WO2002039093A1 - Verfahren und vorrichtung zur bestimmung des quellverhaltens von polymergelen unter druck - Google Patents
Verfahren und vorrichtung zur bestimmung des quellverhaltens von polymergelen unter druck Download PDFInfo
- Publication number
- WO2002039093A1 WO2002039093A1 PCT/EP2001/012939 EP0112939W WO0239093A1 WO 2002039093 A1 WO2002039093 A1 WO 2002039093A1 EP 0112939 W EP0112939 W EP 0112939W WO 0239093 A1 WO0239093 A1 WO 0239093A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- superabsorbent material
- measuring
- tube
- marking
- measuring vessel
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
Definitions
- the invention relates to a method and a device for determining the swelling behavior of polymer gels under pressure, in particular weakly cross-linked polymer gels made of acrylic acid, salts of acrylic acid and acrylates.
- Weakly crosslinked polymer gels which are preferably made from acrylic acid, salts of acrylic acid, acrylates and bifunctional crosslinking agents, are able to absorb large amounts of water or saline solutions via osmotic pressure
- CRC Retention Capacity
- the absorption properties are determined according to the methods currently used according to the teabag method. For this purpose, a certain amount of the polymer gel is weighed into a tea bag, the tea bag is then closed and immersed in a 0.9% saline solution for 20 minutes. Then the tea bag is weighed again. The weight of the salt solution taken up, based on the amount of polymer gel used, is referred to as FSC. If the tea bags are centrifuged at approx. 250 g for 3 minutes after immersion and then weighed, the CRC is obtained by the second weighing process.
- EP 0 339 461 A1 discloses a method for determining the absorption behavior of the gel under pressure.
- EP 0 339 461 A1 relates to absorbent products which contain gels which swell under pressure.
- An absorbent material which is a porous matrix of fibers and superabsorbent material, receives the superabsorbent material between the free spaces of the porous matrix.
- the superabsorbent material has the ability to absorb about 24 ml of a saline solution per gram when subjected to a certain external compressive force, provided that it is in the form of discrete particles, with at least 50% of the superabsorbent material having a size that average pore size of a wetted matrix exceeds.
- An absorption tester is used in which a porous plate is provided which contains a multiplicity of line ports which open inside the porous plate. The individual line ports are connected to the
- Absorbent tester container in connection, which in turn is arranged on an electric scale. With the help of the balance, the fluid flow to hydrocolloid particles is determined.
- the colloid particles are received in a special vessel, which is concentric to the grid and in which a bottom is embedded.
- a plexiglass flask is inserted into the vessel, which is weighted with a lOOg weight. This applied pressure force simulates the pressure force that prevails, for example, in the interior of a baby diaper.
- Pre-selected granules are introduced into the vessel as a superabsorbent material to test the absorption under pressure before the plexiglass flask and the weight acting on it are let into the vessel.
- filter paper is placed on the lattice structure above the line ports in such a way that undesired evaporation via the line ports is excluded and saturation can occur.
- About 0.16 g particles of the superabsorbent gel are placed on the underside of the vessel; the filled vessel with the weighted piston is placed on the filter paper.
- the fluid intake behavior is measured manually. The so preserved Measured values are checked twice in order to examine the values obtained for plausibility and incorrect measurements.
- the object of the invention is to provide a method for the contactless determination of both the absorption behavior under pressure and the swelling kinetics.
- the object is achieved by a method for determining the swelling behavior and the swelling kinetics of superabsorbent material, such as polymer gels, whereby a defined volume of the dry superabsorbent material is placed in a measuring vessel and a compressive force on the superabsorbent material by means of an element which can be moved within the measuring vessel is applied and the expansion of the superabsorbent material is determined contactlessly within a chamber by detecting the change in height of a tube which delimits the chamber and is guided in a guide and provided with a height marking.
