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    • 1. 发明授权
    • Process for the preparation of dialkyl carbonates
    • 制备碳酸二甲酯的方法
    • US5142087A
    • 1992-08-25
    • US564324
    • 1990-08-08
    • Klaus JoergFranz-Josef MuellerWolfgang HarderRudolf Kummer
    • Klaus JoergFranz-Josef MuellerWolfgang HarderRudolf Kummer
    • B01J27/122B01J31/02C07B61/00C07C68/00C07C69/96
    • C07C68/005
    • A process for the continuous synthesis of dialkyl carbonates of the general formula I ##STR1## in which R denotes C.sub.1 -C.sub.4 -alkyl, by reaction of C.sub.1 -C.sub.4 -alkanols with carbon monoxide and oxygen at elevated temperature and pressure and in the presence of a copper-containing catalyst dissolved or suspended in the reaction medium, whereina) a gas stream containing carbon monoxide and oxygen is bubbled through the alkanol/catalyst mixture present in the reactor at a rate of from 1 to 100 liters per hours per gram of copper present in the reactor, part of which gas stream reacts with the alkanol to form dialkyl carbonate and water, which components are continuously entrained, together with alkanol, as a gaseous mixture, from the reaction mixture by means of the remaining, unreacted portion of the carbon monoxide/oxygen gas stream, whereuponb) the resulting gaseous mixture is separated, in a separator, into gaseous and liquid phases, the gaseous phase being recycled to the reactor if desired, andc) the liquid phase, which essentially consists of dialkyl carbonate, water and alkanol, is separated into its components, the dialkyl carbonate being isolated and the alkanol, if desired, recycled to the reactor, andd) the liquid in the reactor is replenished by adding fresh or recycled alkanol at the rate at which the alkanol is consumed and discharged.
    • 通过在升高的温度和压力下将C1-C4-链烷醇与一氧化碳和氧气反应,连续合成通式I的二烷基碳酸酯的方法,其中R表示C 1 -C 4 - 烷基, 溶解或悬浮在反应介质中的含铜催化剂的存在,其中a)含有一氧化碳和氧气的气流以1至100升/小时的速率通过反应器中存在的链烷醇/催化剂混合物 存在于反应器中的每克铜,其中一部分气流与链烷醇反应以形成碳酸二烷基酯和水,该组分与来自反应混合物的烷醇作为气态混合物一起通过剩余的, 一氧化碳/氧气流的未反应部分,然后b)将所得气体混合物在分离器中分离成气相和液相,如果需要,将气相再循环至反应器 ,和c)基本上由碳酸二烷基酯,水和链烷醇组成的液相被分离成其组分,分离出碳酸二烷基酯,如果需要,链烷醇再循环到反应器中,和d)反应器中的液体 通过以消耗和排出链烷醇的速率加入新鲜或回收的链烷醇来补充。
    • 4. 发明授权
    • Light-sensitive photopolymerizable and diazonium salt polycondensation
product containing composition and recording material including a
mixture of binders
    • 包含组合物和记录材料的光敏光聚合和二盐酸盐聚合产物,包括粘合剂混合物
    • US5143813A
    • 1992-09-01
    • US473402
    • 1990-02-01
    • Klaus Joerg
    • Klaus Joerg
    • G03F7/016C08F2/44C08F2/50G03F7/00G03F7/027G03F7/028G03F7/032G03F7/095
    • G03F7/0955
    • A light-sensitive mixture is described which contains a diazonium salt polycondensation product, a free-radical polymerizable compound having at least one terminal ethylenically unsaturated group and a boiling point at atmospheric pressure above 100.degree. C., a polymerization initiator which forms free radicals under the action of actinic radiation, and, as a first binder, a water-insoluble reaction product which is soluble in organic solvents and in aqueous alkaline solutions, which is a reaction product of an intramolecular anhydride of an organic polycarboxylic acid with a hydroxyl-containing synthetic polymer, and which has no further functional groups capable of reacting with acid anhydrides, and, as a further binder, an acid organic polymer having an acid number above 70, preferably a (meth)acrylic acid copolymer. The mixture is useful for producing planographic printing plates which give long print runs, and is notable for a long shelf life at elevated temperature.
