摘要:
Fluorinated ion exchange polymers which have pendant side chains which contain --OCF.sub.2 COOR groups, or which have both pendant side chains containing carboxylic groups and pendant side chains which contain sulfonyl groups, when used in the form of membranes to separate the anode and cathode compartments of an electrolysis cell, permit operation at high current efficiency. Those containing both carboxylic and sulfonyl groups can be made by oxidation of fluorinated polymers which have pendant side chains containing sulfinic groups, or both sulfinic and sulfonyl groups. The fluorinated polymers which have pendant side chains containing sulfinic groups, or both sulfinic and sulfonyl groups, are in turn made from fluorinated polymers which have pendant side chains containing sulfonyl halide groups by reduction with, for example, hydrazine. Those polymers which have only pendant side chains which contain --OCF.sub.2 COOR groups can be made by copolymerization of a mixture of monomers, one of which is a vinyl monomer which contains the indicated carboxylic group. Fluorinated ion exchange polymers which have pendant side chains containing --OCF.sub.2 COOR groups and also pendant side chains which contain sulfonyl groups can also be made by copolymerization of a mixture of monomers, one of which is a vinyl monomer which contains the indicated carboxylic group; and also by treatment of a polymer which contains --OCF.sub.2 CF.sub.2 SO.sub.3 H or salts thereof with a combination of fluorine and oxygen.
摘要:
Fluorinated ion exchange polymers which have pendant side chains which contain --OCF.sub.2 COOR groups, or which have both pendant side chains containing carboxylic groups and pendant side chains which contain sulfonyl groups, when used in the form of membranes to separate the anode and cathode compartments of an electrolysis cell, permit operation at high current efficiency. Those containing both carboxylic and sulfonyl groups can be made by oxidation of fluorinated polymers which have pendant side chains containing sulfinic groups, or both sulfinic and sulfonyl groups. The fluorinated polymers which have pendant side chains containing sulfinic groups, or both sulfinic and sulfonyl groups, are in turn made from fluorinated polymers which have pendant side chains containing sulfonyl halide groups by reduction with, for example, hydrazine. Those polymers which have only pendant side chains which contain --OCF.sub.2 COOR groups can be made by copolymerization of a mixture of monomers, one of which is a vinyl monomer which contains the indicated carboxylic group.Fluorinated ion exchange polymers which have pendant side chains containing --OCF.sub.2 COOR groups and also pendant side chains which contain sulfonyl groups can also be made by copolymerization of a mixture of monomers, one of which is a vinyl monomer which contains the indicated carboxylic group; and also by treatment of a polymer which contains --OCF.sub.2 CF.sub.2 SO.sub.3 H or salts thereof with a combination of fluorine and oxygen.
摘要:
Ion-exchange films, membranes and laminar structures incorporating a layer of a blend of a first fluorinated polymer which contains sulfonyl groups in ionizable form and a second fluorinated polymer which contains carboxylic acid functional groups, when used to separate the anode and cathode compartments of an electrolysis cell, permit operation at high current efficiency and low power consumption. They can be made by synthesis of precursor polymers in melt-fabricable form, blending, fabrication of the film, membrane or laminar structure, and hydrolysis of the functional groups to ionizable form, such as the free acid form or alkali metal salt thereof.
摘要:
Ion-exchange films, membranes and laminar structures incorporating a layer of a blend of a first fluorinated polymer which contains sulfonyl groups in ionizable form and a second fluorinated polymer which contains carboxylic acid functional groups, when used to separate the anode and cathode compartments of an electrolysis cell, permit operation at high current efficiency and low power consumption. They can be made by synthesis of precursor polymers in melt-fabricable form, blending, fabrication of the film, membrane or laminar structure, and hydrolysis of the functional groups to ionizable form, such as the free acid form or alkali metal salt thereof.
摘要:
Versatile methods of refining a first and a second layer of a workpiece are discussed. New refining methods and refining apparatus are disclosed. The new refining methods can help improve yield and appreciably change the cost of manufacture for refining of workpieces. The methods can be applied to workpieces having extremely close tolerances such as semiconductor wafers. New methods of control are also discussed. Methods use controllers, processors, computers, and processor readable memory devices are discussed. Use of stored information is to make changes in process control are discussed. Use of process models are discussed for refining. Determining a changed process control with stored information from first and second layers of a workpiece is disclosed. A changed process control can make an appreciable changes to the cost of manufacture of a workpiece.
