WO1998038246A1 - Composition de caoutchouc - Google Patents
Composition de caoutchouc Download PDFInfo
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- WO1998038246A1 WO1998038246A1 PCT/JP1998/000520 JP9800520W WO9838246A1 WO 1998038246 A1 WO1998038246 A1 WO 1998038246A1 JP 9800520 W JP9800520 W JP 9800520W WO 9838246 A1 WO9838246 A1 WO 9838246A1
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- 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
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- 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
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5425—Silicon-containing compounds containing oxygen containing at least one C=C bond
-
- 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—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/06—Handles
- A63B60/14—Coverings specially adapted for handles, e.g. sleeves or ribbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2410/00—Soles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/14—Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S138/00—Pipes and tubular conduits
- Y10S138/07—Resins
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S198/00—Conveyors: power-driven
- Y10S198/957—Conveyor material
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- the present invention relates to a rubber composition, and more particularly to a rubber composition having excellent processability before vulcanization and physical properties of a vulcanized product, footwear, a conveyor cover, a roll, a hose, and an electric wire.
- Rubber compositions, and grips depending on the intended use, a rubber composition that is superior in the properties required for each use, and footwear that is partially or wholly composed of the rubber composition.
- rubber compositions containing silica have phenomena such as an increase in viscosity, scorching (scorch) and vulcanization delay during unvulcanization, resulting in poor processability and poor productivity. There was a problem of becoming. It is considered that such a peculiar phenomenon in the rubber composition containing the resilient force is caused by the silanol group present on the resilient surface.
- the increase in the viscosity is caused by the formation of a structure in the rubber composition due to the cohesive force of the silanol group and the increase in the viscosity, or the vulcanization accelerator or the like being adsorbed by the polarity of the silanol group. It is thought that the processability of the unvulcanized rubber composition decreases due to the phenomenon that the vulcanization reaction is delayed or the mixing is reduced due to insufficient compatibility with the non-polar rubber. Can be
- a rubber composition containing silica is often used in combination with a silane coupling agent.
- silanol groups are also present in the lumen of the silica particles, and these silanol groups react with the silane coupling agent, losing the silane coupling agent and reducing the capturing effect. It will be. Therefore, there is a problem that a large amount of a silane coupling agent must be added.
- each rubber composition is required to be excellent in various properties according to the use of the processed product.
- a rubber composition for footwear particularly a rubber composition used at the bottom of footwear or a part exposed to severe wear such as boots, is required to have a vulcanized material having excellent wear resistance.
- the cover rubber of the conveyor is required to be excellent in wear resistance and crack resistance, because wear due to loading of conveyed goods and cracking due to bending at the pulley part occur. It is possible. Since the rubber composition used for the roll is subjected to abrasion due to the conveyance of iron and paper making and the load due to the conveyed product, the vulcanized product is required to have excellent abrasion resistance and adhesion to iron. Rubber compositions used for hoses are required to have excellent modulus and abrasion resistance because the hoses expand due to water pressure, hydraulic pressure, etc., or come into contact with other hoses or other materials. Rubber compositions used for covering electric wires are required to have excellent wear resistance in consideration of product life.
- an object of the present invention is to solve the problems inherent in the rubber composition containing the silica, and to improve the processability before vulcanization and the physical properties of the vulcanized product.
- the properties required for each application depending on the application, such as footwear, conveyor covers, rolls, hoses, wires, rubberized cloth, and grips
- An object of the present invention is to provide an excellent rubber composition.
- R 1 is a substituted or unsubstituted, optionally substituted, monovalent hydrocarbon group having an ether bond having 1 to 18 carbon atoms
- R 2 is a hydrogen atom or a substituted with 1 to 18 carbon atoms.
- R 3 is a methyl group or a phenyl group
- m is an integer of 1 or more
- n is 0 or a positive integer.
- a rubber composition comprising a polysiloxane having an average degree of polymerization of 3 to 1000 and, in some cases, (D) a silane coupling agent.
- a rubber composition for footwear comprising 1 to 100 parts by weight of a polysiloxane having an average degree of polymerization of 3 to 1000 relative to 100 parts by weight of a filler (B).
- a rubber composition for a conveyor cover comprising 1 to 50 parts by weight of a polysiloxane having a content of 3 to 1000 with respect to 100 parts by weight of the filler (B). Things are provided.
- a rubber composition for a roll comprising 1 to 100 parts by weight of a polysiloxane having a content of 3 to 1000 with respect to 100 parts by weight of the filler (B).
- a rubber composition for a hose comprising: (A) 100 parts by weight of an elastomer; (B) 5 to 150 parts by weight of a filler; C) A rubber composition for electric wires, comprising 1 to 40 parts by weight of a polysiloxane having an average degree of polymerization of 3 to 1000 represented by the formula (I) and 100 parts by weight of the filler (B). Things are provided.
- a rubber composition for a rubber cloth comprising 1 to 100 parts by weight of a polysiloxane having a content of 3 to 1000 with respect to 100 parts by weight of the filler (B).
- a rubber composition for a grip comprising 1 to 100 parts by weight based on 100 parts by weight of the filler (B).
