WO2003064525A1 - Composition de caoutchouc acrylique vulcanisable et vulcanisat - Google Patents
Composition de caoutchouc acrylique vulcanisable et vulcanisat Download PDFInfo
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- WO2003064525A1 WO2003064525A1 PCT/JP2003/000932 JP0300932W WO03064525A1 WO 2003064525 A1 WO2003064525 A1 WO 2003064525A1 JP 0300932 W JP0300932 W JP 0300932W WO 03064525 A1 WO03064525 A1 WO 03064525A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
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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
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
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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
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09K2200/0625—Polyacrylic esters or derivatives thereof
Definitions
- the present invention relates to a vulcanizable acrylic rubber composition that does not easily adhere to a metal surface and does not easily cause scorch, and a vulcanizate of the composition having excellent metal corrosion resistance and oil resistance.
- Acrylic rubber has excellent heat resistance, oil resistance, etc., and is used for metal materials such as seal materials, hose materials, vibration-proof materials, tube materials, belt materials, and bush materials in automobile-related fields. It is widely used as a rubber member used for parts that come into contact with oil and the like. Such acrylic rubbers are required to have excellent heat resistance and cold resistance as well as low compression set, and furthermore, those having excellent metal corrosion resistance and oil resistance as well as these performances are required. It is supposed to be.
- acrylic rubber has a problem that scorch is likely to occur due to short scout time. In order to make scorch less likely to occur, the demand for longer scorch time is increasing.
- the unvulcanized acrylic rubber adheres to the metal surface inside the kneader such as a bumper or a roll at the time of kneading, and requires post-processing of kneading. I have.
- an internal release agent such as an ester wax, a paraffin wax, a metal salt of an organic carboxylic acid, and silicone oil is added to an acrylic rubber.
- an internal release agent such as an ester wax, a paraffin wax, a metal salt of an organic carboxylic acid, and silicone oil is added to an acrylic rubber.
- An object of the present invention is to provide a vulcanizable acrylic rubber composition which is excellent in kneading properties, hardly causes scorch during vulcanization, and in which the obtained vulcanized product is excellent in metal corrosion resistance and oil resistance.
- a vulcanizable acrylic rubber composition obtained by combining an acryl rubber having a specific composition, a specific vulcanizing agent and a specific vulcanization accelerator, Adhesion to metal surface is difficult. Scorch hardly occurs during vulcanization.
- the vulcanizates of this vulcanizable acrylic rubber composition have properties such as mechanical strength, heat resistance, cold resistance, and compression set that are equal to or higher than those of conventional products. The present invention was found to be superior to that of the present invention, and based on this finding, the present invention was completed.
- an acrylic rubber containing (A) an acrylate monomer (a) unit and a carboxyl group-containing ethylenically unsaturated monomer (b) unit, (B) 0.05 to 5 parts by weight of polyvalent primary amine vulcanizing agent, and (C) aliphatic monovalent secondary amine compound (C-1) and aliphatic monovalent tertiary amine compound (C-2) At least one aliphatic monoamine compound selected from the group consisting of 0.5 to 5.5 parts by weight, and a total of the monomer (a) unit and the monomer (b) unit in the acryl rubber (A)
- a vulcanizable acrylic rubber composition is provided in which the amount is at least 80% by weight of the total monomer units and the monomer (a) unit accounts for 90 to 99.9% by weight based on the total amount.
- a vulcanizate obtained by vulcanizing the vulcanizable acrylic rubber composition comprises 100% by weight of an acrylic rubber (A) containing an ester acrylate monomer (a) unit and a carboxyl group-containing ethylenically unsaturated monomer (b) unit.
- the acrylic rubber (A) used here contains an acrylate monomer (a) unit and a carboxyl group-containing ethylenically unsaturated monomer (b) unit as the main constituent units ( total amount of the main constituent units).
- [(a) + (b)] accounts for at least 80% by weight of all monomer units, and the total amount of the main structural units [(a) + (b)] is based on the amount of the acrylate monomer (a )
- the unit occupies 90 to 99.9% by weight.
