FR2714140A1 - Flexible sheath in PVF3 and its application to metallic hoses. - Google Patents
Flexible sheath in PVF3 and its application to metallic hoses. Download PDFInfo
- Publication number
- FR2714140A1 FR2714140A1 FR9315235A FR9315235A FR2714140A1 FR 2714140 A1 FR2714140 A1 FR 2714140A1 FR 9315235 A FR9315235 A FR 9315235A FR 9315235 A FR9315235 A FR 9315235A FR 2714140 A1 FR2714140 A1 FR 2714140A1
- Authority
- FR
- France
- Prior art keywords
- sheath
- flexible
- pvf3
- application
- hoses
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/14—PVF, i.e. polyvinyl fluoride
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Insulated Conductors (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Details Of Indoor Wiring (AREA)
Abstract
L'invention concerne des gaines souples à base de polytrifluoroéthylène. Ces gaines peuvent être disposées autour d'un tube métallique flexible et être utilisées comme flexibles en mer.The invention relates to flexible sleeves based on polytrifluoroethylene. These sheaths can be arranged around a flexible metal tube and be used as flexible at sea.
Description
- 1 - 2714140- 1 - 2714140
GAINE SOUPLE EN PVF3 ET SON APPLICATION FLEXIBLE SHEATH IN PVF3 AND ITS APPLICATION
AUX FLEXIBLES METALLIQUESWITH METAL FLEXIBLES
La présente invention concerne une gaine souple en PVF3 et son The present invention relates to a flexible PVF3 sheath and its
application aux flexibles métalliques. application to metal hoses.
Il est courant d'utiliser des flexibles pour l'exploitation de pétrole et de gaz en mer. Ces flexibles sont constitués d'un tube flexible interne en acier, d'une gaine en matière plastique dont la fonction est d'assurer l'étanchéité aux pétroles et aux gaz et d'armatures métalliques. De tels flexibles sont par exemple écrits dans le It is common to use hoses for the exploitation of oil and gas at sea. These hoses consist of an internal flexible steel tube, a plastic sheath whose function is to ensure sealing to oils and gases and metal reinforcements. Such hoses are for example written in the
brevet européen EP 166 385.European patent EP 166 385.
Comme gaine thermoplastique d'étanchéité, on utilise des polyamides qui conviennent lorsque la température d'exploitation des fluides ne dépasse pas 80 à As thermoplastic sealing sheath, polyamides are used which are suitable when the operating temperature of the fluids does not exceed 80 to
1000 C.1000 C.
A plus haute température, par exemple, jusqu'à 130 ou 140 C, on utilise le polyfluorure de vinylidène. Mais ce polymère étant semi-cristallin et sa rigidité élevée, son utilisation n'est pas possible telle quelle dans une structure destinée à être enroulée et déroulée parfois à très basse température sans avoir recours à une At higher temperature, for example, up to 130 or 140 ° C., polyvinylidene fluoride is used. But this polymer being semi-crystalline and its high rigidity, its use is not possible as such in a structure intended to be wound and unwound sometimes at very low temperature without having to use a
plastification interne ou externe.internal or external plasticization.
Un exemple de plastification interne est donné dans le brevet EP 166 385 cité précédemment: on copolymérise le fluorure de vinylidène avec un monomère fluroré. On augmente ainsi la souplesse de la gaine mais on diminue généralement sa température d'utilisation, on augmente sa perméabilité aux gaz et constate une sensibilité accrue (par rapport à l'homopolymère) à l'éclatement en décompression brutale rendant son utilisation dangereuse pour certaines températures et pressions An example of internal plasticization is given in the patent EP 166 385 cited above: the vinylidene fluoride is copolymerized with a fluorinated monomer. This increases the flexibility of the sheath but generally decreases its temperature of use, increases its permeability to gases and notes an increased sensitivity (compared to the homopolymer) to bursting in sudden decompression making its use dangerous for some temperatures and pressures
de service élevées.high service.
