摘要:
Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.
摘要:
Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.
摘要:
This invention relates in part to a method for preparing a pressure vessel for receiving high purity acetylene at elevated pressure. The method involves providing a porous filler-containing pressure vessel, deep cleaning the porous filler-containing pressure vessel, purifying a solvent, and charging the purified solvent into the deep cleaned, porous filler-containing pressure vessel. The pressure vessel is then charged with high purity acetylene for storage, transport and/or delivery of the high purity acetylene. The high purity acetylene may be useful as a source material for depositing carbon and carbon-containing films in semiconductor applications.
摘要:
This invention relates in part to a method for preparing a pressure vessel for receiving high purity acetylene at elevated pressure. The method involves providing a porous filler-containing pressure vessel, deep cleaning the porous filler-containing pressure vessel, purifying a solvent, and charging the purified solvent into the deep cleaned, porous filler-containing pressure vessel. The pressure vessel is then charged with high purity acetylene for storage, transport and/or delivery of the high purity acetylene. The high purity acetylene may be useful as a source material for depositing carbon and carbon-containing films in semiconductor applications.
摘要:
This invention relates in part to a process for producing high purity acetylene by withdrawing a crude acetylene stream from a storage source, and passing said stream through an adsorbent bed that contains layered adsorption media to selectively remove moisture, solvent and carbon dioxide from the stream, thereby producing the high purity acetylene. The adsorption media is regenerated in-situ. The high purity acetylene product is useful as a source material for depositing carbon and carbon-containing films in semiconductor applications.
摘要:
A system, method and computer program product for planning an arrangement of beverage equipment on a virtual surface or counter. The system allows a user to create a virtual surface of chosen dimension (32) and then select one or more beverage machines (36) to place on that surface while verifying that there is sufficient open space for the selected beverage machine (38). Also disclosed is a method of determining projected profit (48) based on the selection of beverage machines, entered values related to costs, and entered values related to serving size and pricing. The system reports on projected profits and/or how long the equipment needs to be operated to pay off the equipment's cost.
摘要:
The present invention is aimed at a method of providing wettability to polyester fibers or filaments, to woven or nonwoven fabrics made therefrom and to resultant articles of manufacture. The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 12 to 15 carbon atoms, or is straight or branched chain alkenyl of 12 to 18 carbon atoms. The alkyl metal sulfonates are present from about 2% to about 5% by weight based on the weight of the polyester. A post treatment step such as an alkaline treatment step is not included. The melt extrusion mixtures do not include certain additives such as polyoxyalkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.
摘要:
An improved metal connector that securely ties together sheathing and underlying structural members on a building to prevent hurricane and earthquake damage. The connector has alternating sheathing tabs for securing adjacent sheathing edges. Connected underneath the sheathing tabs, a rib separates the sheathing and correctly spaces each adjoining sheet with a slight gap to avoid buckling. Below the rib, rafter webs alternate with the sheathing tabs to prevent movement of the sheathing and rafter. The large surface area and precise nail holes on the sheathing tab avoids sheathing splitting and assures correct attachment to the underlying structural member.
摘要:
A shutter for withstanding hurricane wind and pressures has permanent hardware attached to a structure and a temporary shutter that can be stored until needed. Hardware consists of brackets mounted above or below a window and sliding latches at the edges of the window. Sliding latches have a key way for a carriage bolt to enter and attach. Brackets allow a shutter that has attached hinges to latch and pivot around a bridge. The shutter can be made from any material. Hinges are attached to shutter and are able to be latched and pivoted on the brackets mounted on the house. The shutter can also be swung up to protect a high window. The shutter is swung over the window and locked down to sliding latches and carriage bolts with wing nuts through holes in shutter.
摘要:
This invention relates in part to a method for preparing a pressure vessel for receiving high purity acetylene at elevated pressure. The method involves providing a porous filler-containing pressure vessel, deep cleaning the porous filler-containing pressure vessel, purifying a solvent, and charging the purified solvent into the deep cleaned, porous filler-containing pressure vessel. The pressure vessel is then charged with high purity acetylene for storage, transport and/or delivery of the high purity acetylene. The high purity acetylene may be useful as a source material for depositing carbon and carbon-containing films in semiconductor applications.