EP1528974A1 - Materiau insonorisant et son procede de production - Google Patents

Materiau insonorisant et son procede de production

Info

Publication number
EP1528974A1
EP1528974A1 EP03793726A EP03793726A EP1528974A1 EP 1528974 A1 EP1528974 A1 EP 1528974A1 EP 03793726 A EP03793726 A EP 03793726A EP 03793726 A EP03793726 A EP 03793726A EP 1528974 A1 EP1528974 A1 EP 1528974A1
Authority
EP
European Patent Office
Prior art keywords
rubber
sound
particles
insulating material
pur
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Withdrawn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
EP03793726A
Other languages
German (de)
English (en)
Inventor
Hans Rudolf Czerny
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.)
Carcoustics Techconsult GmbH
Original Assignee
Carcoustics Tech Center GmbH
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 Carcoustics Tech Center GmbH filed Critical Carcoustics Tech Center GmbH
Publication of EP1528974A1 publication Critical patent/EP1528974A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/027—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles the foaming continuing or beginning when the mould is opened
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
    • C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Ethylene-propylene or ethylene-propylene-diene copolymers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/165—Particles in a matrix
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/206—Using expandable particles or beads as starting material
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0001—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties
    • B29K2995/0002—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties insulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/30—Polymeric waste or recycled polymer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2321/00—Characterised by the use of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the invention relates to a sound-insulating material, in particular for motor vehicles, which is made from thermoplastic rubber and PUR plastic, and to a method for producing such a material.
  • Heavy-duty molded parts or heavy-layer mats are used in motor vehicle technology, in particular for soundproofing the passenger compartment against engine noise and driving noise. Heavy-duty molded parts and heavy-duty mats are also used to remove noise (structure-borne noise insulation) from vibrating body parts.
  • the heavy layer material usually contains ethylene-propylene-diene rubber (EPDM). Heavy spar (BaS0 4 ) has proven itself as a heavy filler.
  • Conventional heavy layer material which is used for sound insulation in motor vehicles, in particular for the deadening of body parts, has a relatively high weight. This is disadvantageous in the effort to reduce the fuel consumption of motor vehicles by reducing the vehicle weight.
  • the object of the present invention is to provide a sound-insulating material of the type mentioned at the outset To create especially for the automotive industry, which has a relatively low weight with good sound-absorbing effect. Furthermore, an inexpensive method for producing such a material is to be specified.
  • the solution to this problem according to the invention is that the rubber and the PUR plastic are mixed with one another, the rubber forming a matrix in which a multiplicity of gas-filled, elastic hollow bodies are embedded.
  • thermoplastic rubber particles and PUR plastic particles are extruded with the addition of a blowing agent to form a foam-like mixed material, the blowing agent being added in the form of micro-hollow bodies containing blowing agent, which have a shell made of mixed polymer and expand under the influence of heat.
  • the invention creates a foamed heavy layer material, specifically a heavy layer material with a rubber matrix which contains expanded, elastic hollow bodies.
  • the material according to the invention is distinguished both by good sound insulation and sound damping properties and by a relatively low weight.
  • the rubber particles used are recycling material which is obtained by crushing old and / or waste material comprising EPDM rubber.
  • Recycled material for the PUR plastic particles can preferably also be used by crushing old and / or waste material containing PUR foam into pellets or flakes or the like. This conserves raw material resources and reduces raw material costs in the production of heavy layer material.
  • Fig. 1 is a schematic longitudinal sectional view of an extrusion device
  • Fig. 2 is a cross-sectional view of a portion of a heavy layer mat made of material according to the invention.
  • the sound-insulating material according to the invention can have various shapes. It can be used, for example, in the form of a mat, a molded part or a coating produced by injection molding, in particular injection molding.
  • An extrusion device 2 is used to produce the material according to the invention, which is generally designated 1 in FIG. 2.
  • the extrusion device essentially has the structure shown in FIG. 1.
  • the extrusion device 2 has a feed or filling zone 3 with a filling funnel 4, a transition and compression zone 5 Ejection zone 6 and a nozzle 7 as an extrusion tool.
  • the nozzle 7 can in particular be designed as a gap nozzle.
