WO2006062015A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2006062015A1 WO2006062015A1 PCT/JP2005/021959 JP2005021959W WO2006062015A1 WO 2006062015 A1 WO2006062015 A1 WO 2006062015A1 JP 2005021959 W JP2005021959 W JP 2005021959W WO 2006062015 A1 WO2006062015 A1 WO 2006062015A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- mass
- steel cord
- carcass
- general formula
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0607—Wires
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- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0007—Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
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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
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0666—Reinforcing cords for rubber or plastic articles the wires being characterised by an anti-corrosive or adhesion promoting coating
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/201—Wires or filaments characterised by a coating
- D07B2201/2011—Wires or filaments characterised by a coating comprising metals
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3085—Alloys, i.e. non ferrous
- D07B2205/3089—Brass, i.e. copper (Cu) and zinc (Zn) alloys
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2046—Tire cords
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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
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
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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
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10765—Characterized by belt or breaker structure
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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
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10765—Characterized by belt or breaker structure
- Y10T152/1081—Breaker or belt characterized by the chemical composition or physical properties of elastomer or the like
-
- 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
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
- Y10T152/10855—Characterized by the carcass, carcass material, or physical arrangement of the carcass materials
Definitions
- the present invention relates to a steel cord in a pneumatic tire, in particular, at least one of a carcass ply and at least one of a carcass ply and at least one of a Z or a belt layer formed of a steel cord layer and a belt thereof.
- the present invention relates to a pneumatic tire having improved durability by improving initial adhesiveness with a coating rubber, preferably initial adhesiveness and adhesive stability, and suppressing wet heat deterioration.
- an adhesive rubber composition containing resorcin or resorcin-formaldehyde resin obtained by condensing resorcin and formaldehyde.
- RF resin resorcin-formaldehyde resin
- a coating rubber see JP 2001-2 34140
- RF resin resorcinol or RF resin
- the moisture and heat-resistant adhesion between steel cord and coating rubber is dramatically improved. It is known to do.
- a mixed polyester having a resorcin skeleton having a weight average molecular weight of 3000 to 45000 An adhesive material such as Telka has been reported (see Japanese Patent Application Laid-Open No. 7-118621), and mixed polyester having a large molecular weight has better compatibility with rubber than RF resin. There is a point.
- resorcin and RF resin have extremely high polarity, so resorcin and RF resin are precipitated due to mixing, blending, storage, etc., which are poorly compatible with rubber. There is a risk of damaging the appearance of the rubber article. Furthermore, because of the occurrence of bloom, when the rubber composition is blended and then stored for a long period of time from vulcanization adhesion, problems will arise when the adhesiveness is reduced. And rubber compositions containing RF resin must be vulcanized and bonded quickly, which can impair the productivity of rubber articles. Moreover, the mixed polyester having a large molecular weight described in JP-A-7-118621 is not completely satisfactory, although the compatibility with rubber is improved as compared with RF resin.
- an object of the present invention is to solve the above-described problems of the prior art and to achieve a steel cord / composite composite that achieves both high initial adhesiveness and moisture and heat resistance adhesion between the steel cord and the coating rubber, or Steel cord / rubber composite with at least part of carcass and / or belt with improved initial adhesion between steel cord and coating rubber, moisture and heat resistance and adhesion stability, shortening vulcanization time
- Another object of the present invention is to provide a pneumatic tire having excellent durability.
- the present inventor applied a rubber composition containing a compound containing a specific substituted benzene ring to a coating rubber, and as a steel cord to be deposited, By applying a steel cord made by twisting multiple steel wires with the phosphorus content in the surface layer reduced to a specific range, the initial adhesion between the steel cord and the coating rubber and the heat and heat resistant adhesion are greatly improved.
- a rubber composition containing a compound having a specific structure or a composition containing the compound as a main component is applied to the coating rubber, and the amount of phosphorus in the surface layer region is specified as a steel cord to be applied in a specific range.
- the initial adhesion between the steel cord and the coating rubber is achieved by applying a steel cord made by twisting multiple steel wires with reduced weight. It found that wet heat adhesive property and adhesion stability is significantly improved, thereby completing the present invention.
- the pneumatic tire of the present invention includes a carcass made of one or more carcass plies, and a belt made of one or more belt layers disposed outside the carcass in the tire radial direction,
- a pneumatic tire including a layer of a steel cord in which at least one of the carcass and the belt is coated with a coating rubber, At least one of the carcass and the belt, the coating rubber covering the steel cord has 1 to 10 parts by mass of sulfur (B) and at least one hydroxyl group as a substituent with respect to 100 parts by mass of the rubber component (A).
- a rubber composition comprising 0.1 to 10 parts by mass of a compound (C) containing a 2-substituted or 3-substituted benzene ring,
- the steel cord is a steel wire with a brass tie around the surface of the wire, and the surface force of the brass tie is included as an oxide in the surface layer area up to a depth of 5 nm inside the wire in the radial direction. It is characterized by the use of a steel cord formed by twisting a plurality of steel fillers that suppress the amount of phosphorous to be 1.5 atomic% or less.
- the compound containing the substituted benzene ring is represented by the following general formula (I).
