WO2014157682A1 - ポリオルガノシロキサン及びポリカーボネート-ポリオルガノシロキサン共重合体 - Google Patents
ポリオルガノシロキサン及びポリカーボネート-ポリオルガノシロキサン共重合体 Download PDFInfo
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- WO2014157682A1 WO2014157682A1 PCT/JP2014/059323 JP2014059323W WO2014157682A1 WO 2014157682 A1 WO2014157682 A1 WO 2014157682A1 JP 2014059323 W JP2014059323 W JP 2014059323W WO 2014157682 A1 WO2014157682 A1 WO 2014157682A1
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- 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
- C08G77/32—Post-polymerisation treatment
- C08G77/34—Purification
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- 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
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/18—Block or graft polymers
- C08G64/186—Block or graft polymers containing polysiloxane sequences
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- 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
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- 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
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
- C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
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- 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
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Definitions
- the present invention relates to a polyorganosiloxane used as a raw material for a polycarbonate-polyorganosiloxane copolymer, and a polycarbonate-polyorganosiloxane copolymer obtained using the same.
- Polycarbonate is excellent in mechanical properties such as transparency and impact resistance, and is widely used industrially including the automobile field, OA field, and electric / electronic field.
- a homopolycarbonate using 2,2-bis (4-hydroxyphenyl) propane (common name: bisphenol A) as a dihydric phenol as a raw material is generally used.
- a polycarbonate-polyorganosiloxane copolymer using polyorganosiloxane as a copolymerization monomer is known (see Patent Documents 1 to 3). ).
- the polyorganosiloxane used as a copolymerization monomer is, for example, a siloxane having a cyclic structure such as octamethylcyclotetrasiloxane and a disiloxane such as tetramethyldisiloxane.
- a siloxane having a cyclic structure such as octamethylcyclotetrasiloxane and a disiloxane such as tetramethyldisiloxane.
- a polyorganoorganotide obtained by reacting a terminal hydrogen atom with a phenolic compound such as 2-allylphenol or eugenol using a platinum chloride-alcolate complex as a catalyst.
- Siloxane is used (see Patent Documents 4 to 6).
- an organic phase composed of an organic solvent (for example, methylene chloride) containing the polycarbonate-polyorganosiloxane copolymer and unreacted bisphenol are used in the purification process. It is necessary to separate oil and water into A and an aqueous phase containing an amine compound used as a polymerization catalyst. In addition, it is necessary to separate the organic phase and the aqueous phase from oil and water after performing alkali cleaning, acid cleaning and pure water cleaning for removing impurities from the separated organic phase. However, conventionally, this oil / water separation takes time, which adversely affects productivity.
- an organic solvent for example, methylene chloride
- the problem to be solved by the present invention is to provide a polyorganosiloxane having a high oil-water separation rate in the purification process of the polycarbonate-polyorganosiloxane copolymer when used as a raw material for the polycarbonate-polyorganosiloxane copolymer, and Another object of the present invention is to provide a polycarbonate-polyorganosiloxane copolymer obtained using
- the present inventors have found that platinum used as a catalyst in the production of polyorganosiloxane remains in the polyorganosiloxane.
- the polycarbonate-polyorganosiloxane co-polymer is produced using this polyorganosiloxane as a raw material. It has been found that when the polymer is produced by the interfacial polymerization method, the separation of the organic phase and the aqueous phase is adversely affected.
- the present invention has been made based on such findings.
- the present invention relates to polyorganosiloxanes and polycarbonate-polyorganosiloxane copolymers 1 to 10 below.
- 2. The polyorganosiloxane according to 1, wherein the polyorganosiloxane contains platinum.
- 2 '. A polyorganosiloxane produced using a platinum-based catalyst, wherein the platinum content is 1 mass ppm or less.
- 3. The polyorganosiloxane according to 1, 2, or 2 ′, wherein the polyorganosiloxane is represented by the following general formula (1-1).
- R 1 to R 4 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
- Y is an organic residue containing a single bond, aliphatic group or aromatic group, and represents an organic residue bonded to Si and O or Si and Z.
- n is the average number of repetitions.
- m 0 or 1
- Z is independently represents halogen, -R 5 OH, -R 5 COOH , -R 5 NH 2, -R 5 NHR 6, a -COOH or -SH
- R 5 is a straight A chain, a branched or cyclic alkylene group, an aryl-substituted alkylene group, an aryl-substituted alkylene group which may have an alkoxy group on the ring, or an arylene group
- R 6 represents an alkyl group, an alkenyl group, an aryl group or an aralkyl group; Show. ] 4).
- R 1 to R 4 are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and Z is independently 4.
- R 1 to R 4 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
- n is the average number of repetitions.
- a represents a positive integer.
- the polycarbonate-polyorganosiloxane copolymer is a polyorganosiloxane part which is a repeating unit having a structure represented by the following general formula (I) and a repeating unit having a structure represented by the following general formula (II) 10.
- R 11 to R 14 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
- Y 1 represents an organic residue containing a single bond, aliphatic group or aromatic group.
- n1 is the average number of repetitions.
- R 21 and R 22 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms.
- X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, a carbon
- b and c each independently represent an integer of 0 to 4.
- the polyorganosiloxane of the present invention has a low platinum content, and when producing a polycarbonate-polyorganosiloxane copolymer, the oil-water separation rate is high in the purification process of the polycarbonate-polyorganosiloxane copolymer. Therefore, a polycarbonate-polyorganosiloxane copolymer can be produced efficiently by using the polyorganosiloxane of the present invention.
- the polyorganosiloxane of the present invention has a platinum content of 1 mass ppm or less, preferably 0.5 mass ppm or less, more preferably 0.2 mass ppm or less. Since the platinum content in the polyorganosiloxane is 1 ppm by mass or less, when the polycarbonate-polyorganosiloxane copolymer is produced using the polyorganosiloxane, the purification step of the polycarbonate-polyorganosiloxane copolymer is used. The oil / water separation rate can be improved. Moreover, the hue of polyorganosiloxane improves because platinum content in polyorganosiloxane is 1 mass ppm or less.
- the improvement in the hue of the polyorganosiloxane is presumed that the oxidative degradation of the polyorganosiloxane has decreased. In other words, if the color of the polyorganosiloxane is poor, it is presumed that the oxidative degradation of the polyorganosiloxane is progressing. From this, for example, when a composition is produced using the polyorganosiloxane of the present invention as an additive (for example, a release agent) and a molded product is produced from this composition, an effect of improving the hue of the molded product is expected. Is done.
- the polyorganosiloxane of the present invention may contain platinum.
- the polyorganosiloxane of the present invention is preferably produced using a platinum-based catalyst.
- the polyorganosiloxane of the present invention preferably has a repeating unit represented by the following general formula (1).
