GB2318121A - Bituminous compositions and a process for their preparation - Google Patents
Bituminous compositions and a process for their preparation Download PDFInfo
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- GB2318121A GB2318121A GB9721350A GB9721350A GB2318121A GB 2318121 A GB2318121 A GB 2318121A GB 9721350 A GB9721350 A GB 9721350A GB 9721350 A GB9721350 A GB 9721350A GB 2318121 A GB2318121 A GB 2318121A
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- United Kingdom
- Prior art keywords
- bitumen
- bituminous composition
- composition according
- range
- penetration index
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title abstract description 15
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 239000010426 asphalt Substances 0.000 claims abstract description 41
- 230000035515 penetration Effects 0.000 claims abstract description 19
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 17
- 229920001400 block copolymer Polymers 0.000 claims description 12
- 150000001993 dienes Chemical class 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical group C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 abstract 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 abstract 1
- 229920002633 Kraton (polymer) Polymers 0.000 description 20
- -1 poly(styrene) Polymers 0.000 description 16
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 8
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 238000007664 blowing Methods 0.000 description 7
- 239000000178 monomer Substances 0.000 description 7
- 229920002223 polystyrene Polymers 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000005227 gel permeation chromatography Methods 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- SDJHPPZKZZWAKF-UHFFFAOYSA-N 2,3-dimethylbuta-1,3-diene Chemical compound CC(=C)C(C)=C SDJHPPZKZZWAKF-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- AHAREKHAZNPPMI-AATRIKPKSA-N (3e)-hexa-1,3-diene Chemical compound CC\C=C\C=C AHAREKHAZNPPMI-AATRIKPKSA-N 0.000 description 1
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- APQIUTYORBAGEZ-UHFFFAOYSA-N 1,1-dibromoethane Chemical compound CC(Br)Br APQIUTYORBAGEZ-UHFFFAOYSA-N 0.000 description 1
- OEVVKKAVYQFQNV-UHFFFAOYSA-N 1-ethenyl-2,4-dimethylbenzene Chemical compound CC1=CC=C(C=C)C(C)=C1 OEVVKKAVYQFQNV-UHFFFAOYSA-N 0.000 description 1
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- WAEOXIOXMKNFLQ-UHFFFAOYSA-N 1-methyl-4-prop-2-enylbenzene Chemical group CC1=CC=C(CC=C)C=C1 WAEOXIOXMKNFLQ-UHFFFAOYSA-N 0.000 description 1
- IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical compound C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- VIZORQUEIQEFRT-UHFFFAOYSA-N Diethyl adipate Chemical compound CCOC(=O)CCCCC(=O)OCC VIZORQUEIQEFRT-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- KTQYJQFGNYHXMB-UHFFFAOYSA-N dichloro(methyl)silicon Chemical compound C[Si](Cl)Cl KTQYJQFGNYHXMB-UHFFFAOYSA-N 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000005048 methyldichlorosilane Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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
Landscapes
- 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)
Abstract
The invention provides bituminous compositions comprising a bitumen component having a penetration index (PI) of more than 7 and a thermoplastic rubber in an amount of 5 %w or more, based on total composition; a process for their preparation; and the use of such bituminous compositions in industrial applications. In the examples the thermoplastic rubber is a styrene-butadiene-styrene block polymer.
Description
BITUMINOUS COMPOSITIONS AND A PROCESS
FOR THEIR PREPARATION
The present invention relates to bituminous compositions, a process for their preparation and the use of them in industrial applications, in particular roofing applications.
Bitumen has developed continually to meet everincreasing performance demands from for instance building constructors. Advances in building techniques necessitate the development of very high performance roofing felt systems. Such roofing felt systems need to be sufficiently flexible, elastic and resistant to permanent deformation at the whole service temperature range to accomodate the movement without losing their waterproofing performance. With the term 'service temperature range' is meant the temperature difference between the flow temperature and the cold bend temperature (according to DIN requirements) as is well appreciated in the art.