- the rubber composition for footwear the rubber composition for a conveyor cover, the rubber composition for a roll, the rubber composition for a hose, A footwear, a conveyor cover, a roll, a hose, an electric wire, a rubber cloth, and a grip comprising the rubber composition for an electric wire, the rubber composition for a rubber cloth, and the rubber composition for a grip are provided.
- FIG. 1 is a schematic diagram illustrating the structure of a test hose used for measuring abrasion resistance of a rubber composition for a hose.
- the rubber composition for footwear The rubber composition for footwear, the rubber composition for a conveyor cover, the rubber composition for a roll, the rubber composition for a hose, the rubber composition for an electric wire, the rubber composition for a rubber cloth, and the grip of the present invention are described below.
- the rubber compositions for use (hereinafter, these rubber compositions are collectively referred to as “rubber composition of the present invention” unless specifically described below) will be described in detail.
- the present inventors have found that by blending a rubber composition with (A) an elastomer, (B) a filler and (C) the polysiloxane of the formula (I) as essential components, It was found that a rubber composition with excellent workability before unvulcanization and excellent properties of the vulcanized product could be obtained, and the abrasion resistance was improved by using a silane coupling agent in combination. It was found that it improved.
- the elastomer (A) which is an essential component of the rubber composition of the present invention, is not particularly limited, and may be any elastomer commonly used for each rubber composition. It is appropriately selected according to characteristics and the like. For example, there are gen-based elastomers, and olefin-based elastomers.
- gen-based elastomers include natural rubber (NR), polyisoprene rubber (IR), polychloroprene rubber (CR), styrene butadiene copolymer rubber (SBR), and polystyrene.
- examples include butadiene rubber (BR), acrylonitrile-butadiene copolymer rubber (NBR), and butyl rubber (1IR).
- Specific examples of the olefin-based elastomer include ethylene-propylene copolymer rubber (EPM, EPDM), ethylene-vinyl acetate copolymer (EVA), and ethylene-vinyl acetate copolymer (EVA).
- EPM ethylene-propylene copolymer rubber
- EVA ethylene-vinyl acetate copolymer
- EVA ethylene-vinyl acetate copolymer
- EVA methacrylic acid copolymer
- EMMA ethylene / methyl methacrylate copolymer
- the filler which is the component (B) of the rubber composition of the present invention is a common inorganic filler (for example, calcium carbonate, clay, talc, diatomaceous earth, mica, alumina, aluminum sulfate). It may be a reinforcing agent such as carbon black, silica, etc., of course. In the present invention, one or more of these may be used as the filler.
- a common inorganic filler for example, calcium carbonate, clay, talc, diatomaceous earth, mica, alumina, aluminum sulfate.
- It may be a reinforcing agent such as carbon black, silica, etc., of course. In the present invention, one or more of these may be used as the filler.
- silica is particularly poor in mixing processability, and the improvement effect of the present invention is remarkable.
- Examples of silica to be used include hydrated maleic acid having a nitrogen specific surface area of 50 to 300 m 2 used for rubber.
- Specific examples of this silica include Carplex (Shionogi Pharmaceutical), Toksil (Tokuyama), Star Seal (Kamijima Chemical), Silton (Mizusawa Chemical), Vulkasil (Bayer) ), Ultrasil (Degussa) and the like.
- R 1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms, and may have an ether bond.
- the substituted or unsubstituted monovalent hydrocarbon group include a methyl group, an ethyl group, a propyl group, a pentyl group, a hexyl group, a stearyl group and the like.
- the group having an ether bond include an ethoxyquinethyl group and a butoxyshethyl group.
- R 2 is a hydrogen atom or a substituted or unsubstituted hydrocarbon group having 1 to 18, preferably 2 to 18 carbon atoms, and may have a hetero atom.
- the hydrocarbon group having 1 to 18 carbon atoms include a methyl group, an ethyl group, a propyl group, or styrene, ⁇ -methyl styrene, 1-methyl styrene dimer, chloromethyl styrene, and acryl. Examples thereof include residues based on chlorotrinoyl, arylinoglycidyl ether, phenylglycidyl ether, limonene, isooctene, and vinylcyclohexene.
- R 3 is a methyl group or a phenyl group.
- M is an integer of 1 or more, and n is 0 or a positive integer.
- m + n is 3 or more, preferably 10 or more in consideration of the boiling point of polysiloxane and the like, and particularly those having a value of 10 to 50 are easily available as raw materials.
- the port polysiloxane used as the component (C) in the present invention, the repeating unit having a group OR 1 in the side chain is an essential unit of construction, having at least one in one molecule. Further, the repeating unit having groups R 2 and R 3 in the side chain is a structural unit introduced as needed.
- the polysiloxane has an average degree of polymerization of 3 to 1000, and preferably an average degree of polymerization of 10 to 1000, as a size covering the surface of the silica particles and exhibiting a lubricating effect. It is the first or the original.
- the rubber composition of the present invention by blending the polysiloxane, a silanol group of silica blended in the rubber composition reacts with the polysiloxane, and the silica surface is cured. Siloxane covered It is thought. Therefore, an increase in the viscosity of the rubber composition due to the cohesive force of the silanol group can be avoided, and a composition having a lower viscosity can be obtained as compared with a conventional rubber composition containing a silicone resin. Further, in the conventional rubber composition, it is possible to avoid a phenomenon that the cohesion of the mixture is reduced due to insufficient compatibility with the non-polar rubber due to the polarity of the silanol group.