- R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
- Examples of the halogen atom represented by R 1 or R 2 include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- Examples of the alkyl group represented by R 1 or R 2 include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and various butyl groups (“various” includes linear and all branched ones). And the same applies hereinafter), various pentyl groups, and various hexyl groups.
- Examples of the alkoxy group represented by R 1 or R 2 include a case where the alkyl group moiety is the alkyl group.
- Examples of the aryl group represented by R 1 or R 2 include a phenyl group and a naphthyl group.
- R 1 and R 2 are each preferably a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms. More preferred is a methyl group.
- the polyorganosiloxane of the present invention is preferably represented by the following general formula (1-1).
- R 1 to R 4 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
- Y is an organic residue containing a single bond, aliphatic group or aromatic group, and represents an organic residue bonded to Si and O or Si and Z.
- n is the average number of repetitions.
- m 0 or 1
- Z is independently represents halogen, -R 5 OH, -R 5 COOH , -R 5 NH 2, -R 5 NHR 6, a -COOH or -SH
- R 5 is a straight A chain, a branched or cyclic alkylene group, an aryl-substituted alkylene group, an aryl-substituted alkylene group which may have an alkoxy group on the ring, or an arylene group
- R 6 represents an alkyl group, an alkenyl group, an aryl group or an aralkyl group; Show. ]
- R 1 and R 2 are as described above, and R 3 and R 4 are the same as R 1 and R 2 .
- R 1 to R 4 are all preferably a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, all of which are methyl groups It is more preferable that
- Y is an organic residue containing a single bond, aliphatic group or aromatic group, and is an organic residue bonded to Si and O or Si and Z.
- N is the average number of repetitions, preferably 10 to 1000.
- the value of the average repetition number n is a value calculated by nuclear magnetic resonance (NMR) measurement.
- Z is preferably —R 5 OH, —R 5 COOH, —R 5 NH 2 , —R 5 NHR 6 , —COOH or —SH.
- R 5 represents a linear, branched or cyclic alkylene group, an aryl-substituted alkylene group, an aryl-substituted alkylene group that may have an alkoxy group on the ring, or an arylene group
- R 6 represents an alkyl group
- An alkenyl group, an aryl group or an aralkyl group is shown.
- Z is preferably a residue of a phenol compound having an alkyl group, more preferably an organic residue derived from allylphenol or an organic residue derived from eugenol.
- Examples of the polyorganosiloxane represented by the general formula (1-1) include compounds of the following general formulas (1-2) to (1-12).
- R 1 to R 4 , R 6 and n are as described above, and preferred ones are also the same.
- A represents a positive integer and is usually an integer of 1 to 6.
- the phenol-modified polyorganosiloxane represented by the above general formula (1-2) is preferable from the viewpoint of ease of polymerization when producing the polycarbonate-polyorganosiloxane copolymer.
- ⁇ , ⁇ -bis [3- (o-hydroxyphenyl) propyl] polydimethylsiloxane which is one of the compounds represented by the general formula (1-3)
- ⁇ , ⁇ -bis [3- (4-hydroxy-3-methoxyphenyl) propyl] polydimethylsiloxane which is one of the compounds represented by the general formula (1-4) is preferable.
- the polyorganosiloxane of the present invention is obtained by first obtaining a crude polyorganosiloxane having a platinum content of more than 1 mass ppm by a known production method, and then removing the platinum in the crude polyorganosiloxane using a porous adsorbent. You can get it.
- the method for producing the crude polyorganosiloxane is not particularly limited.
- cyclotrisiloxane and disiloxane are reacted in the presence of an acidic catalyst to synthesize ⁇ , ⁇ -dihydrogenorganopentasiloxane, Addition reaction of phenolic compounds (eg 2-allylphenol, 4-allylphenol, eugenol, 2-propenylphenol) to ⁇ , ⁇ -dihydrogenorganopentasiloxane in the presence of hydrosilylation reaction catalyst By making it, a crude polyorganosiloxane can be obtained. Further, according to the method described in Japanese Patent No.
- octamethylcyclotetrasiloxane and tetramethyldisiloxane are reacted in the presence of sulfuric acid (acidic catalyst), and the resulting ⁇ , ⁇ -dihydrogenorgano is obtained.
- a crude polyorganosiloxane can be obtained by subjecting polysiloxane to an addition reaction with a phenolic compound or the like in the presence of a hydrosilylation catalyst.
- the ⁇ , ⁇ -dihydrogenorganopolysiloxane can be used by appropriately adjusting the chain length n depending on the polymerization conditions, or a commercially available ⁇ , ⁇ -dihydrogenorganopolysiloxane may be used. .
- a platinum-based catalyst is generally used from the viewpoint of reaction rate and selectivity.
- Specific examples of the platinum-based catalyst include chloroplatinic acid, an alcohol solution of chloroplatinic acid, an olefin complex of platinum, a complex of platinum and a vinyl group-containing siloxane, platinum-supported silica, platinum-supported activated carbon, and the like.
- the platinum content in the crude polyorganosiloxane obtained by using a platinum-based catalyst as the hydrosilylation reaction catalyst to the porous adsorbent is 1 mass ppm or less, preferably 0.8.
- the polyorganosiloxane of this invention which is 5 mass ppm or less, More preferably, it is 0.2 mass ppm or less can be obtained.
- the polyorganosiloxane of this invention may contain platinum.
- the platinum content in the polyorganosiloxane in the present invention is measured by using an ICP emission analyzer, and specifically by the method described in the examples.
- the average pore diameter of the porous adsorbent is preferably 1000 mm or less, more preferably 500 mm or less, still more preferably 200 mm or less, still more preferably 150 mm or less, and particularly preferably 100 mm or less. It is.
- the porous adsorbent is not particularly limited as long as it has the above average pore diameter.
- An agent, diatomaceous earth, cellulose or the like can be used.
- the average pore diameter of the porous adsorbent is measured using a fully automatic gas adsorption measuring apparatus, and specifically measured by the method described in the examples. From the viewpoint of separating the porous adsorbent from the polyorganosiloxane after platinum adsorption, the average particle size of the porous adsorbent is usually 1 ⁇ m to 4 mm, preferably 1 to 100 ⁇ m.
- the amount of the porous adsorbent used is not particularly limited, but the amount of the porous adsorbent used is preferably 1 to 30 parts by mass, more preferably 2 to 20 parts by mass with respect to 100 parts by mass of the crude polyorganosiloxane. .
- the porous adsorbent can be separated from the polyorganosiloxane by any separation means.
- means for separating the porous adsorbent from the polyorganosiloxane include a filter and centrifugal separation.
- a filter such as a membrane filter, a sintered metal filter, or a glass fiber filter can be used, but it is particularly preferable to use a membrane filter.
