WO2023282115A1 - オルガノポリシロキサン及びその製造方法 - Google Patents
オルガノポリシロキサン及びその製造方法 Download PDFInfo
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- WO2023282115A1 WO2023282115A1 PCT/JP2022/025641 JP2022025641W WO2023282115A1 WO 2023282115 A1 WO2023282115 A1 WO 2023282115A1 JP 2022025641 W JP2022025641 W JP 2022025641W WO 2023282115 A1 WO2023282115 A1 WO 2023282115A1
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- carbon atoms
- organopolysiloxane
- meth
- formula
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- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- -1 diphenylsiloxy units Chemical group 0.000 claims abstract description 76
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000004432 carbon atom Chemical group C* 0.000 claims description 50
- 125000000217 alkyl group Chemical group 0.000 claims description 26
- 239000003054 catalyst Substances 0.000 claims description 21
- 125000003342 alkenyl group Chemical group 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 16
- 239000007848 Bronsted acid Substances 0.000 claims description 15
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 14
- 125000003545 alkoxy group Chemical group 0.000 claims description 10
- 125000005843 halogen group Chemical group 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims description 8
- 125000005375 organosiloxane group Chemical group 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 claims description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 239000012299 nitrogen atmosphere Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 7
- VSIKJPJINIDELZ-UHFFFAOYSA-N 2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound O1[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si]1(C=1C=CC=CC=1)C1=CC=CC=C1 VSIKJPJINIDELZ-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- 239000012043 crude product Substances 0.000 description 5
- 238000011085 pressure filtration Methods 0.000 description 5
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 125000000753 cycloalkyl group Chemical group 0.000 description 4
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 4
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 4
- BITPLIXHRASDQB-UHFFFAOYSA-N ethenyl-[ethenyl(dimethyl)silyl]oxy-dimethylsilane Chemical compound C=C[Si](C)(C)O[Si](C)(C)C=C BITPLIXHRASDQB-UHFFFAOYSA-N 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- VCYDUTCMKSROID-UHFFFAOYSA-N 2,2,4,4,6,6-hexakis-phenyl-1,3,5,2,4,6-trioxatrisilinane Chemical compound O1[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si]1(C=1C=CC=CC=1)C1=CC=CC=C1 VCYDUTCMKSROID-UHFFFAOYSA-N 0.000 description 3
- OGDLFRPDSKIBRZ-UHFFFAOYSA-N 2,2,4,4-tetramethyl-6,6-diphenyl-1,3,5,2,4,6-trioxatrisilinane Chemical compound O1[Si](C)(C)O[Si](C)(C)O[Si]1(C=1C=CC=CC=1)C1=CC=CC=C1 OGDLFRPDSKIBRZ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 150000001923 cyclic compounds Chemical class 0.000 description 3
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 3
- SZIFAVKTNFCBPC-UHFFFAOYSA-N 2-chloroethanol Chemical compound OCCCl SZIFAVKTNFCBPC-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 150000001639 boron compounds Chemical class 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- KWEKXPWNFQBJAY-UHFFFAOYSA-N (dimethyl-$l^{3}-silanyl)oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)C KWEKXPWNFQBJAY-UHFFFAOYSA-N 0.000 description 1
- BOIFXPDTOHPTOD-UHFFFAOYSA-N 2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound O1[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si]1(C=1C=CC=CC=1)C1=CC=CC=C1 BOIFXPDTOHPTOD-UHFFFAOYSA-N 0.000 description 1
- UNPFADACPKMIHX-UHFFFAOYSA-N 2,2-diphenyl-1,3,5,2,4,6-trioxatrisilinane Chemical compound C1(=CC=CC=C1)[Si]1(O[SiH2]O[SiH2]O1)C1=CC=CC=C1 UNPFADACPKMIHX-UHFFFAOYSA-N 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- JOQIXYHRBTZINZ-UHFFFAOYSA-N [[dimethyl(prop-2-enoyloxymethyl)silyl]oxy-dimethylsilyl]methyl prop-2-enoate Chemical compound C=CC(=O)OC[Si](C)(C)O[Si](C)(C)COC(=O)C=C JOQIXYHRBTZINZ-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- JJRDHFIVAPVZJN-UHFFFAOYSA-N cyclotrisiloxane Chemical compound O1[SiH2]O[SiH2]O[SiH2]1 JJRDHFIVAPVZJN-UHFFFAOYSA-N 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
Definitions
- the present invention relates to an organopolysiloxane and a method for producing the same, and more particularly to an organopolysiloxane containing diphenylsiloxy units and a method for producing the same.
- Patent Document 1 a method for producing sequence-controlled organopolysiloxane, a ring-opening polymerization method using a guanidine base as a catalyst has been reported.