- X is a hydroxyl group, a carboxyl group or —COOC H (where m is 1 to 5 m 2m + l
- Y is a hydrogen, a hydroxyl group or a substituent represented by the following general formula (II) at the 2-position, 4-position, 5-position or 6-position. ]
- ⁇ and ⁇ are each independently a hydroxyl group, a carboxyl group or —COOC OC
- another pneumatic tire of the present invention includes a carcass made of one or more carcass plies, and a belt made of one or more belt layers disposed outside the carcass in the tire radial direction, Steel with at least one of carcass and belt covered with coating rubber
- a pneumatic tire including a layer of rubber cord
- At least one of the carcass and belt, the coating rubber covering the steel cord is composed of sulfur (B) 1 to 10 parts by mass with respect to 100 parts by mass of the rubber component (A) and represented by the following general formula (I II).
- R represents a divalent aliphatic group having 1 to 16 carbon atoms or a divalent aromatic group.
- the compound represented by the general formula (III) is a compound represented by the following general formula (IV).
- R represents a divalent aliphatic group having 1 to 16 carbon atoms or a divalent aromatic group.
- the other pneumatic tire of the present invention includes one force consisting of one or more carcass plies and one or more belt layer force belts arranged on the outer side in the tire radial direction of the carcass, In a pneumatic tire including a layer of a steel cord in which at least one of the carcass and the belt is coated with a coating rubber,
- the steel cord is a steel wire with a brass tie around the surface of the wire, and the surface force of the brass tie is included as an oxide in the surface layer area up to a depth of 5 nm inside the wire in the radial direction. It is characterized by the use of a steel cord formed by twisting a plurality of steel fillers that suppress the amount of phosphorous to be 1.5 atomic% or less.
- R represents a divalent aliphatic group having 1 to 16 carbon atoms or a divalent aromatic group, and n represents an integer of 2 to 6.
- the rubber yarn composition used for the coating rubber further contains 0.03 to 1 part by mass of an organic acid cobalt salt as a cobalt amount with respect to 100 parts by mass of the rubber component. Is preferred.
- the rubber component of the rubber yarn and the composition used for the coating rubber is composed of at least one of natural rubber (NR) and polyisoprene rubber (IR). Further, in the pneumatic tire of the present invention, it is also preferable that the rubber component of the rubber composition used for the coating rubber is made of 50 weight 0/0 or more natural rubber and the balance synthetic rubber.
- the rubber composition containing the compound (C) containing a specific substituted benzene ring is applied to the coating rubber, and the amount of phosphorus in the surface layer region is specified as the steel cord to be deposited.
- Steel cord with steel wire strength reduced to a range and steel cord with high initial adhesion between steel cord and coating rubber and high heat-and-moisture resistance, vulcanization using rubber composite for carcass and Z or belt It is possible to provide a pneumatic tire capable of reducing time and having excellent durability.
- the rubber composition containing the compound (D1) having a specific structure or the composition (D2) containing the compound as a main component is applied to the coating rubber and adhered.
- the Steel cord made of steel wire with reduced surface area phosphorus content in a specific range is applied as a steel cord, which provides high initial adhesion between steel cord and coating rubber, moisture and heat resistance and adhesion stability.
- Steel cord ⁇ It is possible to provide a pneumatic tire that can shorten the vulcanization time and has excellent durability by using the rubber composite for the carcass and z or the belt.
- the rubber composition applied to the above-mentioned coating rubber is low in viscosity due to the suppression of bloom, which is a problem of rubber compositions containing resorcin and RF resin. Since the processability is excellent, the pneumatic tire is also excellent in productivity.
- FIG. 1 is a cross-sectional view of an example of a pneumatic tire according to the present invention.
- FIG. 1 is a cross-sectional view showing an embodiment of the present invention, in which 1 is a tread portion, 2 is a pair of sidewall portions extending radially inward from the side of the tread portion 1, and 3 Indicates the bead portion connected to the inner end in the radial direction of the sidewall portion 2.
- the carcass 4 that constitutes the skeleton structure of the tire and reinforces each of the parts 1, 2, and 3 of the tire is constituted by one or more carcass plies, and is disposed in each bead part 3. Further, a main body portion extending in a toroidal manner between the respective bead cores 5, and a turn-up portion that is rolled up radially outward from the inner side to the outer side in the tire width direction around each bead core 5.
- the carcass 4 in the figure is a force composed of a single carcass ply. In the tire of the present invention, there may be a plurality of carcass plies! /.
- reference numeral 6 denotes a belt
- the belt 6 is composed of one or more belt layer covers disposed on the outer side in the tire radial direction of the crown portion of the carcass 4.
- the belt 6 in the figure is composed of two belt layers, but in the tire of the present invention, the number of belt layers is not limited to this.
- the pneumatic tire includes a steel cord layer in which at least one of the carcass 4 and the belt 6 is coated with a coating rubber. That is, at least one of the carcass plies of carcass 4 and at least one of the belt layers of Z or belt 6 are steel cord layers. If desired, one or more carcass plies and one or more belt layers may be steel cord layers.
- the coating rubber covering the steel cord has 10 parts by mass of sulfur) 110 parts by mass with respect to 100 parts by mass of the rubber component (A), and at least as a substituent.