  • the nozzle 7 and the various zones 3, 5, 6 are provided with independently controllable heating devices 8, 9, 10, 11.
  • the extrusion device 2 is supplied with thermoplastic rubber particles, polyurethane plastic particles and a blowing agent via the filling funnel 4.
  • the thermoplastic rubber particles are recycling material in the form of pellets, which is obtained by crushing EPDM rubber-containing material.
  • the EPDM rubber particles fed to the extrusion device 2 preferably have an average grain size in the range from 2 to 8 mm.
  • the EPDM rubber particles contain heavy spar (BaS0 4 ) or another heavy filler.
  • the PUR plastic particles are preferably also recycling material. It is obtained by crushing PUR foam material and is in the form of pellets or flakes, which preferably have an average grain size in the range of 1 to 6 mm.
  • thermoplastic rubber particles and the polyurethane plastic particles can be obtained, for example, by comminuting sound-insulating composite components contained in end-of-life vehicles, which are usually designed as multi-layer acoustic spring-mass systems and have a polyurethane foam layer as acoustic spring and a heavy layer layer made of EPDM rubber have as an acoustic mass.
  • Micro-hollow bodies containing blowing agents are added as blowing agents, which have a gas-tight, highly elastic shell made of mixed polymer and expand under the action of heat.
  • the hollow micro-bodies are essentially spherical and have an average grain size in the range from 8 to 20 ⁇ m and a density in the range from 1000 to 1300 kg / m 3 in the unexpanded state.
  • the blowing agent is a liquid or gaseous hydrocarbon, for example isobutane.
  • the hollow micro-bodies expand under the influence of heat, their respective volume then being able to reach a multiple, for example more than 40 times their original volume.
  • the expansion of the hollow micro-bodies begins at a certain temperature. Typical expansion temperatures are in the range of, for example, 80 to 200 ° C.
  • the expanded hollow micro-bodies can be easily compressed and are so elastic that they can withstand multiple load or pressure changes without bursting their sheath.
  • the heating devices 8, 9, 10, 11 of the extrusion device 2 are controlled such that a temperature of 40 to 50 ° C. in the area of the feed zone 3 and a temperature of 110 to 130 ° C. in the area of the transition and compression zone 5 during the extrusion , a temperature of 120 to 150 ° C in the area of the discharge zone 6 and a temperature of 120 to 150 ° C in the area of the nozzle 7.
  • thermoplastic rubber particles, PUR plastic particles and hollow micro-bodies can be fed to the extrusion device 2 together as a mixture.
  • thermoplastic rubber particles, the PUR plastic particles and the propellant-containing hollow micro-bodies are fed to the extrusion device 2 in succession in separate batches.
  • the mixture fed to the extrusion device 2 or the extruded material preferably has the following composition:
  • thermoplastic rubber particles 70 to 99% by weight of thermoplastic rubber particles, 1 to 20% by weight of PUR plastic particles and 0.5 to 10% by weight of hollow micro-bodies containing blowing agent.
  • FIG. 2 A cross section of a section of the extruded material 1 is shown schematically in FIG. 2.
  • the oplastic EPDM rubber 12 and the PUR plastic 13 are mixed with one another in a substantially homogeneous manner, the rubber 12 forming a matrix in which a multiplicity of expanded, elastic hollow micro-bodies 14 are embedded.
  • the material 1 according to the invention thus represents a foamed one
  • Heavy layer material that predominantly has closed cells.
  • the density of the material 1 is in the range from 0.2 to 1.5 kg / cm 3 .
  • the density of the material 1 is preferably below 1.0 kg / cm 3 , and particularly preferably below 0.5 kg / c 3 .
  • Conventional, non-foamed heavy layer material has a density of typically approximately 1.8 kg / cm 3 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention concerne un matériau insonorisant ou un revêtement produit à partir de caoutchouc et de plastique polyuréthanne (PUR). Cette invention se rapporte également à un procédé de production dudit matériau. L'objectif de la présente invention est de réduire le poids du matériau insonorisant et de simultanément maintenir, voire améliorer sensiblement son effet insonorisant. A cet effet, le caoutchouc (12) et le plastique PUR (13) sont mélangés l'un à l'autre, le caoutchouc formant une matrice dans laquelle est insérée une pluralité de corps creux (14) élastiques remplis de gaz. Des particules de caoutchouc thermoplastique ainsi que des particules de plastique PUR auxquelles est ajouté un agent moussant sont extrudées de façon à former un matériau de mélange qui présente l'aspect d'une mousse. L'agent moussant ajouté se présente sous la forme de corps creux microscopiques qui contiennent un agent moussant.
EP03793726A 2002-08-13 2003-08-11 Materiau insonorisant et son procede de production Withdrawn EP1528974A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002137366 DE10237366A1 (de) 2002-08-13 2002-08-13 Schallisolierendes Material und Verfahren zu dessen Herstellung
DE10237366 2002-08-13
PCT/EP2003/008905 WO2004022298A1 (fr) 2002-08-13 2003-08-11 Materiau insonorisant et son procede de production