- the processability of the unvulcanized composition can be improved. Further, vulcanization delay due to adsorption of a vulcanization accelerator or the like due to the polarity of the silanol group is also improved. Further, since the silane coupling agent, which will be described later, can be prevented from reacting with the silanol group present in the lumen of the silica particles and being lost, the silane coupling agent can be used. The compounding amount can be reduced.
- the polysiloxane represented by the above formula (I) can be synthesized, for example, generally by reacting a polysiloxane containing a Si—H group with an alcohol under a transition metal catalyst.
- Si—H group-containing polysiloxane examples include those represented by the following formula.
- methylhydrogenpolysiloxane because of its low cost.
- Examples of the alcohol used as a reaction raw material include methanol, ethanol, propanol, butanol, pentanol, heptanol, and octanol. Examples include ethanol, octadecanol, vinyl alcohol, and benzyl alcohol. Further, alcohols having an oxygen atom such as ethylene glycol monomethyl ether and diethyl glycol monomethyl ether can be exemplified. Of these, ethanol is particularly preferred because of its improved workability.
- transition metal catalyst examples include chloroplatinic acid, platinum-ether complex, platinum one-year-old olefin complex, PdCl 2 (PPh 3 ) 2 , RhCl (PPh 3 ) 2 , CuO 2 and Me 2 2 NCIl 2 — a mixture of CH 2 NMe 2 , tin octoate, zinc octoate and the like, or an acid or base catalyst can be used.
- various organic groups can be introduced into polysiloxane according to the type of rubber.
- Examples of a method for introducing an organic group into polysiloxane include a method in which the Si—H group of polysiloxane and an organic compound having a double bond are reacted using the above-described catalyst. You.
- Examples of the organic compound having a double bond include ethylene, styrene, methinorestylen, ⁇ -methylstyrene dimer, chloromethylstyrene, and acrylonitrile. Trinole, arinoleglycidyl ether, feninoleglycidyl ether, limonene, isooctene, bininoleschi, and hexene.
- the rubber composition of the present invention contains an elastomer ( ⁇ ), a filler ( ⁇ ), and a polysiloxane (C) as essential components.
- the components are blended in the optimum components and proportions according to the characteristics required for each of the following applications: cover cover, roll, hose, electric wire, rubberized cloth, and grip.
- the elastomer which is the component (A) contains, for example, NR and / or NBR in the elastomer at 50% by weight or more, preferably 55 to 100% by weight. Things are used. If the content of NR and NBR in the elastomer (A) is less than 50% by weight, the vulcanization properties required for rubber compositions for footwear, or the wear resistance and oil resistance of the vulcanizate Etc. are not enough.
- component (A) other than NR or NBR examples include, for example, polyisoprene rubber (1R), styrene-butadiene copolymer rubber (SBR), and polystyrene rubber.
- polyisoprene rubber (1R) examples include polyisoprene rubber (1R), styrene-butadiene copolymer rubber (SBR), and polystyrene rubber.
- Libutadiene rubber (BR), polychloroprene rubber (CR), ethylene-propylene copolymer rubber (EPM, EPDM) and the like are used.
- the mixing ratio of the elastomer (A) and the filler (B) is 5 to 150 parts by weight of the filler (B) per 100 parts by weight of the elastomer (A).
- the ratio is preferably 10 to 100 parts by weight of the filler (B) to 100 parts by weight of the elastomer (A). If the blending ratio of the filler (B) is less than 5 parts by weight with respect to 100 parts by weight of the elastomer (A), the blending effect cannot be obtained. Sex is impaired.
- the amount of polysiloxane used as the component (C) in the rubber composition for footwear is 1 to 100% by weight, preferably 2 to 40% by weight of the amount of the filler (B). %. If the blending amount of the polysiloxane (C) is less than 1% by weight of the blending amount of the filler (B), the blending effect is small, while the blending amount of the filler (B) is 100%. If the amount exceeds the weight percentage, the vulcanizate may cause a blow-out.
- the elastomer as the component (A) is not particularly limited, and examples thereof include NR, SBR, BR, NBR, CR, EP, EPDM and the like. .
- the mixing ratio of the elastomer (A) and the filler (B) is such that the filler (B) is added to 100 parts by weight of the elastomer (A). ) 5 to 200 parts by weight, preferably 10 to 180 parts by weight of filler (B) per 100 parts by weight of elastomer (A). If the blending ratio of the filler (B) is less than 5 parts by weight with respect to 100 parts by weight of the elastomer (A), the blending effect cannot be obtained. Is impaired.
- the compounding amount of the polysiloxane as the component (C) in the rubber composition for a cover cover is 1 to 50% by weight of the filling amount of the filler (B), preferably 2 to 40% by weight. It is the amount to be% by weight. If the blending amount of the polysiloxane (C) is less than 1% by weight of the blending amount of the filler (B), the blending effect is small, while the blending amount of the filler (B) is 50%. When the amount is more than the weight%, there is a possibility that the vulcanizate may be blown out.