L'utilisation de plastifiants externes est citée dans les brevets français 2 560 884, 2 592 655 et 2 618 791. Certains plastifiants rendent possible l'utilisation The use of external plasticizers is cited in French patents 2,560,884, 2,592,655 and 2,618,791. Certain plasticizers make it possible to use
du PVDF homopolymère lors de la manutention des flexibles en l'assouplissant. PVDF homopolymer when handling the hoses by softening it.
Mais en service, il est constaté que la gaine retrouve peu à peu sa rigidité d'origine par départ du plastifiant généralement très compatible avec le PVDF. Non seulement la rigidité augmente, mais également une fragilisation apparaît du fait de But in service, it is found that the sheath gradually regains its original rigidity by leaving the plasticizer generally very compatible with PVDF. Not only does the rigidity increase, but also a weakening appears due to
- 2 - 2714140- 2 - 2714140
la création de tensions internes dues au départ du plastifiant et la tendance au the creation of internal tensions due to the departure of the plasticizer and the tendency to
retrait empêché de la gaine.prevented removal of the sheath.
On a trouvé que tous ces inconvénients dûs à la nécessaire plastification interne ou externe du PVDF étaient supprimés pour l'utilisation d'un polymère comprenant des motifs trifluoroéthylène. La demanderesse a découvert qu'on pouvait faire des gaines (ou des tuyaux) particulièrement souples, en utilisant un It has been found that all of these drawbacks due to the necessary internal or external plasticization of PVDF were eliminated for the use of a polymer comprising trifluoroethylene units. The Applicant has discovered that particularly flexible sheaths (or pipes) can be made, using a
polymère comprenant des motifs trifluoroéthylène. polymer comprising trifluoroethylene units.
On obtient ainsi des gaines ayant une température d'utilisation très Sheaths are thus obtained having a very high operating temperature.
supérieure à celles réalisées en PVDF. De plus, la gaine est beaucoup plus souple. higher than those produced in PVDF. In addition, the sheath is much more flexible.
Outre le trifluoroéthylène (VF3), le polymère des gaines de l'invention peut comprendre aussi les restes des motifs chlorotrifluoroéthylène, tetrafluoroéthylène, In addition to trifluoroethylene (VF3), the polymer of the sheaths of the invention can also comprise the residues of the chlorotrifluoroethylene, tetrafluoroethylene units,
hexafluoropropène, fluorure de vinylidène, ou éthylène. hexafluoropropene, vinylidene fluoride, or ethylene.
On ne sortirait pas du cadre de l'invention en y ajoutant des charges, des We would not go beyond the scope of the invention by adding charges,
pigments ou même un peu de plastifiants du type ester ou sulfonamide. pigments or even a few plasticizers of the ester or sulfonamide type.
L'invention concerne aussi un tube métallique flexible recouvert d'une gaine The invention also relates to a flexible metal tube covered with a sheath
selon la présente invention.according to the present invention.
Le flexible obtenu est particulièrement utile pour le transport d'hydrocarbures liquides ou gazeux à température élevée. Ce flexible peut alors être recouvert de couches de protection telles que des caoutchoucs, des toiles The hose obtained is particularly useful for transporting liquid or gaseous hydrocarbons at high temperature. This hose can then be covered with protective layers such as rubbers, fabrics
métalliques ou textiles....metallic or textile ...
Pour le transport du gaz, on préfère que le polymère de la gaine soit For the transport of the gas, it is preferred that the polymer of the sheath is
essentiellement l'homopolymère du trifluoroéthylène. essentially the homopolymer of trifluoroethylene.
L'invention concerne aussi des câbles recouverts de la gaine de l'invention. The invention also relates to cables covered with the sheath of the invention.
Que ce soit les câbles ou les tubes flexibles, on peut recouvrir cette gaine Whether cables or flexible tubes, we can cover this sheath
par un procédé d'extrusion.by an extrusion process.
Le câble peut être un fil métallique ou un toron ou plusieurs torons formant The cable can be a metal wire or a strand or several strands forming
un câble métallique.a wire rope.
