WO2004044033A1 - ポリカーボネート共重合体、樹脂組成物および成形品 - Google Patents
ポリカーボネート共重合体、樹脂組成物および成形品 Download PDFInfo
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- WO2004044033A1 WO2004044033A1 PCT/JP2003/014458 JP0314458W WO2004044033A1 WO 2004044033 A1 WO2004044033 A1 WO 2004044033A1 JP 0314458 W JP0314458 W JP 0314458W WO 2004044033 A1 WO2004044033 A1 WO 2004044033A1
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- polycarbonate
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- copolymer
- polycarbonate copolymer
- fluorene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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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
- C08G64/04—Aromatic polycarbonates
- C08G64/06—Aromatic polycarbonates not containing aliphatic unsaturation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3437—Six-membered rings condensed with carbocyclic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/357—Six-membered rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08L69/005—Polyester-carbonates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
Definitions
- the present invention relates to a polycarbonate copolymer, a resin composition containing the same, and a molded article. More specifically, the present invention relates to a polycarbonate copolymer excellent in light resistance and heat resistance, a resin composition containing the same, and a molded article formed therefrom.
- the present invention provides a polycarbonate copolymer capable of obtaining a molded article having excellent transparency and providing a molded article having excellent hue stability and excellent light resistance under a high temperature environment.
- the present invention relates to a resin composition containing the same, and a use thereof for a molded article.
- a polycarbonate shelf obtained by reacting bisphenol A with a force precursor is widely used as an engineering plastic in many fields because of its excellent transparency, heat resistance, mechanical properties, and dimensional stability. It is used. In particular, it has many uses as an optical material due to its excellent transparency.Lighting caps and gloves, which are required to have heat resistance in recent years, materials for electronic components, LED lenses, prisms, hard disk carriers, films for liquid crystal substrates for liquid crystal displays, It is also being studied for applications requiring heat resistance, such as retardation films.
- ordinary polycarbonate resin from bisphenol A requires a high-temperature treatment of 180 or more in the process of forming an alignment film or an electrode in the case of a film used for a liquid crystal display, for example.
- poly-polycarbonate In order to improve the heat resistance of poly-polycarbonate, there is generally a method of using bisphenols having a bulky and difficult-to-move structure.
- Various types of poly-polycarbonate have been proposed. Is being planned. Among them, polycarbonates having a specific fluorene skeleton have been proposed (for example, JP-A-6-25401, JP-A-7-52271, JP-A-11-174424) Japanese Patent Publication No. 4 (JP-A-11-306682).
- these polycarbonates having a fluorene skeleton are excellent in heat resistance, but are used for optical and exterior applications because the molded product obtained by molding has a strong yellow hue. In such a case, an improvement in the hue has been required.
- polycarbonates having a fluorene skeleton are extremely susceptible to deterioration after irradiation with ultraviolet rays, and are liable to yellow, which limits their use when used in optical parts and exterior parts.
- a benzotriazole-based or benzophenone-based ultraviolet absorber is added to the resin (Japanese Patent Application Laid-Open No. 11-3).
- Japanese Patent Application Laid-Open No. 58-125 or addition of a benzoxazine-one-one ultraviolet absorber to a resin has been proposed (Japanese Patent Application Laid-Open No. 59-12952).
- the use of these UV absorbers has the effect of preventing the deterioration of UV-induced degradation from ordinary bisphenol A to a certain degree, depending on the type and amount of the absorber. Had.
- the polycarbonate having a fluorene skeleton has a structure in which the initial hue after molding has a yellowish tinge and has a structure that is easily degraded by ultraviolet rays, so
- type and amount There were restrictions on the choice of type and amount. For example, when an ultraviolet absorber is added to a poly-carbonate having a fluorene skeleton, if a large amount of the ultraviolet absorber is added to improve the light resistance depending on the type, poor molding or coloring of a molded product may occur. Or the heat resistance of the resin deteriorated.
- a first object of the present invention is to improve the hue of a polycarbonate having a fluorene skeleton having relatively good heat resistance and birefringence at an early stage of molding.
- a second object of the present invention is to provide a polycarbonate having a fluorene skeleton after molding.
- An object of the present invention is to provide a resin and a resin composition which are less inferior to yellow in a molded article.
- a third object of the present invention is to provide a molded article of a polycarbonate having a fluorene skeleton, which is characterized by a resin and a resin having extremely low deterioration in physical properties and poor color hue both against ultraviolet rays and heat. It is to provide a resin composition.
- An object of the pond of the present invention is to provide a molded article, particularly an optical article, formed from a polycarbonate having a fluorene skeleton and having excellent transparency, birefringence, heat resistance, mechanical properties and dimensional stability. It is in.
