WO2022049872A1 - フェノチアジン誘導体およびアクリルゴム組成物 - Google Patents
フェノチアジン誘導体およびアクリルゴム組成物 Download PDFInfo
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- WO2022049872A1 WO2022049872A1 PCT/JP2021/023915 JP2021023915W WO2022049872A1 WO 2022049872 A1 WO2022049872 A1 WO 2022049872A1 JP 2021023915 W JP2021023915 W JP 2021023915W WO 2022049872 A1 WO2022049872 A1 WO 2022049872A1
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- WIPO (PCT)
- Prior art keywords
- group
- acrylic rubber
- carboxyl group
- containing acrylic
- rubber composition
- Prior art date
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- 229920000058 polyacrylate Polymers 0.000 title claims abstract description 68
- 239000000203 mixture Substances 0.000 title claims abstract description 27
- 125000001484 phenothiazinyl group Chemical class C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 title claims abstract 7
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 42
- 238000004132 cross linking Methods 0.000 claims abstract description 24
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 17
- 125000003710 aryl alkyl group Chemical group 0.000 claims abstract description 13
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 10
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims abstract description 4
- -1 amine compound Chemical class 0.000 claims description 65
- 150000001875 compounds Chemical class 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 14
- XSQHUYDRSDBCHN-UHFFFAOYSA-N 2,3-dimethyl-2-propan-2-ylbutanenitrile Chemical compound CC(C)C(C)(C#N)C(C)C XSQHUYDRSDBCHN-UHFFFAOYSA-N 0.000 claims description 4
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 4
- ZRALSGWEFCBTJO-UHFFFAOYSA-N anhydrous guanidine Natural products NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 4
- OPNUROKCUBTKLF-UHFFFAOYSA-N 1,2-bis(2-methylphenyl)guanidine Chemical compound CC1=CC=CC=C1N\C(N)=N\C1=CC=CC=C1C OPNUROKCUBTKLF-UHFFFAOYSA-N 0.000 claims description 3
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 3
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 claims description 3
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 claims description 3
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- 230000000052 comparative effect Effects 0.000 description 11
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- 239000002253 acid Substances 0.000 description 8
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- 125000004434 sulfur atom Chemical group 0.000 description 3
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- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- XYGMTBGUABLGQJ-UHFFFAOYSA-N octadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCN.CCCCCCCCCCCCCCCCCCN XYGMTBGUABLGQJ-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- ULDDEWDFUNBUCM-UHFFFAOYSA-N pentyl prop-2-enoate Chemical compound CCCCCOC(=O)C=C ULDDEWDFUNBUCM-UHFFFAOYSA-N 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
- 235000019381 petroleum wax Nutrition 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000004986 phenylenediamines Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 150000003021 phthalic acid derivatives Chemical class 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000003329 sebacic acid derivatives Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- SWZDQOUHBYYPJD-UHFFFAOYSA-N tridodecylamine Chemical compound CCCCCCCCCCCCN(CCCCCCCCCCCC)CCCCCCCCCCCC SWZDQOUHBYYPJD-UHFFFAOYSA-N 0.000 description 1
- GBXQPDCOMJJCMJ-UHFFFAOYSA-M trimethyl-[6-(trimethylazaniumyl)hexyl]azanium;bromide Chemical group [Br-].C[N+](C)(C)CCCCCC[N+](C)(C)C GBXQPDCOMJJCMJ-UHFFFAOYSA-M 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D279/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one sulfur atom as the only ring hetero atoms
- C07D279/10—1,4-Thiazines; Hydrogenated 1,4-thiazines
- C07D279/14—1,4-Thiazines; Hydrogenated 1,4-thiazines condensed with carbocyclic rings or ring systems
- C07D279/18—[b, e]-condensed with two six-membered rings
- C07D279/34—[b, e]-condensed with two six-membered rings with hetero atoms directly attached to the ring sulfur atom
-
- 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
-
- 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
-
- 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
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
-
- 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
- C08K5/205—Compounds containing groups, e.g. carbamates
-
- 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
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
- C08K5/31—Guanidine; Derivatives thereof
-
- 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
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
- C08K5/3462—Six-membered rings
- C08K5/3465—Six-membered rings condensed with carbocyclic rings
-
- 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
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/45—Heterocyclic compounds having sulfur in the ring
- C08K5/46—Heterocyclic compounds having sulfur in the ring with oxygen or nitrogen in the ring
-
- 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
- C08L33/062—Copolymers with monomers not covered by C08L33/06
- C08L33/064—Copolymers with monomers not covered by C08L33/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
-
- 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
- C08F2810/00—Chemical modification of a polymer
- C08F2810/20—Chemical modification of a polymer leading to a crosslinking, either explicitly or inherently
Definitions
- the present invention relates to a phenothiazine derivative and a carboxyl group-containing acrylic rubber composition containing the same. More specifically, the present invention relates to a phenothiazine derivative capable of improving the heat resistance of acrylic rubber and a carboxyl group-containing acrylic rubber composition containing the same.