    • 描述了一种感光混合物,其包含重氮盐缩聚产物,具有至少一个末端烯键式不饱和基团的沸点和大气压在100℃以上的沸点的自由基可聚合化合物,在大气压以下形成自由基的聚合引发剂 光化辐射的作用,作为第一粘合剂,可溶于有机溶剂和碱性水溶液的水不溶性反应产物,其为有机多元羧酸的分子内酸酐与含羟基的反应产物 合成聚合物,并且不具有能够与酸酐反应的其它官能团,作为另外的粘合剂,酸值为70以上的酸性有机聚合物,优选为(甲基)丙烯酸共聚物。 该混合物可用于生产平版印刷版,其具有长的印刷运行,并且在升高的温度下长期保质期是显着的。
    • 6. 发明授权
    • Developer concentrate and developer prepared therefrom for exposed
negative-working reproduction layers with top layer and a process for
producing printing forms
    • 用于暴露的负面工作复制层的开发者集中和开发者与顶层和生产印刷形式的过程
    • US5155011A
    • 1992-10-13
    • US613000
    • 1990-11-15
    • Rudolf ZertaniKlaus Joerg
    • Rudolf ZertaniKlaus Joerg
    • G03F7/00G03F7/32
    • G03F7/322
    • A developer concentrate is described which is used by diluting with tap water to give a read-to-use developer for negative-working exposed reproduction layers on a base. The developer concentrate is a mixture which includes water, an organic solvent, an alkali agent, an anionic surfactant, an n-alkanoic acid and/or its salts, an emulsifier, an alkali-metal salt of an oligomeric phosphate and/or of N-(2-hydroxyethyl)ethylenediaminetriacetic acid as complexing agent and also a tris(hydroxyalkyl) aminomethane as buffering substance. The developer concentrate according to the present invention exhibits, in particular, the advantage that it is stable as a concentrate, i.e., exhibits no phase separations, precipitates or turbidities, etc. . . . , and can be diluted without difficulties to produce the ready-to-use developer. The latter is also stable and exhibits optimum developer properties, in particular for reproduction layers with overcoat.
    • 描述了一种显影剂浓缩物,其通过用自来水稀释而使用,以便在基底上为负面曝光的再现层提供一个可读使用的显影剂。 显影剂浓缩物是包括水,有机溶剂,碱剂,阴离子表面活性剂,正链烷酸和/或其盐的混合物,乳化剂,低聚磷酸盐和/或N的碱金属盐 - (2-羟乙基)乙二胺三乙酸作为络合剂,还有三(羟烷基)氨基甲烷作为缓冲物质。 根据本发明的显影剂浓缩物特别表现出作为浓缩物稳定的优点,即不显示相分离,沉淀或混浊等。 。 。 ,并且可以无困难地稀释以生产即用型显影剂。 后者也是稳定的并且显示出最佳的显影剂性质,特别是对于具有外涂层的再生层。
    • 9. 发明授权
    • Radiation-sensitive recording material with a positive-working,
radiation-sensitive layer having a rough surface containing a
surfactant having polysiloxane units
    • 具有正性辐射敏感层的辐射敏感记录材料,其具有包含具有聚硅氧烷单元的表面活性剂的粗糙表面
    • US5378584A
    • 1995-01-03
    • US924750
    • 1992-08-04
    • Hans W. FrassErnst-August HackmannKlaus JoergDietmar KoennekeRudolf NeubauerAndreas Elsaesser
    • Hans W. FrassErnst-August HackmannKlaus JoergDietmar KoennekeRudolf NeubauerAndreas Elsaesser
    • G03F7/00G03F7/004G03F7/022G03F7/115G03F7/023G03F7/30
    • G03F7/004G03F7/0226G03F7/115
    • A radiation-sensitive recording material, in particular for producing planographic printing plates, is disclosed. The material is composed of a layer support and a positive-working, radiation-sensitive layer having a rough surface containing at least one 1,2-quinonediazide as a radiation-sensitive compound, a polycondensate or polymer as a binder insoluble in water and soluble or swellable in aqueous-alkaline solutions, a dye and a filler. At a layer weight of 3 g/m.sup.2 or less, the radiation-sensitive layer comprises a silicic acid product having a mean grain size in the range from 3 to 5 .mu.m with an exclusion limit of 15 .mu.m as a filler in such a quantity that it exhibits a Bekk smoothness in the range from 20 to 100 seconds (determined according to DIN 53 107, Method A). The layer additionally comprises a surfactant having polysiloxane units. The recording material shows good copying properties and technical printing properties, such as an advantageous evacuation time, screen evenness, low susceptibility to air occlusions, good resolving power and a good coating structure. The invention also relates to a process for producing a planographic printing plated, using the recording material according to the invention.