- a rubber comprising a compound (C) containing a di- or tri-substituted benzene ring having one hydroxyl group, a compound (D1) having a specific structure or a composition containing the compound as a main component (D2) 0.1 10 parts by mass
- a steel wire in which the composition is used and the steel cord is brass-plated on the circumferential surface of the sheath, in a surface layer region from the surface of the brass-plating to a depth of 5 inward in the radial direction of the wire.
- the steel cord is made by twisting a plurality of steel wires made by suppressing the amount of phosphorus contained as oxide to 1.5 atomic% or less.
- a coating rubber By using as a coating rubber a rubber composition containing the compound (C) containing the substituted benzene ring, the compound (D1) having the above specific structure or the composition (D2) containing the compound as a main component.
- the steel cord and coating rubber can improve the heat and heat resistance of the steel cord, and the steel cord with the steel wire force with reduced phosphorus in the surface layer area can be used for the initial adhesion between the steel cord and the coating rubber. Can improve sex.
- the rubber composition containing the compound (C) containing the substituted benzene ring, the compound (D1) having the specific structure or the composition (D2) containing the compound as a main component is used for the coating rubber, and the surface layer region.
- the synergistic effect can greatly improve the wet heat and heat resistance between the steel cord and the coating rubber.
- the synergistic effect on the resistance to moist and heat adhesion includes the compound (C) containing the substituted benzene ring, the compound (D1) having the specific structure, or the composition (D2) containing the compound as a main component. This is far more than the sum of the effect obtained when using the rubber composition only for coating rubber and the effect obtained when using only the above steel cord made of steel wire with reduced phosphorus in the surface layer region. It is.
- the rubber component (A) of the rubber composition for coating rubber is not particularly limited as long as it exhibits rubber elasticity, but in addition to natural rubber (NR); vinyl aromatic hydrocarbon Z conjugate gel All known rubbers such as synthetic rubbers such as ethylene copolymers, polyisoprene rubber (IR), polybutadiene rubber (BR), butyl rubber (IIR), halogenated butyl rubber, and ethylene propylene rubber can be used. These rubber components may be used alone or in combination of two or more. Since the steel cord coating rubber requires fracture resistance in addition to adhesion, the rubber component is composed of at least one of natural rubber and polyisoprene rubber from the viewpoint of adhesive properties and fracture properties. 0/0 or more of the remainder comprises natural rubber and even preferably a synthetic rubber, preferably further comprises 75 mass 0/0 or more natural rubber. Among the synthetic rubbers, polyisoprene rubber is preferable.
- the rubber composition for coating rubber 1 to 10 parts by mass, preferably 3 to 8 parts by mass of sulfur (B) as a vulcanizing agent is blended with respect to 100 parts by mass of the rubber component. If the blending amount of sulfur is less than 1 part by mass, the adhesiveness to the steel cord is insufficient, while if it exceeds 10 parts by mass, an excessive adhesive layer is formed and the adhesiveness is lowered.
- the compound (C) containing a disubstituted or trisubstituted benzene ring having at least one hydroxyl group as a substituent, which is blended in the rubber composition for a coating rubber, is represented by the above general formula (I).
- X is a hydroxyl group, a carboxyl group or COOC H, where m is an integer of 1 to 5.
- Y is Benze m 2m + l
- p is an integer of 1-7.
- Specific examples of the compound of the formula (I) include resorcin, resorcin.
- the above compounds containing a substituted benzene ring may be used alone or in combination of two or more.
- the compounding amount of the compound (C) containing a substituted benzene ring is in the range of 0.1 to 10 parts by mass with respect to 100 parts by mass of the rubber component (A).
- the compounding amount of the compound containing the substituted benzene ring is less than 0.1 parts by mass, the effect of improving wet heat resistance is low.
- the compounding amount exceeds 10 parts by mass, the compound blooms and adhesiveness decreases.
- R in the formula represents a divalent aliphatic group having 1 to 16 carbon atoms or a divalent aromatic group.
- examples of the compound represented by the general formula (III) include a compound represented by the above general formula (IV).
- R in the general formula (IV) has the same meaning as R in the general formula (III).
- the divalent aliphatic group having 1 to 16 carbon atoms for example, a straight chain or a methylene group, an ethylene group, a butylene group, an isobutylene group, an octylene group, a 2-ethylhexylene group, etc.
- Straight chain or branched chain alkylene group such as branched chain alkylene group, beylene group (etylene group), butylene group, otaterene group, etc., or hydrogen atom of these alkylene group or alkylene group
- an alicyclic group such as an alkylene group, a alkylene group, and a cyclohexylene group substituted with a hydroxyl group or an amino group.
- the divalent aromatic group include an optionally substituted phenylene group and an optionally substituted naphthylene group.
- an alkylene group and a phenylene group having 2 to 10 carbon atoms are preferred, and an ethylene group, a butylene group, an octylene group and a phenylene group are particularly preferred.
- Specific examples of the compound of the above general formula (III) include bis (2-hydroxyphenol) malonate, bis (2-hydroxyphenol) succinate, bis (2-hydroxy fumarate).
