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公开(公告)号：US5413634A
公开(公告)日：1995-05-09
申请号：US238566
申请日：1994-05-05
CPC分类号： C04B24/023 , C04B24/10 , C04B24/32 , C04B28/02 , C04B2111/34
摘要： The invention relates to a cement composition containing a shrinkage reducing amount of an alkyl ether derivative of an aliphatic polyhydroxy compound of the formula:Q--[(A).sub.n --OR].sub.xwherein Q is a C.sub.3 -C.sub.12 aliphatic hydrocarbon group, R is hydrogen or C.sub.1 -C.sub.10 alkyl, at least one R being the C.sub.1 -C.sub.10 alkyl group, A is C.sub.2 -C.sub.4 oxyalkylene, n is 0-10, and x is 3-5.
摘要翻译： 本发明涉及含有减缩量的下式的脂肪族多羟基化合物的烷基醚衍生物的水泥组合物：Q- [（A）n -OR] x其中Q是C 3 -C 12脂族烃基，R是 氢或C1-C10烷基，至少一个R为C1-C10烷基，A为C2-C4氧化烯，n为0-10，x为3-5。
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12.发明授权
公开(公告)号：US5241118A
公开(公告)日：1993-08-31
申请号：US796499
申请日：1991-11-22
IPC分类号： B01J23/40 , B01J23/74 , B01J27/045 , B01J27/128 , C07B61/00 , C07C261/02 , C07C273/00 , C07C273/18 , C07C275/28 , C07D295/215
CPC分类号： C07D295/215 , C07C273/1809
摘要： A process for preparing trisubstituted ureas is disclosed. A nitroarene is reacted with carbon monoxide and a secondary amine in the presence of a Group VIII transition metal catalyst and optionally one or more promoters selected from primary amines, halide ion-containing compounds, and chelating phosphorus and nitrogen compounds.
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公开(公告)号：US5227483A
公开(公告)日：1993-07-13
申请号：US814543
申请日：1991-12-30
IPC分类号： C01B7/01 , C01B7/09 , C01B25/18 , C07C209/84
CPC分类号： C07C209/84 , C01B25/18 , C01B7/01 , C01B7/093
摘要： A process for recovering both an amine and a volatile acid from an amine salt is disclosed. In the process, the amine salt is reacted with a non-volatile acid to liberate the volatile acid. Thermal decomposition of the resulting amine/non-volatile acid salt liberates the amine.
摘要翻译： 公开了从胺盐中回收胺和挥发性酸的方法。 在此过程中，胺盐与非挥发性酸反应以释放挥发性酸。 得到的胺/非挥发性酸盐的热分解释放出胺。
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14.发明授权Process for the preparation of aromatic isocyanates from dialkyl ureas using an organic sulfonic acid promoter 失效使用有机磺酸促进剂从二烷基脲制备芳族异氰酸酯的方法
公开(公告)号：US4883908A
公开(公告)日：1989-11-28
申请号：US305356
申请日：1989-02-02
IPC分类号： C07C263/06
CPC分类号： C07C263/06
摘要： An improved process is provided for the preparation of aromatic mono- and poly-isocyanates by the thermal decomposition of an aromatic bis dialkyl urea in solvent in the presence of an organic sulfonic acid or sulfonated aromatic ion exchange resin as a promoter for conversion of the urea groups to isocyanates.
摘要翻译： 提供了一种通过在有机磺酸或磺化芳族离子交换树脂作为脲转化促进剂的存在下在溶剂中热分解芳族单 - 和多 - 异氰酸酯的改进方法 异氰酸酯基团。
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15.发明授权Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (diisocyanates) 失效亚甲基二亚苯基二异氰酸酯和聚亚甲基聚亚苯基聚（二异氰酸酯）的制备方法
公开(公告)号：US4873364A
公开(公告)日：1989-10-10
申请号：US283430
申请日：1988-12-09
IPC分类号： C07C263/06
CPC分类号： C07C263/06
摘要： An improved process is provided for the preparation of methylene diphenylene diisocyanates (MDI) and polymethylene polyphenylene poly (diisocyanates) by the thermal decomposition of a methylene diphenylene bis (dialkylurea) or a polymethylene polyphenylene poly (dialkylurea) in a solvent in the presence of a tertiary amine hydrohalide, such as pyridine hydrochloride, as a promoter for conversion of the urea groups to the corresponding isocyanate.
摘要翻译： 提供了一种通过亚甲基二亚苯基双（二烷基脲）或多亚甲基聚亚苯基聚（二烷基脲）在溶剂中在存在下进行热分解制备亚甲基二亚苯基二异氰酸酯（MDI）和多亚甲基聚亚苯基聚（二异氰酸酯）的改进方法 叔胺氢卤化物，例如吡啶盐酸盐，作为将脲基团转化成相应的异氰酸酯的促进剂。
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16.发明授权Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates 失效二苯基甲烷二氨基甲酸酯和多亚甲基多苯基氨基甲酸酯的制备方法
公开(公告)号：US4162362A
公开(公告)日：1979-07-24
申请号：US953135
申请日：1978-10-20
申请人： Edward T. Shawl
发明人： Edward T. Shawl
IPC分类号： C07C269/00 , C07C67/00 , C07C239/00 , C07C271/06 , C07C271/28 , C07C125/04
CPC分类号： C07C271/06
摘要： Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the condensation of N-aryl carbamic acid esters, such as ethylphenylcarbamate, with formaldehyde, para-formaldehyde or trioxane in the presence of an organic sulfonic or halogenated organic sulfonic acid which has an acid concentration of at least 75 percent, at temperatures of from ambient to about 170.degree. C. and optionally in the presence of an inert solvent.
