WO2019176796A1 - エチレン・α-オレフィン・非共役ポリエン共重合体組成物を含む積層体、並びにエチレン・α-オレフィン・非共役ポリエン共重合体組成物 - Google Patents
エチレン・α-オレフィン・非共役ポリエン共重合体組成物を含む積層体、並びにエチレン・α-オレフィン・非共役ポリエン共重合体組成物 Download PDFInfo
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- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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Definitions
- the present invention relates to a laminate of an ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition layer and an ethylene / vinyl acetate copolymer saponified layer, and an ethylene / vinyl acetate copolymer, which have improved adhesive strength.
- the present invention relates to an ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition having excellent adhesive strength with a saponified product layer.
- radiator hose for cooling the engine
- drain hose for radiator overflow
- heater hose for indoor heating
- air conditioning drain hose wiper water hose
- roof drain hose for outdoor heating
- lactose hose is attached.
- These hoses are made of ethylene / propylene / diene copolymer (EPDM) having good ozone resistance, weather resistance and heat resistance.
- EPDM ethylene / propylene / diene copolymer
- Patent Document 1 discloses a vulcanized rubber having an ethylene / ⁇ -olefin / non-conjugated diene copolymer as a rubber component, and its volume electrical resistivity at 30% compression is 10 5 ⁇ ⁇ cm or more.
- a radiator hose using a vulcanized rubber as the outermost layer has been proposed.
- olefin polymers such as ethylene / ⁇ -olefin / non-conjugated polyene copolymer have poor permeability to volatile substances such as gasoline, for example, ethylene / propylene / diene copolymer (EPDM) and ethylene
- EPDM ethylene / propylene / diene copolymer
- ethylene A laminated resin tubular body for a hose inner tube having a composition layer with a vinyl acetate copolymer saponified product (also referred to as an ethylene / vinyl alcohol copolymer) (Patent Document 2), or an ethylene / vinyl alcohol in a thermoplastic elastomer layer
- Patent Document 3 A laminated fuel system hose (Patent Document 3) formed by laminating copolymer layers has been proposed.
- a laminated fuel hose formed by laminating a thermoplastic elastomer layer and an ethylene / vinyl alcohol copolymer layer has a gas barrier property, but since the thermoplastic elastomer layer is a nonpolar polymer, an ethylene / vinyl alcohol copolymer is used. It is inferior in adhesiveness with the combined layer.
- the present inventors have made various studies for the purpose of obtaining an ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition having excellent adhesive strength with the saponified ethylene / vinyl acetate copolymer layer.
- the present invention relates to the following [1] to [7].
- ethylene / vinyl acetate copolymer ( 5 to 50 parts by mass of C) [2] ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A), ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A): 100 parts by mass A layer obtained by laminating a copolymer composition layer containing 1.7 to 20 parts by mass of dicumyl peroxide and 2 to 20 parts by mass of a metal oxide and a saponified ethylene / vinyl acetate copolymer (B) layer [1] is a laminate.
- copolymer composition forming the copolymer composition layer according to item [4] is a copolymer composition further comprising 1.7 to 20 parts by mass of dicumyl peroxide.
- the laminate of the present invention comprises an ethylene / vinyl acetate copolymer saponified product (B) layer having excellent gas barrier properties and an ethylene / ⁇ -olefin / nonconjugated polyene copolymer (A) having good ozone resistance, weather resistance and heat resistance. ) Can be suitably used for hoses and the like.
- the copolymer composition containing the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A) of the present invention is excellent in adhesive strength with the saponified ethylene / vinyl acetate copolymer (B) layer.
- Conjugated polyene copolymer (A) [Hereinafter, it may be abbreviated as "copolymer (A).” ] Is an ethylene / ⁇ -olefin / non-conjugated polyene copolymer obtained by random copolymerization of ethylene, an ⁇ -olefin having 3 to 20 carbon atoms and a non-conjugated polyene.
- the ⁇ -olefin is usually an ⁇ -olefin having 3 to 20 carbon atoms, and in particular, an ⁇ -olefin having 3 to 10 carbon atoms such as propylene, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene and the like. -Olefin is preferred, and propylene and 1-butene are particularly preferred.
- ethylene / ⁇ -olefin / nonconjugated polyene copolymer (A) are preferably an ethylene / propylene / nonconjugated polyene copolymer and an ethylene / 1-butene / nonconjugated polyene copolymer. Used.
- the molar ratio of ethylene to ⁇ -olefin is usually 40/60 to 90/10, preferably Those in the range of 50/50 to 80/20, particularly preferably 55/45 to 70/30 are desirable.
- non-conjugated polyene a cyclic or chain non-conjugated polyene is used.
- the cyclic non-conjugated polyene include 5-ethylidene-2-norbornene, dicyclopentadiene, 5-vinyl-2-norbornene, norbornadiene, methyltetrahydroindene and the like.
- chain non-conjugated polyenes include 1,4-hexadiene, 7-methyl-1,6-octadiene, 8-methyl-4-ethylidene-1,7-nonadiene, 4-ethylidene-1,7-undecadiene. Etc.
- These non-conjugated polyenes are used singly or in combination of two or more, and the copolymerization amount is desirably 1 to 40, preferably 2 to 35, more preferably 3 to 30 in terms of iodine value.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A) usually has an intrinsic viscosity [ ⁇ ] measured in decahydronaphthalene at 135 ° C. of 0.8 to 4 dl / g, preferably 1 to It is in the range of 3.5 dl / g, more preferably 1.1 to 3 dl / g.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A) may be a modified product obtained by graft copolymerization with an unsaturated carboxylic acid or a derivative thereof such as an acid anhydride.
- the ethylene / ⁇ -olefin / nonconjugated polyene copolymer (A) is most preferably an ethylene / propylene / nonconjugated diene copolymer.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A) can be used singly or in combination of two or more.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A) having the above-mentioned characteristics is described in “Polymer production process (published by Industrial Research Council, P.309-330)”. It can be prepared by such a known method.
- the metal oxide contained in the copolymer composition according to the present invention is preferably zinc oxide or magnesium oxide, and the metal oxide may be surface-treated.
- Dicumyl peroxide contained in the copolymer composition according to the present invention is a kind of organic peroxide used as a crosslinking agent for polymers.
- the hydrophilic fumed silica blended in the copolymer (A) according to the present invention is a kind of dry silica, and is a silica having hydrophilic properties such as siloxane and silanol groups on the surface thereof.
- Such hydrophilic fumed silica is manufactured and sold under the trade names of AEROSIL 900, AEROSIL 130, AEROSIL 150, AEROSIL 200, AEROSIL 255, AEROSIL 255, AEROSIL 300, AEROSIL 380, AEROSILOX 50, and the like, for example, from Nippon Aerosil Co., Ltd. Yes.
- the ethylene / vinyl acetate copolymer (C) according to the present invention is a copolymer of ethylene and vinyl acetate, and the content of vinyl acetate present in the copolymer is usually 5 to 50 parts by weight, preferably It is in the range of 5 to 40 parts by weight.
- the vinyl acetate content is within this range, a laminate having excellent adhesive strength with the saponified ethylene / vinyl acetate copolymer (B) layer can be obtained by blending with the copolymer (A). .
- the melt flow rate (MFR) of the ethylene / vinyl acetate copolymer (C) according to the present invention is a value measured in accordance with JIS K7210 (190 ° C., 2.16 kg load), usually 1.6 to 6. It is in the range of 4 g / 10 min, preferably 1.6 to 4.0 g / 10 min.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition includes the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A), the ethylene / ⁇ -olefin / non-conjugated polyene copolymer.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition forming the laminate of the present invention comprises a composition containing 1.7 to 20 parts by mass of the dicumyl peroxide and 2 to 20 parts by mass of a metal oxide ( In the case of 1), 1.7 to 20 parts by mass, preferably 3.4 to 10.2 parts by mass of the dicumyl peroxide and 100 to 10 parts by mass of the copolymer (A) and the metal oxide 2 to 20 parts by weight, preferably 2 to 15 parts by weight of the product.
