EP2707435A1 - Compositions contenant du bitume modifiées par un polymère - Google Patents

Compositions contenant du bitume modifiées par un polymère

Info

Publication number
EP2707435A1
EP2707435A1 EP12719971.9A EP12719971A EP2707435A1 EP 2707435 A1 EP2707435 A1 EP 2707435A1 EP 12719971 A EP12719971 A EP 12719971A EP 2707435 A1 EP2707435 A1 EP 2707435A1
Authority
EP
European Patent Office
Prior art keywords
bitumen
comb polymer
group
aggregates
composition
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.)
Withdrawn
Application number
EP12719971.9A
Other languages
German (de)
English (en)
Inventor
Jörg ZIMMERMANN
Martin Hansson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sika Technology AG
Original Assignee
Sika Technology AG
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 Sika Technology AG filed Critical Sika Technology AG
Priority to EP12719971.9A priority Critical patent/EP2707435A1/fr
Publication of EP2707435A1 publication Critical patent/EP2707435A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • C08L95/005—Aqueous compositions, e.g. emulsions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2555/00—Characteristics of bituminous mixtures
    • C08L2555/20—Mixtures of bitumen and aggregate defined by their production temperatures, e.g. production of asphalt for road or pavement applications
    • C08L2555/22—Asphalt produced above 140°C, e.g. hot melt asphalt
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2555/00—Characteristics of bituminous mixtures
    • C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
    • C08L2555/50—Inorganic non-macromolecular ingredients
    • C08L2555/52—Aggregate, e.g. crushed stone, sand, gravel or cement
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2555/00—Characteristics of bituminous mixtures
    • C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
    • C08L2555/80—Macromolecular constituents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers

