-
公开(公告)号：US06541673B1
公开(公告)日：2003-04-01
申请号：US09997887
申请日：2001-11-30
IPC分类号： C07C4103
CPC分类号： C08G65/2696 , C07C41/03 , C08G65/2627 , C08G65/2663 , C08G2650/34 , C07C43/23
摘要： Phenolic polyether polyols are prepared by a two stage oxyalkylation process, a first stage performed at a high oxyalkylation temperature and a second stage at a lower oxyalkylation temperature. Despite the use of high temperature during oxyalkylation, polydispersity is substantially unaffected, while process time is drastically reduced.
摘要翻译： 酚醛聚醚多元醇通过两阶段烷氧基化方法制备，第一阶段在高烷氧基化温度下进行，第二阶段在较低的烷氧基化温度下进行。 尽管在烷氧基化期间使用高温，但多分散性基本上不受影响，而处理时间急剧降低。
-
公开(公告)号：US06245877B1
公开(公告)日：2001-06-12
申请号：US09558913
申请日：2000-04-26
IPC分类号： C08G1848
CPC分类号： C09D175/08 , C08G18/12 , C08G18/4879 , C08G18/307
摘要： A moisture-cure urethane composition is disclosed. The urethane is formulated from an NCO-terminated alkoxylated phenolic resin that has long oxyalkylene chains. It has greater than 70 wt % solids and has excellent resistance to acids, bases, and chemicals.
摘要翻译： 公开了一种湿固化的聚氨酯组合物。 氨基甲酸酯由具有长氧化烯链的NCO封端的烷氧基化酚醛树脂制成。 它具有大于70重量％的固体，并具有优异的抗酸，碱和化学物质。
-
公开(公告)号：US5581000A
公开(公告)日：1996-12-03
申请号：US458524
申请日：1995-06-02
IPC分类号： C01B15/023 , C07C303/32 , C07C309/43 , C07C309/44 , C07D301/12 , C09B1/30 , C07C15/28
CPC分类号： C07C309/44 , C01B15/023 , C07C303/32 , C07C309/43 , C07D301/12 , C07C2103/24
摘要： Hydrogen peroxide is produced by oxidizing alkylammonium salts of sulfonic acid-substituted anthrahydroquinones. As said salts are highly soluble in protic polar solvents such as water and lower aliphatic alcohols, the concentration of hydrogen peroxide in the reaction product thereby obtained may be advantageously high. The anthraquinone salt co-product generated by such oxidation may be readily converted in high yield back to the starting anthrahydroquinone salt by hydrogenation.
摘要翻译： 通过氧化磺酸取代的蒽醌的烷基铵盐生产过氧化氢。 由于所述盐高度溶于质子极性溶剂如水和低级脂族醇，所以由此得到的反应产物中过氧化氢的浓度可能有利地高。 通过这种氧化产生的蒽醌盐共同产物可以容易地通过氢化以高产率转化回起始的氢醌。
-
公开(公告)号：US5540906A
公开(公告)日：1996-07-30
申请号：US313969
申请日：1994-09-28
IPC分类号： C01B15/023 , C07C303/32 , C07C309/43 , C07C309/44 , C07D301/12
CPC分类号： C07C309/44 , C01B15/023 , C07C303/32 , C07C309/43 , C07D301/12 , C07C2103/24
摘要： Hydrogen peroxide is produced by oxidizing alkylammonium salts of sulfonic acid-substituted anthrahydroquinones. As said salts are highly soluble in protic polar solvents such as water and lower aliphatic alcohols, the concentration of hydrogen peroxide in the reaction product thereby obtained may be advantageously high. The anthraquinone salt co-product generated by such oxidation may be readily converted in high yield back to the starting anthrahydroquinone salt by hydrogenation.
摘要翻译： 通过氧化磺酸取代的蒽醌的烷基铵盐生产过氧化氢。 由于所述盐高度溶于质子极性溶剂如水和低级脂族醇，所以由此得到的反应产物中过氧化氢的浓度可能有利地高。 通过这种氧化产生的蒽醌盐共同产物可以容易地通过氢化以高产率转化回起始的氢醌。
-
5.发明授权
公开(公告)号：US5220061A
公开(公告)日：1993-06-15
申请号：US963167
申请日：1992-10-19
IPC分类号： C07C263/04 , C07C269/06 , C07C273/18
CPC分类号： C07C273/1854
摘要： A selective process for the preparation of diphenylmethane bis(dialkylureas) is disclosed. An alkyl phenylcarbamate or an N,N-dialkyl-N'-phenylurea is reacted with a methylene bis(alkyl carbamate) in the presence of an acid catalyst. The use of a staged addition of phenylcarbamate or phenylurea to the methylene bis(carbamate) and the use of a ramped temperature program are the keys to good selectivity to MDI dimer products.