Publications (1)

Publication Number Publication Date
EP1528974A1 true EP1528974A1 (fr) 2005-05-11

Family

ID=30775292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793726A Withdrawn EP1528974A1 (fr) 2002-08-13 2003-08-11 Materiau insonorisant et son procede de production

Country Status (7)

Country Link
US (1) US20060052474A1 (fr)
EP (1) EP1528974A1 (fr)
JP (1) JP2006501323A (fr)
AU (1) AU2003266273A1 (fr)
DE (1) DE10237366A1 (fr)
MX (1) MXPA05001547A (fr)
WO (1) WO2004022298A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2006039379A (ja) * 2004-07-29 2006-02-09 Nishikawa Rubber Co Ltd 遮音性シート
JP5163297B2 (ja) * 2008-06-04 2013-03-13 横浜ゴム株式会社 道路橋用遮音部材
TWI504655B (zh) * 2009-04-10 2015-10-21 Saint Gobain Performance Plast 含有彈性體微粒之聲阻尼組合物
JP5525036B2 (ja) * 2009-04-10 2014-06-18 サン−ゴバン パフォーマンス プラスティックス コーポレイション 音響減衰組成物
CN102639620B (zh) 2009-11-20 2014-01-22 巴斯夫欧洲公司 含有微珠的树脂泡沫
DE102010035431A1 (de) 2010-08-26 2012-03-01 Entwicklungsgesellschaft für Akustik (EfA) mit beschränkter Haftung Breitbandiger Schallabsorber
US8937106B2 (en) 2010-12-07 2015-01-20 Basf Se Melamine resin foams with nanoporous fillers
CN107189405B (zh) * 2017-06-23 2020-06-19 华南理工大学 一种高耐磨橡塑共混发泡材料及其制备方法
BR112021025563A2 (pt) * 2019-12-30 2022-03-03 Pimsa Otomotiv Anonim Sirketi Composição de proteção sub-veicular
CN120926324B (zh) * 2025-09-22 2026-01-27 中国建筑西南设计研究院有限公司 一种复合型发泡材料填充中空螺旋排水管道及其制作方法

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US4556603A (en) * 1984-03-21 1985-12-03 Phillips Petroleum Company Method of making lightweight thermoplastic elastomer and product thereof
US5658656A (en) * 1992-01-10 1997-08-19 Minnesota Mining And Manufacturing Company Use of materials comprising microbubbles as acoustical barriers
US5432204A (en) * 1993-01-22 1995-07-11 Woodbridge Foam Corporation Foamed polymer and process for production thereof
WO1996000754A1 (fr) * 1994-06-30 1996-01-11 Minnesota Mining And Manufacturing Company Materiaux d'etancheite elastomeres en polyurethanes/uree
AU4708097A (en) * 1996-10-15 1998-05-11 Henkel Kommanditgesellschaft Auf Aktien Binding agent composition
US6384145B1 (en) * 1997-12-17 2002-05-07 Cooper Technology Services Llc Method for manufacture of elastomeric alloys using recycled rubbers
DE19812442C1 (de) * 1998-03-21 1999-10-28 B & F Formulier Und Abfuell Gm Doppelkammer-Kartusche zum Erzeugen eines 2-Komponenten Polyurethanschaums
JP3907332B2 (ja) * 1998-12-25 2007-04-18 横浜ゴム株式会社 水中吸音くさびの製造方法

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Title
See references of WO2004022298A1 *

Also Published As

Publication number Publication date
US20060052474A1 (en) 2006-03-09
DE10237366A1 (de) 2004-02-26
WO2004022298A1 (fr) 2004-03-18
AU2003266273A1 (en) 2004-03-29
JP2006501323A (ja) 2006-01-12
MXPA05001547A (es) 2005-05-05

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