CH505331A - Sepn of uniform density particles of dif- - ferent shape - Google Patents
Sepn of uniform density particles of dif- - ferent shapeInfo
- Publication number
- CH505331A CH505331A CH745067A CH745067A CH505331A CH 505331 A CH505331 A CH 505331A CH 745067 A CH745067 A CH 745067A CH 745067 A CH745067 A CH 745067A CH 505331 A CH505331 A CH 505331A
- Authority
- CH
- Switzerland
- Prior art keywords
- weight
- parts
- molecular weight
- polyisobutylene
- steel pipe
- Prior art date
Links
- 239000002245 particle Substances 0.000 title abstract 3
- 229920002367 Polyisobutene Polymers 0.000 claims description 18
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000010426 asphalt Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Classifications
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C09J123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4855—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by their physical properties, e.g. being electrically-conductive
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Sepn. of solid particles having the same or very similar densities but different shape-factors e.g. fibres and spheres is by suspending them in a liquid and imparting a flow velocity to the suspension. The velocity gradient is so large that turbulence is avoided and the particles which separate as a result of their shape when their velocity decreases below a specific value, are withdrawn at the position of minimum velocity.
Description
Verbundrohr, bestehend aus einem Stahlrohr und mehreren aussen aufgebrachten Kunststoffschichten
Die Erfindung betrifft ein Verbundrohr, welches aus einem Stahlrohr besteht, auf das mehrere Kunststoffschichten aufgebracht sind. Diese bestehen aus Poly äthylen. Das Stahlrohr ist mit der untersten Kunststoffschicht und die Kunststoffschichten sind miteinander durch Klebstoffschichten verbunden. Die Erfindung besteht darin, dass die Klebstoffschichten zwei Polyisobutylene mit unterschiedlichen Molekulargewichten enthalten, von denen das eine ein Molgewicht von etwa 15 000 und das andere ein Molgewicht von etwa 10 000 aufweist, wobei pro 100 Gewichtsteile des Polyisobutylens mit dem Molgewicht von etwa 10 000 höchstens 150 Gewichtsteile des Polyisobutylens mit dem Molgewicht von etwa 15 000 vorhanden sind.
Als besonders wirksam hat sich folgende Zusammensetzung ergeben:
120 Gew.-Teile Polyisobutylen mit dem Molgew.
von ca. 15 000
90 Gew.-Teile Polyisobutylen mit dem Molgew. von ca. 10 000
335 Gew.-Teile Bitumen (geblasen, umgefüllt, Erweichungspunkt + 800 bis + 90 0C Brechpunkt bei -20 OC)
455 Gew.-Teile Bitumen (ungebiasen ungefüllt, Erweichungspunkt +37 bis +44 C, Brechpunkt bei -15 OC).
Die besonderen Vorteile der erfindungsgemässen Klebstoffschicht bestehen darin, dass sie bei niedrigen Temperaturen nicht versprödet und innerhalb der Poly äthylenummantelung auftretende Spannungen abbaut.
Die Molekulargewichte werden nach der Formel Wsp/e 1Td =
1 1 + 0,28 ¯ 7Bp von Schulz-Blaschke bestimmt; Lösungsmittel Tetralin, 20 OC, c = 2,69 g/100 ml, Einheit der Konzentration ,/100 ml. Aus der so bestimmten Viskosität ss wird das Molekulargewicht in üblicher Weise nach Staudinger bestimmt.
PATENTANSPRUCH
Verbundrohr, bestehend aus einem mit mehreren Kunststoffschichten aus Polyäthylen überzogenen Stahlrohr, wobei die Kunststoffschichten mit dem Stahlrohr und miteinander durch je eine Klebstoffschicht verbunden sind, dadurch gekennzeichnet, dass die Klebstoff- schichten zwei Polyiosbutylene unterschiedlicher Molekulargewichte enthalten, und zwar ein Polyiosbutylen mit einem Molgewicht von etwa 15 000 und ein anderes mit einem#Molgewicht von etwa 10 000, wobei pro 100 Gewichtsteile des Polyisobutylens mit dem Molgewicht von etwa 10 000 höchstens 150 Gewichtsteile des Polyisobutylens mit dem Molgewicht von etwa 15 000 vorhanden sind.
