Curing agent for the production of low gloss powder coatings based on
epoxy resins
    3.
    发明授权
    Curing agent for the production of low gloss powder coatings based on epoxy resins 失效
    基于环氧树脂生产低光泽粉末涂料的固化剂

    公开(公告)号:US5206332A

    公开(公告)日:1993-04-27

    申请号:US813397

    申请日:1991-12-27

    CPC分类号: C09D163/00 C08G59/5053

    摘要: A curing agent for the production of low gloss powder coatings based on epoxy resins consists essentially of a mixture of the components a) 2-imidazoline derivative having a melting point of >60.degree. C. and b) cyanuric acid as well as, if desired, anticaking agents or/and stabilizers. The low gloss powder coatings produced with these curing agents have the desired low degrees of gloss and good adhesive strengths, they form smooth and uniform surfaces and show no signs of yellowing even after long stoving times.

    摘要翻译: 用于生产基于环氧树脂的低光泽粉末涂料的固化剂基本上由以下组分组成:a)熔点> 60℃的组分a)2-咪唑啉衍生物和b)三聚氰酸,以及如果需要 ,抗结块剂或/和稳定剂。 用这些固化剂生产的低光泽粉末涂料具有所需的低光泽度和良好的粘合强度,它们形成光滑均匀的表面,即使在长时间的烘烤时间后也不显示黄化迹象。

    Method for the Selective Catalytic Reduction of Nitrogen Oxides in Exhaust Gases of Vehicles
    4.
    发明申请
    Method for the Selective Catalytic Reduction of Nitrogen Oxides in Exhaust Gases of Vehicles 有权
    选择性催化还原车辆尾气中氮氧化物的方法

    公开(公告)号:US20100047144A1

    公开(公告)日:2010-02-25

    申请号:US12448492

    申请日:2007-12-20

    IPC分类号: B01D53/94

    摘要: The invention relates to a method for the selective catalytic reduction of nitrogen oxides using ammonia in exhaust gases of vehicles, whereby solutions of guanidine salts with an ammonia forming potential of between 40 and 850 g/kg, optionally in combination with urea and/or ammonia and/or ammonium salts, are catalytically decomposed in the presence of catalytically active, non-oxidation-active coatings of oxides selected from the group containing titanium dioxide, aluminum oxide, silicon dioxide or the mixtures thereof, and hydrothermally stable zeolites which are fully or partially metal-exchanged. The guanidine salts according to the invention enable a reduction of the nitrogen oxides by approximately 90%. Furthermore, said guanidine salts can enable an increase in the ammonia forming potential from 0.2 kg, corresponding to prior art, up to 0.4 kg ammonia per litre of guanidine salt, along with freezing resistance (freezing point below −25° C.). The risk of corrosion of the guanidine salt solutions used according to the invention is also significantly reduced compared to that of solutions containing ammonium formiate.

    摘要翻译: 本发明涉及一种用于在车辆排气中使用氨选择性催化还原氮氧化物的方法,其中胍盐与氨形成电位在40至850g / kg之间的溶液,任选与尿素和/或氨组合 和/或铵盐在催化活性的非氧化活性涂层的存在下催化分解,所述氧化物选自二氧化钛,氧化铝,二氧化硅或其混合物,以及水热稳定的沸石,其完全或 部分金属交换。 根据本发明的胍盐使氮氧化物能够还原约90%。 此外,所述胍盐可以使氨形成潜能值从对应于现有技术的0.2kg增加到每升胍盐高达0.4kg氨,以及抗冻性(凝固点低于-25℃)。 与含有甲酸铵的溶液相比,根据本发明使用的胍盐溶液的腐蚀风险也显着降低。

    Method for producing n-(phosphonomethyl) glycine
    5.
    发明授权
    Method for producing n-(phosphonomethyl) glycine 有权
    制备n-(膦酰基甲基)甘氨酸的方法