- Phthalate ester bis (2-hydroxyphenol) maleate, bis (2-hydroxyphenol) malate, bis (2-hydroxyphenol) itaconate, bis (2) citraconic acid —Hydroxyphenol) ester, bis (2-hydroxyphenol) adipate, bis (2-hydroxyphenol) tartrate, bis (2-hydroxyphenol) azelate, bis sebacate ( 2-Hydroxyphenol) ester, hexane dicarboxylic acid bis (2-hydroxyphenol) ester, bis (terephthalate) bis (2-hydroxyphenol) ester Ter, isophthalic acid bis (2-hydroxyphenol) ester, malonic acid bis (3-hydroxyphenol) ester, succinic acid bis (3-hydroxyphenol) ester, fumanoleic acid bis (3-hydroxyphenol) ) Ester, maleic acid bis (3-hydroxyphenol) ester, malic acid bis (3-hydroxy
- the method for producing the compound represented by the general formula (III) is not particularly limited.
- R represents a divalent aliphatic group having 1 to 16 carbon atoms or a divalent aromatic group
- X ′ represents a halogen atom. Represents an atom.
- R in the general formula (VI) has the same meaning as R in the general formula (III), and X 'represents a halogen atom.
- a halogen atom a chlorine atom or a bromine atom is preferable.
- Examples of the compound represented by the general formula (VI) include malonic acid dichloride, succinic acid dichloride, fumaric acid dichloride, maleic acid dichloride, glutaric acid dichloride, adipic acid dichloride, suberic acid dichloride, azelaic acid dichloride, Aliphatic dicarboxylic acid dichlorides such as sebacic acid dichloride, 1,10-decanedicarboxylic acid dichloride, 1,12-dodecanedicarboxylic acid dichloride, 1,16-hexadecanedicarboxylic acid dichloride, cyclohexanedicarboxylic acid dichloride, cyclo Hexene dicarboxylic acid dichloride alicyclic dicarboxylic acid dichloride, terephthalic acid dichloride, isophthalic acid dichloride and other aromatic dicarboxylic acid dichloride, malonic acid dibromide, succinic acid dibromide, fumarate
- malonic acid dichloride succinic acid dichloride, adipic acid dichloride, azelaic acid dichloride, sebacic acid dichloride, terephthalic acid dichloride, isophthalic acid dichloride
- malonic acid dibromide succinic acid dibromide, adipic acid dibromide, Azelaic acid dibromide, sebacic acid dibromide, terephthalic acid dibromide, isophthalic acid dibromide, etc.
- the compounds represented by the general formula (VII) include catechol, resorcin and noids. And roquinone.
- the base used when the compound represented by the general formula (VI) and the compound represented by the general formula (VII) are reacted is usually pyridine, 13-picoline, N-methylmorpholine, Organic bases such as dimethylaniline, jetylaniline, trimethylamine, triethylamine, and tributylamine are used.
- a solvent can be used for the purpose of dissolving the raw material.
- the solvent the above-mentioned organic base may be used as it is, or another organic solvent that does not inhibit the reaction may be used.
- examples of such a solvent include ether solvents such as dimethyl ether and dioxane.
- reaction temperature for reacting the compound represented by the general formula (VI) with the compound represented by the general formula (VII) is usually -20 ° C to 120 ° C.
- the compound represented by the general formula (III) obtained by the above reaction can be isolated from the reaction mixture by a known method. That is, the organic base used in the reaction and the compound represented by the general formula (VII) by an operation such as distillation under reduced pressure, or a method of distilling off the organic solvent when an organic solvent is used in the reaction. , A method of reprecipitation by adding a poor solvent of the compound represented by formula (III) to the reaction mixture, water and water not miscible with the reaction mixture! ⁇ Add organic solvent and extract to organic layer And the like. In some cases, it may be purified by recrystallization.
- water is usually used as the poor solvent for the compound represented by the general formula (III).
- organic solvent immiscible with water include esters such as ethyl acetate and butyl acetate, and ketones such as methyl isobutyl ketone and diisoptyl ketone.
- a composition comprising the compound represented by the general formula (IV) and the compound represented by the general formula (V) is also a method similar to the method for isolating the compound represented by the general formula (III). Thus, it can be isolated from a reaction mixture containing them.
- the content of the compound represented by the general formula (IV) is more preferably 70 to 100% by mass, and still more preferably 80 to 100% by mass.
- the compounding amount of the compound represented by the general formula ( ⁇ ) is 100 masses of the rubber component. Is in the range of 0.1 to 10 parts by mass, preferably in the range of 0.3 to 6 parts by mass. When the compounding amount of the compound represented by the general formula (III) is less than 0.1 parts by mass with respect to 100 parts by mass of the rubber component, the effect of improving the wet heat resistance is low. Blooms and adhesion decreases.
- composition (D2) comprising the compound represented by the general formula (IV) and the compound represented by the general formula (V) is blended with the rubber composition for coating rubber
- the compounding amount of the composition is in the range of 0.1 to 10 parts by mass with respect to 100 parts by mass of the rubber component, and preferably in the range of 0.3 to 6 parts by mass.