- the elastomer which is the component (A) is not particularly limited, and examples thereof include NR, SBR, CR, BR, NBR and the like.
- the mixing ratio of the elastomer (A) and the filler (B) is 5 to 150 parts by weight of the filler (B) per 100 parts by weight of the elastomer (A). Parts by weight, and preferably 10 to 100 parts by weight of the filler (B) to 100 parts by weight of the elastomer (A). If the blending ratio of the filler (B) is less than 5 parts by weight with respect to 100 parts by weight of the elastomer (A), the blending effect cannot be obtained. Is impaired.
- the amount of polysiloxane, which is the component (C), in the rubber composition for a roll is 1 to 100% by weight of the filler (B), preferably 2 to 40% by weight. %.
- the blending amount of the polysiloxane (C) is less than 1% by weight of the blending amount of the filler (B), the blending effect cannot be obtained, while the blending amount of the filler (B) is 100%. If the amount exceeds the weight percentage, the vulcanizate may cause a blow-out.
- the elastomer which is the component (A) at least one selected from a gen-based elastomer and an olefin-based elastomer is used.
- the mixing ratio of the elastomer (A) and the filler (B) is 5 to 200 parts by weight of the filler (B) per 100 parts by weight of the elastomer (A). Parts, preferably 10-180 parts by weight of the filler (B) to 100 parts by weight of the elastomer (A). If the blending ratio of the filler (B) is less than 5 parts by weight with respect to 100 parts by weight of the elastomer (A), the blending effect cannot be obtained. Is impaired.
- the amount of the polysiloxane used as the component (C) in the rubber composition for hoses is 1 to 40% by weight of the amount of the filler (B), preferably 2 to 20% by weight. %. If the blending amount of the polysiloxane (C) is less than 1% by weight of the blending amount of the filler (B), the blending effect is not obtained, while the blending amount of the filler (B) is If the amount is more than 20% by weight, the vulcanizate may cause blow-out.
- At least one selected from a gen-based elastomer and an olefin-based elastomer is used as the elastomer as the component (A).
- the gen-based elastomer include NR, SBR, I, BR, NBR, and CR.
- EPM, EPDM, EVA, E ⁇ , EMMA is used as the elastomer as the component (A).
- the mixing ratio of the elastomer (A) and the filler (B) is such that the filler (B) is 5 to 150 parts by weight with respect to 100 parts by weight of the elastomer (A). Parts, and preferably 10 to 100 parts by weight of the filler (B) to 100 parts by weight of the elastomer (A). If the blending ratio of the filler (B) is less than 5 parts by weight with respect to 100 parts by weight of the elastomer (A), the blending effect cannot be obtained. Is impaired.
- the amount of the polysiloxane used as the component (C) in the rubber composition for electric wires is 1 to 40% by weight of the amount of the filler (B), preferably 2 to 20% by weight. It is the amount to be% by weight. If the amount of the polysiloxane (C) is less than 1% by weight of the amount of the filler (B), no compounding effect can be obtained. On the other hand, the amount of the filler (B) cannot be reduced. If the amount is more than 40% by weight, the vulcanizate may cause a blow-out.
- the elastomer as the component (A) is not particularly limited, and examples thereof include a gen-based elastomer such as NR, SBR, BR, NBR, and CR. , EPM, EPDM, etc.
- the mixing ratio of the elastomer (A) and the filler (B) is 5 to 250 parts by weight of the filler (B) per 100 parts by weight of the elastomer (A M00). And preferably 10-200 parts by weight of the filler (B) to 100 parts by weight of the elastomer-(A) 100 parts by weight of the elastomer (100 parts by weight of the elastomer) If the blending ratio of the filler (B) is less than 5 parts by weight, no blending effect is obtained, and if it exceeds 250 parts by weight, processability is impaired.
- the compounding amount of the polysiloxane as the component (C) in the rubber composition for rubber cloth is 1 to 100% by weight of the compounding amount of the filler (B).
- the amount is preferably between 2 and 40% by weight. If the blending amount of the polysiloxane (C) is less than 1% by weight of the blending amount of the filler (B), the blending effect is not obtained, while the blending amount of the filler (B) is 100%. If the amount is more than 10% by weight, in the rubber composition for a grip, which may cause a brittle drop from the vulcanized product, the elastomer as the component (A) is not particularly limited. , NR, SBR, BR, NBR, etc., and olefin-based elastomers, such as EPM, EPDM.
- the mixing ratio of the elastomer (A) and the filler (B) is such that the filler (B) is 5 to 100 parts by weight based on 100 parts by weight of the elastomer (A). Parts by weight, preferably 10 to 80 parts by weight of the filler (B) per 100 parts by weight of the elastomer (100 parts by weight of the elastomer (A)). If the mixing ratio of the filler (B) is less than 5 parts by weight, no mixing effect can be obtained, and if it exceeds 100 parts by weight, processability is impaired.