- Diphenylamine-based anti-aging agents are examples of amine-based anti-aging agents, and examples thereof include 4,4'-bis ( ⁇ , ⁇ -dimethylbenzyl) diphenylamine (Patent Documents 1 to 4).
- Patent Document 5 describes (A) diene-based rubber, (B) bismaleimide compound, and (C) the following as rubber materials that are excellent in vulcanization properties, mechanical properties, and heat aging properties and are particularly suitable for anti-vibration rubber applications. Those containing a phenothiazine compound are described.
- R 1 , R 2 Hydrogen atom, alkyl group of C 1 to C 8 which may be substituted with an aromatic ring, alkoxy group, Halogen atom, cyano group
- R 3 Hydrogen atom, chain or cyclic alkyl group of C 1 to C 6 , vinyl group, aromatic group m, n: 0 to 2
- R 1 and R 2 do not mention the aralkyl group.
- the oxidation state of the sulfur atom at the 5-position is a sulfoxide or a sulfone group.
- Patent Document 6 a phenothiazine compound in which the sulfur atom at the 5-position is -SO 2- is also known, and is described in, for example, Patent Document 6.
- This document describes a condensed heterocyclic compound represented by the following general formula and an organic material composition containing the same, for organic materials such as polymers susceptible to oxidative, thermal or photoinduced disintegration. It is stated that it is possible to impart high processing stability, heat resistance, and long life.
- CD-SO 2 a compound shown below (hereinafter abbreviated as CD-SO 2 ) can be mentioned as a specific example of the above general formula, but since the compound has poor compatibility with an acrylic elastomer, it has a crosslinkable composition by an open roll or the like. Poor dispersion may occur when forming an object.
- Phenothiazine compounds typified by CD-SO 2 can improve the heat resistance of acrylic rubber materials, but have a problem in dispersibility in acrylic rubber, and improvement thereof is desired.
- An object of the present invention is to provide a novel compound having an antiaging action, which makes it possible to improve the heat resistance of acrylic rubber and also has excellent dispersibility in acrylic rubber, and an acrylic rubber composition containing the same. To do.
- the first object of the present invention is the general formula.
- R 1 is a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms
- R 2 and Ar are aralkyl groups
- R 2 is an aralkyl group having 1 carbon atom. It is achieved by a phenothiazine derivative represented by (1 to 10 divalent aliphatic hydrocarbon groups, where Ar is a monovalent aromatic hydrocarbon group having 6 to 10 carbon atoms).
- a second object of the present invention is to apply to 100 parts by weight of the carboxyl group-containing acrylic rubber.
- A 0.1 to 5 parts by weight of phenothiazine derivative represented by the formula [I]
- B 0.1 to 3 parts by weight of cross-linking agent for carboxyl group-containing acrylic rubber
- C 0.1 to 5 parts by weight of cross-linking accelerator for carboxyl group-containing acrylic rubber Achieved by a carboxyl group-containing acrylic rubber composition comprising a moiety.
- a phenothiazine derivative having improved heat resistance of a carboxyl group-containing acrylic rubber and having excellent dispersibility in acrylic rubber and a carboxyl group-containing acrylic rubber containing the same are provided. Further, as compared with the conventional diphenylamine-based antiaging agent, it is possible to suppress a decrease in elongation at break of the acrylic rubber crosslinked product in a high temperature environment.
- the rate of change in breaking strength of the acrylic rubber crosslinked product is schematized (solid line: Example 3, broken line: Example 4, alternate long and short dash line: Comparative Example 1, dotted line: Comparative Example 2).
- the rate of change in elongation at break of the acrylic rubber crosslinked product is schematized (solid line: Example 3, broken line: Example 4, alternate long and short dash line: Comparative Example 1, dotted line: Comparative Example 2).
- R 1 is a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms. Specifically, methyl group, ethyl group, n-propyl group, n-butyl group, isobutyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, 2-ethylhexyl group, n -Primary hydrocarbon groups such as nonyl group, n-undecyl group, n-pentadecyl group, n-heptadecyl group, isopropyl group, 2-butyl group, 2-pentyl group, 3-pentyl group, 2-hexyl group, 3 -Secondary hydrocarbon groups such as hexyl group, 2-heptyl group, 3-
- the R 2 is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, and specific examples thereof include a methylene group, an ethylidene group and 1 -Propyridene group, 2-propyridene group, 1-butylidene group can be mentioned.
- Ar is a monovalent aromatic hydrocarbon group having 1 to 10 carbon atoms, and specific examples thereof include a phenyl group and a naphthyl group. As R 2 and Ar, ⁇ , ⁇ -dimethylbenzyl group is preferable.
- Such a compound particularly a compound in which the aralkyl group is an ⁇ , ⁇ -dimethylbenzyl group, is the following compound (hereinafter abbreviated as CD-S) by the method described in Patent Document 6.
- CD-S a compound in which the aralkyl group is an ⁇ , ⁇ -dimethylbenzyl group
- CD-S a compound in which the aralkyl group is an ⁇ , ⁇ -dimethylbenzyl group
- CD-S oxidizing agent such as hydrogen peroxide / acetic acid
- an alkylating agent represented by R 1 -X (X is a chlorine atom, a bromine atom or an iodine atom) can be used.