It will be understood therefore that much research has been directed to the development of bitumens having an increased service temperature range, meaning that they can be applied satisfactorily over a larger temperature range.
A known technique to improve the performance of a bitumen comprises modifying the bitumen by incorporating into it high levels of a thermoplastic rubber. For instance, by adding twelve to fourteen percent of a thermoplastic rubber to a bitumen, a service temperature range of 120 "C can be realised.
Surprisingly, it has now been found that bituminous compositions can be prepared having a high service temperature range, i.e. a service temperature range well above 120 C, and in addition a very attractive low high temperature viscosity.
These penetration bituminous compositions comprise a high penetration index (PI) bitumen and a relatively large amount of an thermoplastic rubber.
Accordingly, the present invention provides a bituminous composition comprising a bitumen component having a penetration index (PI) of more than 7 and a thermoplastic rubber in an amount of 5 %w or more, based on total composition.
These bituminous compositions are especially of interest since they can be applied over a wide range of temperatures and they display an excellent workability at coating temperatures, due to their low high temperature viscosity.
As will be appreciated by the skilled person in the art, the value of the penetration index (PI) can be derived from penetration measurements at two temperatures, T1 and T2 , using the equation:
log pen T1 - log pen T2 1 20 - PI = x T1 - T2 50 10 + PI Preferably, the bituminous composition according to the present invention comprises a bitumen component having a penetration index of at least 9, more preferably in the range of from 9 to 11.
The bituminous composition according to the present invention has preferably a penetration index of at least 9, more preferably in the range of from 9 to 11.
Suitably, the bituminous composition has a softening point (as measured by ASTM D 36) in the range of from 110 to 140 OC, preferably in the range of from 120 to 1300C.
Bituminous compositions having such a relatively high softening point in combination with such a high penetration index display more attractive low and high temperature properties when compared with conventional polymer-bitumen blends.
The bitumen composition comprises a thermoplastic rubber.
Preferably, the thermoplastic rubber is present in an amount in the range of from 5 to 12 %w, based on total composition. More preferably, the thermoplastic rubber is present in an amount in the range of from 6 to 10 %w, based on total composition.
Suitably, the bitumen composition may comprise one or more different types of thermoplastic rubbers.
Although a wide range of thermoplastic rubbers can suitably be used in accordance with the present invention, the preferred thermoplastic rubbers comprise optionally hydrogenated block copolymers which comprise at least two terminal poly(monovinylaromatic hydrocarbon) blocks and at least one central poly(conjugated diene) block.
Preferably, block copolymer constituents are selected from the group consisting of those of the formulae A(BA)m or (AB)n X, wherein A represents a
n block copolymer of predominantly poly(monovinylaromatic hydrocarbon), wherein B represents a block of predominantly poly(conjugated diene), wherein X represents the residue of a multivalent coupling agent and wherein n represents an integer 2 1, preferably 2 2, and m represents an integer 2 1, preferably n is 1.
More preferably, the blocks A represent predominantly poly(styrene) blocks and the B blocks represent predominantly poly(butadiene) blocks or predominantly poly(isoprene) blocks. Multivalent coupling agents to be used include those commonly known in the art, for example dibromoethane, silicon tetrachloride, diethyl adipate, divinylbenzene, dimethyldichlorosilane, methyl dichlorosilane.
Particularly preferred is the use of non-halogen containing coupling agents, for example gammaglycidoxypropyltrimethoxysilane (EPON 825), and diglycidylether of bisphenol A.
With the term "predominantly" is meant that the respective blocks A and B are mainly derived from monovinyl aromatic hydrocarbon monomers and conjugated diene monomers, which monomers may be mixed with other structurally related or non-related co-monomers, e.g.
monovinyl aromatic hydrocarbon monomers as main component and small amounts (up to 10%) of other monomers or butadiene mixed with isoprene or small amounts of styrene.