- the blending amount of the composition comprising the compound represented by the general formula (IV) as a main component is less than 0.1 parts by mass with respect to 100 parts by mass of the rubber component, the effect of improving the heat and heat resistance is low.
- the amount is more than part by mass, the composition containing the compound represented by the general formula (IV) as a main component blooms and adhesiveness decreases.
- the compound (D1) having the above specific structure and the composition (D2) containing the compound as a main component are: Compared to rucine and RF oil, it is easy to mix with rubber components. For this reason, a rubber composition containing the compound or a composition containing the compound as a main component tends to be less likely to bloom than a rubber composition containing resorcin or RF resin. This is presumed to be because the polarity of the compound having the above specific structure and the compositional strength of the compound as a main component is lower than that of resorcin or RF resin.
- a rubber composition containing a compound having the above specific structure or a composition containing the compound as a main component exhibits stable adhesiveness regardless of the storage period with little change over time. Furthermore, in the rubber composition containing the compound having the above specific structure or the composition containing the compound as a main component, the occurrence of bloom, which is a problem of the rubber composition containing resorcin or RF resin, is suppressed. In addition, mu-one viscosity is sufficiently low and processability is excellent.
- the rubber composition used for the coating rubber preferably further comprises an organic acid cobalt salt as an adhesion promoter in an amount of 0.03 to 1 part by weight as a cobalt amount per 100 parts by weight of the rubber component. ,. If the amount of the organic acid cobalt salt is less than 0.03 parts by mass as the amount of cobalt, the adhesiveness between the coating rubber and the steel cord is insufficient, and if it exceeds 1 part by mass, the aging characteristics of the coating rubber are too poor.
- the organic acid cobalt salt include cobalt naphthenate, cobalt stearate, cobalt neodecanoate, cobalt rosinate, cobalt versatate and cobalt tall oil.
- the organic acid cobalt salt may be a complex salt in which a part of the organic acid is replaced with boric acid or the like. Specifically, Manobond (trademark: manufactured by OMG) can be mentioned.
- the rubber composition for coating rubber includes the rubber component (A), sulfur (B), a compound (C) containing a substituted benzene ring, a compound (D1) having a specific structure, and the compound as a main component.
- Composition (D2) organic acid cobalt salts, fillers such as carbon black and silica, silane coupling agents for silica, vulcanization accelerators, softeners such as aroma oil, hexamethylenetetramine, pentamethoxymethylmelamine
- methylene donors such as methoxymethyl melamine, such as hexamethylenemethylmelamine, zinc oxide, stearic acid, vulcanization accelerator, vulcanization accelerator, anti-aging agent, ozone deterioration inhibitor
- the compounding agent to be used can be appropriately compounded in a range without impairing the effects of the present invention.
- the steel cord is a steel wire with a brass tie around the wire.
- the surface force of the brass plating Twist a number of steel wires that suppress the amount of phosphorus contained as an oxide in the surface layer area up to a depth of 5 nm inside the wire in the radial direction to 1.5 atomic% or less It is configured together. If the amount of phosphorus in the table layer region of the steel wire subjected to the brass plated exceeds 1.5 atomic 0/0, since the contact Chakusokudo the coating rubber of the above slower, to ensure a desired initial adhesion In addition, the heat and heat resistance cannot be sufficiently improved.
- the amount of phosphorus contained as an oxide in the surface layer region can be measured according to X-ray photoelectron spectroscopy. That is, when the number of atoms of all elements and the number of phosphorus atoms in the oxide are detected in the photoelectron escape depth region measured according to X-ray photoelectron spectroscopy, and the number of atoms of all elements is 100
- the number of phosphorus atoms in the oxide is indicated by an index, and is defined as atomic% of phosphorus contained in the oxide in the region.
- the surface layer region up to a depth of 5 nm can be recognized by the electron kinetic energy and escape depth shown in general literature on solid-state photoelectron spectroscopy.
- the average thickness of the steel wire brass plating layer is preferably in the range of 0.13 to 0.35 ⁇ m. If the average thickness of the plating layer is less than 0.13 m, the exposed part of the iron base increases and the initial adhesion is impaired, and if it exceeds 0.35 m, the adhesion reaction proceeds excessively due to heat during use of the tire. Only a weak bond can be obtained.
- the ratio of copper to the total amount of copper and zinc in the steel wire brass plating layer is preferably in the range of 60 to 70% by weight.
- the ratio of copper to the total amount of copper and zinc in the surface layer region is A range of 15 to 45 atomic% is preferred. If the ratio of copper to the total amount of copper and zinc in the entire plating layer is less than 60% by weight, the wire drawing deteriorates and the wire breakage impedes productivity, making mass production difficult, and reducing the copper content in the surface layer region to 15 atomic%. If it exceeds 70% by weight, the heat-and-moisture resistance decreases, and it becomes impossible to maintain sufficient durability against the environment where the tire is exposed, and the copper content in the surface layer region Is difficult to control below 45 atomic%.
- the surface area If the ratio of copper to the total amount of copper and zinc is less than 15 atomic%, the adhesion reaction with the coating rubber becomes poor even if the amount of phosphorus in the surface layer region is limited to 1.5 atomic% or less as described above. It becomes difficult to ensure adhesion with rubber, and when it exceeds 45 atomic%, the heat-and-moisture resistance decreases.