摘要:
An apparatus for planarizing is disclosed. A methods of planarizing are disclosed. The methods and apparatus, can help improve yield and lower the cost of manufacture for planarizing of workpieces having extremely close tolerances such as semiconductor wafers. Cost of manufacture information are used for control. Methods to determine preferred changes to process control parameters are disclosed. Cost of manufacture models can be used and are disclosed. Process models can be used and are disclosed. A method to use business calculations combined with physical measurements to improve control is discussed. Use of business calculations to change the cost of planarizing and finishing semiconductor wafers is discussed. Activity based accounting can be used for some applications. Electro-planarizing and electro-processing for adding and removing material is disclosed. Use of current cost of manufacture information including activity based accounting information for improving manufacture, cost of manufacture, and profitability is discussed.
摘要:
Methods of refining using a plurality of refining elements are discussed. A refining apparatus having refining elements that can be smaller than the workpiece being refined are disclosed. New refining methods, refining apparatus, and refining elements disclosed. Methods of refining using frictional refining, chemical refining, tribochemical refining, and electrochemical refining and combinations thereof are disclosed. A refining apparatus having magnetically responsive refining elements that can be smaller than the workpiece being refined are disclosed. The refining apparatus can supply a parallel refining motion to the refining element(s) for example through magnetic coupling forces. The refining apparatus can supply multiple different parallel refining motions to multiple different refining elements for example solely through magnetic coupling forces to improve refining quality and versatility. A refining chamber can be used. New methods of control are refining disclosed. The new refining methods, including magnetic refining methods, apparatus, and refining elements, including magnetically responsive refining elements, can help improve yield and lower the cost of manufacture for refining of workpieces having extremely close tolerances such as semiconductor wafers. New methods of control are also discussed. Methods and apparatus which use processor readable memory devices are discussed. Refining fluids are preferred. Reactive refining aids are preferred. Electro-refining for adding and removing material is disclosed. New methods and new apparatus for non-steady state refining control are disclosed.
摘要:
A method of in situ control for finishing semiconductor wafers to improve cost of ownership is discussed. A method to use business calculations combined with physical measurements to improve control is discussed. The use of lubricating layer control in the operative finishing interface is discussed. Use of business calculations to change the cost of finishing semiconductor wafers is discussed. The method aids control of differential lubricating films and improved differential finishing of semiconductor wafers. The method aids cost of manufacture forecasting. The method can help manage and/or reduce cost of manufacture for pre-ramp-up, ramp-up, and commercial manufacture of the workpieces. The method can aid cost of manufacture forecasting for pre-ramp-up, ramp-up, and commercial manufacture of the workpieces. The method can aid process control for pre-ramp-up, ramp-up, and commercial manufacture of workpieces. Activity based accounting can be preferred for some applications. Planarization and localized finishing can be improved using differential lubricating films for finishing. New methods and new apparatus for finishing control are disclosed.
摘要:
Versatile methods of refining a first and a second layer of a workpiece are discussed. New refining methods and refining apparatus are disclosed. The new refining methods can help improve yield and appreciably change the cost of manufacture for refining of workpieces. The methods can be applied to workpieces having extremely close tolerances such as semiconductor wafers. New methods of control are also discussed. Methods use controllers, processors, computers, and processor readable memory devices are discussed. Use of stored information is to make changes in process control are discussed. Use of process models are discussed for refining. Determining a changed process control with stored information from first and second layers of a workpiece is disclosed. A changed process control can make an appreciable changes to the cost of manufacture of a workpiece.
摘要:
Ovenware for microwave ovens which contain a composition comprising a susceptor and a thermoplastic or thermoset polymer are improved when the composition also has a thermal conductivity of about 0.7 W/m° K. or more. Heat generated by absorption of microwave radiation by the susceptor is more readily conducted to the food being cooked when the thermal conductivity of the composition is high, particularly when the part containing the susceptor is relatively thick. Also described are designs for various pieces of ovenware containing this composition.