-
公开(公告)号：US3917809A
公开(公告)日：1975-11-04
申请号：US76396868
申请日：1968-09-30
CPC分类号： C01B6/04
摘要： Beryllium hydride is prepared by disproportionation of a haloberyllium hydride-Lewis base complex.
摘要翻译： 氢化铍通过卤代氢化物 - 路易斯碱络合物的歧化制备。
-
公开(公告)号：US3846073A
公开(公告)日：1974-11-05
申请号：US13284471
申请日：1971-04-08
CPC分类号： G01N27/223
摘要： 1. A PROCESS FOR DETERMINING THE PROPORTION OF MONOMERS IN A COPOLYMER, WHEREIN THE MONOMERS HAVE DIFFERENT DIELECTRIC CONSTANTS, SAID PROCESS COMPRISING CONTACTING A CAPACITIVE DETECTOR RESPONSIVE TO THE DIELECTRIC CONSTANT OF FLUIDS WITH A FLUID STREAM OF SAID COPOLYMER IN A ZONE OF RELATIVELY CONSTANT TEMPERATURE AND PRESSURE,
MEASURING THE CAPACITANCE OF THE CAPACITIVE DETECTOR WHILE IN CONTACT WITH THE FLUID STREAM AND COMPARING THE VALUE OF THE CAPACITANCE SO MEASURED WITH A PREDETERMINED REFERENCE VALUE.
D R A W I N G-
公开(公告)号：US3764666A
公开(公告)日：1973-10-09
申请号：US3764666D
申请日：1968-08-07
发明人： MURIB J
CPC分类号： C01B6/06
摘要： A process is provided for the preparation of aluminum hydride by the thermal decomposition of tertiary amine-alane adduct in the presence of a Group IA or Group IIA metal hydride or organometallic compound catalyst. The catalyst is preferably a complex metal hydride or organometallic catalyst containing the Group IA or Group IIA metal plus either aluminum or boron.
摘要翻译： 提供了通过在IA族或IIA族金属氢化物或有机金属化合物催化剂的存在下热分解叔胺 - 丙烷加合物制备氢化铝的方法。 催化剂优选为含有IA族或IIA族金属加上铝或硼的复合金属氢化物或有机金属催化剂。
-
公开(公告)号：US3758551A
公开(公告)日：1973-09-11
申请号：US3758551D
申请日：1971-11-10
摘要： Process for the preparation of acrylate or methacrylate esters involving the reaction of propylene or isobutylene with a primary alcohol and molecular oxygen in the vapor phase at temperatures of up to 250* C. and in the presence of a catalyst composition containing phosphoric acid and a catalytically effective amount of palladium metal. The acrylate or methacrylate esters are selectively produced in the single step vapor phase oxidation.
摘要翻译： 制备丙烯酸酯或甲基丙烯酸酯的方法，涉及丙烯或异丁烯与气相中的伯醇和分子氧在高达250℃的温度下和在含有磷酸和催化剂的催化剂组合物存在下反应 有效量的钯金属。 在单步气相氧化中选择性地生产丙烯酸酯或甲基丙烯酸酯。
-
公开(公告)号：US3752873A
公开(公告)日：1973-08-14
申请号：US3752873D
申请日：1971-08-05
发明人： LEWIS D
摘要： HEAT DIFFUSABLE NON-DRYING INKS ARE PRINTED ON PLASTIC CONTAINERS. THE RESIDUAL SURFACE INK IS REMOVED IN AN OVEN ANNEALING PROCESS WHICH IS USED TO CONTROL CONTAINER VOLUME AND DRY THE BOTTLES.
-
公开(公告)号：US3751402A
公开(公告)日：1973-08-07
申请号：US3751402D
申请日：1971-06-01
发明人： BROERING L
摘要： A PROCESS IS PROVIDED FOR THE PREPARATION OF RUBBERY POLYMERS IN SATISFACTORY CRUMB FORM THAT CAN BE READILY HANDLED AND PROCESSED, FROM A POLYMER FORMED IN A REACTION SOLUTION IN AN INERT, VOLATILE, NONAQUEOUS SOLVENT, IN THE PRESENCE OF AN ALKALI METAL CATALYST WHICH HYDROLYZES IN WATER TO FORM AN ALKALINE SOLUTION. THE PROCESS COMPRISES PRECIPITATING THE POLYMER FROM THE REACTION SOLUTION IN THE PRESENCE OF WATER BY SUBJECTING THE POLYMER SOLUTION TO STEAM-STRIPPING TO VOLATILIZE AND REMOVE UNREACTED MONOMER, VOLATILE LOW POLYMER AND SOLVENT IN THE PRESENCE OF AN ANIONOC SURFACTANT AND A NONIONIC SURFACTANT AND THEREAFTER RECOVERING THE RUBBERY POLYMER CRUMB.