- a ring-opening polymerization method a block copolymer of organosiloxane is obtained, but since the block structure contains a sequence of continuous diphenylsiloxy units, a side reaction during polymerization may generate a phenyl cyclic compound that is difficult to distill off. have a nature.
- Patent Documents 2 and 3 A method using a Lewis acidic boron compound as a catalyst has also been reported (Patent Documents 2 and 3). In this method using a Lewis acidic boron compound as a catalyst, an organopolysiloxane with a strictly controlled sequence can be obtained according to the order in which the reagents are added. , there was a problem in terms of safety.
- An object of the present invention is to provide an organopolysiloxane in which the arrangement of diphenylsiloxy units in the siloxane arrangement is controlled to reduce the proportion of continuous arrangement of diphenylsiloxy unit-containing siloxanes, and a method for producing the same.
- an organopolysiloxane in which the proportion of continuous sequences of diphenylsiloxy unit-containing siloxanes is kept low by equilibrium copolymerization using a Bronsted acid catalyst. can be synthesized, and completed the present invention.
- the present invention provides the following organopolysiloxane and a method for producing the same.
- each R 1 is independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, ) a group selected from an acryloxypropyl group and a (meth)acryloxymethyl group, Ph represents a phenyl group, a is a number of 2 or more, b is a number of 2 or more, c is a number of 1 or more, and 5 ⁇ a+b+c ⁇ 500.) wherein the content of low-molecular-weight siloxane having a weight-average molecular weight of 700 or less is 10% by mass or less, and the ratio of sequences in which diphenylsiloxy units are continuous to all diphenylsiloxy units is 5 mol% or less.
- each R 2 is independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, ) A group selected from an acryloxypropyl group and a (meth)acryloxymethyl group.
- Organosiloxane represented by (B) the following general formula (3) (In formula (3), each R 3 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a phenyl group, a (meth)acryloxypropyl group and a (meth)acryloxypropyl group.
- a group selected from an acryloxymethyl group, and d is 3 or 4.
- At least 75 mol% of the cyclic siloxane of (B) is a cyclic siloxane represented by the following general formula (4).
- each R 4 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a (meth)acryloxypropyl group and (meth)acryloxymethyl is a group selected from groups, Ph represents a phenyl group, and d is the same as above.
- a method for producing an organopolysiloxane comprising the step of reacting the cyclic siloxane represented by (C) in the presence of a Bronsted acid catalyst.
- ⁇ 3> The method for producing an organopolysiloxane according to ⁇ 2>, wherein the Bronsted acid catalyst is selected from sulfuric acid, trifluoromethanesulfonic acid, and bis(trifluoromethanesulfonyl)imide.
- the Bronsted acid catalyst is selected from sulfuric acid, trifluoromethanesulfonic acid, and bis(trifluoromethanesulfonyl)imide.
- (A) the organosiloxane represented by the general formula (2) and (B) the cyclic siloxane represented by the general formula (3) are reacted in the presence of (C) a Bronsted acid catalyst at a reaction temperature of 6 C. or more and 30.degree. C. or less, the method for producing an organopolysiloxane according to ⁇ 2> or ⁇ 3>.
- the production method of the present invention it is possible to produce an organopolysiloxane in which the proportion of continuous sequences of siloxanes containing diphenylsiloxy units is kept low.
- cyclic compounds with continuous diphenylsiloxy units such as hexaphenylcyclotrisiloxane and octaphenylcyclotetrasiloxane are hardly produced, purification is facilitated.
- the organopolysiloxane of the present invention is advantageous for silicone oils, silicone rubbers and the like used in electronic devices, electric machines, automobiles, cosmetics and the like.
- each R 1 is independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, ) a group selected from an acryloxypropyl group and a (meth)acryloxymethyl group, Ph represents a phenyl group, a is a number of 2 or more, b is a number of 2 or more, c is a number of 1 or more, and 5 ⁇ a+b+c ⁇ 500.)
- R 1 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, (meth)acryloxypropyl and (meth)acryloxymethyl groups.
- Halogen atoms include fluorine, chlorine, bromine, and iodine atoms.
- alkyl groups having 1 to 10 carbon atoms include alkyl groups such as methyl group, ethyl group, propyl group and butyl group; cycloalkyl groups such as cyclopentyl group and cyclohexyl group; and the like.
- alkenyl groups having 2 to 10 carbon atoms include vinyl groups and allyl groups.
- alkoxy groups having 1 to 4 carbon atoms include methoxy, ethoxy, propoxy and butoxy groups.
- a is 2 or more, preferably a number of 2 to 12
- b is 2 or more, preferably 2 to 498, more preferably a number of 4 to 250
- c is 1 or more, preferably 1 to 100 is 5 ⁇ a+b+c ⁇ 500, preferably 5 ⁇ a+b+c ⁇ 250. If a+b+c is more than 500, the viscosity increases and workability may deteriorate.