- the amount of the polysiloxane used as the component (C) in the rubber composition for grips is 1 to 50% by weight of the amount of the filler (B), preferably 2 to 50% by weight. It is an amount to be 40% by weight. If the blending amount of the polysiloxane (C) is less than 1% by weight of the blending amount of the filler (B), the blending effect cannot be obtained, while the blending amount of the filler (B) cannot be improved. If the amount is more than 50% by weight, the vulcanizate may cause a blow-out.
- the rubber composition of the present invention may further comprise a silane coupling agent (D) in addition to the elastomer (A), the filler (B), and the polysiloxane (C).
- the reinforcing effect of the silane coupling agent can be sufficiently exhibited even if the blending amount of the silane coupling agent is smaller than before. Therefore, it is effective in improving the wear resistance and other properties of the vulcanized product. Further, when a silane coupling agent is blended with the rubber composition for a conveyor cover, a rubber composition having excellent abrasion resistance in a vulcanized product can be obtained. Further, when a silane coupling agent is added to the rubber composition for a roll, a rubber composition having excellent adhesion to iron can be obtained in addition to the wear resistance of the vulcanized product.
- silane coupling agent compounded in the rubber composition of the present invention may be any silane coupling agent conventionally used in combination with a silica filler, and is not particularly limited. Representative examples include those shown above. Of these, bis [3-(trietkinsilyl)-propyl] tetrasulfide is particularly preferred from the viewpoint of improving workability.
- the amount of the silane coupling agent in the rubber composition of the present invention may be determined according to the amount of the rubber composition for footwear, conveyor cover, roll, hose, electric wire, rubber cloth, or grip.
- the amount is from 1 to 20% by weight, preferably from 2 to 10% by weight, based on the amount of the filler to be added. If it is less than 1% by weight, the desired effect cannot be obtained, and if it is more than 20% by weight, scorching (scorch) in the mixing or extrusion process is liable to occur.
- the rubber composition of the present invention may contain an elastomer (A), a filler (B), a polysiloxane (C), and, if necessary, for further improving properties such as abrasion resistance.
- silane coupling agent (D) which is blended together, a carbon black, a vulcanizing or cross-linking agent, a vulcanizing or cross-linking accelerator, various oils, an anti-aging agent, a plasticizer, and an anti-scorch agent
- additives for various purposes such as flame retardants and general rubbers are distributed. Can be combined. These additives can be blended in conventional general amounts of these additives, as long as they do not contradict the purpose of the present invention.
- the production of the rubber composition of the present invention may be carried out as needed to further improve the properties of the elastomer (A), the filler (B) and the polysiloxane (C), and the abrasion resistance and the like.
- the silane coupling agent (D) and the various additives described above can be kneaded and vulcanized to form a composition, vulcanized or crosslinked in a conventional manner.
- the present invention provides a rubber composition for footwear, a rubber composition for a cover, a rubber composition for a roll, a rubber composition for a hose, a rubber composition for an electric wire, a rubber composition for a rubber cloth, and a rubber composition.
- An object of the present invention is to provide footwear, a conveyor cover, a roll, a hose, an electric wire, a rubberized cloth, and a grip each comprising a rubber composition for rubber.
- the footwear of the present invention has the sole or the whole made of the rubber composition for footwear.
- the conveyor cover is made of the rubber composition for a conveyor cover.
- the mouth of the present invention has a rubber layer made of the rubber composition for mouth, and is provided on an outer peripheral portion of a shaft core made of an iron-based metal such as iron or soft iron. Form a layer.
- the hose of the present invention has an outer rubber layer or an inner rubber layer made of the rubber composition for a hose.
- the electric wire of the present invention has an outer coating layer made of the rubber composition for an electric wire.
- the rubberized cloth of the present invention has a rubber layer made of the rubber composition for a rubberized cloth on a base cloth.
- the grip of the present invention has a grip portion made of the rubber composition for a grip.
- Polysiloxanes used in Examples and Comparative Examples were synthesized according to the following methods.
- the obtained polysiloxane is assumed to have the following structure.
- SBR (1) JSR 1778N (23.7% by weight of naphthenic oil) manufactured by Nippon Synthetic Rubber Co., Ltd.
- SBR (2) Nippon 1502, manufactured by Nippon Zeon Co., Ltd.
- NBR N230SL, manufactured by Nippon Synthetic Rubber Co., Ltd.
- Neoprene WRT manufactured by Showa Denko Dupont EPDM (1): JSR EP33 manufactured by Nippon Synthetic Rubber Co., Ltd.
- BPDM (2) JSR EPT4021 manufactured by Nippon Synthetic Rubber Co., Ltd.
- Silicon (2) made by Tokuma, Tokuseal GU
- Silane cupping agent Degussa, Si69 (chemical name: bis- [31 (triethoxysilyl) -propyl] tetrasulfide)
- Titanium oxide titanium dioxide
- Magnesium oxide Kyowa Mag 150, manufactured by Kyowa Chemical Co., Ltd. (1): Kao link
- Naphthenic oil Nippon Oil Co., Ltd.
- Comlex 2 Nolafin oil Idemitsu Kosan Co., Ltd.
