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91. 发明授权

US5143966A Vinyl acetate/ethylene copolymer emulsions having improved wet tack properties 失效
标题翻译：醋酸乙烯酯/乙烯共聚物乳液具有改善的湿热特性
公开(公告)号：US5143966A
公开(公告)日：1992-09-01
申请号：US609960
申请日：1990-11-07
申请人： Hsueh-Chi Lee , William E. Lenney
发明人： Hsueh-Chi Lee , William E. Lenney
IPC分类号： C08F2/24 , C08F2/22 , C08F2/30 , C08F10/00 , C08F210/02 , C08F218/00 , C08F218/02 , C08F218/08 , C08L31/04 , C09J131/04
CPC分类号： C08F218/08
摘要： In a vinyl acetate-ethylene copolymer emulsion prepared by the aqueous emulsion copolymerization of vinyl acetate and ethylene in the presence of a polyvinyl alcohol stabilizing system, the improvement which comprises a vinyl acetate-ethylene copolymer emulsion prepared in the presence of a stabilizing system consisting essentially of:(a) 0.2 top 1.5 wt % low molecular weight, partially hydrolyzed polyvinyl alcohol,(b) 0.5 to 2.5 wt % medium molecular weight, partially hydrolyzed polyvinyl alcohol, and(c) 1 to 4 wt % medium molecular weight and/or high molecular weight, fully hydrolyzed polyvinyl alcohol,the weight percentages based on vinyl acetate monomer.

92. 发明授权

US5045569A Hollow acrylate polymer microspheres 失效
标题翻译：中空丙烯酸酯聚合物微球
公开(公告)号：US5045569A
公开(公告)日：1991-09-03
申请号：US276767
申请日：1988-11-30
申请人： Joaquin Delgado
发明人： Joaquin Delgado
IPC分类号： C08J3/16 , C08F2/00 , C08F2/24 , C08F20/10 , C08L33/00 , C08L33/04 , C09J133/00 , C09J133/04 , C09J133/06
CPC分类号： C09J133/06 , C08F2/24 , C08L2205/20 , C09J2201/606 , Y10T428/2982
摘要： Hollow, polymeric, acrylate, infusible, inherently tacky, solvent-insoluble, solvent-dispersible, elastomeric pressure-sensitive adhesive microspheres having an average diameter of at least about 1 micrometer. Preferred microspheres are those wherein a majority of the hollow microspheres contain at least one of interior void having a diamter of at least 10% of the diameter of the microsphere.These hollow microspheres are useful as repositionable pressure-sensitive adhesives. The invention also provides pressure-sensitive adhesives consisting essentially of such hollow microspheres. Aqueous suspensions of these microspheres, processes for their preparation, spray repositionable pressure-sensitive adhesive compositions, and microsphere-coated sheet materials are also provided. Surprisingly, hollow microspheres of the invention show reduced or even eliminated adhesive transfer, in comparison with prior art repositionable pressure-sensitive adhesives which are based on solid microspheres.

93. 发明授权

US5021469A Binder for aqueous gloss paints 失效
标题翻译：水性光泽漆的粘合剂
公开(公告)号：US5021469A
公开(公告)日：1991-06-04
申请号：US468600
申请日：1990-01-23
申请人： Klaus Langerbeins , Wolfgang Klesse , Dieter Tessmer , Wilhelm Elser , Hans-Juergen Geyer
发明人： Klaus Langerbeins , Wolfgang Klesse , Dieter Tessmer , Wilhelm Elser , Hans-Juergen Geyer
IPC分类号： C08F265/00 , C08F2/22 , C08F2/24 , C08F285/00 , C08F291/00 , C09D151/00
CPC分类号： C09D151/00 , C08F285/00 , C08F291/00 , Y10S525/902
摘要： The inventive vehicle, or binder, for water based gloss paints contains, dispersed in a aqueous phase, particles of a multiphase emulsion polymer made up of(a) core material having a glass transition temperature exceeding 40.degree. C. and(b) a shell material having a glass transition temperature of less than 70.degree. C. and at least 20 K. below that of the core material.The particles have an average diameter of less than 200 nm. The composition of the shell material includes an emulsion polymer with at least 4 percent by weight of an ethylenically unsaturated carboxylic acid and more than 80 percent by weight of one or more monomers from the group consisting of styrene and alkyl esters of acrylic and/or methacrylic acid. Paint coats produced with this vehicle are distinguished by a high blocking point.
摘要翻译：用于水基光泽涂料的本发明的载体或粘合剂在水相中含有由（a）玻璃化转变温度超过40℃的芯材料组成的多相乳液聚合物颗粒，（b）壳材料的玻璃化转变温度低于70℃，至少20K以下。颗粒的平均直径小于200nm。壳材料的组成包括具有至少4重量％的烯键式不饱和羧酸和大于80重量％的一种或多种单体的乳液聚合物，所述单体来自苯乙烯和丙烯酸和/或甲基丙烯酸烷基酯酸。用这种车辆生产的油漆涂层被高阻挡点区分开来。