- the diameter of the steel wire is preferably in the range of 0.40 mm or less. If the diameter of the steel wire exceeds 0.40 mm, when the tire is repeatedly strained under bending deformation, the surface strain becomes large, and buckling is likely to occur.
- the steel wire is manufactured, for example, by applying a drawing force to a wire having a diameter of about 5 mm.
- a drawing force By adjusting the pass schedule of the wire drawing force, the shape and angle of the die entrance and approach, the material of the die, the lubricant composition, and the like alone or in combination as appropriate, the acidity in the surface layer region is adjusted.
- the amount of phosphorus contained in the product can be suppressed to 1.5 atomic% or less.
- a lubricant containing an extreme pressure additive is used in the same manner as usual, and the final pass or the number of subsequent stages including the final pass is about 20 dies in the final wire drawing process.
- a steel cord used for the carcass 4 and / or belt 6 of the tire of the present invention is obtained by twisting a plurality of steel wires obtained in this way.
- the steel cord size, number of twists, twisting conditions, and the like are appropriately selected according to the required performance of the tire.
- the method for preparing the rubber composition for the coating rubber is not particularly limited.
- a compound having sulfur (B) and the above substituted benzene ring in the rubber component (A) using a Banbury mixer or a roll It can be prepared by kneading C), the compound (D1) having the above specific structure, the composition (D2) containing the compound as a main component, an organic acid cobalt salt and various compounding agents.
- the kneaded rubber composition is processed into a sheet shape and further molded into a state where two cast rubber sheets are sandwiched between steel cords to form a carcass ply and a belt layer.
- the formed belt layer is laminated on the outer side in the tire radial direction of the carcass according to a conventional method, and constitutes the pneumatic tire of the present invention together with other members.
- the tread tread portion, sidewall portion, and bead portion of the pneumatic tire of the present invention are those portions of a normal tire.
- the material, shape, and arrangement used in the above can be appropriately employed.
- an inert gas such as nitrogen, argon, helium, etc. can be used in addition to normal or air whose oxygen partial pressure is adjusted.
- Controls the amount of phosphorus contained in the oxide in the surface layer by controlling the drawing schedule of the wire drawing force, the shape and angle of the die entrance and approach, the die material and the lubricant composition.
- Steel wire was made. Then, by twisting a plurality of the steel Ruwaiya obtained, IX 5 structure, wire diameter 0.25 mm, brass-plated produce steel cord (Cu: 37 mass 0/0: 63 Mass 0/0, Zn) did.
- the tire force belt layer was taken out, the steel cord in the belt layer was pulled at a speed of 50 mm / min with a tensile tester, and the exposed steel cord rubber The coating state was visually observed, and the coverage was displayed as 0 to 100% as an index of initial adhesiveness. The larger the value, the better the initial adhesiveness.
- test tire is left in a constant temperature and humidity chamber maintained at 100 ° C and 95% RH for 5 weeks, and then the belt layer is removed from the tire and the steel cord in the belt layer is removed by a tensile tester at 50 mm / min.
- the rubber coating of the exposed steel cord was visually observed and The coverage was displayed as 0 to 100% and used as an index of wet heat adhesion. The larger the value, the better the moisture and heat resistance adhesion.
- a solution obtained by dissolving 330.6 g (3.0 mol) of resorcin in 600.0 g of pyridine was kept dropwise at 15 ° C. or lower on an ice bath, and 54.9 g (0.30 mol) of adiboyl chloride was gradually added dropwise thereto. After completion of the dropwise addition, the resulting reaction mixture was warmed to room temperature and allowed to stand overnight to complete the reaction. From the reaction mixture, pyridine was distilled off under reduced pressure, 1200 g of water was added to the residue, and the mixture was cooled with ice to precipitate a precipitate. The deposited precipitate was filtered and washed with water, and the obtained wet body was dried under reduced pressure to obtain 84 g of white to light yellow powder.
- NMR ⁇ vector data are shown in Tables 2-1 and 2-2.
- the amount of bis (3-hydroxyphenyl) adipate in this powder was 89 mass 0 /. Met.
- the compound represented by the following formula (VIII) was identified by LC MS.
- n 2: 551.1 [M + H] +, 568.2 [M + NH4] +
- n 3: 771.2 [M + H] +, 788.2 [M + NH4] +
- HPLC analysis conditions are as follows.
- the obtained organic layer was washed 5 times with cold water and then dried over magnesium sulfate. Thereafter, 500 g of toluene was added to the viscous product obtained by distilling off the ethyl acetate, and the mixture was crystallized, filtered, washed with toluene, and then sludged with 1 L of water twice.
- the obtained wet substance was dissolved in 100 g of methanol, and 1 L of water was added for reprecipitation, followed by filtration, washing and drying to obtain 82.3 g of a pale yellow powder.
- HPLC analysis it was found that the main component of the powder was 91.0% by area. This powder contained 0.7% by mass of resorcin.
- the main component in the powder was bis (3-hydroxyphenol) succinate.
