 发明授权

US06365709B1 Method of reducing the quantity of residual monomers in aqueous dispersions of polymers 失效
标题翻译：降低聚合物水分散体中残留单体数量的方法
公开(公告)号：US06365709B1
公开(公告)日：2002-04-02
申请号：US09786273
申请日：2001-03-02
申请人： Claudia Heibel , Roland Baumstark
发明人： Claudia Heibel , Roland Baumstark
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, b1) of an &agr;-hydroxycarbonyl compound where R2 and R3 independently of one another are hydrogen and/or a C1-C12-alkyl group which may contain functional groups and/or may be olefinically unsaturated, or R2 and R3 optionally, by way of methylene groups, form a ring structure which may contain functional groups and/or may be olefinically unsaturated, and/or b2) of a compound which in aqueous medium releases such &agr;-hydroxycarbonyl compounds, and c) advantageously, 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，b1）其中R 2和R 3彼此独立地是氢和/或可以含有官能团和/或可以是烯属不饱和的C 1 -C 12 - 烷基的α-羟基羰基化合物，或 R2和R3任选地通过亚甲基形成环状结构，其可以含有在水性介质中释放这种α-羟基羰基化合物的化合物的官能团和/或可以是烯属不饱和和/或orb2），和c）优势催化量的能够以多个价态存在的多价金属离子。

2. 发明授权

US06444760B1 Method of reducing the content of residual monomers in aqueous polymer dispersions 失效
标题翻译：降低水性聚合物分散体中残留单体含量的方法
公开(公告)号：US06444760B1
公开(公告)日：2002-09-03
申请号：US09508104
申请日：2000-03-17
申请人： Robert Rupaner , Gerhard Bauer , Sven Lawrenz , Claudia Heibel , Johannes Dobbelaar
发明人： Robert Rupaner , Gerhard Bauer , Sven Lawrenz , Claudia Heibel , Johannes Dobbelaar
IPC分类号： C08F600
CPC分类号： C08F6/006
摘要： A process is described for effectively reducing the residual monomer content of an aqueous polymer dispersion by aftertreatment at atmospheric pressure or above with an initiator system comprising a) a hydroperoxide, hydrogen peroxide or a peracid, and b) an &agr;-hydroxy carboxylic acid, such as tartaric acid, or with a salt thereof.
摘要翻译：描述了一种方法，用于通过包括a）氢过氧化物，过氧化氢或过酸的引发剂体系，和b）α-羟基羧酸，在大气压或以上的后处理有效降低聚合物水分散体的残留单体含量，作为酒石酸，或其盐。

3. 发明授权

US06291573B1 Preparation of polymer powders 失效
标题翻译：聚合物粉末的制备
公开(公告)号：US06291573B1
公开(公告)日：2001-09-18
申请号：US09210765
申请日：1998-12-14
申请人： Joachim Pakusch , Bernd Reck , Peter Claassen , Hans-Jürgen Denu , Eckehardt Wistuba , Claudia Heibel
发明人： Joachim Pakusch , Bernd Reck , Peter Claassen , Hans-Jürgen Denu , Eckehardt Wistuba , Claudia Heibel
IPC分类号： C08L2904
CPC分类号： C08J3/16 , C04B24/2676 , C04B24/2688 , C04B26/04 , C04B2103/0057 , C08J2325/08
摘要： The present invention relates to a process for preparing polymer powders from aqueous polymer dispersions in which the dispersed polymer P comprises in copolymerized form: i) at least one vinylaromatic monomer (a), ii) 1,3-butadiene as monomer (b), and iii) one or more monomers (c) different than the monomers (a) and (b), which comprises drying the aqueous polymer dispersion in the presence of polyvinyl alcohol as drying agent. The present invention also relates to the polymer powders obtainable by this process and to the use of these polymer powders as binders in paints, varnishes and coating compositions generally, in adhesives, and for modifying mineral construction materials. The present invention also relates to mineral construction materials in the form of dry formulations comprising the polymer powders of the invention.
摘要翻译：本发明涉及一种由聚合物水分散体制备聚合物粉末的方法，其中分散的聚合物P以共聚形式包含：i）至少一种乙烯基芳族单体（a），ii）1,3-丁二烯作为单体（b），和ii）与单体（a）和（b）不同的一种或多种单体（c），其包括在聚乙烯醇存在下干燥聚合物水分散体作为干燥剂。本发明还涉及通过该方法获得的聚合物粉末以及这些聚合物粉末作为粘合剂在粘合剂中的用途，通常用于粘合剂和用于改性矿物建筑材料中的粘合剂。本发明还涉及包含本发明的聚合物粉末的干制剂形式的矿物构造材料。

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