- superabsorbent material such as polymer gels
- the kinetics of the swelling process can be recorded via continuously carried out measurements, for example via a CCD optics during the swelling.
- Automatic computer-controlled measurements are preferably carried out, which only involve a minimum of expensive, manual tasks and thus prevent human measurement influences, such as an inaccurate reading of the height, with a corresponding impairment of the measurement accuracy.
- the sample throughput can be increased by parallelizing the Procedure possible. It is preferably possible to set up several, for example up to 1000 or particularly preferably up to 100 tubes next to and / or in succession and / or also in whole or in part one above the other, so that with one or more optical observation devices, for example, the heights of the tubes in several measuring vessels simultaneously can be detected.
- the non-contact determination of the height of the measuring tube provided with a marking can be optically recorded in front of a background surface which has a contrast to the selected marking of the tube.
- the optical detection enables freely selectable time intervals in which measurements can be taken, so that almost continuously running swelling kinetics curves can be recorded.
- the pixel coordinate which corresponds to the tip of the marking of the tubes, can be converted into a source height of the superabsorbent material by means of calibration.
- the relationship between the pixel coordinate reflecting the height of rise of the tube and the source height of the superabsorbent material measured in each case can be represented by relationships of characteristic curves.
- the pressure force acting on the superabsorbent material in the measuring vessel can be varied by suitable dimensioning of the tube and the material of the tube.
- this design option allows the pressure forces acting in each case to be varied very easily and adapted to the most varied of test cycles.
- the particulate superabsorbent material is preferably in particle sizes between 100 ⁇ m and 1 mm, particularly preferably in particle sizes between
- Swelling kinetics of the superabsorbent material can be used. It can also be
- the swelling kinetics of the superabsorbent material accommodated in the chamber of the measuring vessel can be optically achieved by means of continuous, non-contact
- source kinetics can be applied continuously on a display surface such as, for example, a PC screen surface or other media at freely selectable times, which are the fractions of particles of the superabsorbent to be evaluated
- a procedure according to the method proposed according to the invention is particularly economical, in which the non-contact detection of the heights or markings of tubes is carried out in parallel on a plurality of measuring vessels immersed in a common container and, at the same time, loaded with a saline solution in parallel connected measuring vessels.
- the plurality of tube-shaped measuring vessels arranged next to one another can be assigned a background surface corresponding to the width of all measuring vessels and contrasting with the markings on the tubes.
- a non-contact detection device such as an optical CCD
- the camera can be moved in such a way that the entire background area extending over the width of the individual measuring vessels that are recorded next to one another can be covered.
- the large number of measuring vessels can be arranged next to and / or one behind the other and / or in whole or in part one above the other, depending on which rooms are available for accommodating the measuring apparatus.
- contactless detection of the height of rise of the markings of the plurality of tubes in staggered measurement planes arranged one behind the other or one above the other can be achieved by means of a movable optical system.
- Pressures> 50 Pa are preferably generated on the superabsorbent material by the tube, which is movable in the measuring vessel in the vertical direction.
- the method proposed according to the invention of continuously recording the height of the markings of the tubes against a contrasting background area by means of a movable lens, for example a CCD lens, can preferably be implemented on an automatic computer-aided evaluation system arranged downstream of the movable lens.
- an automatic computer-aided evaluation system arranged downstream of the movable lens.
- the object is also achieved by a device for determining the swelling behavior or swelling kinetics of superabsorbent material such as, for example, polymer gels, a defined volume of the dry, superabsorbent material being placed in a measuring vessel, where a pressure force on the element is moved by means of an element that can be moved within the measuring vessel superabsorbent material is applied, the superabsorbent material being received in a chamber of the measuring vessel and being subjected to a compressive force through a tube which can be moved in the measuring vessel, the tube and measuring vessel being made of metal and the chamber having a saline solution through a sieve and a frit Connection is established.
