Abstract: The present invention relates to a cross-linkable rubber composition, a cross-linked rubber composition obtained by cross-linking such a rubber composition, a method of preparing a tyre and a tyre. A cross-linkable rubber composition comprises, per hundred parts by weight of rubber (phr): ?1 phr to ?99 phr of a styrene-butadiene rubber (SBR) component; ?1 phr to ?99 phr of a polybutadiene rubber (BR) component; ?5 phr to ?35 phr of a polyterpene resin component; The polybutadiene rubber has a branching index G of ?0.7 to ?0.85 and a polydispersity index Mw/Mn of ?3.5 and ?4.5 and the polyterpene resin has a molecular weight Mw of ?900 to ?1200.

Abstract: The invention relates to a method for manufacturing a molded article (11) of a rubber polymer to which another article (12) is detachably connected. The method comprises the steps of providing a coupling means (2), comprising a first (2a) and second (2b) member, both of which are provided with interlocking elements (21,22) along connectable edges, the interlocking elements (21,22) being configured to interlock in a substantially continuous way along the edges in the connected state, and unlock in the disconnected state; integrating the first member (2a) and the molded article (11), such that its interlocking elements (21) are available for connection; integrating the second member (2b) and the other article (12), such that its interlocking elements (22) are available for connection; and interlocking the interlocking elements (21,22) of the first and second member (2a,2b) to produce the detachable connection between the articles.

Abstract: A vehicle front spoiler comprises a flexible airflow guiding element provided in a region of a front part of the vehicle and extending in a transverse direction Y of the vehicle, and an actuating member, configured to move the airflow guiding element relative to said part of the vehicle between an extended operative position and a retracted inoperative position in which the airflow guiding element is folded rearwards to behind said vehicle part. The airflow guiding element is made of a rubber composition comprising an anisotropic textile structure of reinforcement cord having an elongation at break in the Y-direction of from 5% to 50%, and an elongation at break in the Z-direction lower than the elongation at break in the Y-direction, and is readily moved between the operative and the inoperative position with relatively low hysteresis losses.

Abstract: The invention relates to a method for manufacturing a molded article (11) of a rubber polymer to which another article (12) is detachably connected. The method comprises the steps of providing a coupling means (2), comprising a first (2a) and second (2b) member, both of which are provided with interlocking elements (21,22) along connectable edges, the interlocking elements (21,22) being configured to interlock in a substantially continuous way along the edges in the connected state, and unlock in the disconnected state; integrating the first member (2a) and the molded article (11), such that its interlocking elements (21) are available for connection; integrating the second member (2b) and the other article (12), such that its interlocking elements (22) are available for connection; and interlocking the interlocking elements (21,22) of the first and second member (2a,2b) to produce the detachable connection between the articles.

Abstract: The invention relates to a polymer composition comprising 60-99 parts by weight of a first copolymer of monomer units of ethylene and an alpha-olefin, wherein the ethylene monomer unit content ranges from 45 to 56 wt. %, 1-20 parts by weight of a second copolymer of monomer units of ethylene and an alpha-olefin, and 0-20 parts by weight of a natural rubber. The invention further relates to a method for the preparation of the polymer composition. The vulcanized polymer composition is advantageously used in articles that need to be flexed at low temperatures.

Abstract: The invention related to a method of manufacturing an elastomeric product, e.g. rubber products, with a low hysteresis. The method comprises at least the steps of providing an elastomeric material composition which comprises an elastomeric material, sulfur and a peroxide and vulcanizing the blend at a selected reaction temperature that is higher than the temperature at which cross-links are formed in the composition, and that is between the temperature at which the half-life time of the peroxide is 1 hour and 50° C. above the temperature at which the half-life time of the peroxide is 1 hour. The composition shows a low level of hysteresis in combination with good (tear) strength, in particular at low temperatures.

Abstract: A vehicle front spoiler comprises a flexible airflow guiding element provided in a region of a front part of the vehicle and extending in a transverse direction Y of the vehicle, and an actuating member, configured to move the airflow guiding element relative to said part of the vehicle between an extended operative position and a retracted inoperative position in which the airflow guiding element is folded rearwards to behind said vehicle part. The airflow guiding element is made of a rubber composition comprising an anisotropic textile structure of reinforcement cord having an elongation at break in the Y-direction of from 5% to 50%, and an elongation at break in the Z-direction lower than the elongation at break in the Y-direction, and is readily moved between the operative and the inoperative position with relatively low hysteresis losses.

Abstract: The invention relates to a method for mutually adhering moulded articles of at least partially vulcanized rubber polymers. The method comprises at least the steps of providing a rubber composition which comprises a peroxide with an initiating temperature lower than the vulcanization temperature of at least one of the rubber polymers; arranging an adhesive layer of the rubber composition on the surface of the moulded articles which is to be adhered; bringing the surfaces for adhering together under pressure; and vulcanizing at least the adhesive layer at an increased temperature.

Abstract: The invention relates to a method for mutually adhering molded articles of at least partially vulcanized rubber polymers. The method comprises at least the steps of providing a rubber composition which comprises a peroxide with an initiating temperature lower than the vulcanization temperature of at least one of the rubber polymers; arranging an adhesive layer of the rubber composition on the surface of the molded articles which is to be adhered; bringing the surfaces for adhering together under pressure; and vulcanizing at least the adhesive layer at an increased temperature.

