CA2078560A1 - Porous, absorbent, polymeric macrostructures and methods of making the same - Google Patents
Porous, absorbent, polymeric macrostructures and methods of making the sameInfo
- Publication number
- CA2078560A1 CA2078560A1 CA2078560A CA2078560A CA2078560A1 CA 2078560 A1 CA2078560 A1 CA 2078560A1 CA 2078560 A CA2078560 A CA 2078560A CA 2078560 A CA2078560 A CA 2078560A CA 2078560 A1 CA2078560 A1 CA 2078560A1
- Authority
- CA
- Canada
- Prior art keywords
- precursor particles
- absorbent
- porous
- making
- methods
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
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- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
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- C08J2207/12—Sanitary use, e.g. diapers, napkins or bandages
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S521/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S521/919—Sintered product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
- Y10T428/234—Sheet including cover or casing including elements cooperating to form cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
- Y10T428/239—Complete cover or casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
- Y10T428/249964—Fibers of defined composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249986—Void-containing component contains also a solid fiber or solid particle
Abstract
Absorbent polymeric macrostructures (52) that are porous and comprise an interparticle crosslinked aggregate having a circumscribed dry volume greater than about 10.0 mm3. The interparticle crosslinked aggregate comprises a multiplicity of precursor particles of substantially water-insoluble, absorbent, hydrogel-forming, polymer material; and an interparticle cross-linking agent reacted with the polymer material of the precursor particles to form crosslink bonds between the precursor particles. Because of the particulate nature of the precursor particles, the macrostructure (52) has pores between adjacent precursor particles. The pores are interconnected by intercommunicating channels such that the macrostructure is liquid permeable.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/503,393 US5124188A (en) | 1990-04-02 | 1990-04-02 | Porous, absorbent, polymeric macrostructures and methods of making the same |
US503,393 | 1990-04-02 | ||
PCT/US1991/001890 WO1991015362A1 (en) | 1990-04-02 | 1991-03-25 | Porous, absorbent, polymeric macrostructures and methods of making the same |
Publications (2)
Publication Number | Publication Date |
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CA2078560A1 true CA2078560A1 (en) | 1991-10-03 |
CA2078560C CA2078560C (en) | 1999-11-30 |
Family
ID=24001904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002078560A Expired - Fee Related CA2078560C (en) | 1990-04-02 | 1991-03-25 | Porous, absorbent, polymeric macrostructures and methods of making the same |
Country Status (29)
Country | Link |
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US (2) | US5124188A (en) |
EP (1) | EP0595803B1 (en) |
JP (1) | JP3345001B2 (en) |
KR (1) | KR100198377B1 (en) |
CN (1) | CN1043416C (en) |
AU (1) | AU643778B2 (en) |
BR (1) | BR9106315A (en) |
CA (1) | CA2078560C (en) |
CZ (1) | CZ289217B6 (en) |
DE (1) | DE69132930T2 (en) |
EG (1) | EG19208A (en) |
ES (1) | ES2172503T3 (en) |
FI (1) | FI924423A (en) |
HU (1) | HU220254B (en) |
IE (1) | IE911051A1 (en) |
MA (1) | MA22104A1 (en) |
MX (1) | MX172259B (en) |
MY (1) | MY106362A (en) |
NZ (1) | NZ237617A (en) |
PE (1) | PE30191A1 (en) |
PH (1) | PH31586A (en) |
PL (1) | PL167052B1 (en) |
PT (1) | PT97234B (en) |
RU (1) | RU2099093C1 (en) |
SA (1) | SA91110387B1 (en) |
SG (1) | SG55037A1 (en) |
SK (1) | SK281455B6 (en) |
