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70results about How to "Reduce sizing costs" patented technology

AKD emulsion and method for producing the same

The invention relates to an AKD emulsion and a preparation method thereof, which belongs to the Paper Chemicals field. Nonionic monomer, positive ion monomer and natural high molecular compound are used to a generate glycerol polymerization reaction for preparing positive ion polymer which is used as emulsifying agent under the effect of compound evocating agent, and then the AKD emulsion is prepared by using the method of mechanical stirring and emulsification. The AKD emulsion is used for glue blending in the slurry and on the surface of paper making, thereby improving glue blending effect and reducing glue blending cost.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Motor power supply

A motor power supply having an inrush current protection mode, a motor drive mode, an overvoltage protection mode, and a dynamic braking mode. In the inrush protection mode, a first resistance limits an inrush current to a capacitor which smoothes a rectifier output to provide DC power to an inverter during the motor drive mode. In the overvoltage protection mode, the first resistance is used in conjunction with a switching element to controllably discharge an overvoltage which may occur across the capacitor due to regenerated energy from the motor passing back through the inverter. During the drive mode, the inverter input is connected with the DC power and during the dynamic braking mode, the inverter input is connected with a second resistance which dissipates the energy regenerated by the motor. A controller controls a multi-contact relay and the switching element to implement the various modes of operation.
Owner:SAMSUNG ELECTRONICS CO LTD

Fluid delivery system and methods

A fluid delivery device for delivering small quantities of fluid such as insulin to a patient, including a disposable unit having a disposable housing that has one lower part and one upper part, which together form a shell that defines an internal partial toroidal arcuate cavity. The housing fits together with a drive unit. The housing contains an arcuate cylinder for containing fluid to be delivered, a piston movably mounted in the cylinder for driving out fluid to be delivered, an adhesive support for attaching the housing and a cannula that when the housing is attached to a patient is insertable in the patient's skin for delivering fluid. The drive unit is preferably removably mounted on a front of the housing opposite the adhesive support, the removable drive unit having a shape that when fitted complements the shape of the front face of the housing to form with the housing.
Owner:SWISSINNOV PROD SARL

Preparation method of surface sizing agent of cationic polyurethane/cationic styrene-acrylic composite emulsion

The invention relates to a preparation method of a surface sizing agent of cationic polyurethane / cationic styrene-acrylic composite emulsion, belonging to the field of paper making chemicals. The preparation method comprises the following steps: adding isophorone diisocyanate, 1,4-butanediol and dehydrated polyethylene glycol oxide into a four-hole boiling flask, and increasing the temperature; stirring and dropwise adding the butanone solution of a cationic chain extender to obtain a prepolymer; decreasing the temperature; adding acid for neutralization; adding acetone for dilution; stirringthe mixture; and then, adding a proper amount of acetone to reduce the viscosity of the prepolymer; adding deionized water into the prepolymer for emulsification; adjusting the pH value to 5-7, and removing the acetone and the butanone to obtain cationic aqueous polyurethane emulsion; and adding the prepared cationic polyurethane, emulsifier and deionized water into the four-hole boiling flask; heating the mixture in the water bath with nitrogen gas protection; stirring the mixture, and increasing the temperature; and adding the water solution of phenyl ethylene, acrylic ester, cationic monomer, acrylamide and water-soluble azo initiators for reaction for 2-4h, cooling the mixture, and then, discharging to obtain a finished product. The invention can improve the sizing effect and reduce the sizing cost.
Owner:MUDANJIANG HENGFENG PAPER CO LTD

Cation cross-linked styrene-acrylic surface sizing agent and preparation method thereof

The invention relates to a cation cross-linked styrene-acrylic surface sizing agent and a preparation method thereof. The surface sizing agent comprises the following raw materials: 10-15 parts of dispersing agents, 0.5-1 parts of oxidizing agents, 1-3 parts of initiating agents, 10-20 parts of hard monomers, 10-15 parts of soft monomers, 1-10 parts of functional monomers, 1-10 parts of cationic monomers, 3-10 parts of crosslinking monomers and 50-80 parts of deionized water, wherein the hard monomer is one or combination of more than one of the styrene, vinyl acetate and methyl methacrylate, and the dispersing agent is native starch. The surface sizing agent utilizes the native starch as the dispersing agents to synthesize the styrene-acrylic surface sizing agent together with raw materials; and compared with a conventional starch-synthesized styrene-acrylic surface sizing agent, the surface sizing agent in the invention is better in film-forming property, higher in stability and higher in cost performance; and the surface sizing agent allows paper to have better water resistance, and meanwhile, can greatly reduce paper sizing cost.
Owner:杭州百事特实业股份有限公司
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