Abstract: The invention relates to a method for manufacturing a molded article from a first rubber polymer, which molded article comprises an insert from a second rubber polymer. The method comprises the steps of (A) providing an at least partially vulcanized article from the first rubber polymer, the article having a recess that extends in a depth direction and in transverse directions perpendicular to the depth direction, for accommodating the insert; (B) providing an at least partially vulcanized insert from the second rubber polymer, the insert having a shape such that it can be accommodated in the recess; (C) arranging an unvulcanized object from a third rubber polymer in the recess to partly fill the recess; (C) arranging the at least partly vulcanized insert in the recess to obtain an assembly; and (D) vulcanizing the assembly under pressure. The method yields a molded article having an optically sharp interface between the first rubber polymer and the insert.

Abstract: The invention relates to a method for mutually adhering a first moulded article of an at least partially vulcanized rubber polymer and a second moulded article of a polymer. The method comprises at least the steps of providing a first moulded article of a rubber polymer which comprises a compound containing carboxylic acid anhydride; providing a second moulded article of a polymer; providing an adhesive composition comprising at least a polyisocyanate, a polyol and a catalyst; arranging an adhesive layer of the adhesive composition on the surface for adhesion of at least one moulded article; bringing the surfaces for adhesion together under pressure; and polymerizing at least the adhesive layer at a suitable temperature.

Abstract: A motor vehicle front spoiler has a spoiler lip (11) extending in the region of a front part of the motor vehicle over the entire width or part of the width of the front part. An actuating element (12) enables the spoiler lip (11) to be shifted between an extended operating position, in which the spoiler lip (11) forms a downwardly directed extension of the front part and acts as an aerodynamic air-guiding device, and a retracted inoperative position, in which the spoiler lip (11) is directed to the rear and essentially has no aerodynamic air-guiding effect. A portion (13) of the spoiler lip (11) that is at the bottom in the operating position of the spoiler lip (11) and is in the vicinity of the roadway can be replaced.

Abstract: The invention relates to a method of manufacturing a tire having a colored sidewall. The method comprises disposing a strip of a colored rubber compound circumferentially about the external surface of the sidewall region of the tire in its uncured state, placing the uncured tire in a tire curing mold with the strip exposed to direct contact with the mold, providing the mold with circumferential recesses at both sides of the rubber strip and letting the strip slightly overlap with the recesses in the radial direction of the tire, curing the tire whereby circumferential side parts of the strip flow into the recesses to form circumferential protrusions in the strip, removing the tire from the mold, and removing the protrusions at least partially. The invention further relates to a tire obtained with the method.

Abstract: The invention relates to a polymer composition comprising a matrix polymer, silica particles dispersed therein, and a coupling agent and a screening agent for the silica particles, and is characterized in that the screening agent is an alkylamine compound. The polymer composition is particularly suitable for the manufacture of rubber tires with improved rolling resistance.

Abstract: A motor vehicle front spoiler has a spoiler lip (11) extending in the region of a front part of the motor vehicle over the entire width or part of the width of the front part. An actuating element (12) enables the spoiler lip (11) to be shifted between an extended operating position, in which the spoiler lip (11) forms a downwardly directed extension of the front part and acts as an aerodynamic air-guiding device, and a retracted inoperative position, in which the spoiler lip (11) is directed to the rear and essentially has no aerodynamic air-guiding effect. A portion (13) of the spoiler lip (11) that is at the bottom in the operating position of the spoiler lip (11) and is in the vicinity of the roadway can be replaced.

Abstract: The invention relates to a polymer composition comprising a matrix polymer, silica particles dispersed therein, and a coupling agent and a screening agent for the silica particles, and is characterized in that the screening agent is an alkylamine compound. The polymer composition is particularly suitable for the manufacture of rubber tyres with improved rolling resistance.

Abstract: The invention relates to a method for mutually adhering moulded articles of at least partially vulcanized rubber polymers. The method comprises at least the steps of providing a rubber composition which comprises a peroxide with an initiating temperature lower than the vulcanization temperature of at least one of the rubber polymers; arranging an adhesive layer of the rubber composition on the surface of the moulded articles which is to be adhered; bringing the surfaces for adhering together under pressure; and vulcanizing at least the adhesive layer at an increased temperature.

Abstract: The invention relates to a method for manufacturing a moulded article from a first rubber polymer, which moulded article comprises an insert from a second rubber polymer The method comprises at least the steps of providing a vulcanizing mould with mounting means for the insert, arranging an at least partially vulcanized insert in the vulcanizing mould using the mounting means, adding the first rubber polymer to the vulcanizing mould in unvulcanized state and vulcanizing the moulded article at a suitable vulcanization temperature and subsequently removing the moulded article, with the proviso that prior to step C) at least that side of the insert which comes into contact with the first rubber polymer during step C) is provided with a reactive mixture comprising free radicals. The method is particularly suitable for the manufacture of rubber tyres and spoilers with a coloured insert.