- Acrylic rubber (A) contains a force Rupokishiru group, the amount is preferably 5 X 10_ 4 ⁇ 4x lO ⁇ ephr. More preferably 2 x 10 _3 ⁇ 2x 10- 1 ephr , particularly preferably 4 x 10 " 3 to 110—'ephr. If the amount of lipoxyl groups in the acrylic rubber (A) is too small, the vulcanizate will not be sufficiently vulcanized and the shape of the vulcanized product may not be maintained. An object may become hard and lose rubber elasticity.
- an alkyl acrylate monomer alone or a combination of an alkoxyalkyl acrylate monomer and an alkyl acrylate monomer is preferable. Among them, the latter combination is particularly preferred.
- alkyl acrylate monomer those having an alkyl group having 1 to 8 carbon atoms are preferred. Specific examples thereof include methyl acrylate, ethyl acrylate, n-propyl acrylate, n-butyl acrylate, and acrylic Isopropyl acrylate, isobutyl acrylate, n-hexyl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, and the like. Particularly, ethyl acrylate and n_butyl acrylate are preferred.
- alkoxyalkyl acrylate monomer those having an alkoxyalkyl group having 2 to 8 carbon atoms are preferable. Specific examples include methoxymethyl acrylate, ethoxymethyl acrylate, 2-ethoxyhexyl acrylate, 2-butoxyshethyl acrylate, 2-methoxyethyl acrylate, 2-propoxyshethyl acrylate, 3-methoxypropyl acrylate, 4-methoxybutyl acid and the like. In particular, acrylic acid 2 Monoethoxyl and 2-methoxyethyl acrylate are preferred.
- the acrylate monomer (a) unit is an alkoxy acrylate having an alkoxyalkyl group having 2 to 8 carbon atoms. It is preferably composed of 10 to 70% by weight of an alkyl acrylate monomer and 90 to 30% by weight of an alkyl acrylate monomer having an alkyl group having 1 to 8 carbon atoms. If the alkyl acrylate unit is too small, the tensile strength and elongation may be inferior, while if too large, the cold resistance or oil resistance may be inferior.
- Examples of the carboxyl group-containing ethylenically unsaturated monomer (b) include mono- and polycarboxylic acids such as acrylic acid, methacrylic acid, ethacrylic acid, itaconic acid, maleic acid, fumaric acid, and citraconic acid.
- Dicarboxylic acids having an alkyl group having 1 to 8 carbon atoms in the ester group such as monomethyl maleate, monoethyl maleate, mono-n-butyl maleate, monomethyl fumarate, monoethyl fumarate, and mono-n-butyl fumarate; Acid monoalkyl ester monomers; and the like.
- the carboxylic acid group may be a carboxylic anhydride group, and carboxylic anhydride monomers such as maleic anhydride and citraconic anhydride can also be used as the monomer (b).
- carboxylic anhydride monomers such as maleic anhydride and citraconic anhydride can also be used as the monomer (b).
- monoethyl maleate, mono-n-butyl maleate, monoethyl fumarate and mono-n-butyl fumarate are preferred.
- the total amount of the main structural units [(a) + (b)] is at least 80% by weight, preferably 90% by weight, more preferably 95% by weight of all monomer units. . If the total amount of the main constituent units is too small, there may be a problem that properties of rubber such as rubber elasticity are lost.
- the unit amount of the monomer (a) is 90-99.9 weight 0 / based on the total amount of the main constituent units [(a) + (b)]. Occupies preferably 92 to 99.7% by weight, more preferably 94 to 99.5% by weight, and the unit amount of the monomer (b) is 0.1 to 10% by weight, preferably 0.3 to 8%. % By weight, more preferably 0.5 to 6% by weight. If the amount of the monomer (a) is too small relative to the total amount of the main constituent units, the strength and elongation of the vulcanized product will be poor, while if it is too large, the vulcanized product may not be sufficiently vulcanized.
- the acrylic rubber (A) used in the present invention is copolymerizable in addition to the main structural unit. It may contain a functional monomer unit.
- the copolymerizable monomer include a conjugated gen monomer, a non-conjugated gen monomer, an aromatic vinyl monomer, «. ⁇ -ethylenically unsaturated nitrile monomer, and an amide group-containing monomer.
- examples thereof include (meth) acrylic monomers, polyfunctional di (meth) acrylic monomers, and aliphatic vinyl monomers.