- the amount used is in the range of about 1 to 2 mol per 1 mol of compound CD-S.
- a base such as sodium hydride or potassium tert-butoxide
- an alkylating agent it is preferable to react a base such as sodium hydride or potassium tert-butoxide with CD-S and then react with an alkylating agent.
- the amount of the base used is in the range of about 1 to 2 mol with respect to 1 mol of the compound CD-S.
- reaction solvent N, N-dimethylformamide, tetrahydrofuran, N-methylpyrrolidone, dimethyl sulfoxide and the like can be used.
- the reaction between CD-S and the base is about 0 to 10 ° C, and the reaction with the alkylating agent is 0 to 100 ° C.
- Metachloroperbenzoic acid, peracetic acid, acetic acid / hydrogen peroxide are used as the oxidizing agent used in the oxidation reaction.
- the amount of the oxidizing agent used is about 2 to 10 mol per 1 mol of the alkylated CD-S.
- reaction solvent aromatic hydrocarbon solvents such as toluene and xylene, aliphatic hydrocarbon solvents such as hexane and octane, chlorine-containing hydrocarbon solvents such as dichloromethane and chlorobenzene, acetic acid and the like are used. These solvents can be used alone or in combination of two or more.
- the reaction is carried out in the range of about 50 to 150 ° C, preferably about 80 to 120 ° C.
- the carboxyl group-containing acrylic rubber composition is formed by blending the carboxyl group-containing acrylic rubber with the phenothiazine derivative [I], a cross-linking agent for a carboxyl group-containing acrylic rubber, and a cross-linking accelerator for a carboxyl group-containing acrylic rubber.
- Acrylic rubber is formed by blending the carboxyl group-containing acrylic rubber with the phenothiazine derivative [I], a cross-linking agent for a carboxyl group-containing acrylic rubber, and a cross-linking accelerator for a carboxyl group-containing acrylic rubber.
- the phenothiazine derivative [I] of the present invention is used in an amount of about 0.1 to 5 parts by weight based on 100 parts by weight of the carboxyl group-containing acrylic rubber. If the amount of the phenothiazine derivative [I] is less than this, sufficient heat resistance and compression set resistance cannot be imparted to the acrylic rubber crosslinked product. Further, even if a larger amount of the phenothiazine derivative [I] is used, the heat resistance and compression-resistant permanent strain characteristics of the acrylic rubber crosslinked product cannot be improved, which is uneconomical.
- acrylic rubber examples include a carboxyl group-containing acrylic rubber, an epoxy group-containing acrylic rubber, and an active chlorine group-containing acrylic rubber, and a carboxyl group-containing acrylic rubber is particularly preferable.
- acrylic rubber that are generally available include the Nipole AR series of ZEON products, the Denka ER series of electrochemical industry products, the Knoxtight series of NOK products, and the Vamac series of DuPont products. can.
- the carboxyl group-containing acrylic rubber is obtained by copolymerizing at least one of an alkyl acrylate and an alkoxyalkyl acrylate as a copolymerization component with a carboxyl group-containing unsaturated compound.
- alkyl acrylate an alkyl acrylate having an alkyl group having 1 to 8 carbon atoms is used.
- methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, n-pentyl acrylate, n-hexyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate, 2-cyanoethyl acrylate and the like are used.
- ethyl acrylate and n-butyl acrylate are preferably used.
- alkoxyalkyl acrylate an alkoxyalkyl acrylate having an alkoxyalkyl group having 2 to 8 carbon atoms is used.
- methoxymethyl acrylate, ethoxymethyl acrylate, 2-methoxyethyl acrylate, 2-ethoxyethyl acrylate, 2-n-butoxyethyl acrylate and the like are used, and 2-methoxyethyl acrylate and 2-ethoxyethyl acrylate are preferably used.
- alkyl acrylates or alkoxyalkyl acrylates are generally used in the copolymerization reaction at a ratio of about 60 to 99.9% by weight, preferably about 80 to 99% by weight in the monomer mixture, and the polymerization reaction rate of the copolymerization reaction is 90% or more. Then, the monomer mixing ratio is almost the copolymerization ratio.
- the alkoxyalkyl acrylate and the alkyl acrylate may be used alone, but preferably the former is used in a proportion of about 60 to 0% by weight and the latter is used in a proportion of about 40 to 100% by weight, and the alkoxyalkyl acrylate is copolymerized. In some cases, the balance between oil resistance and cold resistance becomes good, but if copolymerization is carried out at a higher ratio than this, the normal physical properties and heat resistance tend to decrease.
- carboxyl group-containing unsaturated compound examples include monobasic acid unsaturated compounds such as acrylic acid and methacrylic acid, dibasic acid unsaturated compounds such as maleic acid, fumaric acid, itaconic acid and citraconic acid, monomethyl maleate and maleic acid.
- Dibasic acid unsaturated compound monoesters such as monoethyl, mono-n-butyl maleate, monomethyl fumarate, monoethyl fumarate, and mono-n-butyl fumarate are used.
