Abstract: A method for producing polyether ketone ketone at a high yield is disclosed. According to the method, a catalyst injection rate is controlled during production to suppress scale formation, whereby the yield can be improved. A polyether ketone ketone produced by the method is disclosed. The method makes it possible to maintain an intrinsic viscosity (IV) of the polymer without a significant change and adjust a particle size of polyether ketone ketone by preventing an aggregation between resin particles, thereby suppressing scale formation.

Abstract: A power control of a wireless charging inverter is provided. Communication is performed between a driving vehicle and an inverter used for wireless charging of a vehicle. Using the location information of the driving vehicle, the time for the driving vehicle to enter the power supply line and the expected time to leave the power supply line are predicted. The power of the inverter is controlled by using the predicted enter and exit time information of the driving vehicle.

Abstract: The present disclosure relates to an apparatus for preparing super-absorbent polymer (SAP) and a method for preparing SAP using the same. The apparatus for preparing SAP includes, a belt formed between two or more rotary shafts and traveling in a predetermined direction upon the rotation of the rotary shafts; and a feeding unit feeding a monomer composition to the belt, wherein the belt includes recess patterns at a bottom thereof.

Abstract: The present invention relates to an apparatus for cutting a super absorbent polymer and a method for preparing a super absorbent polymer using the same. The apparatus for cutting a super absorbent polymer of the present invention includes: an injection part for injecting a super absorbent polymer; a first cutter for primarily cutting the super absorbent polymer; a second cutter for secondarily cutting the super absorbent polymer; and a discharging part for discharging the cut super absorbent polymer.

Abstract: The present invention relates to a super absorbent resin cutting device and a super absorbent resin manufacturing method using the same. The super absorbent resin cutting device according to the present invention includes: an introduction unit for introducing a super absorbent resin; a cutter for cutting the super absorbent resin into pieces; and a discharge unit for discharging the super absorbent resin that has been cut.

Abstract: The present invention relates to a method for preparing a superabsorbent polymer. The method for preparing a superabsorbent according to the present invention includes the steps of: polymerizing a monomer composition into a superabsorbent polymer in a polymerization reactor; grinding the obtained superabsorbent polymer; and hydrolyzing the fine particles generated during the process and reusing the same for the monomer composition.

Abstract: The present invention relates to a method for preparing a superabsorbent polymer. The method for preparing a superabsorbent polymer according to the present invention includes the steps of: polymerizing monomer compositions in at least two polymerization reactors; grinding the polymers obtained in the polymerization step; drying the polymers; and mixing the polymers.

Abstract: An apparatus for manufacturing a super absorbent polymer, including: a belt installed over two or more rotary shafts and moved in a predetermined direction by the rotation of the rotary shafts; a supply unit supplying a monomer composition to the belt; and a cover covering at least a part of the belt and passing the belt from one side thereof to the other side thereof, wherein the belt includes a horizontal bottom, and lateral jaws provided at both ends of the belt at an angle of 30° to 70° to the horizontal bottom, and the cover includes heat inlets for supplying heat into the cover at both lateral sides thereof.