- the temperature is such that the polyorganosiloxane is in a liquid state when adsorbing with the porous adsorbent and separating the porous adsorbent. You may heat. Alternatively, it may be carried out by dissolving in a solvent such as methylene chloride or hexane.
- the polyorganosiloxane of the present invention can be suitably used for the production of a polycarbonate-polyorganosiloxane copolymer (hereinafter sometimes abbreviated as PC-POS copolymer).
- PC-POS copolymer a polycarbonate-polyorganosiloxane copolymer
- a known production method such as an interfacial polymerization method (phosgene method), a pyridine method, or a transesterification method can be used.
- interfacial polymerization the separation process between the organic phase containing the PC-POS copolymer and the aqueous phase containing unreacted substances, catalyst residues, etc.
- the PC-POS copolymer obtained using the polyorganosiloxane of the present invention has a high quality because there are few catalyst residues derived from the platinum-based catalyst contained in the copolymer.
- the PC-POS copolymer of the present invention has a platinum content of 0.4 mass ppm or less, preferably 0.2 mass ppm or less, more preferably 0.08 mass ppm or less, still more preferably 0.06 mass. ppm or less. Note that the platinum content in the PC-POS copolymer is measured using an ICP emission analyzer in the same manner as the measurement of the platinum content in the polyorganosiloxane.
- the PC-POS copolymer of the present invention is preferably a polyorganosiloxane part which is a repeating unit having a structure represented by the following general formula (I), and a repeating unit having a structure represented by the following general formula (II) And a polycarbonate part.
- R 11 to R 14 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
- Y 1 represents an organic residue containing a single bond, aliphatic group or aromatic group.
- n1 is the average number of repetitions.
- R 21 and R 22 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms.
- X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, a carbon An arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO 2 —, —O— or —CO—; b and c each independently represent an integer of 0 to 4.
- R 11 to R 14 , Y 1 and n1 are the same as R 1 to R 4 , Y and n in the general formula
- the method for producing the PC-POS copolymer there is no particular limitation on the method for producing the PC-POS copolymer, and it can be produced by referring to a known method for producing a PC-POS copolymer, for example, the method described in JP 2010-241943 A. .
- the aromatic polycarbonate oligomer prepared in advance and the polyorganosiloxane of the present invention are dissolved in a water-insoluble organic solvent (such as methylene chloride), and the alkalinity of the dihydric phenol compound (such as bisphenol A).
- Compound aqueous solution sodium hydroxide aqueous solution, etc.
- tertiary amine triethylamine, etc.
- quaternary ammonium salt trimethylbenzylammonium chloride, etc.
- the PC-POS copolymer can also be produced by copolymerizing polyorganosiloxane, dihydric phenol, phosgene, carbonate ester or chloroformate.
- the polyorganosiloxane represented by the general formula (1-1) is preferably used as the polyorganosiloxane.
- the content of the repeating unit including the structure represented by the general formula (I) can be adjusted by adjusting the amount of the polyorganosiloxane represented by the general formula (1-1). it can.
- the polycarbonate oligomer can be produced by reacting a dihydric phenol and a carbonate precursor such as phosgene in an organic solvent such as methylene chloride, chlorobenzene, or chloroform.
- a carbonate precursor such as phosgene
- organic solvent such as methylene chloride, chlorobenzene, or chloroform.
- carbonate precursor like dihydric phenol and diphenyl carbonate.
- dihydric phenol it is preferable to use a dihydric phenol represented by the following general formula (2).
- R 21 , R 22 , X, b and c are as described above.
- Examples of the dihydric phenol represented by the general formula (2) include 2,2-bis (4-hydroxyphenyl) propane [bisphenol A], bis (4-hydroxyphenyl) methane, 1,1-bis ( Bis (hydroxyphenyl) alkanes such as 4-hydroxyphenyl) ethane and 2,2-bis (4-hydroxy-3,5-dimethylphenyl) propane, 4,4′-dihydroxydiphenyl, bis (4-hydroxyphenyl) And cycloalkane, bis (4-hydroxyphenyl) oxide, bis (4-hydroxyphenyl) sulfide, bis (4-hydroxyphenyl) sulfone, bis (4-hydroxyphenyl) sulfoxide, and bis (4-hydroxyphenyl) ketone. It is done.
- bis (hydroxyphenyl) alkane dihydric phenol is preferable, and bisphenol A is more preferable.
- dihydric phenols other than bisphenol A include bis (hydroxyaryl) alkanes, bis (hydroxyaryl) cycloalkanes, dihydroxyaryl ethers, dihydroxydiaryl sulfides, dihydroxydiaryl sulfoxides, dihydroxydiaryl sulfones, and dihydroxy. Examples include diphenyls, dihydroxydiarylfluorenes, dihydroxydiaryladamantanes and the like. These dihydric phenols may be used individually by 1 type, and 2 or more types may be mixed and used for them.
- bis (hydroxyaryl) alkanes examples include bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, 2,2-bis (4-hydroxyphenyl) butane, 2,2- Bis (4-hydroxyphenyl) octane, bis (4-hydroxyphenyl) phenylmethane, bis (4-hydroxyphenyl) diphenylmethane, 2,2-bis (4-hydroxy-3-methylphenyl) propane, bis (4-hydroxy Phenyl) naphthylmethane, 1,1-bis (4-hydroxy-t-butylphenyl) propane, 2,2-bis (4-hydroxy-3-bromophenyl) propane, 2,2-bis (4-hydroxy-3) , 5-Dimethylphenyl) propane, 2,2-bis (4-hydroxy-3-chlorophenyl) Propane, 2,2-bis (4-hydroxy-3,5-dichlorophenyl) propane, 2,2-bis (4-hydroxy-3,5-dibromophenyl) propane.
- Examples of bis (hydroxyaryl) cycloalkanes include 1,1-bis (4-hydroxyphenyl) cyclopentane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1-bis (4-hydroxyphenyl) -3,5,5-trimethylcyclohexane, 2,2-bis (4-hydroxyphenyl) norbornane, 1,1-bis (4-hydroxyphenyl) cyclododecane and the like.
- Examples of dihydroxyaryl ethers include 4,4'-dihydroxyphenyl ether and 4,4'-dihydroxy-3,3'-dimethylphenyl ether.
- dihydroxydiaryl sulfides examples include 4,4'-dihydroxydiphenyl sulfide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfide, and the like.
- dihydroxydiaryl sulfoxides examples include 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide, and the like.
- dihydroxydiaryl sulfones examples include 4,4'-dihydroxydiphenyl sulfone and 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfone.
- dihydroxydiphenyls examples include 4,4'-dihydroxydiphenyl.
- dihydroxydiarylfluorenes include 9,9-bis (4-hydroxyphenyl) fluorene and 9,9-bis (4-hydroxy-3-methylphenyl) fluorene.