- superabsorbent material such as, for example, polymer gels
- Expansion of superabsorbent material can be made and by means of the tube which is movably guided in the measuring vessel, a defined pressure force can be exerted on the superabsorbent material, the expansion behavior of which, or the swelling kinetics thereof, is to be determined.
- a metallic design of the measuring vessel and tube prevents undesirable electrostatic charging of the two components which can be moved relative to one another, which could lead to polymer gel particles being able to get between the tube and the tube and disrupt or completely prevent the swelling-related movement of the tube.
- the movable tube In a preferred embodiment of the movable tube, it consists of a metallic material which is provided with a marking in the area of its upper end face. The marking on the upper end face of the movable tube facilitates the determination of the height of the tube, in particular in front of a background surface that contrasts with the marking.
- the measuring vessels can be positioned as a large number of individual measuring devices lying next to one another in front of a contrasting background surface common to all measuring vessels, which is covered by an optical system which can be stationary or can also be moved with respect to the measuring vessels.
- a large number of measuring vessels can be arranged in staggered measuring planes, the movable tubes of the large number of measuring vessels being arranged in front of contrasting background areas for determining the height of the tubes are assigned to a measurement plane, the contrasting background area corresponding to a measurement plane being able to be swept over by the movable optics in their entirety.
- FIG. 1 shows the construction of a measuring vessel with a movable tube with marking, which delimits a chamber with its lower end face
- Figure 2 recorded swelling kinetics of two sieve fractions superabsorbent
- FIG. 3 shows an arrangement of tubes which are accommodated next to one another and are acted upon by means of a common container containing a saline solution
- FIG. 4 shows a staggered measuring arrangement for the contactless determination of the
- FIG. 1 shows the structure of a measuring vessel with a movable tube, to which a marking is attached, which delimits a measuring chamber with its lower end face.
- a contrasting background surface 1 can optionally be provided behind a tube-shaped measuring vessel 7.
- the contrasting background surface 1 has a lateral width dimension 2 and a vertical height dimension 3 and spans a plane behind the tube-shaped measuring vessel 7.
- the device proposed according to the invention can also contain a separate lighting source of its own, in order to create suitable lighting conditions for the measurement independently of environmental influences.
- the contrasting background area 1 is used to create optimal conditions together with the lighting source by means of optics, regardless of environmental influences such as room brightness, daylight, etc.
- the marking 6 is located as an annular shoulder at the upper end of the tube 4 made of metallic material.
- tubular configured measuring vessel 7 and tube 4 made of metallic material allows undesired electrostatic charges to be generated avoid, which can lead to the fact that gel particles of a superabsorbent material 9 can get between the tube 4 and the inner wall of the measuring vessel 7 and disturb or completely prevent the swelling-related movement of the tube 4 relative to the surrounding measuring vessel 7.
- a lower end face 10 of the tube 4 delimits one through the inner wall of the
- Measuring vessel 7 formed chamber 14.
- the bottom of the chamber 14 is through a
- Screen fabric 13 formed. The screen fabric 13 is located above one of one
- Solution 17 enclosed filter insert 15. Below the filter insert 15 there is a glass frit 16, through which it is ensured that the supply of superabsorbent material 9 received in the measuring chamber 14 is always in connection with the saline solution received in the container 19. This ensures a continuous swelling process of the superabsorbent material 9 within the chamber 14.
- the reference numeral 18 denotes the liquid level of the solution reservoir 17 accommodated in the container 19.
- a compressive force is set on the supply of the superabsorbent material 9 received in the chamber 14.
- the compressive force 12 is preferably set as it is under actual conditions, i.e. it is possible to simulate the pressure forces to which a supply of superabsorbent material 9, for example taken up in a baby diaper, is actually exposed.
- the chamber 14 is bounded laterally by the inner wall 11 of the measuring device, which is preferably made of metallic material 7, the lower end face 10 of the metallic tube 4 and the sieve fabric 13 embedded in the bottom of the measuring vessel 7.