- the viscosity of the organopolysiloxane of the present invention is preferably 10 mm 2 /s to 20,000 mm 2 /s, more preferably 50 mm 2 /s to 10,000 mm 2 /s, and 100 mm 2 /s to 5,000 mm 2 /s. is most preferred.
- the viscosity is a value measured at 25° C. using a Canon-Fenske viscometer according to JIS Z 8803:2011.
- the content of low-molecular-weight siloxane having a weight-average molecular weight of 700 or less in the organopolysiloxane represented by formula (1) is 10% by mass or less, preferably 7% by mass or less, and more preferably 5% by mass or less.
- the weight average molecular weight is a value obtained by GPC (gel permeation chromatography) analysis using polystyrene as a standard material under the following conditions.
- the ratio of the arrangement of consecutive diphenylsiloxy units to the entire diphenylsiloxy units of formula (1) is 5 mol % or less, preferably 3 mol % or less, more preferably 1 mol % or less. If it exceeds 5 mol %, a cyclic compound such as hexaphenylcyclotrisiloxane or octaphenylcyclotetrasiloxane having consecutive diphenylsiloxy units may be produced as a by-product.
- the proportion of sequences in which diphenylsiloxy units are continuous means that the integrated area of the peak derived from the diphenylsiloxy unit having a diphenylsiloxy group at the adjacent position in 29 Si-NMR is the integrated area of the peak derived from the diphenylsiloxy unit. It is a value obtained as a value divided by .
- the siloxane of the above formula (1) is a trimethylsiloxy group-blocked dimethylsiloxane/diphenylsiloxane copolymer M 2 D m D 2 ⁇ n (D represents a dimethylsiloxy unit, D 2 ⁇ is a diphenylsiloxy unit, and m and n are numbers of 1 or more), when 29 Si-NMR is measured, a peak 1 derived from the M unit having D 2 ⁇ adjacent to the position is detected near 10 ppm, and a peak 1 derived from the M unit is detected near 8 ppm.
- a peak 2 derived from the M unit is detected in which the adjacent position is D, a peak 3 derived from the D unit is detected in the vicinity of -20 to -22 ppm, and the adjacent position is M or D 2 ⁇ in the vicinity of -47 ppm.
- a peak 4 derived from the 2 ⁇ unit is detected, and a peak 5 derived from the D 2 ⁇ unit having D adjacent to -48 ppm is detected.
- the integrated areas of peak 1, peak 4, and peak 5 are x, y, and z, respectively, the integrated areas of the peaks derived from diphenylsiloxy units whose adjacent positions are diphenylsiloxy groups are (yx), diphenyl
- the integrated area of peaks derived from siloxy units is represented by (y+z). Therefore, the ratio p of sequences in which diphenylsiloxy units are continuous can be obtained from the following formula.
- the method for producing an organopolysiloxane of the present invention comprises (A) an organosiloxane represented by the following general formula (2) and (B) the following general formula
- the method is characterized by comprising a step of reacting the cyclic siloxane represented by (3) in the presence of (C) a Bronsted acid catalyst.
- each R 2 is independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, ) A group selected from an acryloxypropyl group and a (meth)acryloxymethyl group.
- each R 3 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a phenyl group, a (meth)acryloxypropyl group and a (meth)acryloxypropyl group.
- each R 4 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a (meth)acryloxypropyl group and (meth)acryloxymethyl is a group selected from groups, Ph represents a phenyl group, and d is the same as above.
- R 2 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a phenyl group, an alkoxy group having 1 to 4 carbon atoms, (meth) It is selected from acryloxypropyl and (meth)acryloxymethyl groups.
- Halogen atoms include fluorine, chlorine, bromine, and iodine atoms.
- alkyl groups having 1 to 10 carbon atoms include alkyl groups such as methyl group, ethyl group, propyl group and butyl group; cycloalkyl groups such as cyclopentyl group and cyclohexyl group; and the like.
- alkenyl groups having 2 to 10 carbon atoms include vinyl groups and allyl groups.
- alkoxy groups having 1 to 4 carbon atoms include methoxy, ethoxy, propoxy and butoxy groups.
- R 3 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a phenyl group, a (meth)acryloxypropyl group and a (meth)acryloxymethyl group.
- alkyl groups having 1 to 10 carbon atoms include alkyl groups such as methyl group, ethyl group, propyl group and butyl group; cycloalkyl groups such as cyclopentyl group and cyclohexyl group; and the like.
- alkenyl groups having 2 to 10 carbon atoms include vinyl groups and allyl groups. Among them, an alkyl group and a phenyl group are preferable, and a methyl group and a phenyl group are particularly preferable.