- 3 - 2714140- 3 - 2714140
ExemplesExamples
Autour d'un tube flexible d'acier de 32 mm de diamètre constitué de spires entre lesquelles se trouvent des creux et interstices permettant son articulation, on extrude une gaine thermoplastique de 5 mm d'épaisseur. Pour comparer l'aptitude à l'enroulement de différents matériaux constituant la gaine, on dispose du mode opératoire suivant: O10 Le tube gainé est placé sur deux supports fixes. Au moyen d'un galet de A 5 mm thick thermoplastic sheath is extruded around a 32 mm diameter flexible steel tube made up of turns between which there are hollows and interstices allowing its articulation. To compare the suitability for winding of different materials constituting the sheath, the following operating mode is available: O10 The sheathed tube is placed on two fixed supports. By means of a roller
cintrage de 75 mm de rayon, on appuie à équidistance des points d'appui du tube. bending with a radius of 75 mm, the support points of the tube are pressed equidistantly.
On applique sur le galet la pression nécessaire pour déformer le tube gainé et lui donner le rayon de courbure du galet. La hauteur d'enfoncement du galet indique l'aptitude à la déformation du flexible. La hauteur maximum est de 170 mm: elle correspond à l'enroulement parfait du tube gainé sur le galet. Si avant enroulement parfait du tube gainé il y a rupture, on note la hauteur. Plus elle est élevée, plus le The pressure necessary to deform the sheathed tube and give it the radius of curvature of the roller is applied to the roller. The drive-in height of the roller indicates the ability of the hose to deform. The maximum height is 170 mm: it corresponds to the perfect winding of the sheathed tube on the roller. If before perfect winding of the sheathed tube there is a break, note the height. The higher it is, the higher the
flexible est apte à la flexion.flexible is suitable for bending.
On effectue, de plus, le test à différentes températures. In addition, the test is carried out at different temperatures.
- 4 - 2714140- 4 - 2714140
Exemple IExample I
Hauteur d'enfoncement du galet avant rupture (en mm - 170 mm correspond au maximum) Echantillon i Il III IV Drive-in height of the roller before failure (in mm - 170 mm corresponds to the maximum) Sample i Il III IV
C 120 170 170 170 C 120 170 170 170
-30 C 80 150 100 160-30 C 80 150 100 160
Gaine 1: homopolymère de VF2 - Foraflon 1 000 de ELF ATOCHEM. Sheath 1: homopolymer of VF2 - Foraflon 1000 from ELF ATOCHEM.
Gaine Il: homopolymère de VF2 + 7,5 % en poids de N-butylbenzène Sheath II: homopolymer of VF2 + 7.5% by weight of N-butylbenzene
o10 sulfonamide.o10 sulfonamide.
Gaine III: copolymère de VF2 et d'hexafluoropropène dans le rapport Sheath III: copolymer of VF2 and hexafluoropropene in the ratio
molaire 95/5.molar 95/5.
Gaine IV: I'homopolymère de VF3.Sheath IV: the homopolymer of VF3.
- 5 - 2714140- 5 - 2714140
Exemple 2Example 2
On soumet les 4 tubes flexibles gainés à un vieillissement thermique The 4 sheathed flexible tubes are subjected to thermal aging
pendant 3 mois à 150 C. On effectue ensuite les tests comme décrit précédemment. for 3 months at 150 C. The tests are then carried out as described above.
Hauteur d'enfoncement du galet avant rupture (en mm - 170 mm correspond au maximum) Echantillon I il III IV C 100 90 Gaine fondue 170 inutilisable - 30 C 40 40 Gaine fondue 140 inutilisable Insertion height of the roller before rupture (in mm - 170 mm corresponds to the maximum) Sample I il III IV C 100 90 Melted sheath 170 unusable - 30 C 40 40 Melted sheath 140 unusable
-6- 2714140-6- 2714140
Exemple 3Example 3
Les 4 flexibles sont soumis à un vieillissement thermique pendant 3 mois à The 4 hoses are subjected to thermal aging for 3 months at