摘要翻译： 公开了制备二苯基甲烷双（二烷基脲）的选择性方法。 在酸催化剂存在下，将烷基苯基氨基甲酸酯或N，N-二烷基-N'-苯基脲与亚甲基双（烷基氨基甲酸酯）反应。 使用分段加成苯基氨基甲酸酯或苯脲至亚甲基双（氨基甲酸酯）和使用斜坡温度程序是对MDI二聚体产物具有良好选择性的关键。
-
公开(公告)号：US5463090A
公开(公告)日：1995-10-31
申请号：US330057
申请日：1994-10-27
IPC分类号： C07D301/12 , C07D301/19 , C07D303/04
CPC分类号： C07D301/19 , C07D301/12 , C07D301/14 , Y02P20/125 , Y02P20/584
摘要： Epoxides are produced by an integrated process involving molecular oxygen oxidation of an alkylammonium salt of a sulfonic acid-substituted anthrahydroquinone, epoxidation of an ethylenically unsaturated substrate using the hydrogen peroxide-containing product obtained by such oxidation in the presence of a titanium silicalite catalyst, and regeneration of the anthrahydroquinone by hydrogenation of the anthraquinone co-product. Oxidation and epoxidation may be performed concurrently. The alkylammonium salts have the advantage of being highly soluble in polar protic media such as water and lower alcohols.
摘要翻译： 环氧化物是通过涉及磺酸取代的蒽醌的烷基铵盐的分子氧氧化，烯属不饱和基质的环氧化的综合方法，使用在钛硅沸石催化剂存在下通过这种氧化获得的含有过氧化氢的产物，以及 通过蒽醌共同产物的氢化再生蒽醌。 氧化和环氧化可以同时进行。 烷基铵盐具有高度可溶于极性质子介质如水和低级醇的优点。
-
7.发明授权Selective process for the preparation of diphenylmethane diisocyanate precursors 失效制备二苯基甲烷二异氰酸酯前体的选择性方法
公开(公告)号：US5206412A
公开(公告)日：1993-04-27
申请号：US832251
申请日：1992-02-07
IPC分类号： C07C263/04 , C07C269/06 , C07C273/18
CPC分类号： C07C269/06
摘要： A selective process for the preparation of diphenylmethane diisocyanate precursors is disclosed. An alkyl phenylcarbamate or an N,N-dialkyl-N'-phenylurea is reacted with a methylene bis(alkyl carbamate) in the presence of an acid catalyst. The use of a staged addition of phenylcarbamate or phenylurea to the methylene bis(carbamate) and the use of a ramped temperature program are the keys to good selectivity to MDI dimer products.
摘要翻译： 公开了制备二苯基甲烷二异氰酸酯前体的选择性方法。 在酸催化剂存在下，将烷基苯基氨基甲酸酯或N，N-二烷基-N'-苯基脲与亚甲基双（烷基氨基甲酸酯）反应。 使用分段加成苯基氨基甲酸酯或苯脲至亚甲基双（氨基甲酸酯）和使用斜坡温度程序是对MDI二聚体产物具有良好选择性的关键。
-
公开(公告)号：US06350811B1
公开(公告)日：2002-02-26
申请号：US09489064
申请日：2000-01-21
IPC分类号： C08J300
CPC分类号： C09D175/04 , C08G18/0823 , C08G18/12 , C08G18/542 , C08G18/3228
摘要： A water-dispersible polyurethane resin is disclosed. The resin comprises recurring units of an alkoxylated phenolic resin, a carboxylate-containing diol, and a multifunctional isocyanate. The resin, which can be neutralized, and/or chain-extended, is dispersed in water to form a polyurethane dispersion. Coatings derived from the polyurethane dispersions have excellent acid and chemical resistance.
摘要翻译： 公开了一种水分散性聚氨酯树脂。 树脂包含烷氧基化酚醛树脂，含羧酸酯的二醇和多官能异氰酸酯的重复单元。 可以中和和/或链延长的树脂分散在水中以形成聚氨酯分散体。 衍生自聚氨酯分散体的涂料具有优异的耐酸和耐化学性。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.014 秒)
