WO1990010036A1 - Compositions adaptees pour etre utilisees dans la preparation de membranes d'etancheite et membranes obtenues - Google Patents

Compositions adaptees pour etre utilisees dans la preparation de membranes d'etancheite et membranes obtenues Download PDF

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Publication number
WO1990010036A1
WO1990010036A1 PCT/US1990/001136 US9001136W WO9010036A1 WO 1990010036 A1 WO1990010036 A1 WO 1990010036A1 US 9001136 W US9001136 W US 9001136W WO 9010036 A1 WO9010036 A1 WO 9010036A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
membranes
bitumens
oils
sealing
Prior art date
Application number
PCT/US1990/001136
Other languages
English (en)
Inventor
Guy Lys
Original Assignee
Mobil Oil Corporation
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 by Mobil Oil Corporation filed Critical Mobil Oil Corporation
Priority to JP50522390A priority Critical patent/JPH04507111A/ja
Publication of WO1990010036A1 publication Critical patent/WO1990010036A1/fr

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Classifications

    • 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

Definitions

  • the present invention concerns the preparation of sealing membranes; these sealing membranes are in the farm of films or sheets which comprise a sealing product, a filler and a
  • these films or sheets are wound on themselves and positioned on site by known processes, such as for example heat sealing and/or gluing.
  • sealing membranes involves the suitable choice of the constituents of the "sealing product". It has been found that this sealing product was advantageously to be obtained by mixing a "specific bitumen”, an SBS copolymer and a particular petroleum oil.
  • the present invention therefore firstly relates to the specific bitumens adapted to be used for the preparation of the sealing product intended for manufacturing the sealing membranes defined hereinabove.
  • the usable specific bitumens according to the invention are hard bitumens, of Newtonian character, derived from the treatment of the residues in vacuo by propane deasphalting and characterized by:
  • bitumens are obtained, in refinery, by semi-blowing and they present properties which differ greatly from those of the bitumens obtained by straight distillation of the same crudes.
  • Table I gives the physical characteristics of three bitumens (obtained from different crudes) that may be used a ⁇ xrrding to the invention and of the three corresponding bitumens obtained, from these same crudes, by straight
  • a block copolymer and a particular petroleum oil are therefore added to these specific bitumens.
  • the block c ⁇ polymers that may be used are block copolymers constituted by an alternate succession of a
  • thermoplastic homopolymer of styrene and of an elastomer obtained by polymerization of conjugated diene The preferred block copolymer is polystyrene-polybutadiene-polystyrene for which the polystyrene represents from 20 to 40% mass of the block
  • the typical copolymer is characterized by a
  • styrene/butadiene mass ratio of 30/70, a molecular weight of between 250,000 and 300,000 or a viscosity in solution of 20 Pa.s (if the viscosity of the dissolutions of 25% in mass of the SBS copolymer in toluene is expressed).
  • a particular petroleum oil which is prepared as follows: during the refining operations in the production of mineral oils, the distillation in vacuo of the reduced crude given petroleum cuts which are known as vacuum distillates. Said distillates are mixtures of mineral oils, aromatic oils, paraffins and waxes.
  • the refiner must, by solvent treatment methods, separate successively from the distillates, the aromatic oils (for example by a furfurol treatment), then the liquid paraffins and the waxes (for example by a treatment with methyl ethyl ketone) in order to confer to the mineral oils the required lubricant qualities.
  • oils are characterized by a viscosity at 100oC of 43 to 64 cSt, a flash point included between 280oC and 320oC.
  • Table 2 summarizes the typical physical characteristics of these specific oils rendering the mixture of the special bitumen and the SBS copolymer compatible.
  • bitumens selected may have different compositions, on account of their origin, like the aromatic oils, the proportions of these constituents for a given content of SBS copolymer must be adjusted in order to render the bitumens and copolymers perfectly compatible.
  • the proportion of aromatic oils to be used is high, since it is necessary to have in the mixture just enough aromatic oils to peptize the polymer and asphaltenes present in the mixture by physical adsorption, and to obtain a colloidal suspension of bitumen in the continuous polymer medium.
  • the solution to this problem therefore consists in carrying out a simple compatibility test which will enable any man skilled in the art, having a certain bitumen, a certain polymer and aromatic oil at his disposal, to adjust the relative. proportions of the mixture of bitumen and oil.
  • This test consists in intimately mixing the bitumen and the desired quantity of polymer, then adding to this mixture increasing quantities (5, 10, 20, 30 and 40% for example) of aromatic oils.
  • the homogeneous mixtures obtained are maintained at 165oC without stirring and, after 5 days of storage, the softening points of samples taken in the lower part and in the upper part of the mixtures are determined.
  • the appearance of noteworthy differences are more or less rapidly observed between the softening points of the upper and lower samples and, for a restricted range of concentrations of aromatic oils in the mixtures, these differences disappear.
  • bitumen of block copolymer and of the petroleum oil referenced hereinabove are as follows:
  • Table 5 mentions the typical characteristics of the products (binding agent having no filler and sheet) seen in the present invention so as to be certain that, after ageing, all these products surely satisfy the specification of the UEATC.
  • Indications A, B and C concern bitumens obtained from oils of various origins; indications A 1 , B 1 concern bitumens obtained from oils of the same origin as A, B, C, but prepared by straight distillation.
  • the different oils A, B, C, D, E came from various crude oils already mentioned in Table 1.
  • the "ball and ring" gradient is measured on samples taken from the top and bottom of a sample of binding agent stored for 5 days at 165°C; this gradient enables the compatibility of he various constituents of the product to be assessed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)