C. On effectue ensuite les tests comme décrits précédemment. C. The tests are then carried out as described above.
Hauteur d'enfoncement du galet avant rupture (en mmrn - 170 mm correspond au maximum) Echantillon I Il III IV C Gaines Gaines Gaines 160 inutilisables inutilisables inutilisables - 30 C fondues - fondues fondues - 110 déformées déformées déformées Drive-in height of the roller before failure (in mmrn - 170 mm corresponds to the maximum) Sample I Il III IV C Sheaths Sheaths Sheaths 160 unusable unusable unusable - 30 C melted - melted melted - 110 deformed deformed deformed
- 7 - 2714140- 7 - 2714140
Claims (4)
Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9315235A FR2714140B1 (en) | 1993-12-17 | 1993-12-17 | Flexible sheath in PVF3 and its application to metallic hoses. |
SE9404251A SE9404251L (en) | 1993-12-17 | 1994-12-07 | Flexible sheath of PVF3 and its use on metal hoses |
GB9425010A GB2284819B (en) | 1993-12-17 | 1994-12-12 | Flexible sheath and its application to flexible metal pipes and cables |
ITMI942500A IT1271733B (en) | 1993-12-17 | 1994-12-13 | PVF3 FLEXIBLE SHEATH AND ITS APPLICATION TO METAL FLEXIBLES |
BR9405112A BR9405112A (en) | 1993-12-17 | 1994-12-15 | Flexible polymer-based sheath, flexible metal tube, and cable covered with a sheath |
NO944863A NO944863L (en) | 1993-12-17 | 1994-12-15 | Flexible sheath based on polyfluoroethylene and its use |
DK143794A DK143794A (en) | 1993-12-17 | 1994-12-16 | Flexible sheath of PVF3 and use of such sheath for flexible metallic wires |
CA002138355A CA2138355A1 (en) | 1993-12-17 | 1994-12-16 | Flexible polytrifluoroethylene jacket and its application to metal hoses |
JP6313351A JP2803584B2 (en) | 1993-12-17 | 1994-12-16 | Flexible sheath made of PVF3 and its application to flexible metal tubes |
BE9401137A BE1009248A3 (en) | 1993-12-17 | 1994-12-16 | Duct flexible pvf3 and its application to metal flexible. |
DE4445083A DE4445083A1 (en) | 1993-12-17 | 1994-12-16 | Elastic sheaths made of poly (trifluoroethene), their manufacture and their use, especially for corrugated metal hoses |
FI945931A FI945931A (en) | 1993-12-17 | 1994-12-16 | Flexible, PVF3-based protective shell and its use in metal hoses |
KR1019940034679A KR950018074A (en) | 1993-12-17 | 1994-12-16 | Its use as soft exterior and soft metal tube made of PVF₃ |
AU81501/94A AU688413B2 (en) | 1993-12-17 | 1994-12-16 | Flexible sheath and its application to flexible metal pipes and cables |
CN94119528A CN1114932A (en) | 1993-12-17 | 1994-12-17 | Flexible sheath made of PVF3 and its application to flexible metal pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9315235A FR2714140B1 (en) | 1993-12-17 | 1993-12-17 | Flexible sheath in PVF3 and its application to metallic hoses. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2714140A1 true FR2714140A1 (en) | 1995-06-23 |
FR2714140B1 FR2714140B1 (en) | 1996-01-19 |
Family
ID=9454071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9315235A Expired - Fee Related FR2714140B1 (en) | 1993-12-17 | 1993-12-17 | Flexible sheath in PVF3 and its application to metallic hoses. |