- the conjugated diene monomer include 1,3-butadiene, butadiene, chloroprene, and piperylene.
- non-covalent gen monomers examples include 1,2-butadiene, 1,4-pentadiene, dicyclopentadiene, norbornene, ethylidene norbornene, hexagen, norbornadiene, and the like.
- aromatic vinyl monomer examples include styrene, o-methylstyrene, and divinylbenzene.
- monoethylenically unsaturated nitrile monomer include acrylonitrile and methacrylonitrile.
- examples of the amide group-containing (meth) acrylic monomer examples include acrylamide and methacrylamide.
- Examples of the polyfunctional di (meth) acrylic monomer include ethylene glycol diacrylate, propylene glycol diacrylate, ethylene glycol dimethacrylate, and propylene glycol dimethacrylate.
- Examples of the aliphatic vinyl monomer include vinyl chloride, vinylidene chloride, vinyl acetate, ethyl vinyl ether, and butyl vinyl ether.
- the amount of these copolymerizable monomer units is 20% by weight or less, preferably 10% by weight or less, more preferably 5% by weight or less of the total monomer units.
- the viscosity (ML 1 +4 , 100 ° C.) of the acrylic rubber ( ⁇ ) is preferably “I 0 to 70, more preferably 20 to 60, particularly preferably 30 to 50. If the knee viscosity is too low, the formability and the mechanical strength of the vulcanizate may be poor, and if it is too high, the formability may be poor.
- the polyvalent primary amine vulcanizing agent (B) used in the present invention is a compound having a plurality of primary amino groups or a salt thereof, and functions as a vulcanizing agent for the acrylic rubber (A).
- the polyvalent primary amine vulcanizing agent (B) is usually selected from aliphatic polyvalent primary amine compounds, aromatic polyvalent primary amine compounds, and salts thereof. Preferred are divalent primary amine compounds, trivalent primary amine compounds and salts thereof, and particularly preferred are divalent primary amine compounds and salts thereof. Most preferred are aliphatic divalent primary amine compounds, aromatic divalent primary amine compounds, or salts thereof.
- the polyvalent primary amine vulcanizing agent (B) Seeds may be used in combination.
- polyvalent primary amine vulcanizing agent (B) examples include aliphatic divalent primary amine compounds such as hexamethylene diamine, ethylenediamine and cyclohexanediamine; hexamethylenediamine carbamate, ethylenediamine Salts of aliphatic divalent primary amine compounds such as mincarbamate; aliphatic trivalent primary amine compounds such as bis (hexamethylene) triamine, 3, 3′-diaminodipropylamine and cyclohexanetriamine; 4, 4 ′ —Methylene dianiline, m-phenylenediamine, 4, 4′-diaminodiphenyl ether, 3, 4′-diaminodiphenyl ether, 4, 4 ′-(m-phenylenediisopropylidene) dianiline, 4, 4 '1- (p-phenylenediisopropylidene) dianiline, 2,2'-bis [4- (4- (4
- the blending amount of the polyvalent primary amine vulcanizing agent (B) with respect to 100 parts by weight of the acrylic rubber (A) is 0.05 to 5 parts by weight, preferably 0.1 to 4 parts by weight, more preferably 0.2 to 3 parts by weight. Parts by weight. If the amount of the polyvalent primary amine vulcanizing agent (B) is too large, the vulcanized product becomes too hard, the elongation of the vulcanized product decreases, or the elongation after heat load becomes too small. There is. Conversely, if the amount is too small, the strength of the vulcanized product may be significantly reduced, or the elongation change and the tensile strength change after heat load may be too large.
- the aliphatic-valent amine compound (C) used in the present invention is selected from aliphatic monovalent secondary amine compounds (C-1) and aliphatic monovalent tertiary amine compounds (C-2). It is a vulcanization accelerator that has the function of accelerating the vulcanization reaction of acrylic rubber (A) by the primary amine vulcanizing agent (B).
- An aliphatic monovalent secondary amine compound (C-11) is a compound in which two hydrogen atoms of ammonia have been substituted with an aliphatic hydrocarbon group.
- the aliphatic hydrocarbon group substituted with a hydrogen atom preferably has 1 to 30 carbon atoms, and more preferably has 8 to 20 carbon atoms. It is.