Definitions

  • the invention relates to the field of polymer-modified bituminous compositions, in particular asphalt compositions.
  • the invention relates to the use of polymers in bitumen-containing compositions and to a process for the preparation of polymer-modified bituminous compositions.
  • Asphalt refers to a mixture of bitumen and aggregates of natural or technical origin. Bitumen acts as a binder, which connects the aggregates to a mechanically stable and resilient body. Gravel, sand and / or aggregates are used in particular as aggregates. Asphalt is used especially in road construction or generally as a floor covering.
  • asphalt bitumen In the technical production of asphalt bitumen is liquefied, mixed with aggregates and compacted.
  • various processes are known, which differ in particular with regard to the processing temperature.
  • the best asphalt quality is generally achieved with so-called hot asphalt, which is usually processed at temperatures of 150-180 Q C. In such
  • Processing temperature as warm asphalt Processing temperature
  • Asphalt compositions generally have a number of disadvantages: for example, asphalts treated with wax or paraffin additives must be densified and discharged at sufficiently high temperatures to prevent premature crystallization of the additives.
  • Foamed asphalts which usually have a high water content of up to 30%, usually have a lower quality than hot asphalt.
  • bitumen-containing compositions improve the processability of bitumen-containing compositions and, in particular, to provide a more favorable preparation of qualitatively high-quality asphalt in terms of energy requirements.
  • a corresponding bitumen-containing compositions and a process for their preparation to be provided.
  • a flexible solution is to be found, which is also adaptable to different circumstances.
  • bituminous composition comprising the comb polymer KP according to claim 1 can be solved.
  • the comb polymer KP can significantly reduce the viscosity of bitumen, in particular liquefied bitumen. This in turn allows a significant reduction of
  • bituminous compositions Processing temperature of bituminous compositions, in particular of asphalt compositions.
  • processability of bituminous compositions can be greatly improved; on the other hand, the energy requirement in the case of processability of bituminous compositions can be reduced.
  • the comb polymers KP can also be produced in different chemical modifications and can thus be adapted to a wide variety of conditions.
  • bitumen refers in the present context in particular high molecular weight, colloid-disperse mixtures of various organic substances which are obtained in the treatment of petroleum.
  • suitable petroleum oils are, for example, high-sulfur, heavy Crude oils such as Arab Heavy, Kuwait, Iran Heavy, Urals, Kirkuk.
  • the bitumen can also come from natural deposits, eg from sedimentary rocks such as copper shale and from natural asphalt.
  • a first aspect of the invention relates to a bituminous composition
  • a bituminous composition comprising bitumen and a comb polymer KP containing
  • M is independently H + , an alkali metal ion, alkaline earth metal ion, a divalent or trivalent metal ion, an ammonium ion or an organic ammonium group,
  • each R u independently of the others for hydrogen or a
  • R 1 and R 2 independently of one another are a C 1 - to C 20 -alkyl group, -cycloalkyl group, -alkylaryl group or - [AO] n -R 4 ,
  • A is C 2 -C 4 -alkylene
  • R 4 is a C 2 -C 20 -alkyl group, cyclohexyl group or -alkylaryl group
  • n is 2-250
  • R 3 independently of one another are NH 2 , -NR 5 R 6 , -OR 7 NR 8 R 9 , where R 5 and R 6 are each independently
  • Acetoxyethyl- (CH 3 -CO-O-CH 2 -CH 2 -) or a hydroxy isopropyl- (HO-CH (CH 3 ) -CH 2 -) or a
  • Acetoxyisopropyl group (CH 3 -CO-O-CH (CH 3 ) -CH 2 -);
  • Nitrogen is a part of a morpholine or
  • R 7 is a C 2 -C 4 -alkylene group
  • R 8 and R 9 are each independently a C 1 to C 20 alkyl group, cycloalkyl group, alkylaryl group,
  • the sequence of the partial structural units S1, S2, S3 and S4 can be alternating, block-like or random. In principle, it is also possible that, in addition to the partial structural units S1, S2, S3 and S4, further structural units are present.
  • the comb polymer KP preferably has a proportion of 0.005-10 wt.%, In particular 0.05-5 wt.%, Particularly preferably 0.1-3 wt.%, Based on the bitumen present in the bitumen-containing composition. In particular, a proportion of water in the composition based on the bitumen at most 15 wt .-%, in particular at most 10 wt .-%, particularly preferably at most 5 wt .-%, even more preferably at most 3 wt .-%.
  • Composition is preferably at least 50% by weight
  • bitumen in the composition forms, in particular, the major proportion of the usual processing temperatures of
  • bituminous compositions in particular at most 200 ° C., in liquid form.
  • optional aggregates such as sand, gravel and / or aggregates are considered.
  • all liquefiable at a temperature of at most 200 C Q components of the bituminous composition are substantially homogeneously mixed with the bitumen before, this in particular when the composition is in a flowable state is present and / or at a temperature of 90-200 C.
  • substantially homogeneously mixed means, in particular, that the components liquefiable at a temperature of at most 200 ° C. are not present as dispersion, emulsion and / or foam.
  • bitumen-containing composition in a flowable state, in particular at a temperature of 90 - 200 Q C, a
  • bitumen-containing composition in a flowable state contains, for example, small amounts of water.
  • the comb polymer KP a glass transition temperature (T g) of -20 - 150 Q C, in particular from 40 to 140 Q C, particularly preferably 80 - 130 Q C has.
  • the comb polymer KP has one or more of the following features:
  • the radical R u is a methyl group, and / or
  • radical R v is hydrogen, and / or
  • R 2 is - [AO] n -R 4 , where A is in particular a mixture of C 2 - and C 3 -alkylene, R 4 is advantageously a methyl group and
  • n 20-70.
  • a weight-average molecular weight of the group - [AO] n -R 4 is advantageously 1 ⁇ 00 - 3 ⁇ 00 g / mol.
  • the molar ratio of the C 2 -alkylene units to the C 3 -alkylene units is in particular 25:75 to 75:25, in particular 40:60 to 60:40.
  • the comb polymer KP is in particular free of aromatic compounds and / or aromatic structural units.
  • a weight-average molecular weight (M w ) of the comb polymer KP is in particular 5 ⁇ 00 - 150 ⁇ 00 g / mol, in particular 1 0 ⁇ 00 - 100 ⁇ 00 g / mol.