- the copolymer composition (1) according to the present invention contains dicumyl peroxide and a metal oxide in the above ranges, a laminate having excellent adhesive strength with the saponified ethylene / vinyl acetate copolymer (B) layer is obtained. Obtainable.
- the copolymer composition (1) according to the present invention may be blended with other components depending on the desired purpose within a range not impairing the effects of the present invention. it can.
- other components include fillers, crosslinking aids, vulcanization accelerators, vulcanization aids, softeners, anti-aging agents, processing aids, activators, heat stabilizers, weathering stabilizers, antistatic agents, You may contain at least 1 sort (s) chosen from a coloring agent, a lubricant, a thickener, a foaming agent, and a foaming auxiliary agent. Also. Each additive may be used individually by 1 type, and may use 2 or more types together.
- the filler constituting the copolymer composition (1) according to the present invention is a known rubber reinforcing agent blended in the rubber composition, and is usually an inorganic substance called carbon black or inorganic reinforcing agent.
- the filler according to the present invention examples include Asahi # 55G, Asahi # 60G (manufactured by Asahi Carbon Co., Ltd.), seast (SRF, GPF, FEF, MAF, HAF, ISAF, SAF, FT, MT).
- Carbon black manufactured by Tokai Carbon Co., Ltd.
- silica activated calcium carbonate, fine talc, fine powder silicic acid, light calcium carbonate, Heavy calcium carbonate, talc, clay and the like can be mentioned.
- fillers may be used alone or as a mixture of two or more.
- carbon black, light calcium carbonate, heavy calcium carbonate, talc, clay and the like are preferably used.
- the copolymer composition (1) according to the present invention contains a filler, it is usually in the range of 100 to 300 parts by weight, preferably 100 to 250 parts by weight with respect to 100 parts by weight of the copolymer (A). Can be blended.
- crosslinking aids include sulfur; quinone dioxime crosslinking aids such as p-quinonedioxime; acrylic crosslinking aids such as ethylene glycol dimethacrylate and trimethylolpropane trimethacrylate; diallyl phthalate and triallyl isocyanurate. Allyl-based crosslinking aids such as maleimide-based crosslinking aids; divinylbenzene and the like.
- vulcanization accelerator examples include N-cyclohexyl-2-benzothiazole sulfenamide, N-oxydiethylene-2-benzothiazole sulfenamide, N, N′-diisopropyl-2-benzothiazole sulfenamide, 2 -Mercaptobenzothiazole (for example, Sunseller M (trade name; manufactured by Sanshin Chemical Industry Co., Ltd.)), 2- (4-morpholinodithio) penzothiazole (for example, Noxeller MDB-P (trade name; Ouchi Shinsei Chemical Industries, Ltd.) )), 2- (2,4-dinitrophenyl) mercaptobenzothiazole, 2- (2,6-diethyl-4-morpholinothio) benzothiazole and dibenzothiazyl disulfide (eg Sunceller DM (trade name; three New chemical industry))) and other thiazole vulcanization accelerators; diphenylguanidine
- the blending amount of these vulcanization accelerators in the copolymer composition (1) is generally 0.1 to 20 parts by mass with respect to 100 parts by mass of the copolymer (A).
- the amount is preferably 0.2 to 15 parts by mass, more preferably 0.5 to 10 parts by mass.
- the blending amount of the vulcanization accelerator is within the above range, the copolymer composition exhibits excellent crosslinking characteristics without blooming on the surface of the obtained molded body.
- a sulfur compound is used as the crosslinking agent, a vulcanization aid can be used in combination.
- the softener examples include petroleum oil softeners such as process oil, lubricating oil, paraffin oil, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar softener such as coal tar; castor oil, linseed oil, rapeseed oil, large Fat oil-based softeners such as bean oil and coconut oil; waxes such as beeswax and carnauba wax; naphthenic acid, pine oil, rosin or derivatives thereof; synthetic polymer substances such as terpene resin, petroleum resin and coumarone indene resin; dioctyl Ester softeners such as phthalate and dioctyl adipate; other examples include microcrystalline wax, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon synthetic lubricating oil, tall oil, and sub (factis).
- petroleum softening Agents are preferred, and process oils are particularly preferred.
- the amount of the softener is generally 2 to 100 parts by weight, preferably 100 parts by weight of the copolymer (A). Is 10 to 100 parts by mass.
- Anti-aging agent stabilizer
- an anti-aging agent stabilizer
- examples of such anti-aging agents include conventionally known anti-aging agents such as amine-based anti-aging agents, phenol-based anti-aging agents, and sulfur-based anti-aging agents.
- anti-aging agent examples include aromatic secondary amine-based anti-aging agents such as phenylbutylamine and N, N-di-2-naphthyl-p-phenylenediamine; dibutylhydroxytoluene, tetrakis [methylene (3,5-di- -T-butyl-4-hydroxy) hydrocinnamate] phenolic antioxidants such as methane; bis [2-methyl-4- (3-n-alkylthiopropionyloxy) -5-t-butylphenyl] sulfide and the like Thioether antioxidants; dithiocarbamate antioxidants such as nickel dibutyldithiocarbamate; 2-mercaptobenzoylimidazole, 2-mercaptobenzimidazole, zinc salt of 2-mercaptobenzimidazole, dilauryl thiodipropionate, distearyl Io such as thiodipropionate There is a system anti-aging agent and
- the blending amount of the anti-aging agent is usually 0.3 to 100 parts by mass of the copolymer (A).
- the amount is 10 parts by mass, preferably 0.5 to 7.0 parts by mass.
- processing aids those generally blended into rubber as processing aids can be widely used. Specific examples include ricinoleic acid, stearic acid, palmitic acid, lauric acid, barium stearate, zinc stearate, calcium stearate, zinc laurate or esters. Of these, stearic acid is preferred.
- the copolymer composition (1) according to the present invention contains a processing aid, it can be appropriately blended in an amount of usually 1 to 3 parts by mass with respect to 100 parts by mass of the copolymer (A). .
- a blending amount of the processing aid within the above range is preferable because excellent processability such as kneading processability, extrusion processability, and injection moldability is achieved.
- the processing aid may be a single type or two or more types.
- Activator examples include amines such as di-n-butylamine, dicyclohexylamine, and monoelaanolamine; diethylene glycol, polyethylene glycol, lecithin, triarylate melylate, aliphatic carboxylic acid, and aromatic carboxylic acid zinc compound. Activators; zinc peroxide preparations; kutadecyltrimethylammonium bromide, synthetic hydrotalcite, special quaternary ammonium compounds.
- amines such as di-n-butylamine, dicyclohexylamine, and monoelaanolamine
- diethylene glycol polyethylene glycol, lecithin, triarylate melylate, aliphatic carboxylic acid, and aromatic carboxylic acid zinc compound.
- Activators zinc peroxide preparations
- kutadecyltrimethylammonium bromide synthetic hydrotalcite, special quaternary ammonium compounds.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition (2) forming the laminate of the present invention contains 20 to 20 parts of the hydrophilic fumed silica with respect to 100 parts by mass of the copolymer (A).
- the copolymer composition contains 120 parts by mass, preferably 20 to 100 parts by mass.
