38results about How to "Improve chemical efficiency" patented technology

The invention discloses a preparation method of a polyurethane capsule. The preparation method comprises the following steps: 1) uniformly stirring 100 parts of oil-soluble matters, 100-200 parts of polyurethane acrylate oligomer, 100-500 parts of an organic co-solvent and 0.5-40 parts of a photoinitiator to obtain an oil phase solution; 2) adding the oil phase solution into 200-300 parts of an aqueous solution of an emulsifier with the concentration of 0.1-50wt%, and shearing and emulsifying to obtain an oil-in-water emulsion; and 3) carrying out a reaction on the oil-in-water emulsion under the condition of stirring and ultraviolet irradiation to obtain a suspension rich in polyurethane capsule. The method is used to prepare the polyurethane capsule by means of quick initiation by ultraviolet light, so that the preparation time of the polyurethane capsule is greatly shortened. Meanwhile, the content of capsule in the capsule suspension prepared by the preparation method is high, and the method is suitable for industrialized production.

An apparatus for chemically toughening glass which can toughen the surface of the glass by inducing compressive stress on the glass surface through ion exchange and a method of chemically toughening glass using the same. The apparatus includes a chemical toughening bath which chemically toughens the glass; a transportation part which transports the glass from upstream of the chemical toughening bath through the chemical toughening bath to downstream of the chemical toughening bath; and a microwave generator disposed above the chemical toughening bath, the microwave generator radiating microwaves to the glass.

A method of increasing chemical efficiency of chemical additives in a papermaking system includes the steps of providing thick stock pulp comprising soluble lignin, process water, and at least about 2% by weight of cellulosic fiber based on total weight of thick stock pulp, and adding at least one laccase enzyme and at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein. The organic polymer is chosen from cationic polymers, non-ionic polymers and combinations thereof.

The invention provides a method for preparing capsules with oil-soluble etherified amino resin in situ as wall-forming monomers. The method includes the following steps that firstly, alkanol etherified amino resin with different carbon chain lengths and oil-soluble matter are mixed and fully stirred and dissolved to obtain a homogeneous oil phase; secondly, the prepared homogeneous oil phase is added into an aqueous solution containing emulsifier for sufficient stirring, shearing and emulsifying, and emulsion drops with the grain size ranging from 10 nm to 5 mm are obtained; thirdly, the emulsion drops are heated according to programs, the pH value is adjusted so that the etherified amino resin can have a polymerization and solidification reaction on the surfaces of the emulsion drops to form capsule walls covering the oil phase, and the capsules with nuclear shell structure are obtained after filtering and washing. The synthesis technology is simple, energy consumption is low, requirements of equipment are low, reaction conditions are easy to control, and the prospect of large-scale production is achieved. The easy capsulation method has very huge application prospects in the fields of pesticide, cosmetics and intelligent heat-storage temperature-adjusting textile.