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公开(公告)号：US3865772A
公开(公告)日：1975-02-11
申请号：US42211573
申请日：1973-12-05
申请人： DART IND INC
摘要： A two-step process involving bulk polymerization of a mixture of hydrophobic and hydrophilic monomers followed by emulsion polymerization conveniently yields a stable copolymer latex composition having improved properties. The process is particularly useful for preparing carboxylated styrene-butadiene latex compositions.
摘要翻译： 涉及疏水和亲水单体的混合物的本体聚合，随后进行乳液聚合的两步法可方便地得到具有改进性能的稳定的共聚物胶乳组合物。 该方法对于制备羧化苯乙烯 - 丁二烯胶乳组合物特别有用。
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公开(公告)号：US3856498A
公开(公告)日：1974-12-24
申请号：US23245572
申请日：1972-03-07
申请人： DART IND INC
发明人： CAMPAGNA E , HARDY D , LETAWA J , PALMER T , DAUGHERTY B
CPC分类号： B05C19/02 , B05D1/24 , B05D3/0218 , B05D3/0254 , B05D3/08 , B65G47/28 , B65G2201/0244 , B65G2207/14 , Y10S118/05
摘要： Glassware coating process and apparatus including an oven and fluidized bed arrangement that preheats, dip coats and cures a thermoplastic shatterproof polymer on ware in a continuous fashion. The apparatus, among other things, includes a gripper device adapted to seize a plurality of ware simultaneously and transfer same through the coating stage. Similarly, there are disclosed techniques and apparatus for pre-heating, curing, applying variable coating thicknesses and transferring and lubricating coated ware.
摘要翻译： 包括烘箱和流化床装置的玻璃器皿涂覆工艺和设备，其以连续的方式预热，浸涂并固化在器皿上的热塑性防碎聚合物。 该装置尤其包括一个夹持器装置，适于同时抓住多个器具并将其传送通过涂覆阶段。 类似地，公开了用于预热，固化，施加可变涂层厚度和转移和润滑涂层制品的技术和装置。
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公开(公告)号：US3822949A
公开(公告)日：1974-07-09
申请号：US6031870
申请日：1970-08-03
申请人： DART IND INC
发明人： DICK F
CPC分类号： B43K7/08
摘要： A pen plug particularly useful in ballpoint pens as a stopper to prevent back leakage of ink from the ink reservoir of such pens and yet function to allow passage of air into the pen interior. Such plugs include a plurality of substantially continuous synthetic filaments such as cellulose acetate, natural fibrous threads and synthetic filaments or mixtures of differing synthetic filaments encased in a plastic sheath.
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公开(公告)号：US3820692A
公开(公告)日：1974-06-28
申请号：US35169773
申请日：1973-04-16
申请人： DART IND INC
CPC分类号： B65D47/0895 , A47J43/27
摘要： A food storage receptacle or vessel and blender having an overall shape or configuration that is functional to direct fluid flow patterns therein and effect maximum mixing characteristics thereby. In addition to the noted container configuration there is also included therein a removable blending element also of a prescribed configuration that further maximizes fluid mixing action as the receptacle is shaken in use.
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公开(公告)号：US3799493A
公开(公告)日：1974-03-26
申请号：US87759769
申请日：1969-11-24
申请人： DART IND INC
CPC分类号： B65D43/0212 , A47J43/20 , B65D2543/00296 , B65D2543/00407 , B65D2543/00527 , B65D2543/00537 , B65D2543/0062 , B65D2543/00685 , B65D2543/0074 , B65D2543/00796
摘要： An individual serving sized plastic salad mold particularly well adapted for use with gelatin and having a reversible decorative impression forming closure.
摘要翻译： 一种独特的大小的塑料沙拉模具，特别适合与明胶一起使用并具有可逆的装饰性印模成型封闭。
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公开(公告)号：US3756611A
公开(公告)日：1973-09-04
申请号：US3756611D
申请日：1971-07-15
申请人： DART IND INC
发明人： WIKELSKI K , TYSON H
CPC分类号： F16J15/26
摘要： An improved packing retainer cup is provided having an increased operational life span which comprises a retaining ring having first and second radially extending side walls and inner and outer circumferential surfaces, an inner peripheral recess in said first side wall communicating with said inner circumferential surface for receiving a sealing ring, the sealing face of said first side wall extending continuously uninterrupted from the recess to the outer circumferential surface, and an outer peripheral undercut in said second side wall communicating with said outer circumferential surface, the sealing face of the second side wall extending continuously uninterrupted from said inner circumferential surface to said undercut.
