ES2149392T3 - Procedimiento para producir una composicion de caucho vulcanizable con una carga de refuerzo a base de silice. - Google Patents

Procedimiento para producir una composicion de caucho vulcanizable con una carga de refuerzo a base de silice.

Info

Publication number
ES2149392T3
ES2149392T3 ES96102439T ES96102439T ES2149392T3 ES 2149392 T3 ES2149392 T3 ES 2149392T3 ES 96102439 T ES96102439 T ES 96102439T ES 96102439 T ES96102439 T ES 96102439T ES 2149392 T3 ES2149392 T3 ES 2149392T3
Authority
ES
Spain
Prior art keywords
rubber composition
degrees
procedure
silice
vullcanizable
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.)
Expired - Lifetime
Application number
ES96102439T
Other languages
English (en)
Inventor
Marco Nahmias
Robert Schrafft
Christa Joseph
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.)
Pirelli and C SpA
Pirelli Tyre SpA
Original Assignee
Pirelli Pneumatici SpA
Pirelli SpA
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 Pirelli Pneumatici SpA, Pirelli SpA filed Critical Pirelli Pneumatici SpA
Application granted granted Critical
Publication of ES2149392T3 publication Critical patent/ES2149392T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/823—Temperature control
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C08K5/548—Silicon-containing compounds containing sulfur
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

Abstract

EN UN PROCEDIMIENTO PARA LA PRODUCCION DE UNA COMPOSICION DE CAUCHO VULCANIZABLE QUE CONTIENE SILICE Y QUE TIENE UN BAJO CONTENIDO DE NEGRO DE CARBON, SE AÑADEN AL MENOS UNA SUSTANCIA DE RELLENO DE REFUERZO BASADA EN SILICE Y AL MENOS UN AGENTE DE ACOPLAMIENTO BASADO EN SILANO Y SE MEZCLAN BIEN CON OTROS INGREDIENTES DE LA COMPOSICION EN PASOS SUBSIGUIENTES, A UNA TEMPERATURA DE 165 (GRADOS) A 180 (GRADOS) C Y ENTRE 110 (GRADOS) Y 160 (GRADOS) C RESPECTIVAMENTE. LA COMPOSICION DE CAUCHO QUE SE OBTIENE TIENE UNA DISPERSION DE SILICE MEJORADA, UNAS CARACTERISTICAS FISICO-MECANICAS MEJORADAS Y UNA MEJOR CAPACIDAD DE ESTIRAMIENTO Y ES PARTICULARMENTE ADECUADA PARA LA FABRICACION DE BANDAS DE RODADURA DE NEUMATICOS CON UNA BAJA RESISTENCIA AL RODAMIENTO.
ES96102439T 1995-02-24 1996-02-19 Procedimiento para producir una composicion de caucho vulcanizable con una carga de refuerzo a base de silice. Expired - Lifetime ES2149392T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI950359A IT1274257B (it) 1995-02-24 1995-02-24 Procedimento per la produzione di una mescola di gomma vulcanizzabile con carica rinforzante a base di silice

Publications (1)

Publication Number Publication Date
ES2149392T3 true ES2149392T3 (es) 2000-11-01

Family

ID=11370685

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96102439T Expired - Lifetime ES2149392T3 (es) 1995-02-24 1996-02-19 Procedimiento para producir una composicion de caucho vulcanizable con una carga de refuerzo a base de silice.