- Specific examples of the aliphatic monovalent secondary amine compound (C-11) include dimethylamine, getylamine, dipropylamine, diarylamine, diisopropylamine, di-n-butylamine, di-t-butylamine, and di-secylamine.
- dioctylamine dioctylamine, didecylamine, didodecylamine, ditetradecylamine, dicetylamine, dioctadecylamine, dicis 19-year-old cutadecenylamine, dinonadecylamine are preferred.
- the aliphatic monovalent tertiary amine compound (C-12) used in the present invention is a compound obtained by substituting all three hydrogen atoms of ammonia with an aliphatic hydrocarbon group.
- the aliphatic hydrocarbon group substituted with a hydrogen atom preferably has 1 to 30 carbon atoms, and more preferably has 1 to 22 carbon atoms.
- Specific examples include trimethylamine, triethylamine, tripropylamine, triarylamine, triisopropylamine, tri-n-butylamine, tri-t-butylamine, tree sec-butylamine, trihexylamine, triheptylamine, trioctylamine.
- N, N-dimethyldodecylamine, N, N-dimethyltetradecylamine, N, N-dimethylcetylamine, N, N-dimethyloctadecylamine and N, N-dimethylbehenylamine are preferred.
- Aliphatic monovalent secondary amine compound (C-1) and aliphatic monovalent tertiary amine compound (C —2) may be used in combination of two or more.
- the amount of the aliphatic monovalent amine compound (C) is from 0.5 to 5.5 parts by weight, preferably from 5 to 5 parts by weight, more preferably from 1.5 to 5 parts by weight, per 100 parts by weight of the acrylic rubber (A). 4.5 parts by weight. If the amount of the aliphatic-valent amine compound (C) is too small, the strength of the vulcanizate may be remarkably reduced or the compression set may be increased. Conversely, if the amount is too large, the aliphatic-valent amine compound (C) may bloom on the surface of the vulcanized product, or the hardness change rate after the heat load of the vulcanized product may be too large.
- the vulcanizable acrylic rubber composition of the present invention may contain, if necessary, a reinforcing material, a filler, an antioxidant, a light stabilizer, a plasticizer, a processing aid, a lubricant, an adhesive, a lubricant, a flame retardant, It may contain additives such as a fungicide, an antistatic agent and a coloring agent.
- the vulcanizable acrylic rubber composition may further contain rubber, elastomer, resin, etc. other than the acrylic rubber (A), if necessary.
- rubbers such as natural rubber, acrylic rubber other than acrylic rubber (A), polybutadiene rubber, polyisoprene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, etc .; olefin elastomer, styrene elastomer, vinyl chloride elastomer , Polyester-based elastomers, polyamide-based elastomers, polyurethane-based elastomers, polysiloxane-based elastomers, etc .; polyolefin-based resins, polystyrene-based resins, polyacryl-based resins, polyphenylene ether-based resins, polyester-based resins, Resins such as polycarbonate resins; and the like.
- the method for preparing the vulcanizable acrylic rubber composition of the present invention is not particularly limited, and is the same as the method for preparing a general vulcanizable rubber composition.
- the necessary components may be mixed by an appropriate mixing method such as roll mixing, Banbury mixing, screw mixing, and solution mixing.
- the mixing order of the required components is not particularly limited, but after sufficiently mixing the components which are hard to decompose by heat, the components which are easily reacted or decomposed by heat, such as a polyvalent primary amine vulcanizing agent (B). May be mixed in a short time at a temperature at which reaction or decomposition is difficult.
- the method for molding the vulcanizable acrylic rubber composition is not particularly limited. Any method such as compression molding, injection molding, transfer molding or extrusion molding can be used. Noh.
- the vulcanization method may be any of a method in which molding and vulcanization are performed at the same time, or a method in which vulcanization is performed after molding, as long as the method is selected according to the shape of the vulcanized product.
- the vulcanized product of the present invention is obtained by heating the vulcanizable acrylic rubber composition.
- the calo heat temperature is preferably 130 to 220 ° C., more preferably 140 ° C. to 200 ° C.
- the vulcanization time is preferably in the range of 30 seconds to 5 hours in consideration of vulcanization density and production efficiency.