  • the partial structural units S1, S2, S3, and S4 together preferably have a weight fraction of at least 50% by weight, in particular at least 90% by weight, very particularly preferably at least 95% by weight, on
  • bitumen-containing composition may optionally contain solid aggregates, the solid aggregates in particular containing sand, gravel and / or aggregates.
  • Composition in particular an asphalt composition.
  • bitumen-containing compositions in particular in a flowable state, the following composition: a proportion of bitumen of 2 - 20 wt .-%, a proportion of the comb polymer KP of 0.001 - 0.5 wt .-% and a content of aggregates of 80 - 98 wt. %, wherein in particular water has a content of at most 4 wt .-%.
  • the percentages by weight are based on the total mass of the bitumen-containing composition.
  • Asphalt compositions As has been shown, the comb polymers KP are particularly suitable for the following uses or purposes:
  • Processing temperature of a bitumen-containing composition, in particular an asphalt composition is a bitumen-containing composition, in particular an asphalt composition.
  • bitumen is in particular liquefied bitumen and / or the aggregates include or consist of sand, gravel and / or aggregates.
  • the present invention relates to a process for the preparation of a bitumen-containing composition, in particular a
  • Asphalt composition wherein in one process step a comb polymer KP, as defined above, is mixed into liquefied bitumen.
  • aggregates in particular sand, gravel and / or aggregates, can be mixed in addition to the comb polymer.
  • an asphalt composition is produced.
  • At least a portion of the comb polymer KP is premixed with the aggregates prior to mixing into the liquefied bitumen, and the premix thus produced is admixed with the bitumen.
  • Processing temperature of bituminous compositions can be further improved in some cases.
  • the comb polymer KP can thereby be optimally distributed in the bitumen-containing composition, which leads in particular to more homogeneous compositions.
  • all aggregates can be added only after the mixing of the comb polymer KP in the liquefied bitumen. As it has been shown, this may possibly facilitate the mixing of the aggregates with the bitumen, since the viscosity of the bitumen-containing composition is already reduced and, in general, the wettability of the aggregates is improved.
  • a first subset of the comb polymer KP is premixed with the aggregates before being mixed into the liquefied bitumen and a second subset
  • Subset of the comb polymer KP is mixed with the liquefied bitumen mixed. Subsequently, the aggregates are mixed with the blended first subset of comb polymer KP in the liquefied bitumen with the second subset of the blended comb polymer KP.
  • Weight ratio of the first subset of comb polymer KP to the second subset of comb polymer KP may be e.g. 5:95 - 95: 5, especially 40:60 - 60:40. Such a method may be good in terms of
  • the comb polymer KP is dissolved in an aqueous solution and / or mixed as an aqueous suspension in the liquefied bitumen and / or mixed with the aggregates.
  • the aggregates point into the liquefied bitumen during mixing
  • the preparation of the comb polymers KP is known in the art and can, for example, by free-radical polymerization of
  • the polycarboxylic acid of the formula (V) is esterified or amidated with the corresponding alcohols or amines (eg HO-R 1 , H 2 NR 2 , H-R 3 ) and then at most neutralized or partially neutralized (depending on Type of the residue M, for example with metal hydroxides or ammonia).
  • the polymer-analogous reaction Details of the polymer-analogous reaction are disclosed, for example, in EP 1 138 697 B1 on page 7 line 20 to page 8 line 50, as well as in its examples or in EP 1 061 089 B1 on page 4, line 54 to page 5 line 38 and in its the examples.
  • the comb polymer KP can be produced in a solid state of aggregation.
  • the Disclosure of these cited patents is hereby incorporated by reference in particular.
  • Corresponding comb polymers KP are also sold commercially by Sika für AG under the trade name series ViscoCrete®.
  • a comb polymer KP1 was prepared in a manner known per se by polymer-analogous reaction of polymethacrylic acid with alcohols of the HO-R 1 type and amines of the H 2 NR 2 type.
  • the structure of the comb polymer KP1 thus produced corresponds to the above-described comb polymer KP, wherein:
  • R u is a methyl group
  • the molar ratio of PEG1000-OCH 3 to PEG3000-OCH3 is 0.1 15: 0.138.
  • a first bituminous composition B1 was prepared as follows: Conventional road construction bitumen of the grade 160/200 (for example available from Skanska Sverige AB) was liquefied by heating and subsequently admixed with 5% by weight of the comb polymer KP1.
  • the comb polymer KP1 was present in the form of an aqueous solution (about 40% by weight of KP1 in water). After mixing the two components, the
  • Bituminous composition cooled to about 25 Q C.
  • a second bitumen-containing composition BV at about 25 Q C consisting of pure street burnet of the variety
  • Composition BV no comb polymer KP1.
  • the hardness of the two bituminous compositions was determined by needle penetration procedures under identical conditions.
  • the needle penetration was in each case carried out in accordance with the standard DIN EN 1426 at 25 ° C. using a standard needle, a standard weight of 100 g and for a period of 5 seconds. was determined thereby the
  • Comb polymer KP1 is able to significantly reduce the hardness of the bitumen. As has been shown, the sample B1 with comb polymer KP1 correspondingly has a lower softening point or a lower one
  • a first asphalt composition A1 was prepared by the asphaltene components (aggregates and bitumen of type 160/220) was heated to a temperature of 1 10 Q C in a first step. Subsequently, 5 wt .-% (based on the bitumen) were admixed comb polymer KP1 to the heated asphalt composition at a temperature of 1 10 Q C.
  • a second asphalt composition A2 was prepared substantially like the first asphalt composition A1, the
  • Asphalt components in the first step were heated up to 150 Q C.
  • the admixture of the comb polymer KP1 is carried out in accordance with a temperature of 150 C Q.
  • a fourth asphalt composition A4 was prepared. This essentially corresponds to the second one
  • Asphalt composition A2 but the addition of a comb polymer KP1 was also omitted.
  • the air content of the asphalt composition A1 corresponds approximately to the air content of the asphalt composition A4 (without KP1 and at a temperature of 150 Q C). It can be seen that the processing temperature of an asphalt composition due to the present invention comb polymers at constant