- dihydroxydiaryladamantanes examples include 1,3-bis (4-hydroxyphenyl) adamantane, 2,2-bis (4-hydroxyphenyl) adamantane, 1,3-bis (4-hydroxyphenyl) -5,7- Examples thereof include dimethyladamantane.
- dihydric phenols for example, 4,4 ′-[1,3-phenylenebis (1-methylethylidene)] bisphenol, 10,10-bis (4-hydroxyphenyl) -9-anthrone, 1,5 -Bis (4-hydroxyphenylthio) -2,3-dioxapentane and the like.
- the PC-POS copolymer comprises a dihydric phenol represented by the general formula (2), a polyorganosiloxane represented by the following general formula (3), phosgene, a carbonate ester or a chloroformate. It can also be produced by copolymerization.
- the polyorganosiloxane represented by the following general formula (3) is a reaction product of the polyorganosiloxane represented by the general formula (1-1) and a diisocyanate compound.
- R 1 to R 4 , n, m, Y and Z are as defined above, and preferred ones are also the same.
- Z 1 is a divalent group derived from Z after Z in the polyorganosiloxane represented by the general formula (1-1) reacts with the —NCO group in the diisocyanate compound.
- ⁇ represents a divalent group derived from a diisocyanate compound or a divalent group derived from dicarboxylic acid or a halide of dicarboxylic acid.
- a terminal terminator can be used.
- the terminal terminator include monohydric phenols such as phenol, p-cresol, p-tert-butylphenol, p-tert-octylphenol, p-cumylphenol, p-nonylphenol, and p-tert-amylphenol. be able to. These monohydric phenols may be used individually by 1 type, and may be used in combination of 2 or more type.
- n degree of polymerization indicating the chain length of the polyorganosiloxane of the general formula (1-1) is usually about 10 to 1,000, and the impact strength is improved. From the viewpoint of obtaining workability and excellent flame retardancy, it is preferably 30 to 600, more preferably 40 to 300, and still more preferably 40 to 200. When n is 10 or more, the effect of improving the impact strength is sufficient, and when it is 1,000 or less, the handleability in producing the PC-POS copolymer is improved and the workability is not impaired.
- the viscosity average molecular weight of the PC-POS copolymer of the present invention can be produced by using a molecular weight adjusting agent or the like as appropriate depending on the intended use or product. Usually, it is produced in the range of about 14,000 to 23,000, preferably about 15,000 to 22,000. When the viscosity average molecular weight is 14,000 or more, the rigidity and impact strength of the molded product are sufficient, and when it is 23,000 or less, the viscosity of the PC-POS copolymer does not become too large, and the productivity at the time of production is good. In addition, there is no possibility that it will be difficult to form a thin wall.
- the mixture is allowed to stand to separate into an aqueous phase and a water-insoluble organic solvent phase [separation step], and the water-insoluble organic solvent phase is washed (preferably a basic aqueous solution, an acidic aqueous solution, water
- the PC-POS copolymer can be obtained by washing (in order) [washing step] and concentrating [concentration step], pulverizing [grinding step] and drying [drying step]. According to the present invention, the oil-water separation rate in the separation step and the washing step is high, and the PC-POS copolymer can be produced efficiently.
- Platinum content The platinum content of the sample was determined by subjecting the organic matter in PDMS-PC to sulfate ashing, and then dissolving the residue with hydrofluoric acid and aqua regia. Using Hitachi High-Tech Science Co., Ltd., trade name: “SPS5100”), the measurement was performed under the calibration curve measurement conditions.
- Water content in the organic phase after oil-water separation was measured using a water vaporizer (“VA-100” manufactured by Mitsubishi Chemical Corporation) and a trace water analyzer (Mitsubishi Chemical). The water content was titrated by Karl Fischer titration using “CA-100 type” manufactured by Co., Ltd. The measurement was performed under measurement conditions in which the flow rate of nitrogen gas in the moisture vaporizer was 250 ml / min and the furnace temperature of the moisture vaporizer was 230 ° C.
- Example 1 (1) Production of crude polyorganosiloxane 594 g (2 mol) of octamethylcyclotetrasiloxane, 30.0 g (0.2 mol) of 1,1,3,3-tetramethyldisiloxane and 35 g of 86 mass% sulfuric acid were mixed. And stirred at room temperature for 17 hours. The oil phase was separated, 25 g of sodium bicarbonate was added, and the mixture was stirred for 1 hour to neutralize. After filtration, vacuum distillation was performed at 150 ° C. and 400 Pa to distill off volatile components mainly composed of low molecular weight polyorganosiloxane.
- the activated clay used as the adsorbent was suction filtered using a membrane filter (ADVANTEC, polytetrafluoroethylene filter paper, pore size: 0.2 ⁇ m) to obtain a filtrate.
- the filtrate was concentrated to remove methylene chloride, followed by vacuum drying to obtain 2-allylphenol-terminated PDMS (PDMS-1).
- the platinum content in the 2-allylphenol-terminated PDMS was 0.1 ppm by mass.
- the platinum removal rate by this purification was 95% by mass.
- the APHA of this purified polyorganosiloxane was 25. The results are shown in Table 1.
- Example 2 Example 1 except that the crude PDMS (platinum content: 2.0 mass ppm) produced in Example 1 (1) was used, and the adsorbent shown in Table 1 was used as the adsorbent instead of activated clay. Similarly, polyorganosiloxanes (PDMS-2 to PDMS-6) were produced and measured. The results are shown in Table 1.
- the adsorbent used in each Example is as follows.
- Acid clay made by Mizusawa Chemical Co., Ltd., trade name: “Mizuka Ace # 20”, average pore diameter: 108 mm
- Activated carbon (Wako Pure Chemical Industries, Ltd., average pore diameter: 40 mm)
- Silica-magnesia manufactured by Mizusawa Chemical Industry Co., Ltd., trade name: “Mizuka Life P-1”, average pore diameter: 70 mm
- Synthetic zeolite manufactured by Mizusawa Chemical Co., Ltd., trade name: “Mizuka Sieves EX-122”, average pore diameter: 19 mm
- Activated alumina manufactured by Mizusawa Chemical Co., Ltd., trade name: “Activated Alumina GP-20”, average pore diameter: 111 mm
- Comparative Example 1 A polyorganosiloxane (PDMS-7) was prepared in the same manner as in Example 1 except that the crude PDMS (platinum content: 2.0 mass ppm) produced in Example 1 (1) was used and no adsorbent was used. ) And measured. The results are shown in Table 1.