摘要翻译： 二苯基甲烷二氨基甲酸酯和这些化合物的多亚甲基多苯基氨基甲酸酯同系物和衍生物通过N-芳基氨基甲酸酯如乙基苯基氨基甲酸酯与甲醛，对甲醛或三恶烷在有机磺酸或卤代有机磺酸存在下缩合来制备， 在环境温度至约170℃，任选在惰性溶剂存在下，具有至少75％的酸浓度。
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公开(公告)号：US07563740B2
公开(公告)日：2009-07-21
申请号：US11641317
申请日：2006-12-19
IPC分类号： B01J37/08 , B01J29/068 , C07D301/06
CPC分类号： B01J37/0018 , B01J29/89 , B01J31/1616 , B01J2229/20 , B01J2229/42 , B01J2231/72 , B01J2531/821 , B01J2531/824 , B01J2531/825 , B01J2531/827 , B01J2531/828 , C08F290/062 , C08F290/142 , C08L51/08 , C08L2666/02
摘要： A catalyst comprising a transition metal zeolite and a noble metal is disclosed. The catalyst is prepared by an extrusion method using a comb-branched polymer as an extrusion aid. The catalyst is used in a reaction to produce epoxide from an olefin, hydrogen, and oxygen. The comb-branched polymer improves the mechanical properties of the extrudate.
摘要翻译： 公开了一种包含过渡金属沸石和贵金属的催化剂。 催化剂通过使用梳状支化聚合物作为挤出助剂的挤出方法制备。 催化剂用于从烯烃，氢气和氧气中产生环氧化物的反应中。 梳状支化聚合物改善了挤出物的机械性能。
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公开(公告)号：US07232875B1
公开(公告)日：2007-06-19
申请号：US11430758
申请日：2006-05-09
IPC分类号： C08F220/64 , C08F118/02
CPC分类号： C08F290/04 , C08F265/00 , C08F265/02 , C08F265/04 , C08F283/06 , C08F290/062 , C08L51/003 , C08L2666/02
摘要： A comb-branched polymer is disclosed. The polymer comprises recurring units of an unsaturated carboxylic monomer, an oxypropylene-rich poly(oxyethylene-oxypropylene) macromonomer and an oxyethylene-rich poly(oxyethylene-oxypropylene) macromonomer. The comb-branched polymer can be used as a water reducing agent in cement. It gives significantly lower air entrainment in cement admixture.
摘要翻译： 公开了梳状支化聚合物。 聚合物包含不饱和羧酸单体，富含氧丙烯的聚（氧乙烯 - 氧丙烯）大分子单体和富含氧亚乙烯的聚（氧乙烯 - 氧丙烯）大分子单体的重复单元。 梳状支化聚合物可用作水泥中的减水剂。 它在水泥混合物中显着降低了空气夹带。
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19.发明授权
公开(公告)号：US6034208A
公开(公告)日：2000-03-07
申请号：US74673
申请日：1998-05-08
CPC分类号： C08G18/635 , C08F2/40 , C08G18/636 , C08G65/10 , C08G65/2609 , C08G65/2615 , C08G65/2663 , C08G65/2696
摘要： Unique, well defined macromonomers containing hydroxyl-functionality, unsaturation-functionality, and polyoxyalkylene segments are prepared by oxyalkylating an unsaturated initiator molecule having at least one oxyalkylatable hydrogen in the presence of an effective amount of a double metal cyanide complex catalyst, optionally, when necessary, in the presence of a free radical polymerization inhibitor. The resulting unsaturated macromonomers are eminently suitable for such uses as copolymerization with ethylenically unsaturated monomers containing carboxylic acid-based groups such as acrylic acid to form effective superplasticizers and water reducers for cement and concrete applications.
摘要翻译： 含有羟基官能团，不饱和官能度和聚氧化烯链段的独特的，明确定义的大单体通过在有效量的双金属氰化物配合物催化剂存在下，任选地，当需要时，使具有至少一个可氧化烷基化氢的不饱和引发剂分子 在自由基聚合抑制剂存在下进行。 所得的不饱和大单体非常适用于与含有羧酸基团的烯属不饱和单体如丙烯酸共聚形成用于水泥和混凝土应用的有效超增塑剂和减水剂的用途。
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公开(公告)号：US5985989A
公开(公告)日：1999-11-16
申请号：US890092
申请日：1997-07-09
申请人： Edward T. Shawl , Xinhau Zhou
发明人： Edward T. Shawl , Xinhau Zhou
IPC分类号： C04B24/28 , C04B24/26 , C04B24/32 , C04B103/32 , C08F2/44 , C08F8/14 , C08G81/02 , C08L71/02 , C08K5/06
CPC分类号： C04B24/2647 , C04B24/267 , C08L71/02 , C04B2103/302 , C04B2103/32
摘要： Substances useful as water reducing and superplasticizer additives for cement compositions are formed by in situ polymerization of one or more ethylenically unsaturated acid monomers such as acrylic acid or maleic anhydride in a reaction medium comprising a polyether such as polypropylene glycol or a copolymer of ethylene oxide and propylene oxide to form a carboxylic acid polymer, followed by reaction of the polyether and carboxylic acid polymer. The composition and properties of the resulting additives may be readily varied as desired through the use of different acid monomers, polyethers, reaction conditions, reagent proportions and the like.
摘要翻译： 用作水泥组合物的减水剂和超增塑剂添加剂的物质通过一种或多种烯属不饱和酸单体如丙烯酸或马来酸酐在包含聚醚如聚丙二醇或环氧乙烷和 环氧丙烷以形成羧酸聚合物，随后聚醚和羧酸聚合物反应。 通过使用不同的酸单体，聚醚，反应条件，试剂比例等，所得添加剂的组成和性质可根据需要容易地变化。
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