- R 4 is selected from a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a (meth)acryloxypropyl group and a (meth)acryloxymethyl group.
- alkyl groups having 1 to 10 carbon atoms include alkyl groups such as methyl group, ethyl group, propyl group and butyl group; and cycloalkyl groups such as cyclopentyl group and cyclohexyl group.
- alkenyl groups having 2 to 10 carbon atoms include vinyl groups and allyl groups. Among them, an alkyl group is preferred, and a methyl group is particularly preferred.
- a Bronsted acid catalyst refers to a compound (catalyst) capable of producing a Bronsted acid in a reaction system.
- Sulfuric acid, trifluoromethanesulfonic acid, bis(trifluoromethanesulfonyl)imide and the like can be mentioned as Bronsted acid catalysts used in the production method of the present invention.
- trifluoromethanesulfonic acid is most preferred.
- the molar ratio of the compound of formula (3) (including formula (4)) to the compound of formula (2) is preferably 1 to 166 times, more preferably 1 to 83 times.
- the content of the compound of formula (4) in the compound of formula (3) is preferably 75-100 mol %, more preferably 90-100 mol %. If the content of the compound (4) is less than 75 mol %, the effect of improving the intermolecular force due to sequence control is reduced, and heat resistance may not be exhibited.
- the amount (mass) of the Bronsted acid catalyst used is not particularly limited, and is appropriately selected according to the purpose. is preferably 100 to 50,000 ppm, more preferably 250 to 25,000 ppm, and most preferably 500 to 10,000 ppm, based on the total amount (total mass) of cyclic siloxane used. Within the above range, the reaction can proceed efficiently.
- (A) an organosiloxane represented by the general formula (2) and (B) a cyclic siloxane represented by the general formula (3) are reacted in the presence of (C) a Bronsted acid catalyst.
- the reaction temperature in the step of causing the reaction is preferably 6° C. or higher and 30° C. or lower, more preferably 15° C. or higher and 25° C. or lower, and most preferably 20° C. or higher and 25° C. or lower. If the reaction temperature exceeds 30°C, undesirable side reactions such as elimination of phenyl groups may proceed.
- reaction conditions such as reaction time and solvent to be used are not particularly limited.
- the reaction time is preferably 1 to 60 hours, more preferably 2 to 48 hours, and most preferably 4 to 24 hours.
- a solvent may or may not be used, but when used, saturated hydrocarbons such as octane and decane are preferred.
- the production method of the present invention may include (C) a step of filtering the resulting precipitate after the reaction in the presence of the Bronsted acid catalyst is completed.
- a known method can be used for the step of filtering off the precipitate.
- the weight average molecular weight and number average molecular weight described in the examples are values obtained by GPC (gel permeation chromatography) analysis using polystyrene as a standard substance under the following conditions. Also, the low-molecular-weight siloxane content was calculated from a value obtained by dividing the peak area with a weight-average molecular weight of 700 or less by the total sum of all peak areas.
- the viscosity is a value measured at 25°C using a Canon-Fenske viscometer according to JIS Z 8803:2011.
- the refractive index (nD) is a measured value at 25° C. using an Abbe refractometer described in JIS K 0062:1992.
- Example 1 21.7 g of hexamethyldisiloxane, 278.3 g of 2,2,4,4-tetramethyl-6,6-diphenylcyclotrisiloxane, trifluoro
- 0.6 g of romethanesulfonic acid After charging 0.6 g of romethanesulfonic acid, the reaction was carried out at 20° C. for 4 hours under a nitrogen atmosphere.
- 3.6 g of Kyoward 500SH manufactured by Kyowa Kagaku Kogyo Co., Ltd.
- the resulting crude product was distilled off under reduced pressure at an internal temperature of 160° C.
- Viscosity 410 mm 2 /s, Refractive index: 1.5074, Number average molecular weight: 2,400, Weight average molecular weight: 3,430, Low-molecular-weight siloxane content: 4% by mass, Percentage of sequence of continuous diphenylsiloxy units: 1 .3 mol %.
- Example 2 24.7 g of 1,3-divinyltetramethyldisiloxane and 2,2,4,4-tetramethyl-6,6-diphenylcyclotrisiloxane were placed in a separable flask equipped with a thermometer, stirrer and nitrogen gas inlet tube. After charging 275.3 g and 0.6 g of trifluoromethanesulfonic acid, the reaction was carried out at 20° C. for 4 hours under a nitrogen atmosphere. Then, 3.6 g of Kyoward 500SH (manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, and the mixture was stirred at 20° C. for 2 hours, and the white precipitate was separated by pressure filtration.
- Kyoward 500SH manufactured by Kyowa Kagaku Kogyo Co., Ltd.