- a non-contact detection device 20 in the form of a CCD camera is assigned to the device for determining the expansion of a superabsorbent material 9 under pressure, shown by way of example in FIG.
- the CCD camera 20 has a suitable lens 22 with which continuous measurements can be carried out. According to the double arrow, the stand 21 of the non-contact detection device 20 can be moved relative to the measuring vessels. Continuous measurements for determining the kinetics of the swelling process during the swelling process can be recorded by means of the contactless detection device 20.
- the contactlessly operating detection device 20 for example designed as one CCD line or array camera
- automatic, computer-controlled measurements can be carried out, which only require a minimum of expensive manual tasks, so that human error is prevented, such as an inaccurate reading of the height of the tubi 4 with a concomitant Impairment of measurement accuracy.
- the swelling of the superabsorbent material 9 in the chamber 4 causes the tube 4 to rise.
- the resulting change in height of the marking 6 of the tube 4 is detected via the contactless, preferably optically designed, detection device 20, which continuously records images of the metallic tube 4.
- the pixel coordinate which corresponds to the tip of the tube 4, can be converted into a source height of the superabsorbent material 9 accommodated in the chamber 14 by means of a corresponding calibration. In this way, the kinetics of the swelling process and the swelling volume present after a certain period of time can be determined in equilibrium.
- the sample throughput can be increased considerably by parallelizing the measuring process.
- a plurality of up to 1000, particularly preferably 100, tubular measuring vessels 7 are preferably set up next to and / or one behind the other and / or also in whole or in part one above the other, so that with one or more optical detection devices 20 the heights of the tubes 4 in several measuring vessels 7 simultaneously can be detected.
- Another advantage of the method proposed according to the invention can be seen in the fact that only one or a few reservoirs 19 need to be provided with water- or salt-containing solution and thus a simultaneous start of the swelling process is ensured.
- an automatic image evaluation connected downstream of the optical detection device 20, all climbing heights or climbing kinetics of the respective superabsorbent materials 9 can be determined by setting a wide variety of compressive forces 12.
- the superabsorbent material 9 is filled in in particle form, for example particle sizes of 200 ⁇ m, using a spoon with several identical or different volumes that can be wiped off in one operation. This allows them to be tubular in the chambers 14 within configured measuring vessels 7 each feed the same identical dry volumes of the superabsorbent material 9. Averaging can be used to increase the measuring accuracy.
- the rising height of the marking 6 in the measuring vessel 7 denotes the tube 4 which can be moved vertically.
- the time axis is designated by reference numeral 24, and the source kinetics, which are shown here, for example, as curves 25 and 26, can be recorded at arbitrarily preselectable time intervals.
- Reference number 25 denotes, for example, the swelling kinetics of a sieve fraction, recorded from a particle size of 400 to 500 ⁇ m over a period of approximately one hour.
- reference number 26 denotes the swelling kinetics of a second sieve fraction which contains a smaller particle size of only 200 to 300 ⁇ m.
- a comparison of the two kinetics shows that the swelling kinetics 25 and 26 of the two sieve fractions during the beginning of the swelling process result in a rapid increase in the marking 6 of the tube 4 consisting of metallic material, whereas the swelling kinetics curves 25 and 26, respectively, continue to swell as the swelling proceeds Approach a maximum asymptotically.
- the rise in the swelling kinetics according to reference numeral 26 has reached its maximum after 10 minutes and does not change this over the time span of the measurement, whereas in the swelling kinetics according to reference number 25, according to the first sieve fraction from smaller particles of the superabsorbent material, there is a further, only slightly asymptotic increase in the Rise height of the tube 4 is observable.
- the individual measuring points can be plotted, for example, as a pixel coordinate on the contrasting background surface 1, so that a measurement record of the source kinetics or the rise heights of the individual tubes 4 can be generated depending on the pressure force 12 set and the superabsorbent material 9 used.