Country Status (12)

Country Link
US (3) US5804636A (es)
EP (1) EP0728803B1 (es)
JP (1) JP3522437B2 (es)
KR (1) KR100457255B1 (es)
CN (1) CN1099440C (es)
AR (1) AR001017A1 (es)
BR (1) BR9600620A (es)
DE (1) DE69608829T2 (es)
ES (1) ES2149392T3 (es)
IT (1) IT1274257B (es)
TR (1) TR199600143A1 (es)
TW (1) TW416968B (es)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10175208A (ja) * 1996-10-18 1998-06-30 Bridgestone Corp シランカップリング剤配合ゴム組成物の練り方法
DE19653938A1 (de) * 1996-12-21 1998-06-25 Continental Ag Kautschukmischung für Laufstreifen von Fahrzeugreifen
US5872176A (en) 1997-07-11 1999-02-16 Bridgestone Corporation Addition of salts to improve the interaction of silica with rubber
US6384117B1 (en) 1997-07-11 2002-05-07 Bridgestone Corporation Processability of silica-filled rubber stocks
US6221943B1 (en) 1997-07-11 2001-04-24 Bridgestone Corporation Processability of silica-filled rubber stocks
US6369138B2 (en) 1997-07-11 2002-04-09 Bridgestone Corporation Processability of silica-filled rubber stocks with reduced hysteresis
US6525118B2 (en) 1997-07-11 2003-02-25 Bridgestone Corporation Processability of silica-filled rubber stocks with reduced hysteresis
US6228908B1 (en) 1997-07-11 2001-05-08 Bridgestone Corporation Diene polymers and copolymers incorporating partial coupling and terminals formed from hydrocarboxysilane compounds
US6313212B1 (en) 1997-09-25 2001-11-06 Pirelli Coordinamento Pneumatici S.P.A. Continuous process for producing semi-finished rubber products with a silica reinforcing filler, for tyres, and tyres thus produced
AU5161699A (en) * 1998-07-22 2000-02-14 Michelin Recherche Et Technique S.A. Coupling system (white filler/diene elastomer) based on polysulphide alkoxysilane, zinc dithiophosphate and guanidine derivative
AU5038799A (en) * 1998-07-22 2000-02-14 Michelin Recherche Et Technique S.A. Coupling system (white filler/diene elastomer) based on polysulphide alkoxysilane, enamine and guanidine derivative
DE60002374T2 (de) * 1999-02-11 2004-02-26 Société de Technologie Michelin Verbesserung der Lebensdauer eines Radialluftreifen durch Verwendung von bestimmten kohäsiven Zusammensetzungen mit geringer Hysterese
US6864310B2 (en) 1999-04-01 2005-03-08 Pirelli Pneumatici S.P.A. Process for manufacturing a tire compound
WO2000059699A1 (en) * 1999-04-01 2000-10-12 Pirelli Pneumatici S.P.A. Process for producing a silica-reinforced rubber compound
GB9918291D0 (en) * 1999-08-03 1999-10-06 Croda Int Plc Cold sealable adhesive
US6512035B1 (en) 2000-05-15 2003-01-28 Bridgestone Corporation Processability of silica-reinforced rubber containing a monofunctional alkyl tin compound
US6590017B1 (en) 2000-05-15 2003-07-08 Bridgestone Corporation Processability of silica-reinforced rubber containing an amide compound
IT1320206B1 (it) 2000-06-20 2003-11-26 Bridgestone Firestone Tech Metodo per la preparazione di mescole di gomma vulcanizzabilecontenenti silice finalizzate alla produzione di fasce di battistrada.
ES2261175T3 (es) * 2000-10-04 2006-11-16 Pirelli Tyre S.P.A. Procedimiento para regular la fabricacion dentro de un mezclador.
US6608145B1 (en) 2000-10-13 2003-08-19 Bridgestone Corporation Silica-reinforced rubber compounded with an organosilane tetrasulfide silica coupling agent at high mixing temperature