- the resulting crude product was distilled off under reduced pressure at an internal temperature of 160° C. and 3 mmHg to obtain a colorless transparent liquid having the following physical properties. Viscosity: 380 mm 2 /s, Refractive index: 1.5094, Number average molecular weight: 2,100, Weight average molecular weight: 3,360, Low-molecular-weight siloxane content: 4% by mass, Percentage of sequence of continuous diphenylsiloxy units: 0 .4 mol %.
- Example 3 18.2 g of 1,1,3,3-tetramethyldisiloxane and 2,2,4,4-tetramethyl-6,6-diphenyl were placed in a separable flask equipped with a thermometer, stirrer and nitrogen gas inlet tube. After charging 281.8 g of cyclotrisiloxane and 0.6 g of trifluoromethanesulfonic acid, the reaction was carried out at 20° C. for 4 hours in a nitrogen atmosphere. Then, 3.6 g of Kyoward 500SH (manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, and the mixture was stirred at 20° C. for 2 hours, and the white precipitate was separated by pressure filtration.
- Kyoward 500SH manufactured by Kyowa Kagaku Kogyo Co., Ltd.
- the resulting crude product was distilled off under reduced pressure at an internal temperature of 160° C. and 3 mmHg to obtain a colorless transparent liquid having the following physical properties. Viscosity: 320 mm 2 /s, Refractive index: 1.5084, Number average molecular weight: 2,030, Weight average molecular weight: 3,200, Low-molecular-weight siloxane content: 6% by mass, Percentage of sequence of continuous diphenylsiloxy units: 0 .4 mol %.
- Example 4 38.1 g of 1,3-bis(acryloxymethyl)tetramethyldisiloxane and 2,2,4,4-tetramethyl-6,6 were placed in a separable flask equipped with a thermometer, stirrer and nitrogen gas inlet tube. After charging 261.9 g of diphenylcyclotrisiloxane and 0.6 g of trifluoromethanesulfonic acid, the reaction was carried out at 20° C. for 4 hours in a nitrogen atmosphere. Then, 3.6 g of Kyoward 500SH (manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, and the mixture was stirred at 20° C.
- Kyoward 500SH manufactured by Kyowa Kagaku Kogyo Co., Ltd.
- Example 5 1.8 g of hexamethyldisiloxane and 28.2 g of 2,2,4,4,6,6-hexamethyl-8,8-diphenylcyclotetrasiloxane were placed in a separable flask equipped with a thermometer, stirrer and nitrogen gas inlet tube. , and 0.3 g of trifluoromethanesulfonic acid were charged, and the reaction was carried out at 20° C. for 4 hours in a nitrogen atmosphere. Then, 1.8 g of Kyoward 500SH (manufactured by Kyowa Kagaku Kogyo Co., Ltd.) was added, and the mixture was stirred at 20° C.
- Kyoward 500SH manufactured by Kyowa Kagaku Kogyo Co., Ltd.
- potassium siliconate manufactured by Shin-Etsu Chemical Co., Ltd.
- potassium siliconate manufactured by Shin-Etsu Chemical Co., Ltd.
- Viscosity 9,630 mm 2 /s, Refractive index: 1.5015, Number average molecular weight: 11,730, Weight average molecular weight: 20,640, Low-molecular-weight siloxane content: 27% by mass, Percentage of sequences in which diphenylsiloxy units are continuous was 49 mol %.
- Heat resistance test A heat resistance test was carried out on the organopolysiloxane obtained in Example 1 and having a ratio of 1.3 mol % of a sequence of continuous diphenylsiloxy units and having trimethylsilyl groups blocked at both ends.
- KF-54 manufactured by Shin-Etsu Chemical Co., Ltd.
- the weight loss rate was calculated to be 25% for KF-54 and 20% for the organopolysiloxane of Example 1.