- a method used for vulcanization of rubber such as press heating, steam heating, oven heating, and hot air heating, may be appropriately selected.
- post-curing may be performed by heating over time.
- the post-vulcanization time varies depending on the heating method, vulcanization temperature, shape and the like, but is preferably from 1 to 48 hours.
- a heating method and a heating temperature may be appropriately selected.
- the percentage of the monomer unit composition of rubber is based on weight.
- the properties of the acrylic rubber, the vulcanizable acrylic rubber composition and the vulcanizate were evaluated by the following methods.
- the Mooney viscosity (ML 1 + 4 ) of the acrylic rubber was measured at 100 ° C according to JIS K6300.
- a mu-scorch time t5 (unit: minute) was measured.
- the tensile strength (unit: MPa), elongation (unit:%), and hardness of the vulcanized product were measured according to JIS K6251.
- the compression set is determined by compressing the O-ring at 25 ⁇ / ⁇ , leaving it to stand at 175 ° C for 70 hours, releasing the compression, and then immersing it in an environment at a temperature of 23 ° C and a humidity of 50%. The sample was allowed to stand for 1 minute, and the compression set (unit:%) was measured.
- Acrylic rubber A1 (Ethyl acrylate unit content 47%, n-butyl acrylate unit content 34%, 2-methoxyethyl acrylate unit content 14%, mono-n-butyl maleate unit content 5 «1 ⁇ 2 (acrylic acid ester monomer (a) unit content 950/0, the force Rupokishiru group-containing ethylenically unsaturated monomer (b) units 5%, alkyl ⁇ chestnut rates monomer against the monomer (a) units Unit content 85.3%), lipoxyl group content 8 X 1CT 3 ephr, Mooney viscosity (ML, +4 , 100 ° C) 35) 100 parts, carbon black (ASTM Classification according to D 1 765; N 550) 60 parts, stearic acid (carbon black dispersant, softener) 2 parts and 4,4'-bis (or, ⁇ -dimethylpentyl) diphenylamine (antiaging) 2 parts are kneaded at 50
- the vulcanizable acrylic rubber composition was molded and pressed by a press of 10 MPa at 170 ° C. for 20 minutes to produce a 15 cm ⁇ 15 cm ⁇ 2 mm test piece. It was left at 170 ° C for 4 hours for sulfurization. Using these test pieces, the oil resistance, metal corrosion resistance, tensile strength, elongation, hardness, heat resistance, and cold resistance of the vulcanized product were evaluated and measured. Also, the vulcanizable acrylic rubber composition was molded and vulcanized by a press of 10 MPa at 170 ° C. for 20 minutes, and left at 170 ° C. for 4 hours for post-vulcanization. An O-ring having a diameter of 3.1 mm was prepared, and the compression set of the vulcanizate was evaluated. Table 1 shows the results.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that the amount of didodecylamine was changed from 2 parts to 1 part, and their properties were evaluated. The results are shown in Table 1.
- Vulcanizable acrylic rubber compositions and vulcanizates thereof were prepared in the same manner as in Example 1 except that the amount of didodecylamine was changed from 2 parts to 4 parts, and their properties were evaluated. Table 1 shows the results.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that dioctadecylamine (an aliphatic monovalent secondary amine compound) was used instead of didodecylamine. The properties were evaluated. Table 1 shows the results.
- 4,6'-Diaminodiphenyl ether was replaced with 0.6 parts of hexamethylene diamine carbamate (carbonate of an aliphatic divalent primary amine compound), and 0.6 parts of didodecylaminate was used.
- a vulcanizable acrylic rubber composition and its vulcanizate were prepared in the same manner as in Example 1 except that the amount of the rubber was changed from 2 parts to 4 parts, and their properties were evaluated. Table 1 shows the results.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that the amount of 4,4'-diaminodiphenyl ether was changed to 0.6 part by force and 0.3 part. And their properties were evaluated. Table 1 shows the results.
- a vulcanizable acrylic rubber composition and its vulcanizate were prepared in the same manner as in Example 1 except that N, N-dimethyloctadecylamine (aliphatic monovalent tertiary amine compound) was used instead of didodecylamine. They were prepared and their properties evaluated. Table 1 shows the results.