- Aroma oil Idemitsu Kosan Co., Ltd., Diana Process Oil Wax: Ouchi Shinko Chemical Co., Ltd., Sannok
- Plasticizer D0P di- (2-ethylhexyl) phthalate
- Stearic acid Industrial stearic acid
- Anti-aging agent 3 C N-vinyl N'-isopropyl-p-phenyl Two resin Min
- Anti-aging agent 6 C N-phenyl-1-N '— (1,3—dimethyltinole) 1 p—phenylenediamine
- Anti-aging agent MBP 2, 2-Methylene bis (4-Methyl 6-t-Butylphenol)
- Vulcanization accelerator DM dibenzothiazyl disulfide
- Vulcanization accelerator CZ N—cyclohexyl 2-benzothiazyl sulphenamide
- Vulcanization accelerator TS tetramethyl thiuram mono sulfide
- Vulcanization accelerator D0TG di-o-triguanidine
- Vulcanization accelerator DPG 1,3—vinylguanidine
- Vulcanization accelerator 22 2 — Melcaptoimidazoline
- Vulcanization accelerator M 2—mercapto benzothiozole
- Vulcanization accelerator TRA 2 — dipentamethylen thiuram tetra sulfite '
- Unvulcanized physical properties M-221 viscosity, scorch time
- vulcanized physical properties break strength, elongation at break, tensile strength at 100% elongation
- abrasion resistance flexibility
- the adhesion was measured or evaluated according to the following method.
- Viscosity 100 based on J IS K 6300. Measured at C 2) Scorch time: The time (minute) at which the viscosity increased by 5 points at 125 ° C based on Jl SK 6300 was measured.
- the wear amount (mm 3 ) of the sample vulcanized under pressure at 150 ° C for 30 minutes was measured based on D1N 53516.
- the wear resistance index was determined according to the above equation (3).
- the inner rubber layer 2 made of NBR (thickness: 1.8 mm)
- the braided reinforcing layer 3 made of polyester fiber
- a plurality of test hoses were installed horizontally, and an iron jig with an acute angle (90 degrees) was placed on the rubber layer on the outer surface of the test hose, and an equal constant load (2. Okgf) was applied to each of the hoses.
- the iron jig was reciprocated while applying the force, and the amount of wear per 4 hours was measured, and the wear resistance index was determined according to the above equation (3).
- the components excluding the vulcanization accelerator and sulfur were charged into a closed mixer with an internal volume of 1.8 liters, and kneaded for 3 to 5 minutes.
- the masterbatch released when the temperature reached 120 ° C 5 ° C was kneaded with a vulcanization accelerator and sulfur shown in Table 1 using an 8-inch open roll to obtain a rubber composition for footwear.
- the unvulcanized physical properties of the obtained rubber composition for footwear were measured.
- this rubber composition for footwear is placed in a mold of 15 ⁇ 15 ⁇ 0.2 cm, and press vulcanized at 140 ° C. for 15 minutes to prepare a test piece (rubber sheet). Used for measurement or evaluation. Table 1 shows the results.
- a rubber composition for footwear was produced in the same manner as in Example 1 except that the composition shown in Table 2 was used, and the unvulcanized properties and vulcanized properties (vulcanization temperature: 140 ° C, vulcanization) (Time: 15 minutes) and abrasion resistance were measured or evaluated. Table 2 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 3 was used, and a rubber composition for a conveyor cover was obtained.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 4 was used, to obtain a rubber composition for conveyor cover.
- the uncured physical properties, vulcanized physical properties (vulcanization temperature: 150 ° C, vulcanization time: 30 minutes) and abrasion resistance of the obtained rubber composition for a cover were measured or evaluated. Table 4 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 5 was used, and a rubber composition for a roll was obtained. Unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 1) 50 ° C, vulcanization time: 30 minutes) and abrasion resistance were measured or evaluated. Table 5 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 6 was used, and a rubber composition for a roll was obtained.
- the unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 150 ° C, vulcanization time: 30 minutes) and abrasion resistance of the obtained rubber composition for a mouth were measured or evaluated. Table 6 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 7 was used, and a rubber composition for a hose was obtained.
- the obtained e The unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 150 ° C, vulcanization time: 30 minutes) and abrasion resistance of the rubber composition for bases were measured or evaluated. Table 7 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 8 was used, and a rubber composition for a hose was obtained.
- the unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 150 ° C, vulcanization time: 30 minutes) and abrasion resistance of the obtained rubber composition for hoses were measured or evaluated. Table 8 shows the results.
- Rubber composition in the same manner as in Example 1 except that the standard example 9 (comparative example 15), the examples 18 and 1 and the comparative examples 16 to 19 were used in each case except for the formulation shown in Table 9.
- a rubber composition for electric wires was obtained. Obtained electric wire Unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 150 ° C, vulcanization time: 30 minutes) and abrasion resistance were measured or evaluated for the rubber composition for rubber. Table 9 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 10 was used, and a rubber composition for electric wires was obtained.
- the unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 150 ° C, vulcanization time: 30 minutes) and abrasion resistance of the obtained rubber composition for electric wires were measured or evaluated. Table 10 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 11 was used, and a rubber composition for a rubber cloth was obtained. Unvulcanized physical properties, vulcanized physical properties (vulcanization temperature) : 140 ° C, vulcanization time: 15 minutes) and abrasion resistance were measured or evaluated. Table 11 shows the results.