- Comparative Example 2 In a cylindrical glass container having an inner diameter of 10 cm and a height of 18 cm, a cylindrical polypropylene filter having an inner diameter of 8.5 cm and a length of 12.5 cm (“BFP-410-1 type” manufactured by Taki Engineering Co., Ltd.) is set. Then, 20 g of the crude PDMS (platinum content: 2.0 mass ppm) produced in Example 1 (1) was poured into the resulting solution to obtain a filtrate as polyorganosiloxane (PDMS-8), which was then measured. The results are shown in Table 1.
- the polyorganosiloxane (PDMS-7) of Comparative Example 1 that did not use an adsorbent was inferior in hue.
- Comparative Example 2 using a polypropylene filter platinum could not be removed, and the resulting polyorganosiloxane (PDMS-8) was inferior in hue as in Comparative Example 1.
- platinum can be effectively removed, and the obtained polyorganosiloxanes (PDMS-1 to PDMS-6) all have a platinum content of 1 mass ppm or less. In addition, the hue was good.
- the tubular reactor had a jacket portion, and the temperature of the reaction solution was kept at 40 ° C. or lower by passing cooling water through the jacket.
- the reaction solution exiting the tubular reactor was continuously introduced into a 40-liter baffled tank reactor equipped with a receding blade, and further, 2.8 L / h of BPA sodium hydroxide aqueous solution, 25 mass.
- the reaction was carried out by adding 0.07 L / h of a sodium hydroxide aqueous solution, 17 L / h of water, and 0.64 L / h of a 1 mass% triethylamine aqueous solution.
- the reaction liquid overflowing from the tank reactor was continuously extracted and allowed to stand to separate and remove the aqueous phase, and the methylene chloride phase was collected to obtain a polycarbonate oligomer solution.
- the polycarbonate oligomer concentration of the polycarbonate oligomer solution was 318 g / L.
- the chloroformate group concentration in the polycarbonate oligomer was 0.75 mol / L.
- the chloroformate group concentration was determined from 1 H-NMR analysis.
- the weight average molecular weight (Mw) of the polycarbonate oligomer was 1190.
- the weight average molecular weight (Mw) of the polycarbonate oligomer was measured as a polystyrene-equivalent molecular weight under the following conditions by GPC using tetrahydrofuran as a developing solvent.
- Example 7 (1) Production of Polycarbonate-Polyorganosiloxane Copolymer A glass reactor having an inner diameter of 10.5 cm and a height of 15.5 cm, four baffle plates having a width of 1.5 cm and a height of 13 cm, a width of 9 cm, and a length of 1.5 cm 2-allylphenol end-modified PDMS (repeated with 377 mL of the polycarbonate oligomer solution prepared in Preparation Example 1 above, 223 mL of methylene chloride, and 40 repeats of dimethylsiloxy units in a 1 L tank reactor equipped with a T-shaped stirring blade of PDMS-1 produced in Example 1) 10.2 g and 138 ⁇ L of triethylamine were charged, and 28.26 g of a 6.4% by mass aqueous sodium hydroxide solution was added thereto with stirring, and the polycarbonate oligomer and 2-allylphenol-terminated PDMS were added for 10 minutes.
- Example 7 a copolymer was produced in the same manner as in Example 7 except that PDMS-2 to PDMS-8 were used instead of PDMS-1, and washing and oil / water separation were performed. The time until the moisture in the phase reached a predetermined value was determined. The results are shown in Table 2.