TW (1) | TW213860B (en) |
WO (1) | WO1991015362A1 (en) |
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US4992326A (en) * | 1987-08-28 | 1991-02-12 | Ncneil-Ppc, Inc. | Hydrophilic polymers for incorporating deodorants in absorbent structures |
US4826880B1 (en) * | 1987-09-21 | 2000-04-25 | Johnson & Johnson Inc | Immobilizing particulate absorbents by conversion to hydrates |
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DE3741158A1 (en) * | 1987-12-04 | 1989-06-15 | Stockhausen Chem Fab Gmbh | POLYMERISATES WITH HIGH ABSORPTION SPEED FOR WATER AND AQUEOUS LIQUIDS, METHOD FOR THE PRODUCTION THEREOF AND USE AS ABSORBENTS |
DE3741157A1 (en) * | 1987-12-04 | 1989-06-15 | Stockhausen Chem Fab Gmbh | METHOD FOR THE AGGLOMERATION OF WATER-SOILABLE POLYMER BY MELTING (SINTER) GRANULATION WITH POWDER-SUBSTANCES AND USE OF THE GRANULES |
EP0326382B1 (en) * | 1988-01-28 | 1997-04-23 | Ciba Specialty Chemicals Water Treatments Limited | Polymeric compositions |
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TW201758B (en) * | 1988-06-28 | 1993-03-11 | Catalyst co ltd | |
KR930007272B1 (en) * | 1988-06-28 | 1993-08-04 | 닙본 쇼쿠바이 가브시기 가이샤 | Water-absorbent resin and production process |
WO1990008789A1 (en) * | 1989-01-24 | 1990-08-09 | The Dow Chemical Company | Aggregates or clusters of water-swellable polymers having increased hydration rate over unassociated water-swellable polymers |
US5002986A (en) * | 1989-02-28 | 1991-03-26 | Hoechst Celanese Corporation | Fluid absorbent compositions and process for their preparation |
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-
1990
- 1990-04-02 US US07/503,393 patent/US5124188A/en not_active Expired - Lifetime
-
1991
- 1991-03-25 DE DE69132930T patent/DE69132930T2/en not_active Revoked
- 1991-03-25 EP EP91906912A patent/EP0595803B1/en not_active Revoked
- 1991-03-25 WO PCT/US1991/001890 patent/WO1991015362A1/en active IP Right Grant
- 1991-03-25 CA CA002078560A patent/CA2078560C/en not_active Expired - Fee Related
- 1991-03-25 HU HU9203006A patent/HU220254B/en not_active IP Right Cessation
- 1991-03-25 BR BR919106315A patent/BR9106315A/en not_active IP Right Cessation
- 1991-03-25 RU SU925053243A patent/RU2099093C1/en active
- 1991-03-25 AU AU75786/91A patent/AU643778B2/en not_active Ceased
- 1991-03-25 JP JP50729991A patent/JP3345001B2/en not_active Expired - Fee Related
- 1991-03-25 KR KR1019920702404A patent/KR100198377B1/en not_active IP Right Cessation
- 1991-03-25 SG SG1996003237A patent/SG55037A1/en unknown
- 1991-03-25 ES ES91906912T patent/ES2172503T3/en not_active Expired - Lifetime
- 1991-03-25 PL PL91296244A patent/PL167052B1/en unknown
- 1991-03-28 TW TW080102417A patent/TW213860B/zh active
- 1991-03-28 IE IE105191A patent/IE911051A1/en not_active Application Discontinuation
- 1991-03-28 NZ NZ237617A patent/NZ237617A/en unknown
- 1991-04-01 PE PE1991183793A patent/PE30191A1/en not_active Application Discontinuation
- 1991-04-01 MA MA22373A patent/MA22104A1/en unknown
- 1991-04-02 MY MYPI91000545A patent/MY106362A/en unknown
- 1991-04-02 EG EG19491A patent/EG19208A/en active
- 1991-04-02 SK SK895-91A patent/SK281455B6/en unknown
- 1991-04-02 CN CN91102721A patent/CN1043416C/en not_active Expired - Fee Related
- 1991-04-02 PT PT97234A patent/PT97234B/en not_active IP Right Cessation
- 1991-04-02 CZ CS1991895A patent/CZ289217B6/en not_active IP Right Cessation
- 1991-04-02 MX MX025170A patent/MX172259B/en unknown
- 1991-05-24 US US07/705,451 patent/US5102597A/en not_active Expired - Lifetime
- 1991-06-08 SA SA91110387A patent/SA91110387B1/en unknown
-
1992
- 1992-10-01 FI FI924423A patent/FI924423A/en unknown
-
1993
- 1993-12-08 PH PH47403A patent/PH31586A/en unknown
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