- the copolymer composition (2) contains the hydrophilic fumed silica in the above range, a laminate having excellent adhesive strength with the ethylene / vinyl acetate copolymer saponified product (B) layer can be obtained.
- hydrophobic fumed silica is manufactured and sold in the silica for reinforcing agents. Instead of hydrophilic fumed silica, hydrophobic fumed silica is blended. However, the adhesive strength with the saponified ethylene / vinyl acetate copolymer layer (B) is not improved.
- the copolymer composition (2) according to the present invention in addition to the hydrophilic fumed silica, other components can be blended depending on the desired purpose within a range not impairing the effects of the present invention.
- Other components include, for example, fillers other than the hydrophilic fumed silica (referred to as other fillers), crosslinking aids, vulcanization accelerators, vulcanization aids, softening agents, anti-aging agents, processing aids, You may contain at least 1 sort (s) chosen from an activator, a heat stabilizer, a weather stabilizer, an antistatic agent, a coloring agent, a lubricant, a thickener, a foaming agent and a foaming aid. Also. Each additive may be used individually by 1 type, and may use 2 or more types together.
- the additive contained in the copolymer composition (2) concerning this invention is the same as the compound mix
- the filler other than the hydrophilic fumed silica constituting the copolymer composition (2) of the present invention is a known rubber reinforcing agent compounded in the rubber composition, usually carbon black, inorganic reinforcing agent. It is an inorganic substance called.
- the copolymer composition (2) according to the present invention contains a filler, it is usually in the range of 100 to 300 parts by weight, preferably 100 to 250 parts by weight with respect to 100 parts by weight of the copolymer (A). Can be blended.
- the blending amount of these vulcanization accelerators in the copolymer composition (2) is generally 0.1 to 20 parts by mass with respect to 100 parts by mass of the copolymer (A).
- the amount is preferably 0.2 to 15 parts by mass, more preferably 0.5 to 10 parts by mass.
- the blending amount of the vulcanization accelerator is within the above range, the copolymer composition exhibits excellent crosslinking characteristics without blooming on the surface of the obtained molded body.
- a sulfur compound is used as the crosslinking agent, a vulcanization aid can be used in combination.
- the blending amount of the vulcanization aid in the copolymer composition (2) is usually 1 to 20 parts by mass with respect to 100 parts by mass of the copolymer (A). .
- the amount of the softening agent is generally 2 to 100 parts by weight, preferably 10 to 100 parts per 100 parts by weight of the copolymer (A). Part by mass.
- the blending amount of the anti-aging agent is usually 0.3 to 10 parts by mass with respect to 100 parts by mass of the copolymer (A). 0.5 to 7.0 parts by mass is preferable.
- the blending amount of the anti-aging agent is within the above range, there is no bloom on the surface of the obtained molded article, and the occurrence of vulcanization inhibition can be further suppressed.
- the copolymer composition (2) contains a processing aid, it can be appropriately blended in an amount of usually 1 to 3 parts by mass with respect to 100 parts by mass of the copolymer (A).
- a blending amount of the processing aid within the above range is preferable because excellent processability such as kneading processability, extrusion processability, and injection moldability is achieved.
- the processing aid may be a single type or two or more types.
- the amount of the activator is usually 0.2 to 10 parts by mass, preferably 100 parts by mass of the copolymer (A), preferably 0.3 to 5 parts by mass.
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition (3) of the present invention comprises 5 to 50 ethylene / vinyl acetate copolymer (C) with respect to 100 parts by mass of the copolymer (A).
- the ethylene / ⁇ -olefin / non-conjugated polyene copolymer composition (3) of the present invention contains an ethylene / vinyl acetate copolymer (C) in the above-mentioned range, whereby an ethylene / vinyl acetate copolymer saponified product ( B) A laminate having excellent adhesive strength with the layer can be obtained.
- the copolymer composition (3) according to the present invention is blended with other components depending on the desired purpose within a range not impairing the effects of the present invention. can do.
- Other components include, for example, fillers, crosslinking agents, crosslinking aids, vulcanization accelerators, vulcanization aids, softeners, anti-aging agents, processing aids, activators, heat stabilizers, weather stabilizers, charging
- You may contain at least 1 sort (s) chosen from an inhibitor, a coloring agent, a lubricant, a thickener, a foaming agent, and a foaming auxiliary agent.
- Each additive may be used individually by 1 type, and may use 2 or more types together.
- the additive contained in the copolymer composition (3) according to the present invention is the same as the compound blended in the copolymer composition (1) or the copolymer composition (2).
- the copolymer composition (3) of the present invention contains a filler, it is usually in the range of 100 to 300 parts by weight, preferably 100 to 250 parts by weight with respect to 100 parts by weight of the copolymer (A). What is necessary is just to mix
- the blending amount in the copolymer composition (3) is generally 0.1 to 20 parts by weight, preferably 100 parts by weight of the copolymer (A). Is 0.2 to 15 parts by mass, more preferably 0.5 to 10 parts by mass. When the amount of the organic peroxide is within the above range, the copolymer composition (3) exhibits an excellent crosslinking property without blooming on the surface of the obtained molded body, which is preferable.
- the blending amount of the crosslinking aid in the copolymer composition (3) is usually 0.5 to 10 mol, preferably 0.5 to 7 with respect to 1 mol of the organic peroxide. Mol, more preferably 1 to 6 mol.
- the blending amount in the copolymer composition (3) is usually 0.3 to 10 parts by mass, preferably 100 parts by mass of the copolymer (A), preferably It is 0.5 to 7.0 parts by mass, and more preferably 0.7 to 5.0 parts by mass.
- the blending amount of the sulfur compound is within the above range, there is no bloom on the surface of the obtained molded product, and the copolymer composition (3) exhibits excellent crosslinking characteristics.
- the blending amount of these vulcanization accelerators in the copolymer composition (3) is generally 0.1 to 20 parts by mass with respect to 100 parts by mass of the copolymer (A).
- the amount is preferably 0.2 to 15 parts by mass, more preferably 0.5 to 10 parts by mass.
- the blending amount of the vulcanization accelerator is within the above range, the copolymer composition exhibits excellent crosslinking characteristics without blooming on the surface of the obtained molded body.
- a sulfur compound is used as the crosslinking agent, a vulcanization aid can be used in combination.
- the blending amount of the vulcanization aid in the copolymer composition (3) is blended with the ethylene / ⁇ -olefin / non-conjugated polyene copolymer (A) and if necessary.
- the amount is usually 1 to 20 parts by mass with respect to 100 parts by mass in total of other polymers (crosslinkable rubber and the like) that need to be crosslinked.
- the amount of the softener is generally 2 to 100 parts by weight, preferably 100 parts by weight of the copolymer (A), preferably 10 to 100 parts by mass.
- the blending amount of the anti-aging agent is usually 0.3 to 10 with respect to 100 parts by mass of the copolymer (A). Part by mass, preferably 0.5 to 7.0 parts by mass.
- the blending amount of the anti-aging agent is within the above range, there is no bloom on the surface of the obtained molded article, and the occurrence of vulcanization inhibition can be further suppressed.
- the copolymer composition (3) of the present invention contains a processing aid, it can be appropriately blended in an amount of usually 1 to 3 parts by mass with respect to 100 parts by mass of the copolymer (A).
- a blending amount of the processing aid within the above range is preferable because excellent processability such as kneading processability, extrusion processability, and injection moldability is achieved.
- the processing aid may be a single type or two or more types.
- the compounding amount of the activator is usually 0.2 to 10 parts by mass with respect to 100 parts by mass of the copolymer (A).
- the amount is preferably 0.3 to 5 parts by mass.