- the polyorganosiloxane of the present invention has a low platinum content, and when producing a polycarbonate-polyorganosiloxane copolymer, the oil-water separation rate is high in the purification process of the polycarbonate-polyorganosiloxane copolymer. Therefore, a polycarbonate-polyorganosiloxane copolymer can be produced efficiently by using the polyorganosiloxane of the present invention.
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Abstract
Description
しかしながら、従来、この油水分離に時間がかかり、生産性に悪影響を与えている。
1.白金含有量が1質量ppm以下であるポリオルガノシロキサン。
2.前記ポリオルガノシロキサンが白金を含む、前記1に記載のポリオルガノシロキサン。
2’.白金系触媒を用いて製造したポリオルガノシロキサンであって、白金含有量が1質量ppm以下であるポリオルガノシロキサン。
3.前記ポリオルガノシロキサンが下記一般式(1-1)で表される、前記1、2又は2’に記載のポリオルガノシロキサン。
4.R1~R4がそれぞれ独立に、水素原子、炭素数1~6のアルキル基、炭素数1~6のアルコキシ基又は炭素数6~12のアリール基であり、Zがそれぞれ独立に、-R5OH、-R5COOH、-R5NH2、-R5NHR6、-COOH又は-SHである、前記3に記載のポリオルガノシロキサン。
5.前記ポリオルガノシロキサンが下記一般式(1-2)又は(1-4)で表される、前記1~4のいずれかに記載のポリオルガノシロキサン。
6.R1~R4がいずれもメチル基である、前記3~5のいずれかに記載のポリオルガノシロキサン。
7.前記ポリオルガノシロキサンが、白金系触媒を用いて製造されたものである、前記1~6のいずれかに記載のポリオルガノシロキサン。
8.前記1~7のいずれかに記載のポリオルガノシロキサンを用いて製造されたポリカーボネート-ポリオルガノシロキサン共重合体。
9.白金含有量が0.4質量ppm以下であるポリカーボネート-ポリオルガノシロキサン共重合体。
10.前記ポリカーボネート-ポリオルガノシロキサン共重合体が、下記一般式(I)で表される構造を有する繰返し単位であるポリオルガノシロキサン部と、下記一般式(II)で表される構造の繰返し単位であるポリカーボネート部とを有する、前記8又は9に記載のポリカーボネート-ポリオルガノシロキサン共重合体。
本発明のポリオルガノシロキサンは、白金含有量が1質量ppm以下であり、好ましくは0.5質量ppm以下、より好ましくは0.2質量ppm以下である。ポリオルガノシロキサン中の白金含有量が1質量ppm以下であることで、該ポリオルガノシロキサンを用いてポリカーボネート-ポリオルガノシロキサン共重合体を製造する際にポリカーボネート-ポリオルガノシロキサン共重合体の精製工程における油水分離速度を向上することができる。また、ポリオルガノシロキサン中の白金含有量が1質量ppm以下であることで、ポリオルガノシロキサンの色相が向上する。ここで、ポリオルガノシロキサンの色相が向上するということは、ポリオルガノシロキサンの酸化劣化が少なくなったと推測される。これを言い換えると、ポリオルガノシロキサンの色相が悪いとポリオルガノシロキサンの酸化劣化が進んでいると推測される。このことから、例えば、本発明のポリオルガノシロキサンを添加剤(例えば離型剤)として用いて組成物を製造し、この組成物から成形品を作ると、成形品の色相が向上する効果が期待される。つまり、色相が悪いポリオルガノシロキサンを添加剤として用いた場合と比較して、本発明のポリオルガノシロキサンを用いた場合には成形品の色相が向上すると期待される。
本発明のポリオルガノシロキサンは白金を含んでいてもよい。本発明のポリオルガノシロキサンは、好ましくは白金系触媒を用いて製造されたものである。
なお、R1及びR2としては、いずれも、好ましくは、水素原子、炭素数1~6のアルキル基、炭素数1~6のアルコキシ基又は炭素数6~12のアリール基であり、いずれもメチル基であることがより好ましい。
これらの中でも、ポリカーボネート-ポリオルガノシロキサン共重合体を製造する際の重合の容易さの観点においては、上記一般式(1-2)で表されるフェノール変性ポリオルガノシロキサンが好ましい。また、入手の容易さの観点においては、上記一般式(1-3)で表される化合物中の一種であるα,ω-ビス[3-(o-ヒドロキシフェニル)プロピル]ポリジメチルシロキサン、上記一般式(1-4)で表される化合物中の一種であるα,ω-ビス[3-(4-ヒドロキシ-3-メトキシフェニル)プロピル]ポリジメチルシロキサンが好ましい。
本発明におけるポリオルガノシロキサン中の白金含有量は、ICP発光分析装置を用いて測定され、具体的には実施例に記載の方法で測定される。
多孔性吸着剤としては、上記の平均細孔直径を有するものであれば特に限定されないが、例えば活性白土、酸性白土、活性炭、合成ゼオライト、天然ゼオライト、活性アルミナ、シリカ、シリカ-マグネシア系複合吸着剤、珪藻土、セルロース等を用いることができる。
多孔性吸着剤の平均細孔直径は、全自動ガス吸着測定装置を用いて測定され、具体的には実施例に記載の方法で測定される。
また、白金の吸着後に多孔性吸着剤をポリオルガノシロキサンから分離する観点から、多孔性吸着剤の平均粒子径は、通常1μm~4mm、好ましくは1~100μmである。
本発明のポリオルガノシロキサンは、ポリカーボネート-ポリオルガノシロキサン共重合体(以下、PC-POS共重合体と略記することがある)の製造に好適に用いることができる。PC-POS共重合体を製造する方法としては、界面重合法(ホスゲン法)、ピリジン法、エステル交換法等の公知の製造方法を用いることができる。特に界面重合法の場合に、PC-POS共重合体を含む有機相と未反応物や触媒残渣等を含む水相との分離工程が容易となり、アルカリ洗浄、酸洗浄、純水洗浄による各洗浄工程におけるPC-POS共重合体を含む有機相と水相との分離が容易となり、効率よくPC-POS共重合体が得られる。
また、本発明のポリオルガノシロキサンを用いて得られるPC-POS共重合体は、共重合体中に含まれる白金系触媒に由来する触媒残渣が少なく、高品質である。本発明のPC-POS共重合体は、白金含有量が0.4質量ppm以下であり、好ましくは0.2質量ppm以下、より好ましくは0.08質量ppm以下、更に好ましくは0.06質量ppm以下である。なお、PC-POS共重合体中の白金含有量は、上記のポリオルガノシロキサン中の白金含有量の測定と同様に、ICP発光分析装置を用いて測定される。
一般式(I)中、R11~R14、Y1及びn1は、前記一般式(1-1)におけるR1~R4、Y及びnと同様であり、好ましい範囲も同様である。
具体的には、予め製造された芳香族ポリカーボネートオリゴマーと、本発明のポリオルガノシロキサンとを、非水溶性有機溶媒(塩化メチレン等)に溶解させ、二価フェノール系化合物(ビスフェノールA等)のアルカリ性化合物水溶液(水酸化ナトリウム水溶液等)を加え、重合触媒として第三級アミン(トリエチルアミン等)や第四級アンモニウム塩(トリメチルベンジルアンモニウムクロライド等)を用い、末端停止剤(p-t-ブチルフェノール等の1価フェノール)の存在下、界面重縮合反応させることにより製造できる。また、PC-POS共重合体は、ポリオルガノシロキサンと、二価フェノールと、ホスゲン、炭酸エステル又はクロロホーメートとを共重合させることによっても製造できる。