- the obtained wet substance is dissolved in 200 g of methanol, discharged into 2 L of water, the resulting precipitate is filtered and washed with water, and the obtained wet substance is dried under reduced pressure to obtain 130.2 g of beige powder. Obtained.
- the main component of the powder was a component corresponding to 89.4 area%.
- the powder contained 0.8% by mass of resorcin.
- the main component in the powder was bis (3-hydroxyphenyl) ester isophthalate.
- the green tire after molding is left at 40 ° C and 80% RH for 7 days, then the belt layer is taken out from the vulcanized tire, and the steel cord in the belt layer is pulled at a speed of 50 mm / min with a tensile testing machine.
- the rubber coating state of the exposed steel cord was visually observed, and the coverage was displayed as 0 to 100% as an index of adhesion stability. The larger the value, the higher the adhesion stability and the better.
- RF resin is as follows: And manufactured.
- the mixed polyester was synthesized as follows according to Example 1 described in the above patent.
- Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Natural rubber 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 One-horn rack (N326) 60 60 60 60 60 60 60 60 60 60 60 60 60 60
- the tire of Comparative Example 6 or 7 using a rubber composition containing resorcin or RF resin as the coating rubber of the belt layer has improved wet heat adhesion as compared with the tire of Comparative Example 5. Further, the rubber composition used for the coating rubber had a large increase in mu-one viscosity, and the bloom resistance was poor and the adhesion stability was also deteriorated. Further, the tire of Comparative Example 9 using the rubber composition containing the mixed polyester as the coating rubber for the belt layer had insufficient initial adhesiveness and wet heat adhesiveness.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006547964A JP4842145B2 (ja) | 2004-12-08 | 2005-11-30 | 空気入りタイヤ |
US11/720,625 US7823614B2 (en) | 2004-12-08 | 2005-11-30 | Pneumatic tire |
EP05811280A EP1820667B1 (en) | 2004-12-08 | 2005-11-30 | Pneumatic tire |
CN2005800423630A CN101076457B (zh) | 2004-12-08 | 2005-11-30 | 充气轮胎 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004355334 | 2004-12-08 | ||
JP2004-355334 | 2004-12-08 | ||
JP2005202716 | 2005-07-12 | ||
JP2005-202716 | 2005-07-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006062015A1 true WO2006062015A1 (ja) | 2006-06-15 |
Family
ID=36577844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021959 WO2006062015A1 (ja) | 2004-12-08 | 2005-11-30 | 空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7823614B2 (ja) |
EP (1) | EP1820667B1 (ja) |
JP (1) | JP4842145B2 (ja) |
CN (1) | CN101076457B (ja) |
WO (1) | WO2006062015A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007084712A (ja) * | 2005-09-22 | 2007-04-05 | Bridgestone Corp | 空気入りタイヤ |
JP2007084706A (ja) * | 2005-09-22 | 2007-04-05 | Bridgestone Corp | ゴム組成物 |
JP2008138117A (ja) * | 2006-12-04 | 2008-06-19 | Bridgestone Corp | 空気入りタイヤ |
JP2008138119A (ja) * | 2006-12-04 | 2008-06-19 | Bridgestone Corp | ゴム組成物 |
US20120101207A1 (en) * | 2009-07-01 | 2012-04-26 | Bridgestone Corporation | Rubber-steel cord composite |
JP2012251028A (ja) * | 2011-05-31 | 2012-12-20 | Bridgestone Corp | 空気入りタイヤ |
WO2016052450A1 (ja) * | 2014-10-01 | 2016-04-07 | 株式会社ブリヂストン | 金属コード-ゴム複合体 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2558763T3 (es) * | 2004-03-12 | 2016-02-08 | Mitsui Chemicals, Inc. | Compuesto y composición que contiene el mismo |
US7491840B2 (en) | 2004-03-12 | 2009-02-17 | Mitsui Chemicals, Inc. | Compound and composition containing the same |
FR2916202B1 (fr) * | 2007-05-15 | 2009-07-17 | Michelin Soc Tech | Composition de caoutchouc pour pneumatique comportant un plastifiant diester |
FR2966384A1 (fr) * | 2010-10-22 | 2012-04-27 | Michelin Soc Tech | Pneumatique comportant une zone tampon entre l'armature de carcasse et l'armature de sommet |
KR101508683B1 (ko) * | 2014-11-10 | 2015-04-07 | 홍덕산업(주) | 고무 보강용 스틸코드 및 그 제조방법 |