- the blending amount of the foaming agent is appropriately selected depending on the performance required for the molded product produced from the copolymer composition. However, it is usually used in a proportion of 0.5 to 30 parts by mass, preferably 1 to 20 parts by mass with respect to 100 parts by mass of the copolymer (A).
- the blending amount of the foaming aid is usually 1 to 100 parts by weight, preferably 2 with respect to 100 parts by weight of the foaming agent. Used at a ratio of ⁇ 80 parts by mass.
- an ethylene / ⁇ -olefin / non-conjugated polyene copolymer is prepared by using an internal mixer (closed mixer) such as a Banbury mixer, a kneader, or an intermix.
- an internal mixer closed mixer
- rubber (A) and dicumyl peroxide and metal oxide, hydrophilic fumed silica, or ethylene / vinyl acetate copolymer (C) if necessary, filler, softener, processing aid, crosslinking aid
- the agent is kneaded at a temperature of 80 to 170 ° C. for 2 to 20 minutes.
- the resulting blended product is added with a crosslinking agent, a softening agent, a crosslinking assistant vulcanization accelerator, etc., using a roll such as an open roll, or a kneader, and a vulcanization accelerator if necessary.
- a roll such as an open roll, or a kneader, and a vulcanization accelerator if necessary.
- It can be prepared by further mixing a crosslinking aid, kneading at a roll temperature of 40 to 80 ° C. for 5 to 30 minutes, and dispensing.
- dicumyl peroxide may be kneaded simultaneously with ethylene / ⁇ -olefin / non-conjugated polyene copolymer rubber (A).
- the saponified ethylene / vinyl acetate copolymer (B) forming the laminate of the present invention is obtained by saponifying an ethylene / vinyl acetate copolymer, also called an ethylene / vinyl alcohol copolymer, and ethylene / vinyl. It is a copolymer with alcohol.
- the ethylene / vinyl acetate copolymer saponified product (B) according to the present invention is not particularly limited, but usually has an ethylene content of 20 to 50 mol%, preferably 24 to 35 mol%. Further, as long as the saponified ethylene / vinyl acetate copolymer (B) according to the present invention has melt extrusion moldability, MFR (load: 2160 g, measurement temperature: 190 ° C.) is not particularly limited. It is in the range of 0.5 to 6.4 g / 10 minutes.
- the ethylene / vinyl acetate copolymer saponified product (B) according to the present invention is specifically manufactured and sold by Kuraray Co., Ltd. under the product name EVAL and from Nippon Synthetic Chemical Co., Ltd. under the product name Soarnol.
- the laminate of the present invention is a laminate obtained by laminating a layer comprising the copolymer composition and a layer comprising the ethylene / vinyl acetate copolymer saponified product (B).
- the thickness of the copolymer composition layer of the laminate of the present invention can be appropriately determined depending on the use of the laminate, but is usually 0.03 to 30 mm, preferably 0.05 to 10 mm, more preferably 0.05 to It is in the range of 5 mm.
- the thickness of the ethylene / vinyl acetate copolymer saponified product (B) layer of the laminate of the present invention can be appropriately determined depending on the use of the laminate, but is usually 0.03 to 30 mm, preferably 0.05 to 30 mm, More preferably, it is in the range of 0.05 to 5 mm.
- the laminate of the present invention comprises various known materials depending on the use of the laminate in addition to the layer comprising the copolymer composition and the layer comprising the saponified ethylene / vinyl acetate copolymer (B). It may have a layer.
- Examples of the layer made of the copolymer composition of the laminate of the present invention or the layer made of the ethylene / vinyl acetate copolymer saponified product (B) include NBR and ECO having excellent oil resistance. And the like.
- the laminate of the present invention is formed into various laminates by co-extrusion molding of various known molding methods, specifically, for example, a copolymer composition and a saponified ethylene / vinyl acetate copolymer (B).
- Method, copolymer composition and ethylene / vinyl acetate copolymer saponified product (B) are extruded or press molded, respectively, and then the copolymer composition layer and ethylene / vinyl acetate copolymer saponified product (B ) Layers, or various molding methods such as injection molding, calender molding, hollow molding, and the like.
- the crosslinkable rubber composition according to the present invention is molded into an intended shape by various molding methods such as an extrusion molding machine, a calender roll, a press, an injection molding machine, a transfer molding machine, etc.
- the laminate can be introduced into a crosslinking tank and crosslinked.
- a crosslinked laminate can be obtained by heating at a temperature of 130 to 250 ° C. for 5 to 60 minutes or by irradiating light, ⁇ -rays or electron beams by the method described above.
- a mold may be used, or the crosslinking may be performed without using a mold.
- the molding and crosslinking processes are usually carried out continuously.
- a heating tank such as hot air, glass bead fluidized bed, UHF (ultra-high frequency electromagnetic wave), steam or the like can be used.
- the laminate of the present invention is suitably used for the production of, for example, automobile hoses, water supply hoses, gas hoses.
- automobile hose examples include a brake hose, a radiator hose, a heater hose, and an air cleaner hose.
- the intrinsic viscosity [ ⁇ ] (dl / g) of the ethylene / ⁇ -olefin / non-conjugated polyene copolymer was measured by using a fully automatic intrinsic viscometer manufactured by Koiso Co., Ltd., temperature: 135 ° C., measurement solvent: decalin. Measured.
- Weight average molecular weight (Mw), number average molecular weight (Mn), molecular weight distribution (Mw / Mn)) The weight average molecular weight (Mw), number average molecular weight (Mn), and molecular weight distribution (Mw / Mn) of the ethylene / ⁇ -olefin / non-conjugated polyene copolymer are converted to polystyrene measured by gel permeation chromatography (GPC). It is a numerical value.
- the measurement apparatus and conditions are as follows. The molecular weight was calculated based on a conversion method by preparing a calibration curve using commercially available monodisperse polystyrene.
- Apparatus Gel permeation chromatograph Alliance GP2000 (manufactured by Waters), Analysis device: Empower2 (manufactured by Waters), Column: TSKgel GMH6-HT ⁇ 2 + TSKgel GMH6-HTL ⁇ 2 (7.5 mm ID ⁇ 30 cm, manufactured by Tosoh Corporation), Column temperature: 140 ° C.
- hexane feed amount: 32.6 L / h
- ethylene feed amount is 3.6 kg / h
- propylene amount is 6.1 kg / h
- VNB feed amount is 290 g / h
- the polymerization reactor was continuously fed so that the hydrogen feed amount was 6.3 NL / h.
- the polymerization vessel was continuously fed so as to be 0.0015 mmol / h.
- (C 6 H 5 ) 3 CB (C 6 F 5 ) 4 (CB-3) is fed as a cocatalyst at a feed rate of 0.0075 mmol / h
- triorganobutylaluminum (TIBA) is fed as an organoaluminum compound at a feed rate of 20 mmol / h. Then, each was continuously fed to the polymerization vessel.
- an ethylene / propylene / VNB copolymer (A-1) formed from ethylene, propylene and VNB was obtained at a rate of 4.7 kg / hour.
- Example 3 In Example 3 and Comparative Example 3, the following ethylene / propylene / ENB copolymer [copolymer (A-2)] was used in place of the copolymer (A-1).
- the saponified ethylene / vinyl acetate copolymer layer is an ethylene / vinyl acetate copolymer saponified product having an ethylene content of 32 mol% and an MFR of 1.6 g / 10 min, EVAL (trademark) F101B [manufactured by Kuraray Co., Ltd. ] 100 ⁇ m thick film (EVOH film) was used.
- the EVOH film was dried under reduced pressure at 100 ° C. for 3 hours and then stored in a package container before being laminated with the copolymer composition layer.