- FIG. 3 shows an arrangement of tubes which are accommodated next to one another and can be loaded by means of a common container containing a saline solution.
- a CCD camera is set as the contactless detection system 20, the stand 21 of which can be moved in the direction of the double arrow, it also being conceivable to arrange the stand 21 in a stationary manner with optics working with a suitable depth of field, so that the entire width of the background surface 27 extending across the width of all tubes 4 is possible.
- each of the measuring vessels 7 contains a tube 4, preferably made of a metallic material, which is provided in the area of its upper end face 5 with a marking 6, which is designed in a way that contrasts with the background surface 27.
- a glass frit designated by reference numeral 16 On the underside of each measuring vessel 7 there is a glass frit designated by reference numeral 16, via which it is ensured that the supply of superabsorbent material 9 in the chambers 14 of the respective measuring vessels 7 of the plurality 29.1 to 29.12 of measuring vessels always contains that in all measuring vessels common container 28 received solvent supply is connected. This ensures a simultaneous start of swelling of the stocks of superabsorbent materials contained in the chambers of the plurality 29.1 to 29.12 of the individual measuring vessels.
- a staggered measuring arrangement for the contactless determination of the swelling behavior or the swelling kinetics of superabsorbent materials is shown in more detail in the illustration in accordance with FIG. 4, with a movable optic which scans the contrasting background surface of the measuring arrangements.
- a contactless detection device 20 is provided, which is preferably designed as a CCD camera.
- the stand 21 of the CCD camera 20 can be moved parallel to the background surfaces 27.
- a lens 22, whose focal length can be adapted to the position of the individual background surfaces 27, is accommodated on the contactlessly operating, for example optical detection device 20 here.
- In the arrangement shown here are staggered arrangements of tubes 4, the plurality 29.1 to 29.12 of which individual tubes can be acted upon via a common solution container 28.
- Each of the plurality 29.1 to 29.12 of the individual measuring vessels 7 is assigned a contrasting background surface 27 which extends across the width of the measuring arrangement.
- the individual containers 28, which contain the saline solvent, are partially arranged one above the other, so that a staggered measuring arrangement results.
- the exemplary embodiment shown is, for example, four measuring planes 32, 33, 34, 35 connected in series, which can be evaluated via a single contactless detection system, so that the sample throughput is increased by a factor of 4 compared to FIG.
- the staggered arrangement of the individual measuring planes means that the respective plurality 29.1 to 29.12 of the individual measuring vessels in each of the measuring planes 32, 33, 34 and 35 is assigned to a background area 27 corresponding to the measuring plane position.
- a single measurement with a single measuring vessel 7 according to FIG. 1 takes place in the following procedure: A measuring spoon with a volume of 70 ⁇ l is filled with suberabsorber granulate Aqualic Cal 400 and smeared off. A weight of 40 mg +/- 3% remains. This is filled into the tube-shaped measuring vessel. Then the tube 4, with a weight of 39.6 g, which generates a pressure of 4900 Pascal, is used. If all cylinders of a parallel measuring arrangement are prepared in this way, an isotonic saline solution is poured into the container 19 or 28, so that the liquid level 18 extends to the upper edge of the filter element 15. Then all tube-shaped measuring vessels 7 are placed on the filter element 15 and the measurement is started at the same time.
- the liquid absorption of the superabsorbent material 9 stored in the chamber 14 is now continuously measured via an optical detection device 20 by determining the rise height of the marking 6 of the tube 4 using a computer program.