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Abstract
Description
また、ルイス酸性ホウ素化合物を触媒として利用する方法(特許文献2、特許文献3)も報告されている。このルイス酸性ホウ素化合物を触媒として利用する方法では、試薬の投入順序に応じて、配列が厳密に制御されたオルガノポリシロキサンが得られるが、原料のジヒドロシランが低沸点、低引火点であるため、安全性の点で問題があった。
下記平均組成式(1)で示されるオルガノポリシロキサン
であって、重量平均分子量700以下の低分子シロキサンの含有率が10質量%以下であり、かつ、ジフェニルシロキシ単位全体における、ジフェニルシロキシ単位が連続した配列の割合が5mol%以下であることを特徴とするオルガノポリシロキサン。
<2>
<1>に記載のオルガノポリシロキサンの製造方法であって、
(A)下記一般式(2)
で表されるオルガノシロキサンと、
(B)下記一般式(3)
で示される環状シロキサンとを
(C)ブレンステッド酸触媒の存在下で反応させる工程を有することを特徴とするオルガノポリシロキサンの製造方法。
<3>
ブレンステッド酸触媒が、硫酸、トリフルオロメタンスルホン酸、及びビス(トリフルオロメタンスルホニル)イミドから選択される、<2>に記載のオルガノポリシロキサンの製造方法。
<4>
(A)一般式(2)で表されるオルガノシロキサンと、(B)一般式(3)で示される環状シロキサンとを(C)ブレンステッド酸触媒の存在下で反応させる工程における反応温度が6℃以上30℃以下であることを特徴とする、<2>または<3>に記載のオルガノポリシロキサンの製造方法。
本発明のオルガノポリシロキサンは、下記平均組成式(1)で示されるものである。
本明細書において、粘度は、JIS Z 8803:2011記載のキャノン-フェンスケ粘度計を用いて測定した25℃における測定値である。
なお、本明細書において、重量平均分子量は、下記条件によるポリスチレンを標準物質としたGPC(ゲルパーミエーションクロマトグラフィー)分析による値である。
展開溶媒:テトラヒドロフラン(THF)
流速:0.6mL/min
検出器:示差屈折率検出器(RI)
カラム:TSK Guardcolumn SuperH-H
TSKgel SuperHM-N(6.0mmI.D.×15cm×1)
TSKgel SuperH2500(6.0mmI.D.×15cm×1)
(いずれも東ソー社製)
カラム温度:40℃
試料注入量:50μL(濃度0.3質量%のTHF溶液)
ここで、ジフェニルシロキシ単位が連続した配列の割合とは、29Si-NMRにおける、隣接位がジフェニルシロキシ基であるジフェニルシロキシ単位に由来するピークの積分面積を、ジフェニルシロキシ単位由来のピークの積分面積で割った値として求めた値である。
ここで、ピーク1、ピーク4及びピーク5の積分面積をそれぞれx、y、zとすると、隣接位がジフェニルシロキシ基であるジフェニルシロキシ単位に由来するピークの積分面積は(y-x)、ジフェニルシロキシ単位由来のピークの積分面積は(y+z)で表される。したがって、ジフェニルシロキシ単位が連続した配列の割合pは下記式から求められる。
本発明のオルガノポリシロキサンの製造方法(以下、「本発明の製造方法」と略す場合がある。)は、(A)下記一般式(2)で示されるオルガノシロキサンと、(B)下記一般式(3)で示される環状シロキサンとを(C)ブレンステッド酸触媒の存在下で反応させる工程を有することを特徴とする。
本発明の製造方法で使用されるブレンステッド酸触媒としては、硫酸、トリフルオロメタンスルホン酸、及びビス(トリフルオロメタンスルホニル)イミド等が挙げられる。これらのブレンステッド酸触媒の中でも、トリフルオロメタンスルホン酸が最も好ましい。
また、低分子シロキサン含有率は、重量平均分子量700以下のピーク面積を、全てのピーク面積の総和で割った値から算出した。
展開溶媒:テトラヒドロフラン(THF)
流量:0.6mL/min
検出器:示差屈折率検出器(RI)
カラム:TSK Guardcolumn SuperH-H
TSKgel SuperHM-N(6.0mmI.D.×15cm×1)
TSKgel SuperH2500(6.0mmI.D.×15cm×1)
(いずれも東ソー社製)
カラム温度:40℃
試料注入量:50μL(濃度0.3質量%のTHF溶液)
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、ヘキサメチルジシロキサン21.7g、2,2,4,4-テトラメチル-6,6-ジフェニルシクロトリシロキサン278.3g、トリフルオロメタンスルホン酸0.6gを仕込んだ後、窒素雰囲気下、20℃で4時間反応を行った。その後、キョーワード500SH(協和化学工業社製)3.6gを加えて、20℃で2時間撹拌を行い、白色沈殿物を加圧濾過によって濾別した。得られた粗生成物を内温160℃、3mmHgで減圧留去することで下記物性を有する無色透明液体を得た。
粘度:410mm2/s、屈折率:1.5074、数平均分子量:2,400、重量平均分子量:3,430、低分子シロキサン含有率4質量%、ジフェニルシロキシ単位が連続した配列の割合:1.3mol%。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、1,3-ジビニルテトラメチルジシロキサン24.7g、2,2,4,4-テトラメチル-6,6-ジフェニルシクロトリシロキサン275.3g、トリフルオロメタンスルホン酸0.6gを仕込んだ後、窒素雰囲気下、20℃で4時間反応を行った。その後、キョーワード500SH(協和化学工業社製)3.6gを加えて、20℃で2時間撹拌を行い、白色沈殿物を加圧濾過によって濾別した。得られた粗生成物を内温160℃、3mmHgで減圧留去することで下記物性を有する無色透明液体を得た。