- Example 1 (Preparation of copolymer composition) As a first step, the copolymer (A-1) obtained in Production Example 1 was masticated for 30 seconds using a BB-2 type Banbury mixer (manufactured by Kobe Steel), and then the copolymer was added to the copolymer.
- A-1 80 parts by mass of FEF carbon black (Asahi # 60UG, manufactured by Asahi Carbon Co., Ltd.), 5 parts by mass of zinc white (manufactured by Hakusui Tech Co., Ltd.), 1 part by mass of stearin relative to 100 parts by mass
- the acid and 50 parts by mass of Diana Process Oil PS-430 (manufactured by Idemitsu Kosan) were added and kneaded at 140 ° C. for 2 minutes. Thereafter, the ram was raised and cleaned, and further kneaded for 1 minute and discharged at about 150 ° C. to obtain a first-stage formulation.
- the composition obtained in the first stage was mixed with an 8-inch roll (manufactured by Nippon Roll Co., Ltd., front roll surface temperature 50 ° C., rear roll surface temperature 50 ° C., front roll A master batch (trade name: DCP-40c) containing 40% by mass of dicumyl peroxide as an organic peroxide component of 6.8 parts by mass. (Manufactured by Kayaku Akzo) (2.72 parts by mass in terms of organic peroxide) was added and kneaded for 10 minutes to obtain an uncrosslinked copolymer composition (formulation).
- an 8-inch roll manufactured by Nippon Roll Co., Ltd., front roll surface temperature 50 ° C., rear roll surface temperature 50 ° C., front roll A master batch (trade name: DCP-40c) containing 40% by mass of dicumyl peroxide as an organic peroxide component of 6.8 parts by mass. (Manufactured by Kayaku Akzo) (2.72 parts by mass in terms of organic peroxide) was
- the respective sheets (layer 1) and film (layer 2) were superposed.
- the sheet and the film are superposed in a state in which the Lumirror film is sandwiched in a part of the copolymer composition sheet (width 3 cm, length 15 cm: gripping distance at the peeling test),
- the sheet and film having a part of the Lumirror film sandwiched between them are pressed (main press) at 180 ° C. for 10 minutes using a 100-ton press molding machine, the copolymer composition sheet is crosslinked, A laminate was obtained.
- the Lumirror film is removed from the obtained laminate, and the interlayer between the copolymer composition sheet and the EVOH film is peeled off by hand, and the peelability (adhesiveness) is set to 1 without bonding, and firmly adhered.
- the state where peeling by hand was not possible was set to 5, and the evaluation was carried out in 5 stages from 1 to 5.
- Example 2 In place of the copolymer composition used in Example 1, except that 5 parts by mass of zinc white (manufactured by Hakusui Tech Co., Ltd.) is replaced with 5 parts by mass of magnesium oxide (Kyowa Mag 150 (manufactured by Kyowa Chemical Industry Co., Ltd.)). In the same manner as in Example 1, a copolymer composition and a laminate were obtained.
- Table 2 shows the evaluation results of the obtained laminate.
- Example 3 A copolymer composition and a laminate are obtained in the same manner as in Example 1 except that the copolymer (A-2) is used instead of the copolymer (A-1) used in Example 1. It was. Table 2 shows the evaluation results of the obtained laminate.
- Table 2 shows the evaluation results of the obtained laminate.
- Example 2 In place of the copolymer composition used in Example 1, a copolymer composition not containing a masterbatch containing 40% by mass of dicumyl peroxide was used in the same manner as in Example 1, A coalescence composition and a laminate were obtained.
- Table 2 shows the evaluation results of the obtained laminate.
- Example 3 Instead of the masterbatch containing 40% by mass of dicumyl peroxide used in Example 3, 1.5 parts by mass of powdered sulfur, tetramethylthiuram disulfide as a crosslinking agent and a crosslinking aid, trade name: Noxeller TT-P ( TT) (made by Ouchi Shinsei Chemical Co., Ltd.) 1 part by mass and 2-mercaptobenzothiazole trade name Noxeller MP (M) (made by Ouchi Shinsei Chemical Co., Ltd.) 0.5 parts by mass are used. Otherwise, the same procedure as in Example 3 was performed to obtain a copolymer composition and a laminate.
- Noxeller TT-P TT
- Noxeller MP Noxeller MP
- Table 2 shows the evaluation results of the obtained laminate.
- Example 4 (Preparation of copolymer composition)
- the copolymer (A-1) is masticated for 30 seconds using a BB-2 type Banbury mixer (manufactured by Kobe Steel), and then copolymer (A-1): 3 parts by mass of activated zinc white (Meta Z-102, Inoue Lime Industry Co., Ltd.), 5 parts by mass of FEF carbon black (Asahi # 60UG, manufactured by Asahi Carbon Co., Ltd.), 86 parts by mass with respect to 100 parts by mass Part of hydrophilic fumed silica (AEROSIL200, manufactured by Nippon Aerosil Co., Ltd.), heavy calcium carbonate (Whiteon SB red, manufactured by Shiraishi Calcium Co., Ltd.) and 1 part by mass of stearic acid were kneaded at 140 ° C. for 2 minutes. Thereafter, the ram was raised and cleaned, and further kneaded for 1 minute and discharged at about 150 ° C. to
- the composition obtained in the first stage was mixed with an 8-inch roll (manufactured by Nippon Roll Co., Ltd., front roll surface temperature 50 ° C., rear roll surface temperature 50 ° C., front roll A master batch (trade name: DCP-40c) containing 40% by mass of dicumyl peroxide as an organic peroxide component of 6.8 parts by mass.
- an 8-inch roll manufactured by Nippon Roll Co., Ltd., front roll surface temperature 50 ° C., rear roll surface temperature 50 ° C., front roll A master batch (trade name: DCP-40c) containing 40% by mass of dicumyl peroxide as an organic peroxide component of 6.8 parts by mass.
- the respective sheets (layer 1) and film (layer 2) were superposed.
- a sheet and a film with a Lumirror film (t 0.2 mm) sandwiched between a part of the copolymer composition sheet (width: 3 cm, length: 15 cm: gripping distance at the peeling test)
- the laminated sheet and film, in which a part of the Lumirror film is sandwiched are pressed (main press) at 180 ° C. for 10 minutes using a 100-ton press molding machine, and a copolymer is obtained.
- the composition sheet was crosslinked to obtain a laminate having a thickness of 2 mm.
- the Lumirror film is removed from the obtained laminate, and the interface between the copolymer composition sheet and the EVOH film is peeled off by hand, and the peelability (adhesiveness) is set to 1 with no adhesion and firmly adhered.
- the state where peeling by hand was not possible was set to 5, and the evaluation was carried out in 5 stages from 1 to 5.
- the SRF carbon (Asahi 50G) shown in Table 2 is SRF carbon black (Asahi # 50G, manufactured by Asahi Carbon Co., Ltd.), and Aerosil RX200 is hydrophobic fumed silica (AEROSILRX200, manufactured by Nippon Aerosil Co., Ltd.). ).
- Ethylene / vinyl acetate copolymer (C) As the ethylene / vinyl acetate copolymer (C), trade name EVAFLEC brand EVA150 MFR: 30 g / 10 min, VA content: 33 wt% and density: 960 kg / m 3 Mitsui-DuPont Polychemical Co., Ltd. (EVA150) Using.