US6433065B1 (en) 2000-10-13 2002-08-13 Bridgestone Corporation Silica-reinforced rubber compounded with mercaptosilanes and alkyl alkoxysilanes
JP4977939B2 (ja) * 2000-10-26 2012-07-18 Ｊｓｒ株式会社 ゴム組成物及びその製造方法
US6740700B2 (en) * 2000-10-26 2004-05-25 Jsr Corporation Rubber compositions and methods for producing the same
EP1339539B9 (en) * 2000-12-06 2005-06-15 PIRELLI PNEUMATICI Società per Azioni Process for manufacturing, moulding and curing tyres for vehicles wheels
DE10061473A1 (de) * 2000-12-08 2002-07-18 Continental Ag Verfahren zur Herstellung einer kieselsäurehaltigen Kautschukgrundmischung
US20040014869A1 (en) * 2001-05-09 2004-01-22 Wong Wai Keung Method for preparing silica filled elastomeric compositions
JP2004307820A (ja) * 2003-03-27 2004-11-04 Tokai Rubber Ind Ltd 耐熱性防振ゴム組成物
US20050090584A1 (en) * 2003-10-23 2005-04-28 Powell Clois E. Preparation of rubber compositions with organoclays
EP1761569B1 (en) * 2004-04-27 2009-11-11 Bridgestone Corporation Method of producing a tire composition having improved silica reinforcement
US7256231B2 (en) * 2004-11-12 2007-08-14 Bridgestone Corporation Silica-reinforced rubber compounded with blocked mercaptosilanes and alkyl alkoxysilanes
JP4805584B2 (ja) 2005-01-21 2011-11-02 住友ゴム工業株式会社 トレッド用ゴム組成物およびそれからなるタイヤ
KR100526425B1 (ko) * 2005-02-24 2005-11-08 하재성 전격방지장치를 갖는 교류 아크 용접기의 동작상태표시장치및 방법
BRPI0501490A (pt) * 2005-04-20 2006-12-12 Rhodia Br Ltda formulação de borracha de epdm reforçada com sìlica precipitada, processo para sua fabricação, processo para obtenção de um perfil de borracha reforçada, perfil de borracha extrudado colorido e uso de formulação de borracha reforçada
JP5021203B2 (ja) * 2005-12-06 2012-09-05 住友ゴム工業株式会社 ゴム組成物の製造方法
DE602006004601D1 (de) * 2005-07-29 2009-02-12 Pirelli Hochleistungsreifen, profilband und vernetzbare elastomerzusammensetzung
US7625965B2 (en) * 2007-02-08 2009-12-01 Momentive Performance Materials Inc. Rubber composition, process of preparing same and articles made therefrom
ES2310475B1 (es) * 2007-05-15 2009-12-04 Eduardo Menchen Pardo Producto para equilibrado de ruedas de vehiculos.
IT1394126B1 (it) * 2008-10-22 2012-05-25 Bridgestone Corp Mescola battistrada per pneumatici invernali
JP5567302B2 (ja) * 2009-08-17 2014-08-06 住友ゴム工業株式会社 シリカ配合ゴムの混練システム及び混練方法
US9260594B2 (en) * 2010-11-29 2016-02-16 The Goodyear Tire & Rubber Company Preparation of rubber containing silica and carbon black reinforcement, rubber composition and tire with component
JP5430610B2 (ja) * 2011-05-25 2014-03-05 日鉄住金ドラム株式会社 オープン型ドラム缶
JP6482875B2 (ja) * 2015-01-06 2019-03-13 住友ゴム工業株式会社 タイヤ用ゴム組成物の製造方法およびタイヤ
EP3288779B1 (en) 2015-04-30 2020-05-20 Bridgestone Americas Tire Operations, LLC Rubber-covered textile cords, tires containing same, and related methods
JP2024502306A (ja) * 2020-12-31 2024-01-18 ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー シリカ含有タイヤトレッドにおける弾性率の回復
WO2022173733A1 (en) 2021-02-09 2022-08-18 Pq Llc Silica gel as reinforcement agent for rubber compounds
US11773234B2 (en) 2021-02-09 2023-10-03 Pq, Llc Silica gel as reinforcement agent for rubber compounds
EP4365230A1 (en) 2022-11-02 2024-05-08 The Goodyear Tire & Rubber Company Silica treated with a coupling agent and polyethylene glycol for a rubber composition

