GB1148852A - Microporous sheet and method for preparing same - Google Patents
Microporous sheet and method for preparing sameInfo
- Publication number
- GB1148852A GB1148852A GB20615/67A GB2061567A GB1148852A GB 1148852 A GB1148852 A GB 1148852A GB 20615/67 A GB20615/67 A GB 20615/67A GB 2061567 A GB2061567 A GB 2061567A GB 1148852 A GB1148852 A GB 1148852A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- deposited
- diameter
- small particles
- microns
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/429—Natural polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
1,148,852. Microporous coated sheet material. W. R. GRACE & CO. 3 May, 1967. [3 May, 1966], No. 20615/67. Heading B2E. A micro porous sheet is prepared by forming on a permeable substrate a micro porous layer of thermoplastic polymer by depositing on the substrate relatively large particles of a thermoplastic polymer and thereafter relatively small particles of a thermoplastic polymer, the small particles having a diameter less than two microns and the large particles having a diameter at least seven times the average diameter of the small particles; sintering the polymer particles either in one stage after both the large and the small particles have been deposited, or in two stages, one stage after the large particles have been deposited and one stage after the small particles have been deposited. The small particles may be from 0.01 to two microns diameter. The large particles may have an average diameter at least 40 times the average diameter of the small particles and may have a diameter of from 15 to 70 microns. The large particles may be deposited in two steps, particle 20 to 170 microns in diameter being deposited in the first step and particles 15 to 70 microns in diameter being deposited in the second step. The particles deposited in the first step may be sintered before the second step. The large particles may be deposited by knife coating, air knife coating, falling curtain coating, fog deposition or by electrostatic deposition. The small particles may be hydraulically deposited from a fog of the particles. The small particles may be deposited with the aid of reduced pressure on the side of the substrate opposite the particles. The large or the small particles or both may be composed of polymers or copolymers of vinyl chlorine, vinylidene chloride, acrylonitrile, acrylates, e.g. vinyl chloridevinyl acetate copolymer. The large or the small particles or both may have been prepared by emulsion or suspension polymerization. The substrate may be a glass mat, a mat of synthetic fibres or a cellulosic sheet which may be impregnated with a phenolformaldehyde resin and may have an average pore aperture of 30 to 35 microns. At least 90% of the pore apertures of the micro porous layer may be from 0.5 to 5 microns in diameter. The micro porous layer may be formed on both 'sides of the permeable substrate. The permeable substrate may be removed from the said microporous layer after the latter has been formed. The micro porous sheet may be used to separate electrodes in a battery.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54714766A | 1966-05-03 | 1966-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1148852A true GB1148852A (en) | 1969-04-16 |
Family
ID=24183516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20615/67A Expired GB1148852A (en) | 1966-05-03 | 1967-05-03 | Microporous sheet and method for preparing same |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE697896A (en) |
| CH (1) | CH451492A (en) |
| GB (1) | GB1148852A (en) |
| NL (1) | NL6706132A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440085A1 (en) * | 1978-10-27 | 1980-05-23 | Comp Generale Electricite | Lead accumulator contg. sepg. membrane of chelating resin - esp. for use in confined environments |
| EP1047145A1 (en) * | 1999-04-22 | 2000-10-25 | NBT GmbH | Process for making secondary lithium element with heat-sensitive protective element |
| US9159979B2 (en) | 2008-02-20 | 2015-10-13 | Carl Freudenberg Kg | Nonwoven fabric having cross-linking material |
| EP3704749A4 (en) * | 2017-10-30 | 2021-09-08 | Arkema Inc. | Lithium ion battery separator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007042554B4 (en) * | 2007-09-07 | 2017-05-11 | Carl Freudenberg Kg | Nonwoven with particle filling |
-
1967
- 1967-05-02 BE BE697896D patent/BE697896A/xx unknown
- 1967-05-02 NL NL6706132A patent/NL6706132A/xx unknown
- 1967-05-03 CH CH627167A patent/CH451492A/en unknown
- 1967-05-03 GB GB20615/67A patent/GB1148852A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440085A1 (en) * | 1978-10-27 | 1980-05-23 | Comp Generale Electricite | Lead accumulator contg. sepg. membrane of chelating resin - esp. for use in confined environments |
| EP1047145A1 (en) * | 1999-04-22 | 2000-10-25 | NBT GmbH | Process for making secondary lithium element with heat-sensitive protective element |
| US6511517B1 (en) | 1999-04-22 | 2003-01-28 | Nbt Gmbh | Method for producing a secondary lithium cell comprising a heat-sensitive protective mechanism |
| US9159979B2 (en) | 2008-02-20 | 2015-10-13 | Carl Freudenberg Kg | Nonwoven fabric having cross-linking material |
| EP3704749A4 (en) * | 2017-10-30 | 2021-09-08 | Arkema Inc. | Lithium ion battery separator |
| US11664558B2 (en) | 2017-10-30 | 2023-05-30 | Arkema Inc. | Lithium ion battery separator |
Also Published As
| Publication number | Publication date |
|---|---|
| BE697896A (en) | 1967-10-16 |
| NL6706132A (en) | 1967-11-06 |
| CH451492A (en) | 1968-05-15 |
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