摘要:
Disclosed is a water-absorbent resin particle in which the water-absorption rate of physiological saline is 1 second to 15 seconds, the median particle size is 100 μm to 600 μm, and the residual volatile component content is 1.5% by weight or less.
摘要:
Disclosed is a water-absorbent resin particle in which the water-absorption rate of physiological saline is 1 second to 15 seconds, the median particle size is 100 μm to 600 μm, and the residual volatile component content is 1.5% by weight or less.
摘要:
The present invention provides a method for producing water-absorbent resin particles which show an excellent water absorption rate and high equilibrium swelling capacity and which have an appropriate particle size to be excellent in handleability, and water-absorbent resin particles obtained by the method. The present invention is a method for producing water-absorbent resin particles by reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer, the method including the steps of: (A) first reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium using a water-soluble radical polymerization initiator, in the absence of an internal crosslinking agent and in the presence of a surfactant having an HLB of 8 to 12; (B) intermediate crosslinking reaction by adding an intermediate crosslinking agent; (C) second reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer added to the petroleum hydrocarbon dispersion medium containing the surfactant dissolved therein using a water-soluble radical polymerization initiator in the absence of an internal crosslinking agent, thereby producing a water-absorbent resin precursor; and (D) post crosslinking reaction of the water-absorbent resin precursor preliminary adjusted to have a moisture content of 30 to 100% by mass relative to a water-soluble ethylenically unsaturated monomer component in the water-absorbent resin precursor.
摘要:
The present invention provides a method for producing water-absorbent resin particles which show an excellent water absorption rate and high equilibrium swelling capacity and which have an appropriate particle size to be excellent in handleability, and water-absorbent resin particles obtained by the method. The present invention is a method for producing water-absorbent resin particles by reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer, the method including the steps of: (A) first reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium using a water-soluble radical polymerization initiator, in the absence of an internal crosslinking agent and in the presence of a surfactant having an HLB of 8 to 12; (B) intermediate crosslinking reaction by adding an intermediate crosslinking agent; (C) second reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer added to the petroleum hydrocarbon dispersion medium containing the surfactant dissolved therein using a water-soluble radical polymerization initiator in the absence of an internal crosslinking agent, thereby producing a water-absorbent resin precursor; and (D) post crosslinking reaction of the water-absorbent resin precursor preliminary adjusted to have a moisture content of 30 to 100% by mass relative to a water-soluble ethylenically unsaturated monomer component in the water-absorbent resin precursor.
摘要:
The present invention provides a method for producing water-absorbent resin particles which show an excellent water absorption rate and high equilibrium swelling capacity and which have an appropriate particle size to be excellent in handleability, and water-absorbent resin particles obtained by the method. The present invention is a method for producing water-absorbent resin particles by reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer, the method including the steps of: (A) first reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum hydrocarbon dispersion medium using a water-soluble radical polymerization initiator, in the absence of an internal crosslinking agent and in the presence of a surfactant having an HLB of 8 to 12; (B) intermediate crosslinking reaction by adding an intermediate crosslinking agent; (C) second reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer added to the petroleum hydrocarbon dispersion medium containing the surfactant dissolved therein using a water-soluble radical polymerization initiator in the absence of an internal crosslinking agent, thereby producing a water-absorbent resin precursor; and (D) post crosslinking reaction of the water-absorbent resin precursor preliminary adjusted to have a moisture content of 30 to 100% by mass relative to a water-soluble ethylenically unsaturated monomer component in the water-absorbent resin precursor.
摘要:
ObjectThe main object of the present invention is to provide a water-absorbent resin having a suitable particle size, strong particle strength, excellent adhesion to fibers, and excellent flowability as powders as well as properties suitable for a water-absorbent material used in a hygienic material, such as excellent general absorption properties as a water-absorbent resin, and to provide a process for producing the same. Another object of the present invention is to provide an absorbent material and an absorbent article using the water-absorbent resin.Means for Achieving the ObjectA water-absorbent resin having an aspect ratio of 1.0 to 3.0 and a median particle size (D) of 100 to 2,000 μm in which primary particles having an aspect ratio of 1.1 to 200 and a median particle size (d) of 50 to 600 μm are agglomerated.
摘要:
A vehicle motion control system which is to be installed on a vehicle having a single front wheel, a right wheel and a left wheel. The control system includes: (a) a front-wheel steering device configured to steer the front wheel; (b) a braking device configured to apply a braking force to each of the wheels; and (c) a controlling device including a braking-force controlling portion configured to control the braking force that is to be applied to each of the wheels. The braking-force controlling portion includes a slip-management controlling portion configured, when the vehicle is to be braked in a direction-change situation that there is a change of a heading direction of the vehicle due to slip of at least one of the right and left wheels and/or when the vehicle is to be braked in a direction-change risk situation that there is a risk of the change of the heading direction of the vehicle, to execute a slip managing control, such that a magnitude of the braking force applied to the front wheel varies depending on a direction of turning of the front wheel.
摘要:
A checking ECU 45 controls, in step S11, an electromagnetic clutch 31 into a disconnected state in a state where a turning electric motor 22 is stopped, and acquires a steering angle θ and a steering torque T in step S12. The checking ECU 45 determines in step S13 whether or not the steering torque T is equal to or less than a target torque To. When the steering torque T is equal to or less than the torque To, the checking ECU 45 proceeds to step S14, and sets an anomaly flag MBF to “0” indicating that the clutch 31 is normal. Meanwhile, when the torque T is determined in step S13 to be greater than the torque To, the checking ECU 45 proceeds to step S15, and sets the flag MBF to “1” indicating that the clutch 31 is anomalous. This anomaly determination is executed when the steering angle θ is determined in step S16 to be equal to or less than a predetermined steering angle θo.
摘要:
An ECU calculates the thermal margins of the in-wheel motors, on the basis of the thermal capacities of the in-wheel motors, the allowable limit temperatures, and the motor temperatures. Next, the ECU distributes the total requested torque between the requested torques for each wheel using the percentages of the thermal margins. The ECU controls the operation of an inverter such that the in-wheel motors generate the requested torques for the wheels. Thus, the four in-wheel motors generate uniform amounts of heat.
摘要:
A method for the therapeutic treatment and/or prophylaxis of gastro-intestinal diseases using a sulfodehydroabietic acid of the formula: ##STR1## or a pharmaceutically acceptable salt thereof is disclosed.