Country Status (15)
Country | Link |
---|---|
JP (1) | JP2803584B2 (en) |
KR (1) | KR950018074A (en) |
CN (1) | CN1114932A (en) |
AU (1) | AU688413B2 (en) |
BE (1) | BE1009248A3 (en) |
BR (1) | BR9405112A (en) |
CA (1) | CA2138355A1 (en) |
DE (1) | DE4445083A1 (en) |
DK (1) | DK143794A (en) |
FI (1) | FI945931A (en) |
FR (1) | FR2714140B1 (en) |
GB (1) | GB2284819B (en) |
IT (1) | IT1271733B (en) |
NO (1) | NO944863L (en) |
SE (1) | SE9404251L (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9611668D0 (en) * | 1996-06-05 | 1996-08-07 | Balmoral Group | Pipe coating |
CN1100081C (en) * | 2000-08-01 | 2003-01-29 | 上海天臣新技术有限公司 | Antiforge pressure-sensitive marker of high-molecular porous compound film and its preparing process |
WO2010110129A1 (en) | 2009-03-23 | 2010-09-30 | ダイキン工業株式会社 | Fluororesin and riser pipe |
JP6766958B2 (en) | 2017-05-10 | 2020-10-14 | ダイキン工業株式会社 | Sheets, laminates, pipes, riser tubes and flow lines |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502288A1 (en) * | 1981-02-18 | 1982-09-24 | Kendall & Co | PROCESS FOR REVEATING A TUBE AND TUBE OBTAINED |
FR2560884A1 (en) * | 1984-03-06 | 1985-09-13 | Inst Francais Du Petrole | VINYLIDENE POLYFLUORIDE COMPOSITIONS WITH IMPROVED FLEXIBILITY AND USE THEREOF, IN PARTICULAR IN THE MANUFACTURE OF FLEXIBLE TUBES |
FR2592655A1 (en) * | 1986-01-07 | 1987-07-10 | Atochem | COMPOSITE BASED ON VINYLIDENE POLYFLUORIDE WITH IMPROVED HOLD IN CONTACT WITH HYDROCARBONS - APPLICATION TO THE MANUFACTURE OF TUBE FOR THE OIL INDUSTRY. |
FR2618791A1 (en) * | 1987-07-31 | 1989-02-03 | Inst Francais Du Petrole | POLYMER COMPOSITIONS COMPRISING VINYLIDENE POLYFLUORIDE AND AN ELASTOMER, THEIR PREPARATION AND USES THEREOF |
DE3928269A1 (en) * | 1988-08-26 | 1990-03-08 | Usui Kokusai Sangyo Kk | COATED METAL PIPE AND METHOD FOR THE PRODUCTION THEREOF |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2739246A1 (en) * | 1977-08-31 | 1979-03-15 | Siemens Ag | Wires with balloon insulation of polyester or fluorocarbon! - giving low dielectric constant and good stability |
JPS5951421B2 (en) * | 1978-01-24 | 1984-12-13 | 旭硝子株式会社 | Piping materials suitable for moist heat fluids |
JPS59177199A (en) * | 1983-03-26 | 1984-10-06 | Kurita Water Ind Ltd | Suppression of propagation of bacteria in piping |
JPS59200202A (en) * | 1983-04-27 | 1984-11-13 | Sumitomo Chem Co Ltd | Optical transmission fiber |
NO165612C (en) * | 1984-06-20 | 1991-03-06 | Furukawa Electric Co Ltd | FLEXIBLE COMPOSITION ROOM FOR TRANSPORTING A HIGH-TEMPERATURE FLUID. |
US4692381A (en) * | 1984-07-16 | 1987-09-08 | Pennwalt Corporation | Foamable polyvinylidene fluoride and methods |
JPS6374010A (en) * | 1986-09-18 | 1988-04-04 | Toray Ind Inc | Plastic optical fiber having good heat resistance |
JPH0640164B2 (en) * | 1987-04-22 | 1994-05-25 | セントラル硝子株式会社 | Heat resistant optical transmission fiber |