- These climbing heights can be related to the liquid absorption capacity of the corresponding one using characteristics Convert superabsorbent material 9, which is to be examined with regard to its absorption behavior under pressure and its swelling kinetics.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01993823A EP1337835A1 (de) | 2000-11-09 | 2001-11-08 | Verfahren und vorrichtung zur bestimmung des quellverhaltens von polymergelen unter druck |
AU2002218291A AU2002218291A1 (en) | 2000-11-09 | 2001-11-08 | Method and device for determining the swelling behavior of polymer gels under pressure |
JP2002541368A JP2004513362A (ja) | 2000-11-09 | 2001-11-08 | 荷重下のポリマーゲルの膨張性の測定方法および装置 |
US10/399,492 US7189575B2 (en) | 2000-11-09 | 2001-11-08 | Method and device for determining the swelling behavior of polymer gels under pressure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10055448.2 | 2000-11-09 | ||
DE10055448A DE10055448A1 (de) | 2000-11-09 | 2000-11-09 | Verfahren und Vorrichtung zur Bestimmung des Quellverhaltens von Polymergelen unter Druck |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002039093A1 true WO2002039093A1 (de) | 2002-05-16 |
Family
ID=7662636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/012939 WO2002039093A1 (de) | 2000-11-09 | 2001-11-08 | Verfahren und vorrichtung zur bestimmung des quellverhaltens von polymergelen unter druck |
Country Status (6)
Country | Link |
---|---|
US (1) | US7189575B2 (de) |
EP (1) | EP1337835A1 (de) |
JP (1) | JP2004513362A (de) |
AU (1) | AU2002218291A1 (de) |
DE (1) | DE10055448A1 (de) |
WO (1) | WO2002039093A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017076343A1 (en) * | 2015-11-06 | 2017-05-11 | The Hong Kong University Of Science And Technology | Biaxial testing system to examine the kinetic behavior of particulate media |
CN110035837A (zh) * | 2017-08-25 | 2019-07-19 | 株式会社Lg化学 | Sap评价装置 |
CN111965090A (zh) * | 2020-09-15 | 2020-11-20 | 天津市捷威动力工业有限公司 | 一种锂电池用高聚物溶胀特性的测量装置和表征方法 |
WO2023234906A1 (en) * | 2022-06-03 | 2023-12-07 | Acibadem Mehmet Ali Aydinlar Universitesi | A test device for measuing liquid absorption capacity |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007057043A1 (en) * | 2005-11-18 | 2007-05-24 | Sca Hygiene Products Ab | Absorbent articles comprising acidic superabsorber and an organic zinc salt |
US8748690B2 (en) * | 2006-11-17 | 2014-06-10 | Sca Hygiene Products Ab | Absorbent articles comprising acidic cellulosic fibers and an organic zinc salt |
EP2083873B1 (de) * | 2006-11-17 | 2010-09-15 | SCA Hygiene Products AB | Saugfähige artikel aus einem organischen zinksalz und einem antibakteriellen mittel oder alkalimetallchlorid oder alkalierdmetallchlorid |
EP2048488A1 (de) * | 2007-10-11 | 2009-04-15 | The Procter and Gamble Company | Verfahren zur Bewertung des Saugverhaltens von saugfähigen Artikeln |
GB0819749D0 (en) * | 2008-10-28 | 2008-12-03 | Swelltec Ltd | Method and apparatus fo testing swellable materials |
GB2475450B (en) * | 2008-10-28 | 2011-11-02 | Swelltec Ltd | Apparatus for testing swellable materials |
DE202008016281U1 (de) * | 2008-12-10 | 2010-04-22 | Mann+Hummel Gmbh | Einrichtung zur Aufnahme von Wasser |
KR101100561B1 (ko) | 2009-04-27 | 2011-12-29 | 현대제철 주식회사 | 철강 슬래그의 수침 팽창비 측정장치 |