Suitable monovinyl aromatic hydrocarbons include styrene, o-methylstyrene, p-methylstyrene, p-tertstyrene, 2,4-dimethylstyrene, a-methylstyrene, vinylnaphthalene, vinyltoluene and vinylxylene, or mixtures thereof of which styrene is the most preferred.
Suitable conjugated dienes include those having from 4 to 8 carbon atoms, for example 1,3-butadiene, 2methyl-1,3-butadiene (isoprene), 2,3-dimethyl-1,3butadiene, 1,3-pentadiene and 1,3 hexadiene. Mixtures of such dienes may also be used. Preferred comjugated dienes are 1,3-butadiene and isoprene, with 1,3butadiene the most preferred.
More preferably, the block copolymers contain pure poly(styrene), pure poly(isoprene) or pure poly(butadiene) blocks, of which the poly(isoprene) or poly(butadiene) blocks may be selectively hydrogenated to at most a residual ethylenic unsaturation of 20%, more preferably less than 5% of its original unsaturation content prior to hydrogenation.
Preferably, however, the block copolymers are not selectively hydrogenated. Most preferably, the applied block copolymer has the structure ABA, wherein A has an apparent molecular weight of from 3000 to 100,000, preferably from 5000 to 20,000 and the diblocks AB have an apparent molecular weight in the range of from 100,000 to 170,000.
With the term "apparent molecular weight" as used throughout the specification is meant the molecular weight of a polymer, as measured with gel permeation chromatography (GPC) using poly(styrene) calibration standards.
The originally prepared poly(conjugated diene) blocks usually contain from 5 to 65 mol% vinyl groups, originating from 1,2 polymerisation relative to the conjugated diene molecules, and preferably a vinyl content from 10 to 55%, and more preferably a vinyl content from 25 to 55%.
The complete block copolymer to be used according to the present invention, is normally containing polymerised vinyl aromatic monomers in an amount of from 10 to 60% by weight and preferably from 15 to 45% by weight.
The apparent molecular weight of the total block copolymer will normally be in the range of from 100,000 to 350,000 and preferably in the range of from 150,000 to 200,000.
As examples of suitable pure block copolymers can be mentioned KRATON G-1651, KRATON G-1654, KRATON G1657, KRATON G-1650, KRATON G-1701, KRATON D-1101,
KRATON D-1102, KRATON D-1107, KRATON D-11l1, KRATON D1116, KRATON D-1117, KRATON D-1118, KRATON D-1122, KRATON D-1135X, KRATON D-1184, KRATON D-1144X, KRATON
D-1300X, KRATON D-4141 and KRATON D-4158 (KRATON is a trademark).
The bitumen component to be used in accordance with the present invention may be derived from a residue from distillation of crude oil, a cracked residue, an extract of a crude oil, a bitumen derived from propane bitumen, butane bitumen, pentane bitumen or mixtures thereof. Other suitable bitumens from which the bitumen component may be derived include mixtures of the above bitumens with extenders (fluxes) such as petroleum extracts, e.g. aromatic extracts, distillates or residues. Such bitumens or residues suitably have a penetration index in the range of from -2 to 0.
Normally, the bitumen component is obtained by subjecting such bitumen or residue to a blowing process, preferably a catalytic blowing process.
Suitable blowing catalysts to be used in such catalytic blowing process include those taught in the art such as ferric chloride, phosphorous pentoxide, aluminium chloride, boric acid and phosphoric acid.
Preferably use is made of phosphoric acid. Normally use is made of less than 2.5 %w of the catalyst, based on total mixture. Blowing conditions include those taught in the art.
Fillers such as carbon black, silica and calcium carbonate, stabilisers, antioxidants, pigments, and solvents are known to be useful in bitumen compositions and can be incorporated in the bitumen compositions of this invention in concentrations taught in the art.
The present invention further relates to a process for preparing any of the present bituminous compositions comprising mixing a bitumen component as defined hereinabove at elevated temperature with 5 %w or more of a thermoplastic rubber, based on total mixture.