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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)

Abstract

L'invention concerne une composition contenant du bitume, en particulier une composition d'asphalte, comprenant du bitume ainsi qu'un polymère en peigne (KP). La présente invention concerne en outre l'utilisation d'un polymère en peigne (KP) pour la réduction de la température de traitement d'une composition contenant du bitume, ainsi que pour la réduction de la viscosité du bitume dans une composition contenant du bitume et pour l'amélioration de la mouillabilité d'agrégats dans une composition contenant du bitume. L'invention concerne en outre un procédé de préparation d'une composition contenant du bitume.
EP12719971.9A 2011-05-11 2012-05-09 Compositions contenant du bitume modifiées par un polymère Withdrawn EP2707435A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12719971.9A EP2707435A1 (fr) 2011-05-11 2012-05-09 Compositions contenant du bitume modifiées par un polymère

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11165703 2011-05-11
PCT/EP2012/058532 WO2012152828A1 (fr) 2011-05-11 2012-05-09 Compositions contenant du bitume modifiées par un polymère
EP12719971.9A EP2707435A1 (fr) 2011-05-11 2012-05-09 Compositions contenant du bitume modifiées par un polymère

Publications (1)

Publication Number Publication Date
EP2707435A1 true EP2707435A1 (fr) 2014-03-19

Family

ID=44572398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12719971.9A Withdrawn EP2707435A1 (fr) 2011-05-11 2012-05-09 Compositions contenant du bitume modifiées par un polymère

Country Status (2)

Country Link
EP (1) EP2707435A1 (fr)
WO (1) WO2012152828A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1017760B1 (fr) 1997-08-29 2002-11-20 Schümann Sasol GmbH Bitume ou asphalte pour realisation de tapis routier, tapis routier ainsi realise et procede de production de bitume ou d'asphalte
ES2154254T3 (es) * 1999-06-15 2004-11-01 Sika Schweiz Ag Polimeros dispersantes de cemento, de aplicaciones generales, para hormigon de alta fluidez y alta resistencia.
EP1138696A1 (fr) 2000-03-29 2001-10-04 Sika AG, vorm. Kaspar Winkler & Co. Polymères pour compositions dispersantes pour ciment
EP1348729A1 (fr) 2002-03-25 2003-10-01 Sika Schweiz AG Polymères en état changeant solide
EP1350813A1 (fr) * 2002-04-01 2003-10-08 Rohm And Haas Company Asphalte modifié par des polymères
EP2251376A1 (fr) * 2009-05-15 2010-11-17 Sika Technology AG Dispersions polymères aqueuses

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2012152828A1 *

Also Published As

Publication number Publication date
WO2012152828A1 (fr) 2012-11-15

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