- mono-n-butyl maleate and mono-n-butyl fumarate are used.
- carboxyl group-containing unsaturated compounds are used in a proportion of about 0.1 to 10% by weight, preferably about 1 to 5% by weight, in the monomer mixture.
- an ethylenically unsaturated compound copolymerizable with the above acrylate may be copolymerized at a ratio of about 20% by weight or less, preferably about 10% by weight or less.
- examples of the ethylenically unsaturated compound include alkyl methacrylate, alkoxyalkyl methacrylate, styrene, ⁇ -methyl styrene, 4-methyl styrene, acrylic acid amide, vinyl acetate, cyclohexyl acrylate, benzyl acrylate, vinyl chloride, vinylidene chloride, and the like. Examples thereof include acrylonitrile, ethyl vinyl ether, butyl vinyl ether, ethylene, propylene, butadiene, isoprene, and chloroprene.
- a polyvalent amine compound or a derivative thereof is used as a cross-linking agent for the carboxyl group-containing acrylic rubber.
- an aliphatic polyvalent amine compound, a carbonate of an aliphatic polyvalent amine compound, an aliphatic polyvalent amine compound in which an amino group is protected by an organic group, or an aromatic polyvalent amine compound can be used.
- the aliphatic polyvalent amine compound includes hexamethylenediamine.
- the carbonate of the aliphatic polyvalent amine compound include hexamethylenediamine carbamate.
- Examples of the aliphatic polyvalent amine in which the amino group is protected by an organic group include N, N'-dicinnamylidene-1,6-hexanediamine or the compound disclosed in Patent Document 7.
- aromatic polyvalent amine compound examples include 4,4'-methylenedianiline, m-phenylenediamine, p-phenylenediamine, 4,4'-diaminodiphenyl ether, and 4,4'-bis (4-aminophenoxy) biphenyl.
- polyvalent amine compounds listed above may be used alone or in combination of two or more. Of these, hexamethylenediamine carbamate, 4,4'-diaminodiphenyl ether, and 2,2-bis [4- (4-aminophenoxy) phenyl] propane are preferable.
- the above cross-linking agent is used in an amount of about 0.1 to 3 parts by weight with respect to 100 parts by weight of acrylic rubber. If the amount of the cross-linking agent is less than this, the cross-linking becomes insufficient, which leads to a decrease in the mechanical properties of the cross-linked product and a decrease in the cross-linking speed. If the amount of the cross-linking agent is larger than this, the cross-linking may proceed excessively, resulting in a decrease in the elasticity of the cross-linked product and a deterioration in the compression resistance permanent strain characteristics.
- cross-linking accelerator for the carboxyl group-containing acrylic rubber a guanidine compound, a diazabicycloalkene compound or an organic acid salt thereof, or an aliphatic tertiary monoamine compound is used.
- guanidine compound examples include tetramethylguanidine, tetraethylguanidine, 1,3-diphenylguanidine, 1,3-di-o-tolylguanidine and the like.
- it is 1,3-diphenylguanidine, 1,3-di-o-tolylguanidine or a combination thereof.
- 1,8-diazabicyclo [5.4.0] -7-undecene or an organic acid salt thereof is preferable.
- organic acid used for the organic acid salt of 1,8-diazabicyclo [5.4.0] -7-undecene include organic monobasic acid and organic dibasic acid.
- Examples of the organic monobasic acid include n-hexanoic acid, n-heptanoic acid, n-octanoic acid, 2-ethylhexanoic acid, n-capric acid, n-lauric acid, p-toluenesulfonic acid, phenol and the like.
- Examples of the organic dibasic acid include adipic acid, pimelli acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, terephthalic acid, orthophthalic acid, and phthalic acid.
- a monocarboxylic acid or a dicarboxylic acid having 6 to 18 carbon atoms is preferable.
- Examples of the aliphatic tertiary monoamine compounds include tri-n-octylamine, tri-2-ethylhexylamine, tri-n-decylamine, tri-n-dodecylamine, tri-n-tetradecylamine, and tri-n-hexadecyl.
- Examples include amines, N, N-dimethyloctadecylamines, etc., especially N, N-dimethyldecylamines, N, N-dimethylundecylamines, N, N-dimethyldodecylamines, N, N-dimethyltetradecylamines, N. , N-dimethylhexadecylamine, N, N-dimethyloctadecylamine are preferred.
- the above-mentioned cross-linking accelerator is used in an amount of about 0.1 to 5 parts by weight, preferably about 0.3 to 3 parts by weight, based on 100 parts by weight of acrylic rubber. If the amount of the cross-linking accelerator is less than this, the cross-linking rate may be significantly reduced, the mechanical properties of the acrylic rubber after cross-linking may be deteriorated, and the mechanical properties after heat aging may be deteriorated. On the other hand, if it is used more than this, the compression resistance permanent strain characteristics of acrylic rubber may be deteriorated.