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191929B1 (de) * 1985-02-08 1989-05-03 Hüls Aktiengesellschaft Haftvermittler zur Herstellung von Vulkanisaten mit gutem Füllstoff/Kautschuk-Verbund
ES2085959T5 (es) * 1990-03-02 2001-02-01 Bridgestone Corp Neumaticos.
FR2673187B1 (fr) * 1991-02-25 1994-07-01 Michelin & Cie Composition de caoutchouc et enveloppes de pneumatiques a base de ladite composition.
US5277425A (en) * 1992-09-11 1994-01-11 Greenskeeper Corp. Of Dutchess Golf club including turf repair tool

Also Published As

Publication number Publication date
US6136913A (en) 2000-10-24
EP0728803B1 (en) 2000-06-14
US5916951A (en) 1999-06-29
DE69608829D1 (de) 2000-07-20
TW416968B (en) 2001-01-01
KR960031481A (ko) 1996-09-17
US5804636A (en) 1998-09-08
TR199600143A1 (tr) 1996-10-21
JPH08277348A (ja) 1996-10-22
IT1274257B (it) 1997-07-15
CN1139684A (zh) 1997-01-08
AR001017A1 (es) 1997-08-27
ITMI950359A1 (it) 1996-08-24
DE69608829T2 (de) 2001-01-04
CN1099440C (zh) 2003-01-22
ITMI950359A0 (it) 1995-02-24
JP3522437B2 (ja) 2004-04-26
EP0728803A1 (en) 1996-08-28
KR100457255B1 (ko) 2005-09-06
BR9600620A (pt) 1997-12-30

Similar Documents

Publication Publication Date Title
ES2149392T3 (es) Procedimiento para producir una composicion de caucho vulcanizable con una carga de refuerzo a base de silice.
EE9700133A (et) Meetod imetaja reproduktiivtrakti rakkude karakteristikute muutmiseks, selleks kasutatav kompositsioon, selle valmistamise meetod ja kasutamine
MXPA94000913A (es) Estructura compuesta de un polimero hidrofilico yproducto que la contiene.
KR870007223A (ko) 고무 블렌드의 제조방법
BR9913884A (pt) Composição monolìtica
ES487783A1 (es) Procedimiento para la fabricacion de cuerpos de liberacion retardada
DE69124533D1 (de) Gemischte, Phosphor und Schwefel enthaltende Reaktionsprodukte hergestellt unter niedrigen Druck, verwendbar in Kraftübertragungszusammensetzungen und Verfahren zu deren Herstellung
BR9900738A (pt) Processo para melhorar as propriedades de borracha reciclada moída.
ES2167368T3 (es) Tabletas que contienen enzimas y proceso para su preparacion.
JPS5294487A (en) Production of compositions containing enzyme or microbial cells
KR880010138A (ko) 제동브레이크동체 제조용 주철 및 그 제조방법
JPS5272742A (en) Rubber composition
JPS57212221A (en) Modification of cis-1,4-polyisoprene rubber
BR9612793A (pt) Processo para fazer uma composicão detergente de baixa densidade
EP0831124A4 (en) RUBBER-FILLED RUBBER COMPOSITIONS
JPS55109644A (en) Manufacturing making rubber sheet
JPS547450A (en) Production of rubber composition with high unvulcanized strength
JPS56147840A (en) Production of fluorine rubber-vulcanizing composition
JPS5723641A (en) Improved rubber composition
SU703549A1 (ru) Полимерна композици
SU678054A1 (ru) Резинова смесь
JPS55114548A (en) Manufacture of thermally-recovering elastic article
JPS5684736A (en) Vulcanization of rubber
SU564356A1 (ru) Антифрикционный спеченный материал на основе железа
JPS5765675A (en) Electrolyte matrix for fuel cell and its manufacture

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 728803

Country of ref document: ES