    公开(公告)号:US06730813B2

    公开(公告)日:2004-05-04

    申请号:US10204037

    申请日:2002-08-16

    IPC分类号: C07F930

    CPC分类号: C07F9/3813

    摘要: The invention relates to a method for producing N-(phosphonomethyl)glycine involving the following steps: (a) oxidizing N-(phosphonomethyl)iminodiacetic acid (PMIDA) with peroxides or oxygen in an aqueous medium and in the presence of a heterogeneous catalyst at a temperature ranging from 50 to 150° C.; (b) subsequently separating the solid catalyst out of the aqueous reaction suspension of step (a); (c) concentrating the clear reaction solution from step (b), especially by evaporation, and; (d) separating the N-(phosphonomethyl)glycine out of the concentrated reaction solution from step (c), especially by filtration. According to the invention, the aqueous reaction solution from step (d) (mother liquor) is returned with small amounts of N-(phosphonomethyl)glycine and byproducts to step (b) (catalyst separation) and/or to step (c) (concentration). This results in distinctly increasing the yield with a constant product purity and in noticeably reducing the amount of mother liquor.

    摘要翻译: 本发明涉及一种生产N-(膦酰基甲基)甘氨酸的方法,包括以下步骤:(a)在水性介质中和在多相催化剂存在下,用过氧化物或氧气氧化N-(膦酰基甲基)亚氨基二乙酸(PMIDA) 温度范围为50至150℃; (b)随后将固体催化剂从步骤(a)的水性反应悬浮液中分离出来; (c)浓缩步骤(b)的澄清反应溶液,特别是通过蒸发浓缩; (d)从步骤(c)的浓缩反应溶液中分离出N-(膦酰基甲基)甘氨酸,特别是通过过滤。 根据本发明,将步骤(d)的反应液(母液)与少量N-(膦酰基甲基)甘氨酸和副产物返回到步骤(b)(催化剂分离)和/或步骤(c)( 浓度)。 这导致以恒定的产物纯度显着提高产率,并显着降低母液的量。

    Method for the selective catalytic reduction of nitrogen oxides in exhaust gases of vehicles
    6.
    发明授权
    Method for the selective catalytic reduction of nitrogen oxides in exhaust gases of vehicles 有权
    选择性催化还原车辆废气中氮氧化物的方法

    公开(公告)号:US08048390B2

    公开(公告)日:2011-11-01

    申请号:US12448492

    申请日:2007-12-20

    IPC分类号: B01D11/00 B01D53/56 C01C1/02

    摘要: The invention relates to a method for the selective catalytic reduction of nitrogen oxides using ammonia in exhaust gases of vehicles, whereby solutions of guanidine salts with an ammonia forming potential of between 40 and 850 g/kg, optionally in combination with urea and/or ammonia and/or ammonium salts, are catalytically decomposed in the presence of catalytically active, non-oxidation-active coatings of oxides selected from the group containing titanium dioxide, aluminum oxide, silicon dioxide or the mixtures thereof, and hydrothermally stable zeolites which are fully or partially metal-exchanged. The guanidine salts according to the invention enable a reduction of the nitrogen oxides by approximately 90%. Furthermore, said guanidine salts can enable an increase in the ammonia forming potential from 0.2 kg, corresponding to prior art, up to 0.4 kg ammonia per litre of guanidine salt, along with freezing resistance (freezing point below −25° C.). The risk of corrosion of the guanidine salt solutions used according to the invention is also significantly reduced compared to that of solutions containing ammonium formiate.