Suitably, the present process is carried out at a temperature in the range of from 160 to 220 "C.
Preferably, the process according to the present invention is carried out at a temperature in the range of from 170 to 190 OC.
The process may be carried out at ambient pressure or elevated pressure. Normally, however, it will be carried out at ambient pressure.
Suitably, the present process is carried out over a period of time of less than 6 hours, preferably less than 2 hours.
The present invention still further provides the use of a bitumen composition as described hereinbefore in industrial applications.
The present invention will now be illustrated by means of the following Examples.
Example 1
A bitumen composition in accordance with the present invention was prepared as follows.
A bitumen having a penetration index of 9 was mixed at a temperature of 180 OC and for 1 hour with 8% by weight of a polystyrene-polybutadiene-polystyrene block copolymer, based on total bitumen composition. The bitumen component was prepared by subjecting a bitumen prepared from a crude oil to a catalytic blowing process. The block copolymer had a 30 %w styrene content and a number avergae molecular weight of 103,000 as measured by GPC with a polystyrene standard.
The main properties of the bituminous composition so obtained are shown in Table 1.
Example 2
For reasons of comparison a bitumen composition was prepared in a similar manner as described in Example 1, except that a bitumen component was used having a penetration index of 5, which was prepared by subjecting a bitumen prepared from a crude oil to a catalytic blowing process and adding a flux to the blown bitumen so obtained. The main properties of the bituminous composition so obtained are shown in Table 1.
Example 3
For reasons of comparison a bitumen composition was prepared in a similar manner as described in Example 2, except that the bitumen component had a penetration index of 6. The main properties of the bituminous composition so obtained are shown in Table 1.
Table 1
Example 1 2 3 pen (250C), dmm 57 50 57 R & B, OC 129.5 128 127 PI 9.4 8.9 9.2 Fraass breaking point, OC -35 -30 -35 DIN flow, OC 115 115 1125 Service temperature range 150 145 160 Dyn. viscosity (1800C),mPa.s 6500 10718 9147 It will be clear from Table 1 that the present invention provides a bituminous composition having a substantially similar service temperature range and an improved high temperature viscosity (Example 1) when compared with bituminous compositions falling just outside the scope of the present invention (Examples 2 and 3). The finding that the present bitumen composition displays such an attractive low high temperature viscosity is especially surprising since the skilled person would expect that a bitumen component having such a higher penetration index would rather yield a bituminous composition having a less attractive (lower) high temperature viscosity.
Claims (11)
1. Bituminous composition comprising a bitumen component having a penetration index (PI) of more than 7 and a thermoplastic rubber which is present in an amount of 5 %w or more, based on total composition.
2. Bituminous composition according to claim 1, wherein the bitumen component has a penetration index of at least 9.
3. Bituminous composition according to claim 1 or 2, wherein the thermoplastic rubber is present in an amount in the range of from 5 to 12 tw, based on total composition.
4. Bituminous composition according to any one of claims 1 to 3 having a penetration index of at least 9.
5. Bituminous composition according to any one of claims 1 to 4 having a softening point in the range of from 110 to 1400C (as measured by ASTM D 36).
6. Bituminous composition according to any one of claims 1 to 5 having a penetration index in the range of from 9 to 11.
7. Bituminous composition according to any one of claims 1 to 6, wherein the bitumen component comprises catalytically blown bitumen.
8. Bituminous composition according to any one of claims 1 to 7, wherein the thermoplastic rubber comprises an optionally hydrogenated block copolymer which comprises at least two terminal poly(monovinylaromatic hydrocarbon) blocks and at least one central poly(conjugated diene) block.
9. Bituminous composition as claimed in any one of claims 1 to 8, substantially as described hereinbefore with reference to the non-comparative part of the
Examples.
10. A process for preparing a bituminous composition as claimed in any one of claims 1 to 9 comprising mixing at an elevated temperature a bitumen having a penetration index of more than 7 with a thermoplastic rubber which is present in an amount of at least 5 tw, based on total mixture.