- a polycarbonate having a fluorene skeleton is present in a divalent phenol raw material having a fluorene skeleton, or a specific reaction caused by a side reaction during the polymerization reaction of the divalent phenol. It was found that these impurities caused initial hue in resin molding. That is, if fluoren-9-one is present as an impurity in a certain proportion or more in the polycarbonate obtained by the polymerization reaction, the initial hue after molding is reduced, and the molded product is deteriorated in physical properties against ultraviolet rays and yellow. It was found to have a significant effect on the strange.
- polycarbonate having a fluorene-191-one content of not more than a certain ratio has excellent initial hue after molding, and also has heat and heat of a molded article after molding. It was found that the hue change was small even for ultraviolet rays, and it was found that the generation of fluorene-191-one from the fluorene skeleton was further suppressed by the addition of the ultraviolet absorbent. This means that the new generation of fluoren-9-one from the fluorene skeleton against heat and ultraviolet rays is suppressed when the content of fluorene-191 in the resin is below a certain ratio. Considered to be effective available.
- the fluorene skeleton-containing dihydroxy compound (1) represented by the following general formula [1] accounts for 5 to 95 mol% of the total aromatic dihydroxy component
- URN in, ⁇ ⁇ ⁇ 4 are each independently a hydrogen atom, an aromatic group and which may contain a hydrocarbon group having carbon atoms 1 to 9, or a halogen atom. ] and
- R 5- : 8 are each independently a hydrogen atom, a hydrocarbon group which may contain an aromatic group having 1 to 9 carbon atoms, or a hydrogen atom or a logene atom, and W is a single bond, the number of carbon atoms.
- a polycarbonate copolymer (A) comprising an aromatic dihydroxy component, wherein the content of fluoren-9-one contained in the polycarbonate copolymer is 15 ppm or less. Copolymer and this A molded article formed from the copolymer is provided.
- a polyacrylonitrile copolymer (A) having a content of the fluoren-9-one of 15 ppm or less and an ultraviolet absorber (B) 0.01 to 1 part by weight 100 parts by weight of a polyacrylonitrile copolymer (A) having a content of the fluoren-9-one of 15 ppm or less and an ultraviolet absorber (B) 0.01 to 1 part by weight.
- a polycarbonate composition comprising 5 parts by weight and a molded article formed therefrom are provided.
- the fluorene skeleton-containing dihydroxy compound represented by the formula [1] is 5 to 95 mol%, preferably 1 to 5, of the total aromatic dihydroxy component. It is 0 to 90 mol%, and more preferably 15 to 80 mol%. If the amount is less than 5 mol%, the properties of the heat-resistant material which is the object of the present invention are unsatisfactory, which is not preferable.
- the most preferred range is 30 to 75 mol% of the dihydroxy component represented by the above formula [1].
- R 1 ! ⁇ 4 is preferably independently a hydrogen atom or a methyl group.
- 1 and R 2 are a hydrogen atom and R 3 and R 4 are a methyl group. Particularly preferred.
- 9,9-bis (4-hydroxyphenyl) fluorenes examples include 9,9-bis (4-hydroxyphenyl) fluorene, 9,9-bis (4-hydroxy-3-methylphenyl) phthalene, 9-bis (4-hydroxy-13-ethylphenyl) fluorene, 9,9-bis (4-hydroxy-2-methylphenyl) fluorene and the like, among which 9,9-bis (4-hydroxy-3-methylphenyl) Fluorene is preferred.
- the other dihydroxy component represented by the above general formula [2] used in the polycarbonate copolymer of the present invention may be any one which is usually used as a dihydroxy component of an aromatic polycarbonate, such as hydroquinone, Resorcinol, 4,4,1-biphenyl, 1,1-bis (4-hydroxyphenyl) ethane, 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 2,2-bis (4-hydroxy-13-methylphenyl) propane (bisphenol C), 2,2-bis (4-hydroxyphenyl) butane, 1,1-bis (4-hydroxyphenyl) 1-111 Phenylethane, 1,1-bis (4-hydroxyphenyl) cyclohexane (bisphenol Z), 1,1-bis (4-hydroxyphenyl) -1,3,3,5-trimethylcyclohexane, 2,2 —Bis (4-hydroxyphenyl) pentane, 4,4,-(p-phenylenediisopropylidene) diphenol, ⁇ , hi, 1-bis (4
- the polycarbonate copolymer preferably has a specific viscosity of 0.2 to 1.2 at 20 ° C. in a solution of 0.7 g of the polymer dissolved in 100 ml of methylene chloride, and 0.25 to 0.25.
- the range of from to 1.0 is more preferred, and the range of from 0.27 to 0.80 is even more preferred. If the specific viscosity is within the above range, the strength of the molded product or film is sufficiently high.