- the carboxyl group-containing acrylic rubber composition may include, for example, a filler, a processing aid, a plasticizer, a softener, a colorant, a stabilizer, an adhesive aid, a mold release agent, a conductivity-imparting agent, and a heat conductivity.
- Various additives such as sex-imparting agents, surface non-adhesive agents, tack-imparting agents, flexibility-imparting agents, heat resistance improving agents, flame-retardant agents, ultraviolet absorbers, oil resistance improving agents, scorch inhibitors, lubricants, etc. can be blended. can.
- silica such as basic silica and acidic silica, metal oxides such as zinc oxide, calcium oxide, titanium oxide and aluminum oxide; metal hydroxides such as magnesium hydroxide, aluminum hydroxide and calcium hydroxide; Sulfides such as magnesium carbonate, aluminum carbonate, calcium carbonate, barium carbonate; silicates such as magnesium silicate, calcium silicate, sodium silicate, aluminum silicate; sulfates such as aluminum sulfate, calcium sulfate, barium sulfate; Metallic sulfides such as molybdenum disulfide, iron sulfide, copper sulfide; synthetic hydrotalcite, silicate soil, asbestos, lithopon (zinc sulfide / barium sulfide), graphite, carbon black (MT carbon black, SRF carbon black, FEF carbon) Black, etc.), carbon fluoride, calcium fluoride, coke, quartz fine powder, zinc flower, talc, mica powder, wollastonite, carbon fluoride,
- Processing aids include higher fatty acids such as stearic acid, oleic acid, palmitic acid, and lauric acid; higher fatty acid salts such as sodium stearate and zinc stearate; higher fatty acid amides such as stearic acid amide and oleic acid amide; oleic acid.
- Higher fatty acid esters such as ethyl, higher aliphatic amines such as stearylamine and oleylamine; petroleum waxes such as carnauba wax and selecin wax; polyglycols such as ethylene glycol, glycerin and diethylene glycol; aliphatic hydrocarbons such as vaseline and paraffin; Examples thereof include silicone-based oils, silicone-based polymers, low-molecular-weight polyethylenes, phthalates, phosphate esters, rosins, (halogenated) dialkylamines, (halogenated) dialkyl sulphons, and surfactants.
- silicone-based oils silicone-based polymers, low-molecular-weight polyethylenes, phthalates, phosphate esters, rosins, (halogenated) dialkylamines, (halogenated) dialkyl sulphons, and surfactants.
- Plasticizers include, for example, epoxy resins, phthalic acid derivatives, sebacic acid derivatives, softeners include, for example, lubricating oils, process oils, coal tar, castor oil, calcium stearate, and antiaging agents, such as phenylenediamines and phos. Examples thereof include fates, quinolines, cresols, phenols, dithiocarbamate metal salts and the like.
- the carboxyl group-containing acrylic rubber composition is prepared by blending the carboxyl group-containing acrylic rubber with a phenothiazine derivative [I], a cross-linking agent, a cross-linking accelerator, and other compounding agents used as necessary, and a Banbury mixer. It can be mixed by using a pressurized kneader, an open roll, or the like.
- the cross-linking is carried out by primary cross-linking at about 120 to 250 ° C. for about 1 to 60 minutes and oven cross-linking (secondary cross-linking) at about 120 to 200 ° C. for about 1 to 20 hours as needed.
- Reference example 2 Manufacture of 3,7-bis ( ⁇ , ⁇ -dimethylbenzyl) -10H-phenothiazine-5,5-dioxide [CD-SO 2 ] Magnet stir bar, thermometer, nitrogen gas inlet and outlet, and reflux condenser 24.9 g (0.125 mol) of phenothiazine, 0.6 g of p-toluenesulfonic acid and 115 ml of toluene were put into the provided four-necked flask with a capacity of 500 ml, heated to 80 ° C, and then ⁇ -methylstyrene 29.5 g (0.25 mol). Was added, and the mixture was reacted in a nitrogen gas atmosphere for 1 hour.
- CD-SO 2 Magnet stir bar, thermometer, nitrogen gas inlet and outlet, and reflux condenser 24.9 g (0.125 mol) of phenothiazine, 0.6 g of p-toluenesulfonic acid and
- Example 1 Manufacture of 10-benzyl-3,7-bis ( ⁇ , ⁇ -dimethylbenzyl) -10H-phenothiazine-5,5-dioxide [CD-SO 2 -Bn] Magnet stirrer, thermometer, gas inlet and outlet 21.8 g (50 mmol) of purified CD-S and 160 ml of N, N-dimethylformamide were placed in a 300 ml four-necked flask equipped with a reflux condenser and cooled to 5 ° C or lower under a nitrogen atmosphere. Sodium hydride 1.8 g (75 mmol) was added and reacted for 1 hour while keeping the temperature in the system below 10 ° C.
- Example 2 Manufacture of 10-n-propyl-3,7-bis ( ⁇ , ⁇ -dimethylbenzyl) -10H-phenothiazine-5,5-dioxide [CD-SO 2 -Pr] Magnet stirrer, thermometer, gas inlet 21.8 g (50 mmol) of purified CD-S and 160 ml of N, N-dimethylformamide were placed in a 300 ml four-necked flask equipped with a discharge port and a reflux condenser, and cooled to 5 ° C. or lower under a nitrogen atmosphere. Sodium hydride 1.8 g (75 mmol) was added and reacted for 1 hour while keeping the temperature in the system below 10 ° C.