- Acrylic rubber A2 instead of acrylic rubber A1 (49% ethyl acrylate unit content, 34% n-butyl acrylate unit content, 14% 2-methoxyethyl acrylate unit content, mono-n-butyl fumarate unit content
- Acrylic rubber A2 is used instead of acrylic rubber A1, and 4,4 '-(p-phenylenediisopropylidene) dianiline (aromatic divalent primary amine) is used instead of 0.4 part of 4,4'-diaminodiphenyl alcohol.
- Compound) A vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that 1 part of each compound was used, and their properties were evaluated. Table 1 shows the results.
- Acrylic rubber A2 in place of acrylic rubber A1, and 2,2-bis [4- (4-aminophenoxy) phenyl] propane (Yoshika) instead of 0.4 parts of 4,4'-diaminodiphenyl ether Vulcanized in the same manner as in Example 1 except that 1 part of a divalent primary amine compound) was used.
- Acrylic rubber compositions and vulcanizates thereof were prepared and their properties were evaluated. Table 1 shows the results.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that each was used, and their properties were evaluated. Table 1 shows the results.
- Vulcanizable acrylic rubber compositions and vulcanizates thereof were prepared in the same manner as in Example 1 except that the amount of didodecylamine was changed from 2 parts to 0.3 parts, and their properties were evaluated. Table 2 shows the results.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that the amount of didodecylamine was changed from 2 parts to 6 parts, and their properties were evaluated. Table 2 shows the results.
- Acrylic rubber A2 is used instead of acrylic rubber A1 and diphenyldiphenylmethane bis (4,4'-force rubamoyl- ⁇ -force pro lactam) (secondary grade) is used instead of 0.4 part of 4,4'-diaminodiphenyl alcohol.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that 1.2 parts of a blocked isocyanate compound having a plurality of amines and tertiary amines were used. And evaluated their properties. Table 2 shows the results.
- Acrylic rubber ⁇ 2 was used instead of acrylic rubber ⁇ 1, and 2,2-bis [4-1- (4-aminophenoxy) phenyl] propane was replaced with 4,4-diaminodiphenyl ether 0.6 part.
- a vulcanizable acrylic rubber composition and a vulcanizate thereof were prepared in the same manner as in Example 1 except that 6 parts of a monovalent primary amine compound were used, and their properties were evaluated. Table 2 shows the results.
- 0.3 part of didodecylamine was used in place of 0.3 part of didodecylamine, and 2 parts of N-cyclohexyl_2_benzothiazolyl sulfenamide (a non-aliphatic compound having a secondary amine) was used.
- Vulcanizable acrylic rubber compositions and their vulcanizates were prepared and their properties were evaluated. Table 2 shows the results.
- a vulcanizable acrylic rubber composition and a vulcanizable acrylic rubber composition were prepared in the same manner as in Example 1 except that 2 parts of 2-methylimidazole (a non-aliphatic compound having a tertiary amine) was used instead of 0.3 part of didodecylamine. Sulphates were prepared and their properties evaluated. Table 2 shows the results.
- Acrylic rubber a3 (Echiru unit content of 50% acrylic acid instead of acrylic rubber A1, acrylate n- butyl unit content 280/0, 2 Metokishechiru unit content of 20% acrylic acid, black port vinyl acetate unit content 2 % (monomer (b) unit content 00/0), the ⁇ one knee viscosity (ML 1 + 4, 100 ° C) 35), 4, 4 '- instead of Jiaminojifue two Rue one ether 0.6 parts 0.5 parts of 2,4,6-trimercaptos-s-triazine and 1.5 parts of zinc dibutyldithiocarbamate in place of 0.3 parts of didodecylamine were used in the same manner as in Example 1 except that they were used. Vulcanizable acrylic rubber compositions and their vulcanizates were prepared and their properties were evaluated. Table 2 shows the results.
- Acrylic rubber a4 (Vamac G, DuPont, Monoacrylate copolymer, monoester copolymer of tentenedioic acid, ethylene unit content of 30% or more), Mooney viscosity (ML, +4 , 100 ° C)
- the vulcanizable acrylic rubber composition and the vulcanizable acrylic rubber composition were prepared in the same manner as in Example 1 except that the amount of nodiphenyl ether was changed to 0.6 part by force and the like to 1.6 parts, and the amount of didodecylamine was changed from 2 parts to 4 parts. Vulcanizates were prepared and their properties were evaluated. Table 2 shows the results.