- Example 5 (Preparation of copolymer composition)
- the copolymer (A-1) is masticated for 30 seconds using a BB-2 type Banbury mixer (manufactured by Kobe Steel), and then copolymer (A-1): 10 parts by weight of the above EVA-1, 3 parts by weight of zinc oxide (Meta Z-102, manufactured by Inoue Lime Industry Co., Ltd.), 1 part by weight of polyethylene glycol (PEG 4000, NOF Corporation) per 100 parts by weight Product), 6 parts by mass of calcium oxide (Vesta 18, manufactured by Inoue Lime Industry Co., Ltd.), 3 parts by mass of pentaerythritol tristea, paraffin wax mixture (Emaster 430W, manufactured by Riken Vitamin Co., Ltd.), 5 parts by mass FEF carbon black (Asahi # 60UG, manufactured by Asahi Carbon Co., Ltd.), 86 parts by mass of hexamethyldisilazane-treated silica
- the respective sheets (layer 1) and film (layer 2) were superposed.
- a sheet and a film with a Lumirror film (t 0.2 mm) sandwiched between a part of the copolymer composition sheet (width: 3 cm, length: 15 cm: gripping distance at the peeling test)
- the laminated sheet and film, in which a part of the Lumirror film is sandwiched are pressed (main press) at 180 ° C. for 10 minutes using a 100-ton press molding machine, and a copolymer is obtained.
- the composition sheet was crosslinked to obtain a laminate having a thickness of 2 mm.
- the Lumirror film is removed from the obtained laminate, and the interface between the copolymer composition sheet and the EVOH film is peeled off by hand, and the peelability (adhesiveness) is set to 1 with no adhesion and firmly adhered.
- the state where peeling by hand was not possible was set to 5, and the evaluation was carried out in 5 stages from 1 to 5.
- Table 4 shows the evaluation results.
- Example 6 A laminated body was obtained in the same manner as in Example 5 except that hydrophilic fumed silica (Aerosil 200, manufactured by EVONIK Co., Ltd.) was used instead of Aerosil RX200 used in Example 5. The evaluation results are shown in Table 4.
- Example 7 It replaced with the copolymer composition used in Example 5, and it carried out similarly to Example 5 except not mix
- the evaluation results are shown in Table 4.
Abstract
Description
(1)ジクミルペルオキシドを1.7~20質量部、および金属酸化物を2~20質量部
(2)親水性フュームドシリカを20~120質量部
(3)エチレン・酢酸ビニル共重合体(C)を5~50質量部
[2]エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、ジクミルペルオキシドを1.7~20質量部、および金属酸化物を2~20質量部含む共重合体組成物層とエチレン・酢酸ビニル共重合体鹸化物(B)層が積層されてなる項[1]に積層体。
本発明の積層体を形成するエチレン・α-オレフィン・非共役ポリエン共重合体組成物(以下、「共重合体組成物」と略称する場合がある。)を構成するエチレン・α-オレフィン・非共役ポリエン共重合体(A)〔以下、「共重合体(A)」と略称する場合がある。〕はエチレンと、炭素数3~20のα-オレフィンと、非共役ポリエンとをランダム共重合して得られるエチレン・α-オレフィン・非共役ポリエン共重合体である。
本発明に係わる共重合体組成物に含まれる金属酸化物は、好ましくは、酸化亜鉛あるいは酸化マグネシウムであり、金属酸化物は表面処理がなされていてもよい。
本発明に係わる共重合体組成物に含まれるジクミルペルオキシドは、重合体の架橋剤として用いられている有機過酸化物の一種である。
本発明に係わる共重合体(A)に配合される親水性フュームドシリカは、乾式シリカの一種であり、その表面にシロキサンとシラノール基など親水性を有するシリカである。かかる親水性フュームドシリカは、例えば、日本アエロジル株式会社から、フュームドシリカAEROSILの商品名でAEROSIL900、AEROSIL130、AEROSIL150、AEROSIL200、AEROSIL255、AEROSIL255、AEROSIL300、AEROSIL380、AEROSILOX50などの商品名で製造販売されている。
本発明に係わるエチレン・酢酸ビニル共重合体(C)は、エチレンと酢酸ビニルとの共重合体であって、共重合体中に存在する酢酸ビニル含量が通常、5~50重量部、好ましくは5~40重量部の範囲にある。酢酸ビニル含量がこの範囲内にあると、上記共重合体(A)に配合することにより、エチレン・酢酸ビニル共重合体鹸化物(B)層との接着強度に優れる積層体を得ることができる。
本発明に係わるエチレン・α-オレフィン・非共役ポリエン共重合体組成物は、前記エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、(1)~(3)から選ばれる1種以上の添加剤を含む共重合体組成物である。
(1)ジクミルペルオキシドを1.7~20質量部、および金属酸化物を2~20質量部
(2)親水性フュームドシリカを20~120質量部
(3)エチレン・酢酸ビニル共重合体(C)を5~50質量部
なお、上記共重合体組成物において、上記エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、(1)を含む共重合体組成物を共重合体組成物(1)、(2)を含む共重合体組成物を共重合体組成物(2)、および(3)を含む共重合体組成物を共重合体組成物(3)と呼称し、全体を示す場合は、共重合体組成物と呼称する場合がある。
本発明の積層体を形成するエチレン・α-オレフィン・非共役ポリエン共重合体組成物が上記ジクミルペルオキシドを1.7~20質量部、および金属酸化物を2~20質量部含む組成物(1)である場合は、当該共重合体(A)100質量部に対して、前記ジクミルペルオキシドを1.7~20質量部、好ましくは3.4~10.2質量部、および前記金属酸化物を2~20質量部、好ましくは2~15質量部含む。
本発明に係わる共重合体組成物(1)を構成するフィラーは、ゴム組成物に配合される公知のゴム補強剤であり、通常、カーボンブラック、無機補強剤と呼称されている無機物である。