    摘要翻译: 本发明涉及一种用于在车辆排气中使用氨选择性催化还原氮氧化物的方法,其中胍盐与氨形成电位在40至850g / kg之间的溶液,任选与尿素和/或氨组合 和/或铵盐在催化活性的非氧化活性涂层的存在下催化分解,所述氧化物选自二氧化钛,氧化铝,二氧化硅或其混合物,以及水热稳定的沸石,其完全或 部分金属交换。 根据本发明的胍盐使氮氧化物能够还原约90%。 此外,所述胍盐可以使氨形成潜能值从对应于现有技术的0.2kg增加到每升胍盐高达0.4kg氨,以及抗冻性(凝固点低于-25℃)。 与含有甲酸铵的溶液相比,根据本发明使用的胍盐溶液的腐蚀风险也显着降低。

    Additive for heat-hardenable epoxide resin masses
    8.
    发明授权
    Additive for heat-hardenable epoxide resin masses 失效
    热可硬化环氧树脂块的添加剂

    公开(公告)号:US5001212A

    公开(公告)日:1991-03-19

    申请号:US371449

    申请日:1989-06-27

    IPC分类号: C08G59/40 C08G59/50 C08G59/68

    CPC分类号: C08G59/5093 C08G59/686

    摘要: The present invention provides an additive for heat-hardenable epoxide resin masses, wherein the additive contains or consists of adducts and/or reaction products of (a) imidazoles of the general formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which can be the same or different, are hydrogen atoms, alkyl, alkenyl or alkynyl radicals containing up to 3 carbon atoms or phenyl radicals, said radicals being unsubstituted or substituted, and (b) at least one aromatic hydroxy acid.The additives according to the present invention can be used alone as hardeners or, in combination with other latent hardeners, as accelerators.

    摘要翻译: 本发明提供了一种用于热可硬化环氧树脂块的添加剂,其中添加剂含有(a)通式为(I)的咪唑的加合物和/或反应产物,其中R1,R2,R3 和可以相同或不同的R 4是氢原子,含有至多3个碳原子的烷基,烯基或炔基或苯基,所述基团是未取代的或取代的,和(b)至少一种芳族羟基酸。 根据本发明的添加剂可以单独用作硬化剂或与其它潜在硬化剂组合用作促进剂。

    Method of preparing N-phosphonomethyl glycine
    10.
    发明授权
    Method of preparing N-phosphonomethyl glycine 失效
    制备N-膦酰基甲基甘氨酸的方法

    公开(公告)号:US06121485A

    公开(公告)日:2000-09-19

    申请号:US194953

    申请日:1998-12-07

    IPC分类号: C07F9/38

    CPC分类号: C07F9/3813

    摘要: To prepare N-phosphonomethyl glycine,a) aminomethylphosphonic acid or one of its salts in water, if necessary or desirable with the addition of lyes, is reacted with an alkali carbonate and/or alkali hydrogencarbonate or with carbon dioxide and a lye,b) the resulting alkali salt of N-phosphonomethylcarbamic acid is subsequently hydroxymethylated with formaldehyde,c) the salts, resulting from b), of N-hydroxymethyl-N-phosphonomethyl-carbamic acid, if necessary or desirable with addition of a lye, are reacted with hydrocyanic acid and/or a cyanide andd) the N-carboxy-N-phosphonomethylglyconitrile salts thus obtained are treated with acids and converted by means of hydrolysis and decarboxylation into N-phosphonomethyl glycine.In this way, it is possible to obtain excellent yields of high-purity N-phosphonomethyl glycine.

    摘要翻译: PCT No.PCT / EP97 / 03955 371 1998年12月7日第 102(e)日期1998年12月7日PCT 1997年7月22日PCT公布。 第WO98 / 03517号公报 日期1998年1月29日为了制备N-膦酰基甘氨酸,a)氨基甲基膦酸或其盐中的一种盐,如果需要或需要加入碱液,则与碱金属碳酸盐和/或碱金属碳酸盐或二氧化碳反应, 碱液,b)得到的N-膦酰基甲基氨基甲酸的碱金属盐随后用甲醛羟甲基化,c)由N-羟甲基-N-膦酰基甲基 - 氨基甲酸产生的盐,如果需要或需要,加入 碱液与氢氰酸和/或氰化物反应,d)由此得到的N-羧基-N-膦酰基甲基甘腈盐用酸处理并通过水解和脱羧转化为N-膦酰基甲基甘氨酸。 以这种方式,可以获得高纯度N-膦酰基甲基甘氨酸的良好产率。