- Example 3 100 parts by weight of acrylic rubber containing carboxyl group (Unimatec product Knoxtight PA-521, Tg: -21 °C) FEF Carbon Black (Tokai Carbon Product Seest GSO) 60 ⁇ Stearic acid (Miyoshi Oil & Fat Product TST) 1 ⁇ Polyoxyethylene stearyl ether phosphoric acid 0.5 ⁇ (Toho Chemical Industry Product Phosphanol RL-210) Stearylamine (n-octadecylamine) 1 ⁇ (Kao Chemical Product Fermin 80S) Crosslink accelerator 1 ⁇ (Safic-Alcan product Vulcofac ACT55) Hexamethylenediamine Carbamate 0.6 ⁇ (Unimatec product Cheminox AC6F) CD-SO 2 -Bn 2 ⁇
- carboxyl group-containing acrylic rubber, FEF carbon black, stearic acid and polyoxyethylene stearyl ether phosphoric acid were mixed with a Banbury mixer.
- a predetermined amount of the remaining components was mixed with the obtained admixture with an open roll to obtain an acrylic rubber composition. This was subjected to primary cross-linking at 180 ° C for 8 minutes and oven cross-linking at 175 ° C for 4 hours using a 100-ton press molding machine. A columnar crosslinked product was obtained.
- the surface of the acrylic rubber composition obtained by miscibility with an open roll was visually observed to check for the presence or absence of minute white spots caused by the antiaging agent.
- the cross-linking characteristics of the acrylic rubber composition and the physical properties of the cross-linked product were measured as follows.
- Mooney scorch test JIS K 6300-1 compliant (125 ° C) compliant with ISO 289-1 Moony Viscometer AM-3 manufactured by Toyo Seiki Seisakusho Measure the minimum Mooney viscosity (ML min) and scorch time (t5) values using the cross-linking test: JIS K 6300-2 compliant (180 ° C, 12 minutes) corresponding to ISO 6502.
- Example 4 In Example 3, the same amount (2 parts by weight) of CD-SO 2 -Pr was used instead of CD-SO 2 -Bn.
- Example 3 Comparative Example 1 In Example 3, the same amount (2 parts by weight) of 4,4'-bis ( ⁇ , ⁇ -dimethylbenzyl) diphenylamine (Ouchi Shinko Kagaku Kogyo product Nocrack CD) was used instead of CD-SO 2 -Bn. Was done.
- Example 3 Comparative Example 2 In Example 3, the same amount (2 parts by weight) of CD-SO 2 was used instead of CD-SO 2 -Bn.
- the dispersibility of the anti-aging agent in the uncrosslinked acrylic rubber composition was used in CD-SO 2 -Bn and Example 4 used in Example 3 as compared to CD-SO 2 used in Comparative Example 2.
- the CD-SO 2 -Pr was good and was equivalent to the Nocrac CD used in Comparative Example 1.
- the rate of decrease in elongation at break was suppressed to be lower than that in Comparative Example 1.