架橋助剤としては、例えば、イオウ;p-キノンジオキシム等のキノンジオキシム系架橋助剤;エチレングリコールジメタクリレート、トリメチロールプロパントリメタクリレート等のアクリル系架橋助剤;ジアリルフタレート、トリアリルイソシアヌレート等のアリル系架橋助剤;マレイミド系架橋助剤;ジビニルベンゼン等が挙げられる。
軟化剤としては、例えば、プロセスオイル、潤滑油、パラフィン油、流動パラフィン、石油アスファルト、ワセリン等の石油系軟化剤;コールタール等のコールタール系軟化剤;ヒマシ油、アマニ油、ナタネ油、大豆油、ヤシ油等の脂肪油系軟化剤;蜜ロウ、カルナウバロウ等のロウ類;ナフテン酸、パイン油、ロジンまたはその誘導体;テルペン樹脂、石油樹脂、クマロンインデン樹脂等の合成高分子物質;ジオクチルフタレート、ジオクチルアジペート等のエステル系軟化剤;その他、マイクロクリスタリンワックス、液状ポリブタジエン、変性液状ポリブタジエン、炭化水素系合成潤滑油、トール油、サブ(ファクチス)が挙げられ、これらのうちでは、石油系軟化剤が好ましく、プロセスオイルが特に好ましい。
本発明に係わる共重合体組成物に、老化防止剤(安定剤)を配合することにより、これから形成されるシールパッキンの寿命を長くすることができる。このような老化防止剤として、従来公知の老化防止剤、例えば、アミン系老化防止剤、フェノール系老化防止剤、イオウ系老化防止剤などがある。
加工助剤としては、一般に加工助剤としてゴムに配合されるものを広く使用することができる。具体的には、リシノール酸、ステアリン酸、パルミチン酸、ラウリン酸、ステアリン酸バリウム、ステアリン酸亜鉛、ステアリン酸カルシウム、ラウリン酸亜鉛またはエステル類等が挙げられる。これらのうち、ステアリン酸が好ましい。
活性剤としては、例えば、ジ-n-ブチルアミン、ジシクロヘキシルアミン、モノエラノールアミン等のアミン類;ジエチレングリコール、ポリエチレングリコール、レシチン、トリアリルートメリレート、脂肪族カルボン酸または芳香族カルボン酸の亜鉛化合物等の活性剤;過酸化亜鉛調整物;クタデシルトリメチルアンモニウムブロミド、合成ハイドロタルサイト、特殊四級アンモニウム化合物が挙げられる。
本発明の積層体を形成するエチレン・α-オレフィン・非共役ポリエン共重合体組成物(2)は、当該共重合体(A)100質量部に対して、上記親水性フュームドシリカを20~120質量部、好ましくは20~100質量部含む共重合体組成物である。
本発明の共重合体組成物(2)を配合される構成する親水性フュームドシリカ以外のフィラーは、ゴム組成物に配合される公知のゴム補強剤であり、通常、カーボンブラック、無機補強剤と呼称されている無機物である。
本発明のエチレン・α-オレフィン・非共役ポリエン共重合体組成物(3)は、当該共重合体(A)100質量部に対して、エチレン・酢酸ビニル共重合体(C)を5~50質量部、好ましくは5~40質量部含む共重合体組成物である。
本発明に係わる共重合体組成物の製造方法としては、たとえばバンバリーミキサー、ニーダー、インターミックスのようなインターナルミキサー(密閉式混合機)類により、エチレン・α-オレフィン・非共役ポリエン共重合体ゴム(A)およびジクミルペルオキシドおよび金属酸化物、あるいは親水性フュームドシリカ、あるいはエチレン・酢酸ビニル共重合体(C)に加え、必要に応じて、フィラー、軟化剤、加工助剤、架橋助剤などを、80~170℃の温度で2~20分間混練する。次いで、得られたブレンド物に、架橋剤、軟化剤、架橋助剤加硫促進剤等の添加剤をオープンロールのようなロール類、あるいはニーダーを使用して、必要に応じて加硫促進剤、架橋助剤を追加混合し、ロール温度40~80℃で5~30分間混練した後、分出しすることにより調製することができる。
本発明の積層体を形成するエチレン・酢酸ビニル共重合体鹸化物(B)は、エチレン・ビニルアルコール共重合体とも称されているエチレン・酢酸ビニル共重合体を鹸化して得られるエチレンとビニルアルコールとの共重合体である。
本発明の積層体は、前記共重合体組成物からなる層と前記エチレン・酢酸ビニル共重合体鹸化物(B)からなる層が積層されてなる積層体である。
(エチレン・α-オレフィン・非共役ポリエン共重合体の組成、およびB値)
エチレン・α-オレフィン・非共役ポリエン共重合体の、各構成単位の質量分率(質量%)およびB値は、13C-NMRによる測定値により求めた。測定値は、ECX400P型核磁気共鳴装置(日本電子製)を用いて、測定温度:120℃、測定溶媒:オルトジクロロベンゼン/重水素化ベンゼン=4/1、積算回数:8000回にて、共重合体の13C-NMRのスペクトルを測定して得た。
エチレン・α-オレフィン・非共役ポリエン共重合体の極限粘度[η](dl/g)は、(株)離合社製 全自動極限粘度計を用いて、温度:135℃、測定溶媒:デカリンにて測定した。
エチレン・α-オレフィン・非共役ポリエン共重合体の重量平均分子量(Mw)、数平均分子量(Mn)、分子量分布(Mw/Mn)は、ゲルパーミエーションクロマトグラフィー(GPC)で測定されるポリスチレン換算の数値である。測定装置および条件は、以下のとおりである。また、分子量は、市販の単分散ポリスチレンを用いて検量線を作製し、換算法に基づいて算出した。
解析装置:Empower2(Waters社製)、
カラム:TSKgel GMH6-HT×2+TSKgel GMH6-HTL×2(7.5mmI.D.×30cm、東ソー社製)、
カラム温度:140℃、
移動相:o-ジクロロベンゼン(0.025%BHT含有)、
検出器:示差屈折計(RI)、流速:1.0mL/min、
注入量:400μL、
サンプリング時間間隔:1s、
カラム較正:単分散ポリスチレン(東ソー社製)、
分子量換算:旧法EPR換算/粘度を考慮した較正法。
(1)エチレン・α-オレフィン・非共役ポリエン共重合体の製造
[製造例1]
攪拌翼を備えた容積300Lの重合器を用いて、連続的に、エチレン、プロピレン、5-ビニル-2-ノルボルネン(VNB)の重合反応を87℃にて行った。
三井EPT 2060M:エチレン・プロピレン・ENB共重合体、ML(1+4)125℃(ASTM D 1646)=40、エチレン/プロピレン[モル比]=66/34、ENB含量[重量%]=2.3、極限粘度[η][dl/g]=2.2。
エチレン・酢酸ビニル共重合体鹸化物層は、エチレン含有量:32モル%、MFR:1.6g/10分のエチレン・酢酸ビニル共重合体鹸化物、エバール(商標)F101B[(株)クラレ製]の厚さ100μmのフィルム(EVOHフィルム)を用いた。
(共重合体組成物の調製)
第一段階として、BB-2型バンバリーミキサー(神戸製鋼所製)を用いて、製造例1で得られた共重合体(A-1)を30秒間素練りし、次いでこれに、共重合体(A-1):100質量部に対して80質量部のFEFカーボンブラック(旭#60UG、旭カーボン(株)社製)、5質量部の亜鉛華(ハクスイテック社製)、1質量部のステアリン酸、および50質量部のダイアナプロセスオイルPS-430(出光興産製)加え、140℃で2分間混練した。その後、ラムを上昇させ掃除を行ない、さらに、1分間混練を行ない、約150℃で排出し、第一段階の配合物を得た。
(T型剥離試験用の積層体の作製)
上記共重合体組成物の調製で得られた共重合体組成物をシート状に分出した。次に分出した共重合体組成物シート50gを、延伸ポリエチレンテレフタレートフィルム(東レ製 商品名:ルミラー)で共重合体組成物シートの上下を挟んだ。ルミラーフィルムで上下が挟まれた共重合体組成物シートを、50トンプレス成形機を用いて、120℃で2分間プレスし、t(厚さ)=1mm、20cm四方の共重合体組成物シートを作製した。
実施例1で用いた共重合体組成物に替えて、5質量部の亜鉛華(ハクスイテック社製)を5質量部の酸化マグネシウム(キョーワマグ150(協和化学工業(株)社製)に替える以外は、実施例1と同様に行い、共重合体組成物、および積層体を得た。
実施例1で用いた共重合体(A-1)に替えて、共重合体(A-2)を用いる以外は、実施例1と同様に行い、共重合体組成物、および積層体を得た。得られた積層体の評価結果を表2に示す。
実施例2で用いたジクミルパーオキシドを40質量%含有するマスターバッチに替えて、架橋剤として、2,5-Dimethyl-2,5-(t-butylperoxy)hexane:パーヘキサ25B(日本油脂(株)製)3質量部およびトリメチロールプロパントリメタクリレート:ハイクロスM(精工化学(株)製)3質量部を用いる以外は実施例1と同様に行い、共重合体組成物、および積層体を得た。
実施例1で用いた共重合体組成物に替えて、ジクミルパーオキシドを40質量%含有するマスターバッチを配合しない共重合体組成物を用いる以外は、実施例1と同様に行い、共重合体組成物、および積層体を得た。
実施例3で用いたジクミルパーオキシドを40質量%含有するマスターバッチに替えて、架橋剤および架橋助剤として、粉末硫黄1.5質量部、テトラメチルチウラムジスルフィド 商品名:ノクセラーTT-P(TT)(大内新興化学工業(株)製)1質量部、および2-メルカプトベンゾチアゾール 商品名ノクセラーM-P(M)(大内新興化学工業(株)製)0.5質量部を用いる以外は実施例3と同様に行い、共重合体組成物、および積層体を得た。