-
公开(公告)号：US3743460A
公开(公告)日：1973-07-03
申请号：US3743460D
申请日：1971-08-09
发明人： WOOLRIDGE G
CPC分类号： B29C47/702 , B29C47/0021 , B29C47/065 , B29C47/145 , Y10T137/86751 , Y10T137/87338 , Y10T137/87523 , Y10T137/8766
摘要： An extrusion die for the production of multi-layer flat films of thermoplastic sheet material wherein the die is selectively adjustable to change from a three-layer laminated film to a twolayer laminated film and, where a two-layer film is being extruded, to reverse the arrangement of the layers.
摘要翻译： 一种用于生产热塑性片材的多层扁平薄膜的挤出模具，其中模具可选择性地调节以从三层层压薄膜转变为双层层压薄膜，并且当挤出两层薄膜时， 以反转层的排列。
-
公开(公告)号：US3739020A
公开(公告)日：1973-06-12
申请号：US3739020D
申请日：1969-05-13
发明人： MC CLAIN D , MADOR I
IPC分类号： B01J23/00 , C07B61/00 , C07C51/00 , C07C51/235 , C07C53/00 , C07C53/08 , C07C67/00 , C07C51/26
CPC分类号： C07C51/235 , C07C53/122 , C07C53/08
摘要： A VAPOR PHASE PROCESS FOR THE PREPARATION OF CARBOXYLIC ACIDS BY THE DIRECT OXIDATION OF LOWER ALKANOLS. IN ACCORDANCE WITH ONE EMBODIMENT, THE PROCESS COMPRISES REACTING ETHYL ALCOHOL, IN VAPOR FORM, WITH AN OXYGENCONTAINING GAS AS THE PRESENCE OF A SOLID PALLADIUM METALCONTAINING CATALYST. PREFERRED REACTION CONDITIONS INCLUDE A TEMPERATURE OF 130* C. OR LESS AND ATMOSPHERIC OR SLIGHTLY ELEVATED PRESSURE. THE REACTION IS CARRIED OUT IN THE ABSENCE OF AN ALKALINE MATERIAL.
-
公开(公告)号：US3700367A
公开(公告)日：1972-10-24
申请号：US3700367D
申请日：1971-03-17
发明人： QUACKENBUSH JOHN J
摘要： In order to cause the opposing panel ends of a plastic bag to curl outwardly, the bags are captured between moving belts with a portion of their upper surfaces extending above the belts. The outer surfaces of the bag panels are heated, and the panel edges are forced to flare open by passing through a stiff wire. The interior surfaces of the open panel lips are then rapidly cooled to introduce a permanent tendency for the bag panels at the bag opening to curl away from one another.
摘要翻译： 为了使塑料袋的相对的面板端部向外卷曲，袋子被捕获在移动带之间，并且其上表面的一部分在皮带上方延伸。 袋面板的外表面被加热，并且通过穿过刚性线将板边缘强制打开。 然后开放的面板唇缘的内表面被快速冷却以引起袋子在袋子开口处彼此卷曲的永久趋势。
-
公开(公告)号：US3677477A
公开(公告)日：1972-07-18
申请号：US3677477D
申请日：1970-06-01
发明人： WATSON LLOYD M , BIRCHALL WILLIAM R
CPC分类号： B22F9/06 , B01F13/1027
摘要： Apparatus for preparing dispersions of finely divided alkali metal substantially uniform in alkali metal concentration and having a narrow particle size below a predetermined median, said apparatus comprising a mixing tank divided by a vertically disposed baffle into a mixing zone and a substantially smaller quiescent, settling zone. Molten sodium feed and a dispersing aid mixture is agitated within said mixing zone in an inert gas blanket and alkali metal particles gravitate through the settling zone to the bottom of the mixing tank at which point the mixture containing said particles is drawn off in a continuous operation and passed to an homogenizer providing a high shear dispersion zone wherein the metallic particles are reduced in size and the mixture is returned to the mixing tank. Through repeated recirculation, such metallic particles as become reduced in size to the predetermined median size desired rise to the top of the quiescent, settling zone at which point the desired uniform dispersion containing only fine metallic particles within a closely controlled range is withdrawn.
摘要翻译： 用于制备碱金属浓度基本上均匀且具有低于预定中值的窄粒径的细分碱金属的分散体的装置，所述装置包括由垂直设置的挡板分成混合区和基本上较小的静止沉降区的混合槽 。 熔融钠原料和分散助剂混合物在惰性气体保护层内在所述混合区内搅动，碱金属颗粒通过沉降区引入混合罐的底部，此时将含有所述颗粒的混合物在连续操作中抽出 并送到提供高剪切分散区的均化器，其中金属颗粒的尺寸减小，混合物返回到混合槽中。 通过反复再循环，将所需的尺寸减小到预定中值的金属颗粒上升到静止沉降区的顶部，此时仅在精细控制范围内仅含有精细金属颗粒的均匀分散体被取出。
-
-
-
-
-
-
-
-
-
搜索结果
673 条记录 (耗时 0.019 秒)