- a rubber composition was produced in the same manner as in Example 1 except that the composition shown in Table 12 was used, and a rubber composition for a grip was obtained.
- the unvulcanized physical properties, vulcanized physical properties (vulcanization temperature: 160 ° C, vulcanization time: 15 minutes) and abrasion resistance of the obtained rubber composition for grips were measured or evaluated. Table 12 shows the results.
- EPDM 100 100 100 100 100 100 100 100 100 100 Zinc oxide 3 3 3 3 3 Stearic acid 1 1 1 1 1 1 Silica (2) 40 40 40 40 4U 4U Polysiloxane 1.5 1.5
- Vulcanization accelerator TRA 0.5 0.5 0.5 U.0 U.0
- Vulcanization accelerator TS 0.5 0.5 0.5 0.5.5 0.5
- the rubber composition of the present invention can provide a rubber composition having excellent processability in the unvulcanized state and having various properties required for each application.
- a rubber composition for footwear has excellent processability when not vulcanized, and a vulcanizate having excellent abrasion resistance can be obtained by blending a silane coupling agent.
- the rubber composition for conveyor cover has excellent processability in the unvulcanized state, and a vulcanizate having excellent wear resistance can be obtained by blending a silane coupling agent. . Furthermore, a vulcanizate excellent in abrasion resistance and crack resistance can be obtained by replacing half of the polysiloxane as compared with the case where the silane-cutting agent is blended alone.
- the rubber composition for rolls has excellent processability in the unvulcanized state, and a vulcanizate with excellent wear resistance and adhesion to iron by incorporating a silane coupling agent. Obtainable.
- the rubber composition for hoses has excellent processability before vulcanization, and a vulcanizate excellent in modulus and abrasion resistance can be obtained by blending a silane coupling agent.
- the rubber composition for electric wires has excellent processability before vulcanization, and a vulcanizate having excellent wear resistance can be obtained by blending a silane coupling agent.
- the rubber composition for a rubberized cloth can obtain a vulcanizate excellent in abrasion resistance by blending a silane coupling agent while having excellent workability in an unvulcanized state.
- the rubber composition for grips has excellent processability when not vulcanized, and a vulcanizate having excellent wear resistance can be obtained by blending a silane coupling agent.
- the footwear, conveyor cover, roll, hose, electric wire, rubberized cloth, and grip of the present invention are partially or wholly made of the rubber composition, and are formed at the time of processing and molding. It is not only excellent in workability but also excellent in characteristics such as abrasion resistance according to the intended use.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Belt Conveyors (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/171,814 US6180703B1 (en) | 1997-02-28 | 1998-02-09 | Rubber composition |
EP98901555A EP0896024A4 (en) | 1997-02-28 | 1998-02-09 | RUBBER COMPOSITION |
KR1019980708618A KR100287053B1 (ko) | 1997-02-28 | 1998-02-09 | 고무 조성물_ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/46659 | 1997-02-28 | ||
JP9046659A JPH10237229A (ja) | 1997-02-28 | 1997-02-28 | ゴム組成物 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998038246A1 true WO1998038246A1 (fr) | 1998-09-03 |
Family
ID=12753467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/000520 WO1998038246A1 (fr) | 1997-02-28 | 1998-02-09 | Composition de caoutchouc |
Country Status (5)
Country | Link |
---|---|
US (1) | US6180703B1 (ja) |
EP (1) | EP0896024A4 (ja) |
JP (1) | JPH10237229A (ja) |
KR (1) | KR100287053B1 (ja) |
WO (1) | WO1998038246A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7658129B2 (en) | 2001-07-26 | 2010-02-09 | Irwin Industrial Tool Company | Method of making a composite utility blade |
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DE69632512T2 (de) * | 1995-08-31 | 2005-05-25 | The Yokohama Rubber Co., Ltd. | Polysiloxan-enthaltende Kautschukzusammensetzung |
US6329460B1 (en) * | 1999-04-16 | 2001-12-11 | The Yokohama Rubber Co., Ltd. | Polysiloxane composition and rubber composition and resin composition |