    • 公开了一种辐射敏感记录材料,特别是用于生产平版印刷版的材料。 该材料由具有粗糙表面的层载体和正性辐射敏感层组成,其具有至少一种作为辐射敏感性化合物的1,2-醌二叠氮化物,作为不溶于水和可溶性的粘合剂的缩聚物或聚合物 或在水性碱性溶液中溶胀,染料和填料。 在3g / m 2以下的层重量下,辐射敏感层包含平均粒度在3〜5μm的硅酸产品,排阻极限为15μm作为填料, 其表现为Bekk平滑度在20至100秒的范围内(根据DIN 53 107,方法A确定)。 该层还包含具有聚硅氧烷单元的表面活性剂。 记录材料具有良好的复印性能和技术打印性能,例如有利的抽真空时间,屏幕均匀性,对空气阻塞的低敏感性,良好的分辨能力和良好的涂层结构。 本发明还涉及使用根据本发明的记录材料来生产平版印刷电镀的方法。
    • 10. 发明授权
    • Method and apparatus for roughening a support for radiation-sensitive coatings
    • 粗糙化用于辐射敏感涂层的载体的方法和装置
    • US06261438B1
    • 2001-07-17
    • US09466928
    • 1999-12-20
    • Georg HabyGünter HultzschKlaus JoergUwe GartmannJörg KadenHermann Idstein
    • Georg HabyGünter HultzschKlaus JoergUwe GartmannJörg KadenHermann Idstein
    • C25F300
    • B41N3/034B41N3/03
    • A method and apparatus for electrochemically roughening a support is disclosed to minimize the occurrence of surface discharges or electrical discharges on the support. A DC voltage acts on the support at the start of the movement of the support through the electrolyte bath. Subsequently, a three-phase or single-phase current acts on the support in the roughening zone. Three-phase electrodes are arranged in the electrolyte bath and are connected to the secondary of a three-phase transformer. The primary of the three-phase transformer is connected, via control transformers to a three-phase power transformer. A DC electrode is located upstream of the three-phase electrodes in the direction in which the support is transported through the bath. The DC electrode may be connected to the positive pole of a DC source while the negative pole of this DC source makes contact with the support.
    • 公开了一种用于电化学粗糙化载体的方法和装置,以最小化载体上的表面放电或放电的发生。 在载体通过电解质浴的移动开始时,DC电压作用在支撑体上。 随后,三相或单相电流作用在粗糙化区的支撑体上。 三相电极布置在电解槽中,并连接到三相变压器的次级。 三相变压器的主要通过控制变压器连接到三相电力变压器。 直流电极位于三相电极的上游,支撑体通过电镀槽的方向移动。 DC电极可以连接到直流电源的正极,而该直流电源的负极与支撑件接触。