粘度:380mm2/s、屈折率:1.5094、数平均分子量:2,100、重量平均分子量:3,360、低分子シロキサン含有率4質量%、ジフェニルシロキシ単位が連続した配列の割合:0.4mol%。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、1,1,3,3-テトラメチルジシロキサン18.2g、2,2,4,4-テトラメチル-6,6-ジフェニルシクロトリシロキサン281.8g、トリフルオロメタンスルホン酸0.6gを仕込んだ後、窒素雰囲気下、20℃で4時間反応を行った。その後、キョーワード500SH(協和化学工業社製)3.6gを加えて、20℃で2時間撹拌を行い、白色沈殿物を加圧濾過によって濾別した。得られた粗生成物を内温160℃、3mmHgで減圧留去することで下記物性を有する無色透明液体を得た。
粘度:320mm2/s、屈折率:1.5084、数平均分子量:2,030、重量平均分子量:3,200、低分子シロキサン含有率6質量%、ジフェニルシロキシ単位が連続した配列の割合:0.4mol%。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、1,3-ビス(アクリロキシメチル)テトラメチルジシロキサン38.1g、2,2,4,4-テトラメチル-6,6-ジフェニルシクロトリシロキサン261.9g、トリフルオロメタンスルホン酸0.6gを仕込んだ後、窒素雰囲気下、20℃で4時間反応を行った。その後、キョーワード500SH(協和化学工業社製)3.6gを加えて、20℃で2時間撹拌を行い、白色沈殿物を加圧濾過によって濾別した。得られた粗生成物を内温160℃、3mmHgで減圧留去することで下記物性を有する無色透明液体を得た。
粘度:340mm2/s、屈折率:1.5094、数平均分子量:2,000、重量平均分子量:3,150、低分子シロキサン含有率7質量%、ジフェニルシロキシ単位が連続した配列の割合:2.1mol%。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、ヘキサメチルジシロキサン1.8g、2,2,4,4,6,6-ヘキサメチルー8,8-ジフェニルシクロテトラシロキサン28.2g、トリフルオロメタンスルホン酸0.3gを仕込んだ後、窒素雰囲気下、20℃で4時間反応を行った。その後、キョーワード500SH(協和化学工業社製)1.8gを加えて、20℃で2時間撹拌を行い、白色沈殿物を加圧濾過によって濾別した。得られた粗生成物を内温190℃、3mmHgで減圧留去することで下記物性を有する無色透明液体を得た。
粘度:300mm2/s、屈折率:1.4897、数平均分子量:3,310、重量平均分子量:5,360、低分子シロキサン含有率9質量%、ジフェニルシロキシ単位が連続した配列の割合:0.7mol%。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、1,3-ジビニルテトラメチルジシロキサン24.7g、オクタメチルシクロテトラシロキサン117.8g、オクタフェニルシクロテトラシロキサン157.5g、トリフルオロメタンスルホン酸0.6gを仕込んだ後、窒素雰囲気下、20℃で4時間反応を行ったが、オクタフェニルシクロテトラシロキサンの開環重合が進行しなかった。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、1,3-ジビニルテトラメチルジシロキサン24.7g、オクタメチルシクロテトラシロキサン117.8g、オクタフェニルシクロテトラシロキサン157.5g、水酸化カリウムを3質量%含有するカリウムシリコネート(信越化学工業社製)2.0gを仕込んだ後、窒素雰囲気下、130℃で4時間反応を行った。その後、2-クロロエタノールで中和し、低沸点成分を留去することで下記物性を有する無色透明液体を得た。
粘度:340mm2/s、屈折率:1.5010、数平均分子量:2,690、重量平均分子量:3,850、低分子シロキサン含有率23質量%、ジフェニルシロキシ単位が連続した配列の割合は50mol%であった。
温度計、撹拌装置及び窒素ガス導入管を備えたセパラブルフラスコに、1,3-ジビニルテトラメチルジシロキサン24.7g、2,2,4,4-テトラメチル-6,6-ジフェニルシクロトリシロキサン275.3g、水酸化カリウムを3質量%含有するカリウムシリコネート(信越化学工業社製)2.0gを仕込んだ後、窒素雰囲気下、130℃で4時間反応を行った。その後、2-クロロエタノールで中和し、低沸点成分を留去することで無色透明液体を得た。
粘度:9,630mm2/s、屈折率:1.5015、数平均分子量:11,730、重量平均分子量:20,640、低分子シロキサン含有率27質量%、ジフェニルシロキシ単位が連続した配列の割合は49mol%であった。
実施例1で得られた、ジフェニルシロキシ単位が連続した配列の割合が1.3mol%の、両末端トリメチルシリル基封鎖型オルガノポリシロキサンの耐熱性試験を実施した。比較対象は、実施例1と同様のシロキサン組成で、ジフェニルシロキシ単位が連続した配列の割合が40~50mol%の、KF-54(信越化学工業社製)を使用した。空気雰囲気下、300℃で12時間加熱したのちの重量減量率を算出したところ、KF-54は25%であったのに対し、実施例1のオルガノポリシロキサンは20%であった。
Claims (4)
- 下記平均組成式(1)で示されるオルガノポリシロキサン
であって、重量平均分子量700以下の低分子シロキサンの含有率が10質量%以下であり、かつ、ジフェニルシロキシ単位全体における、ジフェニルシロキシ単位が連続した配列の割合が5mol%以下であることを特徴とするオルガノポリシロキサン。 - 請求項1に記載のオルガノポリシロキサンの製造方法であって、