BR112017023236A2 (pt) | 2015-04-30 | 2018-08-07 | Bridgestone Americas Tire Operations Llc | cordonéis têxteis recobertos com uma composição de borracha, pneu, e método para aumentar a cobertura de cordonéis envelhecidos em cordonéis têxteis recobertos com borracha |
FR3043591A1 (fr) * | 2015-11-13 | 2017-05-19 | Michelin & Cie | Composite a base de composant metallique et d'une matrice polymere fonctionnelle |
RU206932U1 (ru) * | 2021-02-17 | 2021-10-01 | Акционерное общество «Научно-исследовательский институт резиновых и полимерных изделий» | Покрышка пневматической шины |
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JPS55152730A (en) * | 1979-05-17 | 1980-11-28 | Yokohama Rubber Co Ltd:The | Rubber composition |
JPH07118621A (ja) * | 1993-10-19 | 1995-05-09 | Sumitomo Chem Co Ltd | 接着剤およびそれのゴムへの適用 |
JP2001234140A (ja) * | 2000-02-25 | 2001-08-28 | Bridgestone Corp | 接着性ゴム組成物 |
JP2002338739A (ja) * | 2001-05-17 | 2002-11-27 | Toyo Tire & Rubber Co Ltd | タイヤコード被覆用ゴム組成物 |
JP2004083766A (ja) * | 2002-08-28 | 2004-03-18 | Bridgestone Corp | ゴム−スチールコード複合体およびそれを用いた空気入りタイヤ |
JP2004082878A (ja) * | 2002-08-27 | 2004-03-18 | Bridgestone Corp | ゴム−スチールコード複合体およびそれを用いたタイヤ |
JP2005290373A (ja) * | 2004-03-12 | 2005-10-20 | Bridgestone Corp | ゴム組成物及びそれを用いた空気入りタイヤ |
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JPS5452188A (en) * | 1977-10-03 | 1979-04-24 | Sumitomo Rubber Ind | Rubber composition for adhering steel cord |
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US5394919A (en) * | 1993-06-18 | 1995-03-07 | The Goodyear Tire & Rubber Company | Tire with rubber/cord belt laminate |
US6401781B1 (en) * | 1998-01-20 | 2002-06-11 | Toyo Tire & Rubber Co., Ltd. | Pneumatic radial tire with under-belt pad and specified intermediate rubber layer rubber compound |
EP1365064B1 (en) * | 2001-02-21 | 2016-06-15 | Bridgestone Corporation | Steel wire and steel cord for reinforcing rubber article, and tire |
JP4497788B2 (ja) * | 2002-04-09 | 2010-07-07 | 株式会社ブリヂストン | ゴム物品補強用スチールワイヤおよびゴム物品補強用スチールコードとタイヤ |
JP3967184B2 (ja) * | 2002-04-25 | 2007-08-29 | 株式会社ブリヂストン | ゴム物品補強用スチールワイヤおよびゴム物品補強用スチールコードとタイヤ |
JP2003342883A (ja) * | 2002-05-29 | 2003-12-03 | Bridgestone Corp | ゴム物品補強用スチールワイヤおよびゴム物品補強用スチールコードとタイヤ |
-
2005
- 2005-11-30 EP EP05811280A patent/EP1820667B1/en not_active Expired - Fee Related
- 2005-11-30 WO PCT/JP2005/021959 patent/WO2006062015A1/ja active Application Filing
- 2005-11-30 US US11/720,625 patent/US7823614B2/en not_active Expired - Fee Related
- 2005-11-30 JP JP2006547964A patent/JP4842145B2/ja not_active Expired - Fee Related
- 2005-11-30 CN CN2005800423630A patent/CN101076457B/zh not_active Expired - Fee Related
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JPS55152730A (en) * | 1979-05-17 | 1980-11-28 | Yokohama Rubber Co Ltd:The | Rubber composition |
JPH07118621A (ja) * | 1993-10-19 | 1995-05-09 | Sumitomo Chem Co Ltd | 接着剤およびそれのゴムへの適用 |
JP2001234140A (ja) * | 2000-02-25 | 2001-08-28 | Bridgestone Corp | 接着性ゴム組成物 |
JP2002338739A (ja) * | 2001-05-17 | 2002-11-27 | Toyo Tire & Rubber Co Ltd | タイヤコード被覆用ゴム組成物 |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007084712A (ja) * | 2005-09-22 | 2007-04-05 | Bridgestone Corp | 空気入りタイヤ |
JP2007084706A (ja) * | 2005-09-22 | 2007-04-05 | Bridgestone Corp | ゴム組成物 |
JP2008138117A (ja) * | 2006-12-04 | 2008-06-19 | Bridgestone Corp | 空気入りタイヤ |
JP2008138119A (ja) * | 2006-12-04 | 2008-06-19 | Bridgestone Corp | ゴム組成物 |
US20120101207A1 (en) * | 2009-07-01 | 2012-04-26 | Bridgestone Corporation | Rubber-steel cord composite |
US8859653B2 (en) * | 2009-07-01 | 2014-10-14 | Bridgestone Corporation | Rubber-steel cord composite |
JP2012251028A (ja) * | 2011-05-31 | 2012-12-20 | Bridgestone Corp | 空気入りタイヤ |
WO2016052450A1 (ja) * | 2014-10-01 | 2016-04-07 | 株式会社ブリヂストン | 金属コード-ゴム複合体 |
Also Published As
Publication number | Publication date |
---|---|
EP1820667B1 (en) | 2012-02-29 |
EP1820667A1 (en) | 2007-08-22 |
JPWO2006062015A1 (ja) | 2008-06-05 |
CN101076457A (zh) | 2007-11-21 |
JP4842145B2 (ja) | 2011-12-21 |
US7823614B2 (en) | 2010-11-02 |
US20090229728A1 (en) | 2009-09-17 |
EP1820667A4 (en) | 2011-01-12 |
CN101076457B (zh) | 2011-07-27 |
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