二価フェノールとしては、下記一般式(2)で表される二価フェノールを用いることが好ましい。
これらの中でも、ビス(ヒドロキシフェニル)アルカン系2価フェノールが好ましく、ビスフェノールAがより好ましい。二価フェノールとしてビスフェノールAを用いた場合、前記一般式(II)において、Xがイソプロピリデン基であり、且つb=c=0のPC-POS共重合体となる。
Z1は、前記一般式(1-1)で表されるポリオルガノシロキサンにおけるZがジイソシアネート化合物における-NCO基と反応した後の、Zに由来する2価の基である。
また、βは、ジイソシアネート化合物由来の2価の基又はジカルボン酸若しくはジカルボン酸のハロゲン化物由来の2価の基を示し、例えば、以下の一般式(3-1)~(3-5)のいずれかで表される2価の基が挙げられる。
なお、粘度平均分子量(Mv)は、20℃における塩化メチレン溶液の極限粘度〔η〕を測定し、Schnellの式(〔η〕=1.23×10-5×Mv0.83)より算出した値である。
なお、各例における特性値、評価結果は、以下の要領に従って求めた。
細孔分析装置(QUANTACHROME社製「AUTOSORB-3」)を使用し、吸着剤を200℃、3時間で真空排気処理し、定容法(窒素吸着)で測定した。
試料中の白金含有量は、PDMS-PC中の有機物を硫酸灰化処理後、残分をフッ化水素酸および王水で溶解し、その溶液をICP発光分析装置((株)日立ハイテクサイエンス製、商品名:「SPS5100」)を用いて、検量線法の測定条件で測定した。
PDMSからの白金除去率は、以下の方法で算出した。
除去率(%)={1-精製後のPDMSの白金含有量(質量ppm)/精製前のPDMSの白金含有量(質量ppm)}×100
具体的には、精製後のPDMSの白金含有量は、実施例1~6では、粗ポリオルガノシロキサンを吸着剤で精製した後のPDMSの白金含有量を示し、比較例2では、粗ポリオルガノシロキサンをポリプロピレン製フィルタで精製した後のPDMSの白金含有量を示す。精製前のPDMSの白金含有量は、比較例1で測定したPDMSの白金含有量を示す。
APHA標準色を用い、目視にて色相評価した。
粘度平均分子量(Mv)は、ウベローデ型粘度計を用いて、20℃における塩化メチレン溶液の粘度を測定し、これより極限粘度[η]を求め、次式にて算出した。
[η]=1.23×10-5Mv0.83
油水分離後の有機相中の水分量は、水分気化装置(三菱化学(株)製「VA-100型」)及び微量水分測定装置(三菱化学(株)製「CA-100型」)を用い、カールフィッシャー滴定により、水分を滴定した。測定は、水分気化装置の窒素ガスの流量が250ml/minであり、水分気化装置の加熱炉温度が230℃である測定条件で行った。
(1)粗ポリオルガノシロキサンの製造
オクタメチルシクロテトラシロキサン594g(2モル)、1,1,3,3-テトラメチルジシロキサン30.0g(0.2モル)及び86質量%硫酸35gを混合し、室温で17時間撹拌した。オイル相を分離し、炭酸水素ナトリウム25gを加え、1時間撹拌し中和した。濾過後、150℃、400Paで真空蒸留し、低分子量ポリオルガノシロキサンを主とする揮発分を留去した。
2-アリルフェノール148g(1.1モル)及び塩化白金酸・6水和物0.0044gをイソプロピルアルコール溶液1mLに溶解したものに、上記で得られたオイル309gを90℃で添加した。この混合物を90~115℃の温度に保ちながら3時間撹拌した。
このようにして得られた生成物を塩化メチレン10Lに溶解後、0.3mol/L NaOH水溶液1.5Lで2回洗浄し、中和のため2質量%リン酸1.5Lで洗浄し、さらに水で1回洗浄した。30~40℃とし、減圧下で塩化メチレンを濃縮留去し、さらに減圧下で60℃にて塩化メチレンを留去することにより、2-アリルフェノール末端変性PDMS(粗PDMS)を得た。
得られた粗PDMSの構造及び組成を1H-NMRにより分析したところ、得られた2-アリルフェノール変性PDMSのジメチルシロキシ単位の繰り返し数は40であった。また、粗PDMS中の白金含有量は2.0質量ppmであった。
100mLのガラス容器に、塩化メチレン20gと上記で得られた2-アリルフェノール変性PDMS20gとを加え、塩化メチレンに2-アリルフェノール変性PDMSを溶解させた。次いで、吸着剤として活性白土(水澤化学工業(株)製、商品名:「ガレオンアースV2」、平均細孔直径:63Å)1gを添加して17℃で3時間撹拌させた。メンブランフィルタ(ADVANTEC社製、ポリテトラフルオロエチレン製の濾紙、細孔径:0.2μm)を用いて、吸着剤として用いた活性白土を吸引濾過し、濾液を得た。この濾液を濃縮させて、塩化メチレンを留去後、真空乾燥して2-アリルフェノール末端PDMS(PDMS-1)を得た。この2-アリルフェノール末端PDMS中の白金含有量は0.1質量ppmであった。この精製による白金除去率は95質量%であった。この精製されたポリオルガノシロキサンのAPHAは25であった。結果を表1に示す。
実施例1(1)で製造した粗PDMS(白金含有量:2.0質量ppm)を用いて、吸着剤として活性白土に代えて表1に示す吸着剤を用いたこと以外は実施例1と同様にして、ポリオルガノシロキサン(PDMS-2~PDMS-6)を製造し、測定を行った。結果を表1に示す。
なお、各実施例で使用した吸着剤は以下のとおりである。
酸性白土(水澤化学工業(株)製、商品名:「ミズカエース#20」、平均細孔直径:108Å)
活性炭(和光純薬工業(株)製、平均細孔直径:40Å)
シリカ-マグネシア(水澤化学工業(株)製、商品名:「ミズカライフP-1」、平均細孔直径:70Å)
合成ゼオライト(水澤化学工業(株)製、商品名:「ミズカシーブスEX-122」、平均細孔直径:19Å)
活性アルミナ(水澤化学工業(株)製、商品名:「活性アルミナGP-20」、平均細孔直径:111Å)
実施例1(1)で製造した粗PDMS(白金含有量:2.0質量ppm)を用いて、吸着剤を使用しなかった以外は実施例1と同様にして、ポリオルガノシロキサン(PDMS-7)を製造し、測定を行った。結果を表1に示す。
内径10cm、高さ18cmの円筒型ガラス容器に、内径8.5cm、長さ12.5cmの筒型ポリプロピレン製フィルタ(タキエンジニアリング(株)製「BFP-410-1型」)をセットし、そこに実施例1(1)で製造した粗PDMS(白金含有量:2.0質量ppm)20gを流し入れ、ろ液をポリオルガノシロキサン(PDMS-8)として得、その後、測定を行った。結果を表1に示す。
これに対し、吸着剤を用いた実施例1~6では白金を効果的に除去でき、得られたポリオルガノシロキサン(PDMS-1~PDMS-6)は、いずれも白金含有量が1質量ppm以下であり、しかも色相が良好であった。
<ポリカーボネートオリゴマーの製造>
5.6質量%水酸化ナトリウム水溶液に、後から溶解するビスフェノールA(以下「BPA」)に対して2000質量ppmの亜ジチオン酸ナトリウムを加え、これにBPA濃度が13.5質量%になるようにBPAを溶解し、BPAの水酸化ナトリウム水溶液を調製した。
このBPAの水酸化ナトリウム水溶液40L/h、塩化メチレン15L/h、ホスゲン4.0kg/hの流量で、内径6mm、管長30mの管型反応器に連続的に通した。管型反応器はジャケット部分を有しており、ジャケットに冷却水を通して反応液の温度を40℃以下に保った。
管型反応器を出た反応液は後退翼を備えた内容積40Lのバッフル付き槽型反応器へ連続的に導入され、ここに、更にBPAの水酸化ナトリウム水溶液2.8L/h、25質量%水酸化ナトリウム水溶液0.07L/h、水17L/h、1質量%トリエチルアミン水溶液0.64L/hの流量で添加して反応を行った。槽型反応器から溢れ出る反応液を連続的に抜き出し、静置することで水相を分離除去し、塩化メチレン相を採取して、ポリカーボネートオリゴマー溶液を得た。
ポリカーボネートオリゴマー中のクロロホーメート基濃度は0.75mol/Lであった。なお、クロロホーメート基濃度は、1H-NMR分析から求めた。