94. 发明授权

US5015713A Alkaline polymerization of carboxylated polymers 失效
标题翻译：羧基化聚合物的碱性聚合
公开(公告)号：US5015713A
公开(公告)日：1991-05-14
申请号：US342675
申请日：1989-04-26
申请人： Peter R. J. Blanpain , Hendrikus W. Leenders
发明人： Peter R. J. Blanpain , Hendrikus W. Leenders
IPC分类号： C08F2/24 , C08F236/04
CPC分类号： C08F2/24 , C08F236/04
摘要： Polymers containing acryloyloxy monomers may be prepared by emulsion polymerization at alkaline pH. This permits the use of unlined mild steel reactors to polymerize functional containing monomers.
摘要翻译：含有丙烯酰氧基单体的聚合物可以通过在碱性pH下的乳液聚合来制备。这允许使用无衬里的低碳钢反应器来聚合含官能的单体。

95. 发明授权

US5011883A Stabilized polymer latex composition 失效
标题翻译：稳定的聚合物胶乳组合物
公开(公告)号：US5011883A
公开(公告)日：1991-04-30
申请号：US476192
申请日：1990-02-07
申请人： Igor Aksman
发明人： Igor Aksman
IPC分类号： C08F299/02 , C08F2/24 , C08F290/00 , C08L21/02 , C08L67/08 , C09D129/04 , C09D157/00
CPC分类号： C09D129/04 , C09D157/00 , C08L67/08
摘要： Stabilized aqueous polymer latex compositions comprising: (A) a polymeric latex particle; (B) a protective colloid; and (C) a polyoxyalkylene-containing alkyd resin which is the reaction product of (i) at least one polyoxyalkylene, (ii) at least one polyol; (iii) at least one polycarboxylic acid anhydride; and (iv) at least one monocarboxylic acid are disclosed. Also detailed is a method of producing such a stabilized polymer latex composition.

96. 发明授权

US4973670A Method for preparing hollow latexes 失效
标题翻译：空心胶乳的制备方法
公开(公告)号：US4973670A
公开(公告)日：1990-11-27
申请号：US441006
申请日：1989-11-22
申请人： Charles J. McDonald , Yohannes Chonde , William E. Cohrs , Dalton C. MacWilliams
发明人： Charles J. McDonald , Yohannes Chonde , William E. Cohrs , Dalton C. MacWilliams
IPC分类号： C08F2/24 , B01J13/14 , B29B20060101 , C08C20060101 , C08F2/22 , C08F2/38 , C08F2/44 , C08F291/00 , C08J9/20 , C09D7/00 , C09D201/00 , D21H19/42
CPC分类号： B01J13/14 , C08F291/00 , Y10T428/2982 , Y10T428/2987 , Y10T428/2998
摘要： The present invention provides for a process for preparing hollow polymer latexes by a one stage emulsion polymerization. The first step invloves introducing an effective amount of a first charge of a organic phase to an aqueous phase. The first charge of the organic phase comprises monomer which is vertually insoluble in the aqeuous phase and an inert-nonpolymerizable hydrocarbon. The polymer formed from polymerizing the monomer is virtually insoluble in the hydrocarbon, the hydrocarbon is virtually insoluble in the aqueous phase and the monomer is miscible with the hydrocarbon. The monomer is polymerized to produce a low molecular weight polymer such that the low molecular weight polymer will phase separate from the organic phase and conentrates at the surface of the introduced organic phase forming a low molecular weight polymer phase. The second step involves introducing a second charge of the organic phase to the aqeuous phase, wherein the second charge of the organic phase comprises a crosslinking monomer. The crosslinking monomer is polymerized with the low molecular weight polymer to produce a hollow polymer latex particle.
摘要翻译：本发明提供了通过一步乳液聚合制备中空聚合物胶乳的方法。第一步是引入有效量的有机相的有效量至水相。有机相的第一次装料包括在水性相中不可溶的单体和惰性不可聚合的烃。通过聚合单体形成的聚合物实际上不溶于烃，烃基本上不溶于水相，并且单体可与烃混溶。将单体聚合以产生低分子量聚合物，使得低分子量聚合物将与有机相相分离并在导入的有机相的表面上凝聚，形成低分子量聚合物相。第二步涉及将有机相的第二次电荷引入至酸性相，其中有机相的第二电荷包含交联单体。交联单体与低分子量聚合物聚合以产生中空聚合物胶乳颗粒。