摘要翻译： 提供了一种改进的包装保持杯，其具有增加的使用寿命，其包括具有第一和第二径向延伸的侧壁和内外周表面的保持环，所述第一侧壁中的内周凹槽与所述内圆周表面连通以用于接收 密封环，所述第一侧壁的密封面从凹部到外周面连续地不间断地延伸，并且在与所述外周面连通的所述第二侧壁中的外周底切，所述第二侧壁的密封面延伸 从所述内周面到所述底切连续不间断。
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公开(公告)号：US3756479A
公开(公告)日：1973-09-04
申请号：US3756479D
申请日：1972-01-03
申请人： DART IND INC
CPC分类号： G01F11/261 , A47G19/34
摘要： A metering dispenser which will automatically measure a quantity of powdered or granular material and which will permit an immediately effective adjustment in metering volume to be made. The dispenser includes a container, a cup within the container sized to permit passage of material therearound and into the top of the container when such is inverted. The cup is open along its top side so that it collects and retains the material in the top thereof when the container is returned to its upright-position and that material begins its descent responsive to the reversion. When the container is again inverted, the material in the cup flows from the cup through a tube and out of the container. Rotation of the tube causes a varying proportion of the cup to be covered by the tube, thus permitting the volume of material passing through the tube to vary responsive to such rotation.
摘要翻译： 计量分配器，其将自动测量粉末或颗粒状材料的量，并且将允许立即有效地调节计量体积。 分配器包括容器，容器内的杯子，其大小允许当其倒转时允许其周围的材料通过并进入容器的顶部。 杯子沿其顶侧开放，使得当容器返回到其直立位置并且材料响应于回复开始下降时，其将材料收集并保持在其顶部。 当容器再次倒转时，杯中的材料从杯中流过管并离开容器。 管的旋转导致杯的不同比例被管覆盖，从而允许通过管的材料的体积响应于这种旋转而变化。
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公开(公告)号：US3719643A
公开(公告)日：1973-03-06
申请号：US3719643D
申请日：1971-01-25
申请人： DART IND INC
发明人： KNIGHT R
CPC分类号： B01J19/2425 , B01J2219/00006 , B01J2219/00123 , C08F10/00 , C08F4/28
摘要： AN IMPROVEMENT IN A PROCESS FOR POLYMERIZING ETHYLENE IS ACHIEVED BY SPLITTING THE FEED INTO AT LEAST TWO STREAMS, CONTINUOUSLY POLYMERIZING EACH OF THE STREAMS IN THE PRESENCE OF FREE-RADICAL INITIATOR AT ELEVATED PRESSURES AND TEMPERATURES IN SEPARATE REACTOR TUBES, QUENCHING THE RESULTING REACTION PRODUCT STREAM, AND SEPARATING AND RECOVERING POLYETHYLENE FROM THE REACTION PRODUCT STREAM. THE LENGTH OF EACH OF THE REACTOR TUBES IS DESIGNED SO THAT THE REACTION TEMPERATURE PEAK OCCURS WITHIN THE TUBE
ADJACENT TO THE OUTLET AND IS CALCULATED BASED ON THE FOLLOWING EQUATION: L = (VW(TP-TI))/AR(3600) WHERE: $ IS THE SPECIFIC VOLUME IN UNITS OF CUBIC VOLUME OF ETHYLENE FEED PER UNIT OF WEIGHT, W IS THE ETHYLENE FEED RATE THROUGH THE REACTOR TUBE IN UNITS OF WEIGHT PER HOUR, TP IS THE PEAK TEMPERATURE OF THE REACTION, TT IS THE TEMPERATURE OF THE ETHYLENE FEED AT THE INLET OF THE REACTOR TUBE, A IS THE CROSS-SECTIONAL AREA OF THE REACTOR TUBE IN UNITS OF SQUARE LENGTH, R IS THE ETHYLENE REACTION RATE IN UNITS OF TEMPERATURE RISE PER SECOND, 3600 IS THE CONSTANT TO CONVERT SECONDS TO HOURS.-
公开(公告)号：US3714039A
公开(公告)日：1973-01-30
申请号：US3714039D
申请日：1971-04-13
申请人： DART IND INC
发明人： LANCY L , WITTMANN I
CPC分类号： C02F1/66 , C02F2101/18 , C02F2101/22 , Y10S210/918