US9557315B2 (en) * | 2013-07-29 | 2017-01-31 | Schlumberger Technology Corporation | Confining pressure measurement for zonal isolation evaluation |
CN114924033A (zh) * | 2022-04-07 | 2022-08-19 | 中国科学院广州地球化学研究所 | 一种微量控温溶胀测试仪及其使用方法 |
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EP0339461A1 (de) * | 1988-04-21 | 1989-11-02 | Kimberly-Clark Corporation | Absorbierende Produkte die sich unter Druck ausdehnende Hydrogelstoffe enthalten |
EP0530517A1 (de) * | 1991-08-15 | 1993-03-10 | Kimberly-Clark Corporation | Verfahren zur Behandlung von wasserunlöslichen Superabsorbensmaterialien |
DE4442009A1 (de) * | 1993-11-29 | 1995-06-01 | Ribes Pierre | Vorrichtung zur Messung eines Flüssigkeitsstandes |
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US5206205A (en) * | 1991-08-15 | 1993-04-27 | Kimberly-Clark Corporation | Thermal treatment of superabsorbents to enhance their rate of absorbency under load |
US5599335A (en) * | 1994-03-29 | 1997-02-04 | The Procter & Gamble Company | Absorbent members for body fluids having good wet integrity and relatively high concentrations of hydrogel-forming absorbent polymer |
US6232520B1 (en) * | 1997-02-19 | 2001-05-15 | The Procter & Gamble Company | Absorbent polymer compositions having high sorption capacities under an applied pressure |
US6121509A (en) * | 1998-01-07 | 2000-09-19 | The Procter & Gamble Company | Absorbent polymer compositions having high sorption capacities under an applied pressure and improved integrity when wet |
-
2000
- 2000-11-09 DE DE10055448A patent/DE10055448A1/de active Pending
-
2001
- 2001-11-08 AU AU2002218291A patent/AU2002218291A1/en not_active Abandoned
- 2001-11-08 EP EP01993823A patent/EP1337835A1/de not_active Withdrawn
- 2001-11-08 WO PCT/EP2001/012939 patent/WO2002039093A1/de not_active Application Discontinuation
- 2001-11-08 US US10/399,492 patent/US7189575B2/en not_active Expired - Fee Related
- 2001-11-08 JP JP2002541368A patent/JP2004513362A/ja not_active Withdrawn
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EP0339461A1 (de) * | 1988-04-21 | 1989-11-02 | Kimberly-Clark Corporation | Absorbierende Produkte die sich unter Druck ausdehnende Hydrogelstoffe enthalten |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017076343A1 (en) * | 2015-11-06 | 2017-05-11 | The Hong Kong University Of Science And Technology | Biaxial testing system to examine the kinetic behavior of particulate media |
CN108351286A (zh) * | 2015-11-06 | 2018-07-31 | 香港科技大学 | 一种监测颗粒介质运动特征的双轴测试装置 |
CN110035837A (zh) * | 2017-08-25 | 2019-07-19 | 株式会社Lg化学 | Sap评价装置 |
EP3513881A4 (de) * | 2017-08-25 | 2020-01-01 | LG Chem, Ltd. | Sap-beurteilungsvorrichtung |
US11635421B2 (en) | 2017-08-25 | 2023-04-25 | Lg Chem, Ltd. | SAP evaluation apparatus |
CN111965090A (zh) * | 2020-09-15 | 2020-11-20 | 天津市捷威动力工业有限公司 | 一种锂电池用高聚物溶胀特性的测量装置和表征方法 |
CN111965090B (zh) * | 2020-09-15 | 2023-08-18 | 天津市捷威动力工业有限公司 | 一种锂电池用高聚物溶胀特性的测量装置和表征方法 |
WO2023234906A1 (en) * | 2022-06-03 | 2023-12-07 | Acibadem Mehmet Ali Aydinlar Universitesi | A test device for measuing liquid absorption capacity |
Also Published As
Publication number | Publication date |
---|---|
US20040014226A1 (en) | 2004-01-22 |
EP1337835A1 (de) | 2003-08-27 |
US7189575B2 (en) | 2007-03-13 |
AU2002218291A1 (en) | 2002-05-21 |
DE10055448A1 (de) | 2002-05-23 |
JP2004513362A (ja) | 2004-04-30 |
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