97. 发明授权

US4647612B1 失效
公开(公告)号：US4647612B1
公开(公告)日：1990-10-23
申请号：US81445885
申请日：1985-12-30
申请人： PPG INDUSTRIES INC
发明人： AJAY I RANKA , SURYYA K DAS
IPC分类号： C08F2/22 , C08F2/10 , C08F2/24 , C08F2/26 , C08F22/32 , C08F220/32 , C08F246/00 , C08F265/02 , C09D5/02 , C08L33/02 , C08L37/00
CPC分类号： C08F246/00 , C08F220/32 , C08F265/02

98. 发明授权

US4957983A Method for providing improved colloidal stability and polyvinyl chloride using a hot charge polymerization procedure with emulsifier package 失效
标题翻译：使用具有乳化剂包装的热电荷聚合方法提供改进的胶体稳定性和聚氯乙烯的方法
公开(公告)号：US4957983A
公开(公告)日：1990-09-18
申请号：US362627
申请日：1989-06-07
申请人： Roman B. Hawrylko , Richard A. Widdifield
发明人： Roman B. Hawrylko , Richard A. Widdifield
IPC分类号： C08F2/20 , C08F2/22 , C08F2/24 , C08F14/00 , C08F14/06
CPC分类号： C08F14/06 , Y02P20/52
摘要： A method for polymerizing polyvinyl chloride and polyvinyl chloride copolymers is provided in which a monomer slurry is formed by adding the monomers and water (hot or cold) in the reaction vessel, and the slurry is brought to reaction temperature. After a time delay of 0 to 15 minutes, an emulsifier package is added, and after a further time delay of 0 to 15 minutes, a catalyst emulsion is added. The emulsifier package comprises a primary emulsifier which is partially saponified polyvinyl alcohol having a degree of saponification between about 60 and about 90 mole percent and a solubility in methanol index at 55.degree. C. in a range of up to about 60 percent. A secondary emulsifier is included in the emulsifier package which is a preferably cellulosic type emulsifier. Preferably an additional emulsifier is added which is a hydrolyzed polyvinyl acetate having a degree of hydrolysis of at least 68 percent. The polymerization product has good bulk density and porosity parameters. Resins produced from this product have low fisheye characteristics.

99. 发明授权

US4921922A Production of tetrafluoroethylene polymers 失效
标题翻译：生产四氟乙烯聚合物
公开(公告)号：US4921922A
公开(公告)日：1990-05-01
申请号：US201209
申请日：1988-06-02
申请人： Terence E. Attwood , Richard F. Bridges
发明人： Terence E. Attwood , Richard F. Bridges
IPC分类号： C08F2/22 , C08F2/24 , C08F4/40 , C08F14/26 , C08F114/26
CPC分类号： C08F114/26 , C08F14/26
摘要： Production of coagulated dispersion grades of PTFE using an aqueous emulsion polymerization process which employs an initiator system comprising disuccinic acid peroxide and ammonium sulphite, the latter being added during the course of the polymerization. The resulting polymer can be fabricated into porous products of improved properties.

100. 发明授权

US4918135A Process for the preparation of aqueous polymer dispersions the dispersions obtained by the process and their use for the production of coatings 失效
标题翻译：制备聚合物水性聚合物的方法分散了通过该方法获得的分散体及其用于生产涂料的用途
公开(公告)号：US4918135A
公开(公告)日：1990-04-17
申请号：US335816
申请日：1989-04-10
申请人： Joachim Probst , Walter Schafer , Klaus Schuster , Heinrich Alberts , Hanns P. Muller , Adolf Schmidt , Wolfhart Wieczorrek
发明人： Joachim Probst , Walter Schafer , Klaus Schuster , Heinrich Alberts , Hanns P. Muller , Adolf Schmidt , Wolfhart Wieczorrek
IPC分类号： B01F17/52 , C08F2/24 , C08F2/26 , C09D133/06
CPC分类号： C08F2/24 , C09D133/06
摘要： An improved coating for heat resistant substrates is an aqueous dispersion of polymers prepared by polymerization of olefinically unsaturated monomers in an aqueous medium in the presence of radical formers and emulsifiers, wherein the emulsifiers are polyisocyanate addition products having a molecular weight below 20,000 and containing from 5 to 1000 milliequivalents of anionic structures corresponding to the following formula--NH--CO--N.sup..crclbar. --C.tbd.Nincorporated therein per 100 g of solids content.
摘要翻译：用于耐热基材的改进的涂层是通过在自由基形成剂和乳化剂存在下在水性介质中聚合烯属不饱和单体制备的聚合物的水分散体，其中乳化剂是分子量低于20,000的多异氰酸酯加成产物，并含有5 至每1000克固体含量相应于下式-NH-CO-N（ - ） - C 3BOND N的1000毫当量阴离子结构。

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