(共重合体組成物の調製)
第一段階として、BB-2型バンバリーミキサー(神戸製鋼所製)を用いて、上記共重合体(A-1)を30秒間素練りし、次いでこれに、共重合体(A-1):100質量部に対して3質量部の活性亜鉛華(メタZ-102、井上石灰工業(株))、5質量部のFEFカーボンブラック(旭#60UG、旭カーボン(株)社製)、86質量部の親水性フュームドシリカ(AEROSIL200、日本アエロジル株式会社製)、重質炭酸カルシウム(ホワイトンSB赤、白石カルシウム(株)製)及び1質量部のステアリン酸を140℃で2分間混練した。その後、ラムを上昇させ掃除を行ない、さらに、1分間混練を行ない、約150℃で排出し、第一段階の配合物を得た。
(T型剥離試験用の積層体の作製)
上記共重合体組成物の調製で得られた共重合体組成物をシート状に分出した。次に分出した共重合体組成物シート50gを、延伸ポリエチレンテレフタレートフィルム(東レ製 商品名:ルミラー)で共重合体組成物シートの上下を挟んだ。ルミラーフィルムで上下が挟まれた共重合体組成物シートを、50トンプレス成形機を用いて、120℃で2分間プレスし、t(厚さ)=1mm、20cm四方の共重合体組成物シートを作製した。
実施例4で用いた共重合体組成物に替えて、表2に示す配合剤を表2に示す配合量で用いる以下は、実施例4と同様に行い、積層体を得た。
エチレン・酢酸ビニル共重合体(C)として、商品名 エバフレック 銘柄EVA150 MFR:30g/10分、VA含有量:33重量%および密度:960kg/m3 三井・デュポンポリケミカル株式会社製(EVA150)を用いた。
(共重合体組成物の調製)
第一段階として、BB-2型バンバリーミキサー(神戸製鋼所製)を用いて、上記共重合体(A-1)を30秒間素練りし、次いでこれに、共重合体(A-1):100質量部に対して10質量部の上記EVA-1、3質量部の酸化亜鉛(メタZ-102、井上石灰工業(株)製)、1質量部のポリエチレングリコール(PEG4000、日油(株)製)、6質量部の酸化カルシウム(ベスタ18、井上石灰工業(株)製)、3質量部のペンタエリスリトールトリステア、パラフィンワックス混合物(エマスター430W、理研ビタミン(株)製)、5質量部のFEFカーボンブラック(旭#60UG、旭カーボン(株)社製)、86質量部のヘキサメチルジシラザン処理シリカ(アエロジルRX200、EVONIK(株)製)、重質炭酸カルシウム(ホワイトンSB赤、白石カルシウム(株)製)及び1質量部のステアリン酸を140℃で2分間混練した。その後、ラムを上昇させ掃除を行ない、さらに、1分間混練を行ない、約150℃で排出し、第一段階の配合物を得た。
(T型剥離試験用の積層体の作製)
上記共重合体組成物の調製で得られた共重合体組成物をシート状に分出した。次に分出した共重合体組成物シート50gを、延伸ポリエチレンテレフタレートフィルム(東レ製 商品名:ルミラー)で共重合体組成物シートの上下を挟んだ。ルミラーフィルムで上下が挟まれた共重合体組成物シートを、50トンプレス成形機を用いて、120℃で2分間プレスし、t(厚さ)=1mm、20cm四方の共重合体組成物シートを作製した。
実施例5で用いたアエロジルRX200に替えて、親水性ヒュームドシリカ(アエロジル200、EVONIK(株)製)を用いた以外は実施例5と同様に行い積層体を得た。評価結果を表4に示す。
実施例5で用いた共重合体組成物に替えて、アエロジルRX200とEVA150を配合しない以外は実施例5と同様に行い積層体を得た。評価結果を表4に示す。
実施例6で用いた共重合体組成物に替えて、EVA150を配合しない以外は実施例6と同様に行い積層体を得た。評価結果を表4に示す。
Claims (7)
- エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、(1)~(3)から選ばれる1種以上の添加剤を含む共重合体組成物層とエチレン・酢酸ビニル共重合体鹸化物(B)層が積層されてなる積層体。
(1)ジクミルペルオキシドを1.7~20質量部、および金属酸化物を2~20質量部
(2)親水性フュームドシリカを20~120質量部
(3)エチレン・酢酸ビニル共重合体(C)を5~50質量部 - エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、ジクミルペルオキシドを1.7~20質量部、および金属酸化物を2~20質量部含む共重合体組成物(1)層とエチレン・酢酸ビニル共重合体鹸化物(B)層が積層されてなる請求項1に記載の積層体。
- 金属酸化物が、酸化亜鉛または酸化マグネシウムである請求項2に記載の積層体。
- エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、親水性フュームドシリカを20~120質量部含む共重合体組成物(2)層とエチレン・酢酸ビニル共重合体鹸化物(B)層が積層されてなる請求項1に記載の積層体。
- 請求項4に記載の共重合体組成物層を形成する共重合体組成物(2)が、さらにジクミルペルオキシドを1.7~20質量部含む共重合体組成物である請求項4に記載の積層体。
- エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、エチレン・酢酸ビニル共重合体(C)を5~50質量部含むことを特徴とする共重合体組成物(3)。
- エチレン・α-オレフィン・非共役ポリエン共重合体(A)、当該エチレン・α-オレフィン・非共役ポリエン共重合体(A):100質量部に対して、エチレン・酢酸ビニル共重合体(C)を5~50質量部含む共重合体組成物(3)からなる層とエチレン・酢酸ビニル共重合体鹸化物(B)からなる層が積層されてなる請求項1に記載の積層体。
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CN201980019084.4A CN111902279B (zh) | 2018-03-16 | 2019-03-08 | 乙烯-α-烯烃-非共轭多烯共聚物组合物及其层叠体 |
JP2020506477A JP7108019B2 (ja) | 2018-03-16 | 2019-03-08 | エチレン・α-オレフィン・非共役ポリエン共重合体組成物を含む積層体、並びにエチレン・α-オレフィン・非共役ポリエン共重合体組成物 |
EP19768228.9A EP3766699A4 (en) | 2018-03-16 | 2019-03-08 | LAMINATE WITH A COMPOSITION OF ETHYLENE / ALPHA-OLEFIN / NON-CONJUGATED POLYEN-COPOLYMER AND COMPOSITION OF ETHYLENE / ALPHA-OLEFIN / NON-CONJUGATED POLYEN-COPOLYMER |
US16/980,028 US11312114B2 (en) | 2018-03-16 | 2019-03-08 | Laminate including ethylene/α-olefin/non-conjugated polyene copolymer composition, and ethylene/α-olefin/non-conjugated polyene copolymer composition |
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JP2020157661A (ja) * | 2019-03-27 | 2020-10-01 | 三井化学株式会社 | 複合成形体およびその製造方法 |
JP7481884B2 (ja) | 2020-03-31 | 2024-05-13 | 三井化学株式会社 | エチレン・α-オレフィン・非共役ポリエン共重合体組成物およびその用途 |
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TWI805713B (zh) | 2023-06-21 |
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EP3766699A4 (en) | 2021-12-15 |
JP7108019B2 (ja) | 2022-07-27 |
EP3766699A1 (en) | 2021-01-20 |
KR20200123191A (ko) | 2020-10-28 |
US20210008853A1 (en) | 2021-01-14 |
US11312114B2 (en) | 2022-04-26 |
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CN111902279B (zh) | 2022-06-24 |
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