Abstract

L'invention concerne des bitumes spécifiques pouvant être utilisés en mélange avec des copolymères en bloc du type SBS, ainsi que des huiles permettant la préparation de membranes d'étanchéité, caractérisés en ce qu'ils sont des bitumes durs de caractère newtonien dérivés du traitement de résidus in vacuo par désasphaltage au propane. Ils ont une viscosité comprise entre 560 et 850 s Saybolt furol à 135°C, ils présentent un point de ramollissement de ''sphère et d'anneau'' compris entre 65 et 74°C, ils ont une pénétration d'aiguille à 25°C de 10 à 20 dixièmes de millimètre, et une teneur en asphaltène comprise entre 20 et 35 % en poids. L'invention concerne également des mélanges que l'on peut utiliser pour préparer des membranes d'étanchéité, ainsi que les membranes ainsi obtenues.
PCT/US1990/001136 1989-02-27 1990-02-27 Compositions adaptees pour etre utilisees dans la preparation de membranes d'etancheite et membranes obtenues WO1990010036A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50522390A JPH04507111A (ja) 1990-02-27 1990-02-27 シール膜製造用組成物およびその膜

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902523A FR2643643B1 (fr) 1989-02-27 1989-02-27 Compositions utilisables pour la preparation de membranes d'etancheite et membranes obtenues
FR89/02523 1989-02-27

Publications (1)

Publication Number Publication Date
WO1990010036A1 true WO1990010036A1 (fr) 1990-09-07

Family

ID=9379162

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/001136 WO1990010036A1 (fr) 1989-02-27 1990-02-27 Compositions adaptees pour etre utilisees dans la preparation de membranes d'etancheite et membranes obtenues

Country Status (3)

Country Link
AU (1) AU5344390A (fr)
FR (1) FR2643643B1 (fr)
WO (1) WO1990010036A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709758A1 (fr) * 1993-09-09 1995-03-17 Total Raffinage Distribution Compositions bitume/polymère, leur procédé de préparation et leurs applications.
FR2729672A1 (fr) * 1995-01-25 1996-07-26 Total Raffinage Distribution Compositions bitume-polymere, leur procede de preparation et leurs applications
US5703148A (en) * 1993-09-09 1997-12-30 Total Raffinage Distribution S.A. Asphalt-polymer compositions, process for making same and uses thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5837756A (en) * 1997-05-28 1998-11-17 The Goodyear Tire & Rubber Company Polymer for asphalt cement modification
FR2787115B1 (fr) * 1998-12-15 2001-02-23 Total Raffinage Distribution Liants bitumineux modifies a haute cohesion et leurs utilisations

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2017264A1 (en) * 1968-09-03 1970-05-22 Shell Int Research Bitumen compsns. - contg. a thermoplastic elastomeric block copolymer
US4637946A (en) * 1985-11-18 1987-01-20 Owens-Corning Fiberglas Corporation Road repair membrane

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2017264A1 (en) * 1968-09-03 1970-05-22 Shell Int Research Bitumen compsns. - contg. a thermoplastic elastomeric block copolymer
US4637946A (en) * 1985-11-18 1987-01-20 Owens-Corning Fiberglas Corporation Road repair membrane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709758A1 (fr) * 1993-09-09 1995-03-17 Total Raffinage Distribution Compositions bitume/polymère, leur procédé de préparation et leurs applications.
EP0645433A1 (fr) * 1993-09-09 1995-03-29 Total Raffinage Distribution S.A. Procédé de préparation de compositions bitume/polymère, compositions obtenues par ce procédé et leurs applications
US5703148A (en) * 1993-09-09 1997-12-30 Total Raffinage Distribution S.A. Asphalt-polymer compositions, process for making same and uses thereof
FR2729672A1 (fr) * 1995-01-25 1996-07-26 Total Raffinage Distribution Compositions bitume-polymere, leur procede de preparation et leurs applications
EP0728815A1 (fr) * 1995-01-25 1996-08-28 Total Raffinage Distribution S.A. Compositions bitume-polymère, leur procédé de préparation et leurs applications

Also Published As

Publication number Publication date
AU5344390A (en) 1990-09-26
FR2643643A1 (fr) 1990-08-31
FR2643643B1 (fr) 1992-10-30

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