- Adhesion test Adhesion (k ⁇ f) 1.66 0, 33 0.46 0.88 2.79 2.58 2.11 1.95 0.54 Nice coach time 5 (min) 46.9 41.0 18.8 32.7 9.1 77.5 4.8 8.3 18.2 Vulcanizate properties
- Oil immersion test Volume change rate (%) +18.7 +19,6 +18.5 +17.9 +17.4 +18.9 +17.8 +18.0
- Metal corrosion test Copper and brass (no blank corrosion) Corrosion Physical properties
- the vulcanizates of vulcanizable acrylic rubber compositions containing only a small amount of an aliphatic monovalent secondary amine compound and / or an aliphatic monovalent tertiary amine compound are compression-permanent. Large strain (Comparative Example 1).
- the vulcanizate of a vulcanizable acrylic rubber composition containing a large amount of an aliphatic monovalent secondary amine compound and / or an aliphatic monovalent tertiary amine compound the change in hardness after an air-heating aging test is observed. The amount was large (Comparative Example 2).
- a vulcanizate of a vulcanizable acrylic rubber composition containing a blocked isocyanate compound as a vulcanizing agent has a large compression set (Comparative Example 3).
- the vulcanizate of the vulcanizable acrylic rubber composition containing a large amount of the aromatic divalent primary amine compound is inferior in heat resistance and has a large compression set (Comparative Example 4).
- a vulcanizable acrylic rubber composition containing a guanidine compound as a vulcanization accelerator easily adheres to a metal surface (Comparative Example 5).
- a vulcanizable acrylic rubber composition containing a sulfenamide compound as a vulcanization accelerator adheres to a metal surface and has a large compression set immediately after vulcanization (Comparative Example 6).
- a vulcanizable acrylic rubber composition containing an imidazole compound as a vulcanization accelerator has poor scorch stability and easily sticks to a metal surface (Comparative Example 7).
- An acrylic rubber composition containing a chlorine atom in place of a propyloxyl group as a vulcanization point easily adheres to a metal surface even when a vulcanizing agent corresponding to the vulcanization point is used.
- High compression set and poor metal corrosion resistance (Comparative Example 8).
- a vulcanized acrylic rubber composition using an ethylene-ester-ester-butenedionate monoester copolymer has poor oil resistance (Comparative Example 9).
- the vulcanizable acrylic rubber composition of the present invention hardly adheres to a metal surface, hardly causes scorch, and has excellent oil resistance and metal corrosion resistance after vulcanization (Examples 1 to 12). Industrial applicability
- the vulcanizable acrylic rubber composition of the present invention adheres to a metal surface and is difficult, and has excellent scorch stability at the time of vulcanization, and has excellent heat resistance, cold resistance, oil resistance, and metal corrosion resistance after vulcanization. It has the property that compression set is small.
- the vulcanized product of the vulcanizable acrylic rubber composition can be used in a wide range of materials such as seal materials, hose materials, vibration-proof materials, tube materials, belt materials, and boot materials.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Gasket Seals (AREA)
- Vibration Prevention Devices (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60312131T DE60312131T2 (de) | 2002-01-30 | 2003-01-30 | Vulkanisierbare acrylkautschukzusammensetzung und vulkanisat |
US10/502,958 US7169856B2 (en) | 2002-01-30 | 2003-01-30 | Vulcanizable acrylic rubber composition and vulcanizate |