ポリカーボネートオリゴマーの重量平均分子量(Mw)は1190であった。
ポリカーボネートオリゴマーの重量平均分子量(Mw)は、展開溶媒としてテトラヒドロフランを用い、GPCにより、以下の条件でポリスチレン換算分子量として測定した。
カラム:東ソー(株)製「TOSOH TSK-GEL MULTIPORE HXL-M」(2本)+昭和電工(株)製「Shodex KF801」(1本)
温度:40℃
流速:1.0ml/分
検出器:RI
(1)ポリカーボネート-ポリオルガノシロキサン共重合体の製造
内径10.5cm、高さ15.5cmのガラス反応器、幅1.5cm、高さ13cmの邪魔板4本、横幅9cm、縦幅1.5cmのT字型撹拌翼を備えた1L槽型反応器に上記製造例1で製造したポリカーボネートオリゴマー溶液377mL、塩化メチレン223mL、ジメチルシロキシ単位の繰返し数が40である2-アリルフェノール末端変性PDMS(実施例1で製造したPDMS-1)10.2g及びトリエチルアミン138μLを仕込み、撹拌下でここに6.4質量%水酸化ナトリウム水溶液28.26gを加え、10分間ポリカーボネートオリゴマーと2-アリルフェノール末端変性PDMSの反応を行った。この重合液に、p-t-ブチルフェノール(PTBP)の塩化メチレン溶液(PTBP3.44gを塩化メチレン24mLに溶解したもの)、BPAの水酸化ナトリウム水溶液(NaOH14.9g及び亜ジチオン酸ナトリウム55mgを水219mLに溶解した水溶液に、BPA27.75gを溶解させたもの)を添加し50分間重合反応を実施した。希釈のため塩化メチレン95mLを加え10分間撹拌した。
このようにして得られた重合液を内径4.2cm、高さ40cmの円筒型ガラス容器に満たし、所定時間経過後に、下から20cmの位置の有機相(ポリカーボネート-ポリオルガノシロキサン共重合体を含む塩化メチレン溶液)を採取し、その有機相中の水分量を前記方法により測定した。経過時間ごとの有機相中の残存水分量をプロットすることで経過時間と有機相中の残存水分量との関係式を求め、その関係式から有機相中水分が2.8質量%に到達するまでの時間(分)を求めた。
その後、有機層を全量採取し、遠心機(日立工機(株)製「CF6L」)を用いて3000rpmで5分間遠心分離し、分離した水分を除去して有機相を得た。
上記重合液分離工程で得られた有機相に、0.03mol/LのNaOH水溶液を水相比で15容量%となるように加え、350rpmで10分間撹拌した。撹拌後に得られた溶液を内径4.2cm、高さ40cmの円筒型ガラス容器に満たし、所定時間経過後の、下から20cmの位置の有機相(ポリカーボネート-ポリオルガノシロキサン共重合体を含む塩化メチレン溶液)を採取し、その有機相中の水分量を前記方法により測定した。経過時間ごとの有機相中の残存水分量をプロットすることで経過時間と有機相中の残存水分量との関係式を求め、その関係式から有機相中水分が1.5質量%に到達するまでの時間(分)を求めた。
その後、有機層を全量採取し、遠心機(日立工機(株)製「CF6L」)を用いて3000rpmで5分間遠心分離し、分離した水分を除去して有機相を得た。
上記NaOH水溶液洗浄工程で得られた有機相に、0.2mol/LのHCl水溶液を水相比で15容量%となるように加え、500rpmで10分間撹拌した。撹拌後に得られた溶液を内径4.2cm、高さ40cmの円筒型ガラス容器に満たし、所定時間経過後の、下から20cmの位置の有機相(ポリカーボネート-ポリオルガノシロキサン共重合体を含む塩化メチレン溶液)を採取し、その有機相中の水分量を前記方法により測定した。経過時間ごとの有機相中の残存水分量をプロットすることで経過時間と有機相中の残存水分量との関係式を求め、その関係式から有機相中水分が1.5質量%に到達するまでの時間(分)を求めた。
その後、有機層を全量採取し、遠心機(日立工機(株)製「CF6L」)を用いて3000rpmで5分間遠心分離し、分離した水分を除去して有機相を得た。
上記HCl水溶液洗浄工程で得られた有機相に、純水を水相比で15容量%となるように加え、500rpmで10分間撹拌した。撹拌後に得られた溶液を内径4.2cm、高さ30cmの円筒型ガラス容器に満たし、所定時間経過後の、下から20cmの位置の有機相(ポリカーボネート-ポリオルガノシロキサン共重合体を含む塩化メチレン溶液)を採取し、その有機相中の水分量を前記方法により測定した。経過時間ごとの有機相中の残存水分量をプロットすることで経過時間と有機相中の残存水分量との関係式を求め、その関係式から有機相中水分が1.5質量%に到達するまでの時間(分)を求めた。
その後、有機層を全量採取し、遠心機(日立工機(株)製「CF6L」)を用いて3000rpmで5分間遠心分離し、分離した水分を除去して有機相を得た。
実施例7において、PDMS-1に代えてPDMS-2~PDMS-8を用いたこと以外は実施例7と同様にして、共重合体を製造し、洗浄及び油水分離を行い、各工程における有機相中水分が所定値に到達するまでの時間を求めた。結果を表2に示す。
Claims (10)
- 白金含有量が1質量ppm以下であるポリオルガノシロキサン。
- 前記ポリオルガノシロキサンが白金を含む、請求項1に記載のポリオルガノシロキサン。
- 前記ポリオルガノシロキサンが下記一般式(1-1)で表される、請求項1又は2に記載のポリオルガノシロキサン。
- R1~R4がそれぞれ独立に、水素原子、炭素数1~6のアルキル基、炭素数1~6のアルコキシ基又は炭素数6~12のアリール基であり、Zがそれぞれ独立に、-R5OH、-R5COOH、-R5NH2、-R5NHR6、-COOH又は-SHである、請求項3に記載のポリオルガノシロキサン。
- R1~R4がいずれもメチル基である、請求項3~5のいずれかに記載のポリオルガノシロキサン。
- 前記ポリオルガノシロキサンが、白金系触媒を用いて製造されたものである、請求項1~6のいずれかに記載のポリオルガノシロキサン。
- 請求項1~7のいずれかに記載のポリオルガノシロキサンを用いて製造されたポリカーボネート-ポリオルガノシロキサン共重合体。
- 白金含有量が0.4質量ppm以下であるポリカーボネート-ポリオルガノシロキサン共重合体。
- 前記ポリカーボネート-ポリオルガノシロキサン共重合体が、下記一般式(I)で表される構造を有する繰返し単位であるポリオルガノシロキサン部と、下記一般式(II)で表される構造の繰返し単位であるポリカーボネート部とを有する、請求項8又は9に記載のポリカーボネート-ポリオルガノシロキサン共重合体。
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TWI619744B (zh) | 2018-04-01 |
JP6915941B2 (ja) | 2021-08-11 |
CN105102507B (zh) | 2018-11-13 |
EP2980123B1 (en) | 2019-05-29 |
JP2019031687A (ja) | 2019-02-28 |
JPWO2014157682A1 (ja) | 2017-02-16 |
JP2020147762A (ja) | 2020-09-17 |
EP2980123A4 (en) | 2016-10-19 |
US20160060399A1 (en) | 2016-03-03 |
KR20150139840A (ko) | 2015-12-14 |
US9567442B2 (en) | 2017-02-14 |
KR102149134B1 (ko) | 2020-08-28 |
CN105102507A (zh) | 2015-11-25 |
EP2980123A1 (en) | 2016-02-03 |
TW201443110A (zh) | 2014-11-16 |
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