摘要： A PROCESS FOR TREATING SPILLAGE AND WASTE SOLUTIONS FROM A LINE OF METAL FINISHING PROCESSING SOLUTION TANKS TO PREVENT THE FORMING OF TOXIC HYDROGEN CYANIDE GAS IS PROVIDED AND CONTINUOUSLY UTILIZED BY FLOWING A WASTE SOLUTION RECEIVING AND CONDITIONING LIQUID ALONG A FLOOR CATCH BASIN. THE CONDITIONING LIQUID WITH ITS LIQUID WASTE CONTENT FROM A LOWER END OF THE CATCH BASIN IS COLLECTED IN AN END-POSITIONED SUMP HAVING SUFFICIENT CAPACITY TO ALLOW SAFT TREATMENT OF THE PROBABLE WORST CONDITION WITH REGARD TO THE SPILLAGE OF ACID AND CYANIDE SOLUTION CONTAINING TANKS OF THE PROCESSING LINE. A PH INDICATOR IS PROVIDED AT THE SUMP FOR IMMEDIATELY INDICATING THE APPROACH OF THE SOLUTION TO OR THE ATTAINMENT OF AN ACID PH DUE, FOR EXAMPLE, TO A MAJOR SPILLAGE OR A COMPLETE LOSS OF SOLUTION FRO AN ACID CONTAINING TANK OF THE LINE. THIS INDICATOR IS CONNECTED TO CAUSE THE OPENING OF A NORMALLY CLOSED VALVE FOR IMMEDIATELY SUPPLYING A NEUTRALIZING ALKALINE CHEMICAL, SUCH AS SODIUM HYDROXIDE, TO THE SOLUTION IN THE SUMP AND BRING IT UP TO AND MAINTAIN IT WITHIN AN ALKALINE PH RANGE TO INHIBIT THE FORMATION OF TOXIC HYDROGEN CYANIDE GAS. THE SOLUTION FROM THE SUMP IS CONTINUOUSLY FLOWED INTO A CONDITIONING TANK, AT WHICH TIME, A SOLUBLE ALKILINE CHEMICAL, SUCH AS AN EARTH METAL HYDROXIDE, IS ADDED TO RAISE ITS PH, AND A CYANIDE REACTING CHEMICAL, SUCH AS SODIUM OR CALCIUM HYPOCHLORITE OR CHLORINE, MAY BE ADDED TO REACT WITH ANY CYANIDE CONTENT TO DESTROY CYANIDE CHEMICALS THROUGH OXIDATION BY CHLORINE IN THE ALKALINE RANGE. THE SOLUTION IS MOVED FROM THE CONDITIONING TANK INTO A RESERVOIR WHERE IT IS HELD TO PRECIPITATE-OUT AND SETTLE THE PRECIPITATED METAL SALTS AND PROVIDE A FULLY RECONDITIONED AQUEOUS LIQUID OR SOLUTION FOR REUTILIZATION.
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公开(公告)号：US3712135A
公开(公告)日：1973-01-23
申请号：US3712135D
申请日：1971-10-29
申请人： DART IND INC
发明人： REVES E
CPC分类号： G05D7/03 , Y10T137/87338 , Y10T137/87507
摘要： A flow rate calibration apparatus and method therefor is designed to accurately calibrate the flow rate of very small streams that are difficult and potentially dangerous to handle. The apparatus is particularly adaptable to measuring the flow rates of relatively high pressure streams. The apparatus comprises a receptacle for a calibrating medium, e.g., mercury, which receptacle contains a high pressure leg with an inlet and a low pressure leg with an outlet and a conduit interconnecting the legs for maintaining them in fluid communication; sensing means for sensing differential pressure; conduit means for flow of fluid from the pump through the sensing means and the inlet to the high pressure leg and for flow of the fluid from the low pressure leg through the outlet and the sensing means to the receiving vessel during the calibrating portion of the cycle; by-pass means for by-passing the fluid around the first means during the by-pass portion of the cycle; and timing means for controlling the time interval the apparatus remains in the calibrating portion of the cycle and for controlling the time interval the apparatus remains in a by-pass portion of the cycle. The differential is translated directly into a reading of amount of fluid pumped over the time interval of the calibrating portion of the cycle.
摘要翻译： 流量校准装置及其方法被设计为精确地校准难以处理和潜在危险的非常小的流的流量。 该装置特别适用于测量相对高压力流的流量。
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