BE1006615A3 (en) * | 1993-01-25 | 1994-11-03 | Solvay | Polymer compositions intended for the cables manufacturing and pipes flexible and articles made therefrom. |
-
1993
- 1993-12-17 FR FR9315235A patent/FR2714140B1/en not_active Expired - Fee Related
-
1994
- 1994-12-07 SE SE9404251A patent/SE9404251L/en not_active Application Discontinuation
- 1994-12-12 GB GB9425010A patent/GB2284819B/en not_active Expired - Fee Related
- 1994-12-13 IT ITMI942500A patent/IT1271733B/en active IP Right Grant
- 1994-12-15 NO NO944863A patent/NO944863L/en unknown
- 1994-12-15 BR BR9405112A patent/BR9405112A/en active Search and Examination
- 1994-12-16 CA CA002138355A patent/CA2138355A1/en not_active Abandoned
- 1994-12-16 BE BE9401137A patent/BE1009248A3/en not_active IP Right Cessation
- 1994-12-16 DK DK143794A patent/DK143794A/en not_active Application Discontinuation
- 1994-12-16 DE DE4445083A patent/DE4445083A1/en not_active Withdrawn
- 1994-12-16 AU AU81501/94A patent/AU688413B2/en not_active Ceased
- 1994-12-16 FI FI945931A patent/FI945931A/en not_active Application Discontinuation
- 1994-12-16 JP JP6313351A patent/JP2803584B2/en not_active Expired - Lifetime
- 1994-12-16 KR KR1019940034679A patent/KR950018074A/en not_active Application Discontinuation
- 1994-12-17 CN CN94119528A patent/CN1114932A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502288A1 (en) * | 1981-02-18 | 1982-09-24 | Kendall & Co | PROCESS FOR REVEATING A TUBE AND TUBE OBTAINED |
FR2560884A1 (en) * | 1984-03-06 | 1985-09-13 | Inst Francais Du Petrole | VINYLIDENE POLYFLUORIDE COMPOSITIONS WITH IMPROVED FLEXIBILITY AND USE THEREOF, IN PARTICULAR IN THE MANUFACTURE OF FLEXIBLE TUBES |
FR2592655A1 (en) * | 1986-01-07 | 1987-07-10 | Atochem | COMPOSITE BASED ON VINYLIDENE POLYFLUORIDE WITH IMPROVED HOLD IN CONTACT WITH HYDROCARBONS - APPLICATION TO THE MANUFACTURE OF TUBE FOR THE OIL INDUSTRY. |
FR2618791A1 (en) * | 1987-07-31 | 1989-02-03 | Inst Francais Du Petrole | POLYMER COMPOSITIONS COMPRISING VINYLIDENE POLYFLUORIDE AND AN ELASTOMER, THEIR PREPARATION AND USES THEREOF |
DE3928269A1 (en) * | 1988-08-26 | 1990-03-08 | Usui Kokusai Sangyo Kk | COATED METAL PIPE AND METHOD FOR THE PRODUCTION THEREOF |
Also Published As
Publication number | Publication date |
---|---|
JPH07276523A (en) | 1995-10-24 |
SE9404251A0 (en) | 1995-06-18 |
FR2714140B1 (en) | 1996-01-19 |
GB9425010D0 (en) | 1995-02-08 |
NO944863L (en) | 1995-06-19 |
FI945931A (en) | 1995-06-18 |
DE4445083A1 (en) | 1995-06-22 |
AU688413B2 (en) | 1998-03-12 |
SE9404251D0 (en) | 1994-12-07 |
ITMI942500A1 (en) | 1996-06-13 |
GB2284819B (en) | 1997-11-19 |
DK143794A (en) | 1995-06-18 |
ITMI942500A0 (en) | 1994-12-13 |
CN1114932A (en) | 1996-01-17 |
BR9405112A (en) | 1995-08-08 |
KR950018074A (en) | 1995-07-22 |
AU8150194A (en) | 1995-06-22 |
CA2138355A1 (en) | 1995-06-18 |
SE9404251L (en) | 1995-06-18 |
NO944863D0 (en) | 1994-12-15 |
JP2803584B2 (en) | 1998-09-24 |
FI945931A0 (en) | 1994-12-16 |
IT1271733B (en) | 1997-06-04 |
BE1009248A3 (en) | 1997-01-07 |
GB2284819A (en) | 1995-06-21 |
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