- the rate of change in breaking strength for a test time of 250 to 500 hours overlaps with that of Example 1 and Comparative Example 2.
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Abstract
Description
R1、R2:水素原子、芳香族環で置換されてもよい
C1~C8のアルキル基、アルコキシ基、
ハロゲン原子、シアノ基
R3:水素原子、C1~C6の鎖状または環状のアル
キル基、ビニル基、芳香族基
m、n:0~2
しかしながら、上記化合物においてR3が水素原子以外については、具体例によりその効果が実証されていない。また、R1およびR2がアラルキル基については言及されていない。さらに、5位の硫黄原子の酸化状態がスルホキシドまたはスルホン基である場合についても言及されてはいない。
Y:化学的な単結合、-S(=O)-、-SO2-
Ra、Rb:置換基を有してもよいC1~C30有機基
Za、Zb:化学的な単結合、-SO2-
X1、X2:水素原子、ハロゲン原子、アルキル基、シアノ
基、ニトロ基、-OR1、-O-CO-R1、-CO-OR1、
-O-CO-OR1、-NR2R3、-NR2-CO-R1、-CO-NR2R3、
-O-CO-NR2R3
n、m:0~2、ただしいずれか一方は0ではない
しかしながら、10位のアミノ基上の水素原子が炭化水素基で置換された例について具体的な記載はない。さらに、例えば上記一般式の具体例として下記に示される化合物(以下CD-SO2と略称する)が挙げられるが、当該化合物はアクリル系エラストマーに対する相溶性が悪いため、オープンロール等により架橋性組成物を形成する際に分散不良を起こすことがある。
(ここで、R1は炭素数1~20の一価の脂肪族炭化水素基または炭素数7~20のアラルキル基であり、R2・Arはアラルキル基であり、そのR2は炭素数1~10の二価の脂肪族炭化水素基であり、Arは炭素数6~10の一価の芳香族炭化水素基である)で表されるフェノチアジン誘導体によって達成される。
(A) 式〔I〕で表されるフェノチアジン誘導体 0.1~5重量部
(B) カルボキシル基含有アクリルゴム用架橋剤 0.1~3重量部
(C) カルボキシル基含有アクリルゴム用架橋促進剤 0.1~5重量部
を含有してなるカルボキシル基含有アクリルゴム組成物によって達成される。
を製造した後、10位のNH基をN-アルキル化した後、5位の硫黄原子を過酸化水素/酢酸等の酸化剤により酸化することにより容易に製造することができる(A法)。また、N-アルキル化反応と酸化反応とを逆の順序の方法(B法)とすることもできる。
アルキル化剤としては、R1-X(Xは、塩素原子、臭素原子またはヨウ素原子である)で表されるアルキル化剤を用いることができる。その使用量は、化合物CD-S 1モルに対して約1~2モルの範囲である。
3,7-ビス(α,α-ジメチルベンジル)-10H-フェノチアジン〔CD-S〕の製造
マグネット攪拌子、温度計、窒素ガス導入口と排出口および還流冷却管を備えた容量1000mlの四口フラスコに、フェノチアジン 59.8g(0.3モル)、p-トルエンスルホン酸 1.44gおよびトルエン 280mlを投入し、80℃に昇温した後、α-メチルスチレン 70.9g(0.6モル)を加え、窒素ガス雰囲気下で1時間反応させた。
3,7-ビス(α,α-ジメチルベンジル)-10H-フェノチアジン-5,5-ジオキシド〔CD-SO2〕の製造
マグネット攪拌子、温度計、窒素ガス導入口と排出口および還流冷却管を備えた容量500mlの四口フラスコに、フェノチアジン 24.9g(0.125モル)、p-トルエンスルホン酸 0.6gおよびトルエン 115mlを投入し、80℃に昇温した後、α-メチルスチレン 29.5g(0.25モル)を加え、窒素ガス雰囲気下で1時間反応させた。
10-ベンジル-3,7-ビス(α,α-ジメチルベンジル)-10H-フェノチアジン-5,5-ジオキシド〔CD-SO2-Bn〕の製造
マグネット攪拌子、温度計、ガス導入口と排出口および還流冷却管を備えた容量300mlの四口フラスコに、精製CD-S 21.8g(50ミリモル)およびN,N-ジメチルホルムアミド160mlを投入し、窒素雰囲気下5℃以下に冷却した。系内の温度を10℃以下に保ちながら水素化ナトリウム 1.8g(75ミリモル)を加え1時間反応させた。ベンジルクロリド9.5g(75ミリモル)を加えた後、70℃で1時間反応させた。得られた反応混合物を室温まで冷却した後、飽和塩化ナトリウム水溶液に注いだ。生成物をジクロロメタンで抽出し、有機層を無水硫酸マグネシウムで乾燥した。硫酸マグネシウムをろ別した後、ろ液から揮発性成分を減圧留去し、僅かに黄色みをおびた固体として粗製CD-S-Bnを27.2g得た。
1H NMR(400MHz、Acetone d6、δ ppm):
1.74 (s、12H、-C(CH 3)2-)
5.56 (s、2H、N-CH 2-Ar)
7.15~7.45 (m、19H、Ar)
7.93 (d、J=2.4Hz、2H、Ar)
10-n-プロピル-3,7-ビス(α,α-ジメチルベンジル)-10H-フェノチアジン-5,5-ジオキシド〔CD-SO2-Pr〕の製造
マグネット攪拌子、温度計、ガス導入口と排出口および還流冷却管を備えた容量300mlの四口フラスコに、精製CD-S 21.8g(50ミリモル)およびN,N-ジメチルホルムアミド160mlを投入し、窒素雰囲気下5℃以下に冷却した。系内の温度を10℃以下に保ちながら水素化ナトリウム 1.8g(75ミリモル)を加え1時間反応させた。N-プロピルブロミド8.0g(65ミリモル)を加えた後、70℃で1時間反応させた。得られた反応混合物を室温まで冷却した後、飽和塩化ナトリウム水溶液に注いだ。生成物を酢酸エチルで抽出し、有機層を無水硫酸マグネシウムで乾燥した。硫酸マグネシウムをろ別した後、ろ液から揮発性成分を減圧留去し、僅かに黄色みをおびた固体として粗製CD-S-Prを24.9g得た。