EP03734631A EP1479727B1 (en) | 2002-01-30 | 2003-01-30 | Vulcanizable acrylic rubber composition and vulcanizate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002021913A JP4075389B2 (ja) | 2002-01-30 | 2002-01-30 | 加硫性アクリルゴム組成物および加硫物 |
JP2002-21913 | 2002-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003064525A1 true WO2003064525A1 (fr) | 2003-08-07 |
Family
ID=27654409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000932 WO2003064525A1 (fr) | 2002-01-30 | 2003-01-30 | Composition de caoutchouc acrylique vulcanisable et vulcanisat |
Country Status (5)
Country | Link |
---|---|
US (1) | US7169856B2 (ja) |
EP (1) | EP1479727B1 (ja) |
JP (1) | JP4075389B2 (ja) |
DE (1) | DE60312131T2 (ja) |
WO (1) | WO2003064525A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7402631B2 (en) * | 2004-02-27 | 2008-07-22 | Zeon Corporation | Acrylic rubber and cross-linkable acrylic rubber composition |
JP5563764B2 (ja) * | 2006-12-05 | 2014-07-30 | 電気化学工業株式会社 | アクリル系ゴム組成物及びその加硫物 |
JP2008189734A (ja) * | 2007-02-02 | 2008-08-21 | Denki Kagaku Kogyo Kk | アクリル系ゴム組成物およびその加硫物 |
JP2008189733A (ja) * | 2007-02-02 | 2008-08-21 | Denki Kagaku Kogyo Kk | アクリル系ゴム組成物およびその加硫物 |
EP2159264B1 (en) * | 2007-05-22 | 2012-10-10 | Denki Kagaku Kogyo Kabushiki Kaisha | Acrylic rubber composition, vulcanized rubber therefrom and use thereof |
DE102007061735A1 (de) * | 2007-12-20 | 2009-07-23 | Audi Ag | Zahnriemen und Verfahren zu seiner Herstellung |
JP2010090351A (ja) * | 2008-10-11 | 2010-04-22 | Nok Corp | アクリルゴム組成物及びそれを用いて加硫成形されたシール部品 |
DE102008055525A1 (de) | 2008-12-15 | 2010-06-17 | Contitech Schlauch Gmbh | Vulkanisierbare Kautschukmischung, insbesondere auf Basis ACM oder AEM, und Vulkanisat, insbesondere ein Schlauchmaterial |
JP5427400B2 (ja) * | 2008-12-18 | 2014-02-26 | シーシーアイ株式会社 | 減衰性付与剤及び減衰性材料 |
JP2015013973A (ja) * | 2013-07-08 | 2015-01-22 | Nok株式会社 | アクリルゴム組成物及び加硫成形物 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11269336A (ja) * | 1998-03-19 | 1999-10-05 | Nippon Mektron Ltd | アクリル系エラストマー組成物 |
JP2001181356A (ja) * | 1999-12-24 | 2001-07-03 | Nippon Mektron Ltd | アクリル系エラストマーおよびその組成物 |
JP2002265737A (ja) * | 2001-03-06 | 2002-09-18 | Nippon Zeon Co Ltd | アクリルゴム組成物および加硫物 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3883472A (en) * | 1973-08-09 | 1975-05-13 | Du Pont | Fast curing heat stable elastomeric compositions |
JPH1192614A (ja) | 1997-09-19 | 1999-04-06 | Nippon Mektron Ltd | アクリルエラストマー組成物 |
-
2002
- 2002-01-30 JP JP2002021913A patent/JP4075389B2/ja not_active Expired - Lifetime
-
2003
- 2003-01-30 WO PCT/JP2003/000932 patent/WO2003064525A1/ja active IP Right Grant
- 2003-01-30 EP EP03734631A patent/EP1479727B1/en not_active Expired - Fee Related
- 2003-01-30 DE DE60312131T patent/DE60312131T2/de not_active Expired - Lifetime
- 2003-01-30 US US10/502,958 patent/US7169856B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11269336A (ja) * | 1998-03-19 | 1999-10-05 | Nippon Mektron Ltd | アクリル系エラストマー組成物 |
JP2001181356A (ja) * | 1999-12-24 | 2001-07-03 | Nippon Mektron Ltd | アクリル系エラストマーおよびその組成物 |
JP2002265737A (ja) * | 2001-03-06 | 2002-09-18 | Nippon Zeon Co Ltd | アクリルゴム組成物および加硫物 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1479727A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1479727A4 (en) | 2005-07-13 |
DE60312131T2 (de) | 2007-11-08 |
EP1479727B1 (en) | 2007-02-28 |
EP1479727A1 (en) | 2004-11-24 |
DE60312131D1 (de) | 2007-04-12 |
US7169856B2 (en) | 2007-01-30 |
JP4075389B2 (ja) | 2008-04-16 |
US20050080173A1 (en) | 2005-04-14 |
JP2003221483A (ja) | 2003-08-05 |
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