(A)下記一般式(2)
で表されるオルガノシロキサンと、
(B)下記一般式(3)
で示される環状シロキサンとを
(C)ブレンステッド酸触媒の存在下で反応させる工程を有することを特徴とするオルガノポリシロキサンの製造方法。 - ブレンステッド酸触媒が、硫酸、トリフルオロメタンスルホン酸、及びビス(トリフルオロメタンスルホニル)イミドから選択される、請求項2に記載のオルガノポリシロキサンの製造方法。
- (A)一般式(2)で表されるオルガノシロキサンと、(B)一般式(3)で示される環状シロキサンとを(C)ブレンステッド酸触媒の存在下で反応させる工程における反応温度が6℃以上30℃以下であることを特徴とする、請求項2または3に記載のオルガノポリシロキサンの製造方法。
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JPS58179232A (ja) * | 1973-10-11 | 1983-10-20 | ゼネラル・エレクトリツク・カンパニイ | 線状ポリシロキサンの製法 |
JPH08183859A (ja) * | 1994-12-28 | 1996-07-16 | Shin Etsu Chem Co Ltd | オルガノポリシロキサンの製造方法 |
JP2016531183A (ja) * | 2013-08-23 | 2016-10-06 | モーメンティブ・パフォーマンス・マテリアルズ・インク | シロキサン合成用触媒 |
WO2018051792A1 (ja) | 2016-09-14 | 2018-03-22 | 国立研究開発法人産業技術総合研究所 | ポリシロキサン構造含有化合物の製造方法及び高分子組成物 |
WO2018159756A1 (ja) | 2017-03-02 | 2018-09-07 | 国立研究開発法人産業技術総合研究所 | 配列制御オリゴシロキサン、それらの製造方法及びオリゴシロキサン合成機 |
JP2020012007A (ja) | 2016-03-09 | 2020-01-23 | 国立研究開発法人産業技術総合研究所 | オリゴシロキサン、及びシリルアセタールからのオリゴシロキサンの製造方法 |
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2021
- 2021-07-09 JP JP2021113895A patent/JP7486907B2/ja active Active
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2022
- 2022-06-28 CN CN202280048329.8A patent/CN117616068A/zh active Pending
- 2022-06-28 WO PCT/JP2022/025641 patent/WO2023282115A1/ja active Application Filing
- 2022-06-28 EP EP22837531.7A patent/EP4368658A1/en active Pending
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JPS58179232A (ja) * | 1973-10-11 | 1983-10-20 | ゼネラル・エレクトリツク・カンパニイ | 線状ポリシロキサンの製法 |
JPH08183859A (ja) * | 1994-12-28 | 1996-07-16 | Shin Etsu Chem Co Ltd | オルガノポリシロキサンの製造方法 |
JP2016531183A (ja) * | 2013-08-23 | 2016-10-06 | モーメンティブ・パフォーマンス・マテリアルズ・インク | シロキサン合成用触媒 |
JP2020012007A (ja) | 2016-03-09 | 2020-01-23 | 国立研究開発法人産業技術総合研究所 | オリゴシロキサン、及びシリルアセタールからのオリゴシロキサンの製造方法 |
WO2018051792A1 (ja) | 2016-09-14 | 2018-03-22 | 国立研究開発法人産業技術総合研究所 | ポリシロキサン構造含有化合物の製造方法及び高分子組成物 |
WO2018159756A1 (ja) | 2017-03-02 | 2018-09-07 | 国立研究開発法人産業技術総合研究所 | 配列制御オリゴシロキサン、それらの製造方法及びオリゴシロキサン合成機 |
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Title |
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KAZMIERSKI, KRZYSZTOF : "Cationic Ring Opening Polymerization of Cyclotrisiloxanes with Mixed Siloxane Units. ", POLYMER PREPRINTS, 1 January 1998 (1998-01-01), US , pages 439 - 440, XP009542459, ISSN: 0032-3934 * |
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JP7486907B2 (ja) | 2024-05-20 |
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