11. Use of a bituminous composition as claimed in any one of claims 1 to 9 in industrial applications.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP96307439 | 1996-10-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9721350D0 GB9721350D0 (en) | 1997-12-10 |
| GB2318121A true GB2318121A (en) | 1998-04-15 |
Family
ID=8225123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9721350A Withdrawn GB2318121A (en) | 1996-10-11 | 1997-10-08 | Bituminous compositions and a process for their preparation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2318121A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1586606A1 (en) * | 2004-04-14 | 2005-10-19 | KRATON Polymers Research B.V. | An asphalt binder based on polymer modified bitumen, hot mix asphalts made thereof, and pavements made therefrom |
| WO2005100479A1 (en) * | 2004-04-14 | 2005-10-27 | Kraton Polymers Research B.V. | A polymer modified bitumen composition to be used in asphalt binders or roofing compositions |
| US7560503B2 (en) | 2004-06-03 | 2009-07-14 | Kraton Polymers U.S. Llc | Gels from high molecular weight block copolymers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246137A (en) * | 1990-07-16 | 1992-01-22 | Shell Int Research | Bituminous roofing composition |
| WO1997019997A2 (en) * | 1995-11-28 | 1997-06-05 | Shell Internationale Research Maatschappij B.V. | Bitumen compositions and a process for their preparation |
| WO1997019981A2 (en) * | 1995-11-28 | 1997-06-05 | Shell Internationale Research Maatschappij B.V. | Bitumen compositions and a process for their preparation |
| WO1997044397A1 (en) * | 1996-05-20 | 1997-11-27 | Shell Internationale Research Maatschappij B.V. | Bitumen compositions and a process for their preparation |
| WO1997044396A1 (en) * | 1996-05-20 | 1997-11-27 | Shell Internationale Research Maatschappij B.V. | Process for preparing bitument compositions |
-
1997
- 1997-10-08 GB GB9721350A patent/GB2318121A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246137A (en) * | 1990-07-16 | 1992-01-22 | Shell Int Research | Bituminous roofing composition |
| WO1997019997A2 (en) * | 1995-11-28 | 1997-06-05 | Shell Internationale Research Maatschappij B.V. | Bitumen compositions and a process for their preparation |
| WO1997019981A2 (en) * | 1995-11-28 | 1997-06-05 | Shell Internationale Research Maatschappij B.V. | Bitumen compositions and a process for their preparation |
| WO1997044397A1 (en) * | 1996-05-20 | 1997-11-27 | Shell Internationale Research Maatschappij B.V. | Bitumen compositions and a process for their preparation |
| WO1997044396A1 (en) * | 1996-05-20 | 1997-11-27 | Shell Internationale Research Maatschappij B.V. | Process for preparing bitument compositions |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1586606A1 (en) * | 2004-04-14 | 2005-10-19 | KRATON Polymers Research B.V. | An asphalt binder based on polymer modified bitumen, hot mix asphalts made thereof, and pavements made therefrom |
| WO2005100479A1 (en) * | 2004-04-14 | 2005-10-27 | Kraton Polymers Research B.V. | A polymer modified bitumen composition to be used in asphalt binders or roofing compositions |
| US7297741B2 (en) | 2004-04-14 | 2007-11-20 | Kraton Polymers U.S. Llc | Pressure sensitive adhesives from high molecular weight block copolymers having a high fraction of diblock copolymer |
| KR100830254B1 (en) | 2004-04-14 | 2008-05-16 | 크레이튼 폴리머즈 리서치 비.브이. | A polymer modified bitumen composition to be used in asphalt binders or roofing compositions |
| US7560503B2 (en) | 2004-06-03 | 2009-07-14 | Kraton Polymers U.S. Llc | Gels from high molecular weight block copolymers |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9721350D0 (en) | 1997-12-10 |
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