内容物を室温まで冷却した後、上層のトルエン層を取出し、減圧下で揮発性物質を留去した。得られた赤色の高粘性液体をトルエン/エタノール(5/1(v/v))で再結晶し、無色の結晶としてCD-SO2-Pr を21.7g(CD-Sからの収率85%)得た。
1H NMR(400MHz、CDCl3、δ ppm):
1.01 (t, J=7.2Hz, 3H,-CH2CH2CH 3)
1.73 (s, 12H, -C(CH 3)2-)
1.89 (sectet, J=7.6Hz, 2H,
-CH2CH 2CH3)
4.03 (t, J=8.0Hz, 2H,
-CH 2CH2CH3)
7.14-7.32 (m, 14H, Ar)
8.13 (d, J=2.4Hz, 2H, Ar)
カルボキシル基含有アクリルゴム 100重量部
(ユニマテック製品ノックスタイトPA-521、Tg:-21℃)
FEFカーボンブラック(東海カーボン製品シーストGSO) 60 〃
ステアリン酸(ミヨシ油脂製品TST) 1 〃
ポリオキシエチレンステアリルエーテルリン酸 0.5 〃
(東邦化学工業製品フォスファノールRL-210)
ステアリルアミン(n-オクタデシルアミン) 1 〃
(花王ケミカル製品ファーミン80S)
架橋促進剤 1 〃
(Safic-Alcan社製品Vulcofac ACT55)
ヘキサメチレンジアミンカーバメート 0.6 〃
(ユニマテック製品ケミノックスAC6F)
CD-SO2-Bn 2 〃
以上の各成分の内、カルボキシル基含有アクリルゴム、FEFカーボンブラック、ステアリン酸およびポリオキシエチレンステアリルエーテルリン酸を、バンバリーミキサで混和した。得られた混和物に、所定量の残りの各成分をオープンロールで混和し、アクリルゴム組成物を得た。これを、100トンプレス成形機により、180℃で8分間の一次架橋および175℃で4時間のオーブン架橋を行い、厚さ約2mmのシート状架橋物および直径約29mm、高さ約12.5mmの円柱状架橋物を得た。
ムーニースコーチ試験:ISO 289-1に対応するJIS K6300-1準拠(125℃)
東洋精機製作所製ムーニービスコメータAM-3
を用い、最小ムーニー粘度(ML min)およびスコ
ーチ時間(t5)の値を測定
架橋試験:ISO 6502に対応するJIS K6300-2準拠(180℃、12分間)
東洋精機製作所製ロータレス・レオメータRLR-3使を用い、
ML、MH、tc(10)およびtc(90)の値を測定
ML:最小トルク
MH:最大トルク
tc(10):架橋トルクがML+(MH-ML)×0.1に達するまでに要する
時間
tc(90):架橋トルクがML+(MH-ML)×0.9に達するまでに要する
時間
常態物性:ISO 37に対応するJIS K6251、ISO 37に対応するJIS K6253
準拠
空気加熱老化試験:ISO 188に対応するJIS K6257準拠
(190℃:70時間、250時間、375時間、500時間)
圧縮永久歪:ISO 815-1に対応するJIS K6262準拠
(175℃:70時間、500時間)
実施例3において、CD-SO2-Bnの代りに、同量(2重量部)のCD-SO2-Prが用いられた。
実施例3において、CD-SO2-Bnの代りに、同量(2重量部)の4,4′-ビス(α,α-ジメチルベンジル)ジフェニルアミン(大内新興化学工業製品ノクラックCD)が用いられた。
実施例3において、CD-SO2-Bnの代りに、同量(2重量部)のCD-SO2が用いられた。
Claims (9)
- R2・Ar で表されるアラルキル基がα,α-ジメチルベンジル基である請求項1記載のフェノチアジン誘導体。
- カルボキシル基含有アクリルゴムの配合剤として用いられる請求項1記載のフェノチアジン誘導体。
- カルボキシル基含有アクリルゴム100重量部に対して、
(A) 請求項1記載のフェノチアジン誘導体 0.1~5重量部
(B) カルボキシル基含有アクリルゴム用架橋剤 0.1~3重量部
(C) カルボキシル基含有アクリルゴム用架橋促進剤 0.1~5重量
部
を含有してなるカルボキシル基含有アクリルゴム組成物。 - カルボキシル基含有アクリルゴム用架橋剤が多価アミン化合物またはその誘導体である請求項4記載のカルボキシル基含有アクリルゴム組成物。
- 多価アミン化合物またはその誘導体がヘキサメチレンジアミン、ヘキサメチレンジアミンカーバメート、4,4′-ジアミノジフェニルエーテルまたは2,2-ビス〔4-(4-アミノフェノキシ)フェニル〕プロパンである請求項5記載のカルボキシル基含有アクリルゴム組成物。
- カルボキシル基含有アクリルゴム用架橋促進剤がグアニジン化合物、ジアザビシクロアルケン化合物またはその有機酸塩、または脂肪族3級モノアミン化合物である請求項4記載のカルボキシル基含有アクリルゴム組成物。
- グアニジン化合物が1,3-ジフェニルグアニジンまたは1,3-ジ-o-トリルグアニジンである請求項7記載のカルボキシル基含有アクリルゴム組成物。
- ジアザビシクロアルケン化合物またはその有機酸塩が1,8-ジアザビシクロ〔5.4.0〕-7-ウンデセンまたはその有機酸塩である請求項7記載のカルボキシル基含有アクリルゴム組成物。
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US20230323086A1 (en) | 2023-10-12 |
EP4209487A1 (en) | 2023-07-12 |
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