摘要:
An automatically-activated wireless code symbol reading system comprising a hand-supportable housing having a manually-activatable data transmission switch under automatic communication range dependent control. When a bar code symbol is read, the bar code reader is located inside the predetermined RF data communication range of the system, then the symbol character data string, produced at substantially the same time as the manual activation of the data transmission switch, is transmitted to the base station over the wireless RF communication link. If the device is outside the range, then an audible and/or visual indication is automatically generated, and the packaged symbol character data string is packaged and transmitted to a data storage buffer aboard the bar code reader. Then when the bar code symbol reader is moved within the communication range of the system, the buffered/packaged symbol character data is automatically transmitted to the base station by the RF-based data communication link.
摘要:
Reticulated ceramic monolithic catalysts and non-poisoning catalyst supports comprising one or more metal oxides of chromium, cobalt, nickel, an alkaline earth, a rare earth, or another sinterable metal oxide that are active in any of various chemical oxidation reactions are disclosed. Methods of making the new reticulated ceramic structures comprising impregnating an organic foam or other pore-templating material are also disclosed. Processes for the catalytic conversion of light hydrocarbons to products comprising carbon monoxide and hydrogen employing reticulated ceramic catalysts are described.
摘要:
Selected partially fluorinated olefins containing terminal unfluorinated vinyl groups, and optionally containing other functional groups, may be copolymerized with other olefins such as ethylene and/or propylene using metallocene or Ziegler-Natta type polymerization catalyst systems. The resulting polymers may be used as molding resins, elastomers, for films and in coatings.
摘要:
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Sine some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear .alpha.-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected .alpha.-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected .alpha.-diimine nickel complexes with ethylene. Also disclosed is a copolymer of an olefin and a fluorinated monomer of the formula H.sub.2 C.dbd.CH(CH.sub.2).sub.a R.sub.f R.sup.42 wherein "a" is an integer of 2 to 20, R.sub.f is a perfluoroalkylene group optionally containing one or more ether linkages, and R.sup.42 is a functional group other than fluorine.
摘要:
An absorbent material with substantially improved liquid permeability such that it is not subject to gel blocking while maintaining a preferred absorbent capacity is disclosed. The absorbent material is in particulate form and is the reaction product of a water-insoluble, absorbent, hydrogel-forming polymer and a polycationic polymer, the reaction forming a covalent bond between the polymers. After the reaction, the absorbent material has a Saline Flow Conductivity greater than (500-11.5.multidot.GV)(10.sup.-7) cm.sup.3 sec/g where GV is the gel volume of the absorbent material.
摘要:
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear .alpha.-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected .alpha.-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected .alpha.-diimine nickel complexes with ethylene.
摘要:
An absorbent material comprising a mixture of (1) a plurality of absorbent gelling particles comprising a water-insoluble, water-swellable polymer, and (2) an absorbent property modification polymer reactive with at least one component included in a urine. The mixture is made by (i) applying a solution containing an organic solvent, water and the absorbent property modification polymer onto the plurality of absorbent gelling particles, wherein the weight ratio of the organic solvent to the water is at least 50:50, and (ii) removing a portion of the organic solvent and water from the applied absorbent gelling particles. When a urine is applied to the absorbent material, the absorbent gelling particles are spontaneously connective through the absorbent property modification polymer. The absorbent material has at least one of the improved absorbent properties after swelling such as (1) liquid permeability, (2) porosity, (3) wet integrity, and (4) recovery property when subjected to external forces.
摘要:
A first portion of a security device, the first portion configured to have a separate state with respect to a second portion and a combined state with respect to the second portion, such that when in the combined state, the first portion is mated, interlocked, and/or locked with the second portion to collectively form the security device.
摘要:
A POSS modified polyacrylate fluorine-free waterproofing agent includes following components: 1-10 wt % of a functionalized POSS monomer, 2-20 wt % of methyl methacrylate, 3-26 wt % of butyl acrylate, 1-10 wt % of a long-chain acrylate monomer, 0.5-3.5 wt % of an initiator, 0.5-4 wt % of a reactive cationic emulsifier, and 50-80 wt % of deionized water. A method of preparing a POSS modified polyacrylate fluorine-free waterproofing agent is also disclosed.
摘要:
An electrical device, processes for using and making the device, and products produced thereby. There can be an alarm device and an extension which includes a protrusion. The extension can have wiring, and the alarm device can detect for a change in electricity running through the wiring, such as a change that would occur when the electricity is interrupted when the wiring is cut. The protrusion is located adjacent to the extension, distant from the alarm device, and can include a key, switch, connector, or the like. The protrusion, in some cases, can be releasably connectable to a housing that is in turn connected to the extension, so as to form a loop in which an item can be secured for protection, e.g., from theft.