US6486239B2 (en) | 1999-12-31 | 2002-11-26 | Kumgang Korea Chemical Co., Ltd. | Polyester based coating composition for anti-stain PCM outside panel |
US6508354B2 (en) | 2000-06-30 | 2003-01-21 | The Gates Corporation | Endless belt |
KR20020027628A (ko) * | 2000-07-11 | 2002-04-13 | 나까니시 히로유끼 | 고무 조성물 및 그 용도 |
JP3586668B2 (ja) * | 2000-10-16 | 2004-11-10 | 株式会社サンケイ技研 | ゴム組成物 |
KR20020047892A (ko) * | 2000-12-14 | 2002-06-22 | 신형인 | 나노 클레이가 포함된 타이어용 고무조성물 |
ATE328223T1 (de) * | 2001-06-21 | 2006-06-15 | Habasit Ag | Monolithischer riemen mit ethylen-alpha olefin- copolymeren |
US6720062B2 (en) * | 2001-06-21 | 2004-04-13 | Hunter Jaw | Grip structure for racket or the like |
US20040157049A1 (en) * | 2001-06-21 | 2004-08-12 | Hunter Jaw | Grip for racket or the like |
JP3983071B2 (ja) * | 2002-03-20 | 2007-09-26 | 横浜ゴム株式会社 | スチールコード被覆用ゴム組成物 |
US20040010069A1 (en) * | 2002-06-27 | 2004-01-15 | Uniroyal Chemical Company, Inc. | Rubber compositions and methods for improving the mooney scorch value and cure rate |
US6749708B2 (en) * | 2002-08-22 | 2004-06-15 | Goodyear Tire & Rubber | Method for splicing a conveyor belt |
US20040191445A1 (en) * | 2003-03-27 | 2004-09-30 | Baranowski Thomas R. | Transparent closure cap liner having oxygen barrier properties |
JP4573523B2 (ja) * | 2003-12-17 | 2010-11-04 | 住友ゴム工業株式会社 | シリカマスターバッチ、その製造方法およびシリカマスターバッチを用いてなるゴム組成物 |
US7765720B2 (en) | 2007-01-12 | 2010-08-03 | Nike, Inc, | Outsole for an article of footwear |
JP4910942B2 (ja) * | 2007-08-22 | 2012-04-04 | 横浜ゴム株式会社 | ゴム組成物、繊維ゴム複合体およびホース |
JP5493548B2 (ja) * | 2009-07-29 | 2014-05-14 | 横浜ゴム株式会社 | 支承用ゴム組成物 |
IT1403426B1 (it) * | 2010-12-23 | 2013-10-17 | Bridgestone Corp | Mescola per battistrada comprendente trialcossimercaptoalchil-silani |
KR101186169B1 (ko) | 2011-02-21 | 2012-10-02 | 금호타이어 주식회사 | 타이어 트레드 고무조성물 |
WO2016208100A1 (ja) * | 2015-06-22 | 2016-12-29 | 株式会社ブリヂストン | ゴム組成物、積層体、及びコンベアベルト |
JP2017155177A (ja) * | 2016-03-04 | 2017-09-07 | 株式会社ブリヂストン | ゴム組成物、積層体、及びコンベアベルト |
CN106474696A (zh) * | 2016-12-31 | 2017-03-08 | 桂林电子科技大学 | 一种网球拍、羽毛球拍拍柄 |
EP3360677A1 (en) | 2017-02-10 | 2018-08-15 | Eaton Intelligent Power Limited | Non conductive rubber hose |
US10689516B2 (en) * | 2017-04-20 | 2020-06-23 | Otis Elevator Company | Polymer jacket material blends with improved flame resistance |
JP7121747B2 (ja) * | 2017-11-27 | 2022-08-18 | Nok株式会社 | Nbr組成物 |
JP7415141B2 (ja) * | 2019-11-25 | 2024-01-17 | 横浜ゴム株式会社 | ゴム組成物、及びゴム組成物の製造方法 |
JP2021121659A (ja) * | 2020-01-31 | 2021-08-26 | 横浜ゴム株式会社 | ホース用ゴム組成物およびホース |
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US4857593A (en) * | 1988-03-08 | 1989-08-15 | Union Carbide Corporation | Process for processing thermoplastic polymers |
US6015850A (en) * | 1995-03-17 | 2000-01-18 | Nippon Zeon Co., Ltd. | Rubber composition |
FR2743565B1 (fr) * | 1996-01-11 | 1998-02-20 | Rhone Poulenc Chimie | Utilisation d'une association de composes silicones comme agent de couplage dans les compositions d'elastomeres chargees de silice |
EP0846725A4 (en) * | 1996-06-26 | 2000-01-19 | Bridgestone Corp | RUBBER COMPOSITIONS |
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1997
- 1997-02-28 JP JP9046659A patent/JPH10237229A/ja not_active Withdrawn
-
1998
- 1998-02-09 KR KR1019980708618A patent/KR100287053B1/ko not_active IP Right Cessation
- 1998-02-09 WO PCT/JP1998/000520 patent/WO1998038246A1/ja not_active Application Discontinuation
- 1998-02-09 US US09/171,814 patent/US6180703B1/en not_active Expired - Fee Related
- 1998-02-09 EP EP98901555A patent/EP0896024A4/en not_active Withdrawn
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JPH0357630A (ja) * | 1989-07-25 | 1991-03-13 | Shin Etsu Chem Co Ltd | 自動車用二重ゴムホース |
JPH0598051A (ja) * | 1991-10-09 | 1993-04-20 | Asahi Chem Ind Co Ltd | ブロツク共重合体ペレツト |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7658129B2 (en) | 2001-07-26 | 2010-02-09 | Irwin Industrial Tool Company | Method of making a composite utility blade |
US9126259B2 (en) | 2001-07-26 | 2015-09-08 | American Saw & Mfg. Company | Methods of making utility knife blades |
Also Published As
Publication number | Publication date |
---|---|
EP0896024A4 (en) | 2000-12-20 |
EP0896024A1 (en) | 1999-02-10 |
JPH10237229A (ja) | 1998-09-08 |
KR100287053B1 (ko) | 2001-04-16 |
US6180703B1 (en) | 2001-01-30 |
KR20000065058A (ko) | 2000-11-06 |
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