UNTERANSPRUCH
Verbundrohr nach Patentanspruch, dadurch gekennzeichnet, dass die Klebstoffschichten folgende Zus am- mensetzung aufweisen:
120 Gew.-Teile Polyisobutylen, Molgewicht etwa 15 000
90 Gew.-Teile Polyisobutylen, Molgewicht etwa 10 000
335 Gew.-Teile Bitumen geblasen, ungefüllt, Erwei chungspunkt + 800 bis + 90 0C, Brechpunkt bei -20 0C
445 Gew.-Teile Bitumen, ungeblasen, ungefällt, Erweichungspunkt +37 bis + 44 0C, Brechpunkt bei -15 OC.
Mannesmann Aktiengesellschaft
Vertreter: Deriaz, Kfrker & Cie., Geneve
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
Composite pipe, consisting of a steel pipe and several plastic layers applied on the outside
The invention relates to a composite pipe which consists of a steel pipe on which several plastic layers are applied. These are made of polyethylene. The steel pipe is connected to the lowest plastic layer and the plastic layers are connected to one another by adhesive layers. The invention consists in that the adhesive layers contain two polyisobutylenes with different molecular weights, one of which has a molecular weight of about 15,000 and the other has a molecular weight of about 10,000, with per 100 parts by weight of the polyisobutylene with a molecular weight of about 10,000 at most 150 parts by weight of the polyisobutylene having a molecular weight of about 15,000 are present.
The following composition has proven to be particularly effective:
120 parts by weight of polyisobutylene with the molecular weight.
of approx. 15,000
90 parts by weight of polyisobutylene with the molecular weight. from approx. 10,000
335 parts by weight bitumen (blown, decanted, softening point + 800 to + 90 0C, breaking point at -20 OC)
455 parts by weight bitumen (unfilled, unfilled, softening point +37 to +44 C, breaking point at -15 OC).
The particular advantages of the adhesive layer according to the invention are that it does not become brittle at low temperatures and that it relieves stresses that occur within the polyethylene sheathing.
The molecular weights are calculated according to the formula Wsp / e 1Td =
1 1 + 0.28 ¯ 7 bp determined by Schulz-Blaschke; Solvent tetralin, 20 ° C., c = 2.69 g / 100 ml, unit of concentration, / 100 ml. The molecular weight is determined in the usual way according to Staudinger from the viscosity ss thus determined.
PATENT CLAIM
Composite pipe, consisting of a steel pipe covered with several plastic layers of polyethylene, the plastic layers being connected to the steel pipe and to each other by an adhesive layer each, characterized in that the adhesive layers contain two polyiosbutylenes of different molecular weights, namely a polyiosbutylene with a molecular weight of about 15,000 and another having a molecular weight of about 10,000, with at most 150 parts by weight of the polyisobutylene having a molecular weight of about 15,000 being present per 100 parts by weight of the polyisobutylene having the molecular weight of about 10,000.
SUBClaim
Composite pipe according to patent claim, characterized in that the adhesive layers have the following composition:
120 parts by weight of polyisobutylene, molecular weight about 15,000
90 parts by weight of polyisobutylene, molecular weight about 10,000
335 parts by weight of bitumen blown, unfilled, softening point + 800 to + 90 0C, breaking point at -20 0C
445 parts by weight bitumen, unblown, unprecipitated, softening point +37 to + 44 0C, breaking point at -15 OC.
Mannesmann Aktiengesellschaft
Representative: Deriaz, Kfrker & Cie., Geneve
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM0070318 | 1966-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH505331A true CH505331A (en) | 1971-03-31 |
Family
ID=7313407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH745067A CH505331A (en) | 1966-07-22 | 1967-05-26 | Sepn of uniform density particles of dif- - ferent shape |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT278452B (en) |
| BE (1) | BE701543A (en) |
| CH (1) | CH505331A (en) |
| DE (1) | DE1594173A1 (en) |
| NL (1) | NL6710069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2409076A1 (en) * | 1977-11-22 | 1979-06-15 | Soc Lab Sarl | IMPROVEMENTS IN METHODS AND APPARATUS FOR THE CENTRIFUGAL TREATMENT OF FLUIDS CONTAINING SUSPENDED IMPURITIES |
-
1966
- 1966-07-22 DE DE19661594173 patent/DE1594173A1/en active Pending
-
1967
- 1967-05-26 CH CH745067A patent/CH505331A/en not_active IP Right Cessation
- 1967-07-19 BE BE701543D patent/BE701543A/xx unknown
- 1967-07-20 NL NL6710069A patent/NL6710069A/xx unknown
- 1967-07-20 AT AT676567A patent/AT278452B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2409076A1 (en) * | 1977-11-22 | 1979-06-15 | Soc Lab Sarl | IMPROVEMENTS IN METHODS AND APPARATUS FOR THE CENTRIFUGAL TREATMENT OF FLUIDS CONTAINING SUSPENDED IMPURITIES |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6710069A (en) | 1968-01-23 |
| BE701543A (en) | 1968-01-02 |
| AT278452B (en) | 1970-02-10 |
| DE1594173A1 (en) | 1969-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |