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IT1260596B - OPEN-PORE BODIES, STABLE IN THE DIMENSION. - Google Patents

OPEN-PORE BODIES, STABLE IN THE DIMENSION.

Info

Publication number
IT1260596B
IT1260596B ITTO930107A ITTO930107A IT1260596B IT 1260596 B IT1260596 B IT 1260596B IT TO930107 A ITTO930107 A IT TO930107A IT TO930107 A ITTO930107 A IT TO930107A IT 1260596 B IT1260596 B IT 1260596B
Authority
IT
Italy
Prior art keywords
pores
open
particles
pore
air
Prior art date
Application number
ITTO930107A
Other languages
Italian (it)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of ITTO930107A0 publication Critical patent/ITTO930107A0/en
Publication of ITTO930107A1 publication Critical patent/ITTO930107A1/en
Application granted granted Critical
Publication of IT1260596B publication Critical patent/IT1260596B/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2095—Tabletting processes; Dosage units made by direct compression of powders or specially processed granules, by eliminating solvents, by melt-extrusion, by injection molding, by 3D printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1638—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate
    • B01D39/1653—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin
    • B01D39/1661—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin sintered or bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/202—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0658—Filter elements specially adapted for their arrangement in vehicles
    • 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
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2004—Excipients; Inactive ingredients
    • A61K9/2022—Organic macromolecular compounds
    • A61K9/2031—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, polyethylene oxide, poloxamers
    • A61K9/204—Polyesters, e.g. poly(lactide-co-glycolide)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Polymers & Plastics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Filtering Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Il corpo a pori aperti, è degradabile e possiede i referenza un gran numero di pori concavi (7), collegati in genere, tramite tanti passaggi brevi (6), ai pori affiancati (7), oppure al lato esterno del corpo (4). La larghezza dei pori ammonta a ca. 20-60? e la larghezza dei passaggi (A) a circa 10-50?. Durante il filtraggio di aria carica di particelle, l'aria entra in modo vorticoso nei pori (7), depositando le particelle lungo le pareti o nella profondità dei pori (7). Il corpo (4) può consistere in un materiale plastico degradabile (5), di preferenza biodegradabile. Il corpo di questo tipo rende possibile un'autoseparazione delle particelle filtrate senza una particolare tecnica od un dispendio energetico. Il corpo secondo l'invenzione è adatto in special modo per la fabbricazione di filtri montati per filtrare l'aria di alimentazione in autovetture.The open-pore body is degradable and has a large number of concave pores (7), generally connected, through many short passages (6), to the pores side by side (7), or to the external side of the body (4) . The pore width amounts to approx. 20-60? and the width of the passages (A) about 10-50 ?. During the filtering of air loaded with particles, the air swirls into the pores (7), depositing the particles along the walls or in the depth of the pores (7). The body (4) can consist of a degradable plastic material (5), preferably biodegradable. The body of this type makes it possible to self-separate the filtered particles without a particular technique or energy expenditure. The body according to the invention is especially suitable for the manufacture of filters mounted to filter the supply air in cars.

ITTO930107A 1992-02-25 1993-02-19 OPEN-PORE BODIES, STABLE IN THE DIMENSION. IT1260596B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH570/92A CH684273A5 (en) 1992-02-25 1992-02-25 Porous dimensionally stable body.

Publications (3)

Publication Number Publication Date
ITTO930107A0 ITTO930107A0 (en) 1993-02-19
ITTO930107A1 ITTO930107A1 (en) 1994-08-19
IT1260596B true IT1260596B (en) 1996-04-22

Family

ID=4190065

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO930107A IT1260596B (en) 1992-02-25 1993-02-19 OPEN-PORE BODIES, STABLE IN THE DIMENSION.

Country Status (4)

Country Link
CH (1) CH684273A5 (en)
DE (1) DE4304427A1 (en)
FR (1) FR2687588A1 (en)
IT (1) IT1260596B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521656A1 (en) * 1995-06-14 1996-12-19 New Ways Of Analytics Gmbh Carrier for a catalyst
DE19651734C2 (en) * 1996-12-12 1999-05-12 Dds Drug Delivery Service Ges Preparation in the form of a polymer-auxiliary compound and / or a polymer-active compound and process for its production and its use for the production of tablets and / or other larger matrix units
DE10200387B4 (en) * 2002-01-08 2009-11-26 Translumina Gmbh stent

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051320A (en) * 1964-01-13 1966-12-14 W.R. Grace & Co. Micro-porous polyethylene and a process for the manufacture thereof
FR2237667A1 (en) * 1973-07-18 1975-02-14 Equip Automobile Cie Fse Coating polyurethane foam air filters with adhesive bound fibres - to increase dust retention by e.g. automobile filters
JPS618107A (en) * 1984-06-22 1986-01-14 Mitsubishi Rayon Co Ltd Production of microporous membrane
US4702917A (en) * 1985-11-18 1987-10-27 Research Triangle Institute Porous bioabsorbable polyesters
DE3644588C1 (en) * 1986-12-27 1988-03-10 Ethicon Gmbh Implant and process for its manufacture
NL8703115A (en) * 1987-12-23 1989-07-17 Groningen Science Park BIODEGRADABLE POLYURETHANS, PREPARATIONS BASED ON THESE, AND POLYESTER POLYOL PREPOLYMERS.
JPH02261802A (en) * 1989-04-03 1990-10-24 Sumitomo Cement Co Ltd Preparation of porous chitinous material
NL9001642A (en) * 1990-07-19 1992-02-17 Stamicarbon Material prodn. for implant for treating damaged tissue - by shaping mixt. of biodegradable polymer, solvent, granulate and solvent for granulate, removing solvents and washing out granulate

Also Published As

Publication number Publication date
FR2687588A1 (en) 1993-08-27
ITTO930107A0 (en) 1993-02-19
ITTO930107A1 (en) 1994-08-19
DE4304427A1 (en) 1993-10-21
CH684273A5 (en) 1994-08-15

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Legal Events

Date Code Title Description
0001 Granted