- the polycarbonate copolymer of the present invention is produced by a reaction means known per se for producing ordinary polycarbonate, for example, a method of reacting an aromatic dihydroxy component with a carbonate precursor such as phosgene or carbonate carbonate. Next, basic means of these manufacturing methods will be briefly described.
- the reaction is usually performed in the presence of an acid binder and a solvent.
- an acid binding agent for example, sodium hydroxide, alkali metal hydroxide such as 7_oxidizing room, or amine compound such as pyridine is used.
- the solvent for example, a halogenated hydrocarbon such as methylene chloride or benzene is used.
- a catalyst such as a tertiary amine or a quaternary ammonium salt can be used to promote the reaction.
- the reaction temperature is usually 0 to 40 ° C, and the reaction time is several minutes to 5 hours.
- Transesterification using diester carbonate as a carbonate precursor is not possible. This is carried out by a method in which, in an active gas atmosphere, a certain amount of an aromatic dihydroxy component is stirred with a carbonic acid diester while heating to distill off the generated alcohol or phenol.
- the reaction temperature varies depending on the boiling point of the alcohol or phenols formed, and is usually in the range of 120 to 300 ° C.
- the reaction is completed under reduced pressure from the beginning while distilling off the alcohol or phenols formed.
- a catalyst usually used in a transesterification reaction to promote the reaction can also be used.
- Examples of the carbonic acid diester used in the transesterification reaction include diphenyl carbonate, dinaphthyl carbonate, bis (diphenyl) carbonate, dimethyl carbonate, getylcapone and dibutyl carbonate. Of these, diphenylcapone is particularly preferred.
- monofunctional phenols which are usually used as a terminal stopper can be used.
- monofunctional phenols are generally used as a terminating agent for controlling the molecular weight, and the obtained aromatic polyponate copolymer is Since the terminal is blocked by a group based on monofunctional phenols, it has better thermal stability than those not.
- Such a monofunctional phenol may be any one used as a terminal terminator for an aromatic polyphenol resin, and is generally a phenol or a lower alkyl-substituted phenol and represented by the following general formula. Monofunctional phenols can be shown.
- A is a hydrogen atom, a linear or branched alkyl group having 1 to 9 carbon atoms or an arylalkyl group, and r is an integer of 1 to 5, preferably 1 to 3.
- Specific examples of the monofunctional phenols include, for example, phenol, p-tert-butylphenol, p-cumylphenol and isooctylphenol. I can do it.
- phenols or benzoic acid chlorides having a long-chain alkyl group or aliphatic ester group as a substituent, or long-chain alkyl carboxylic acid chlorides are used to block the ends of the aromatic polycarbonate copolymer.
- they not only function as a terminator or a molecular weight regulator, but also improve the melt fluidity of the resin and improve the molding process. Not only is it easier, but the physical properties are also improved. Particularly, it has an effect of lowering the water absorption of the resin, and is preferably used.
- X is one R—O—, —R—CO— ⁇ one or —R— ⁇ one CO—, where R is simply A bond or a divalent aliphatic hydrocarbon group having 1 to 10, preferably 1 to 5 carbon atoms, T represents a single bond or a bond similar to the above X, and n represents an integer of 10 to 50 .
- Q represents a halogen atom or a monovalent aliphatic hydrocarbon group having 1 to 10, preferably 1 to 5 carbon atoms
- p represents an integer of 0 to 4
- Y represents 1 to 10 carbon atoms, preferably 1 Represents a divalent aliphatic hydrocarbon group of from 5 to 5
- W 1 is a hydrogen atom, —CO—R 17 , —CO—O—R 18 or R 19 , wherein R 17 , R 18 and R 19 are , Each charcoal number 1-10, preferably 1-5 monovalent fat!
- ⁇ represents a hydrocarbon group, a monovalent alicyclic hydrocarbon group having 4 to 8 carbon atoms, preferably 5 to 6 carbon atoms, or a monovalent aromatic hydrocarbon group having 6 to 15 carbon atoms, preferably 6 to 12 carbon atoms.
- substituted phenols of [Ia] and [I-b] preferred are the substituted phenols of [Ia] and [I-b].
- substituted phenols of [Ia] those having n of 10 to 30, especially 10 to 26 are preferable.
- Specific examples thereof include decyl phenol, dodecyl phenol, tetradecyl phenol, and hexadecyl.
- examples thereof include phenol, octyl decylphenol, eicosylphenol, docosylphenol, and triacontylphenol.
- substituted phenols of [Ib] compounds in which X is -R-CO-0- and R is a single bond are suitable, and those in which n is 10 to 30, especially 10 to 26 are preferable.
- Preferred examples thereof include decyl hydroxybenzoate, dodecyl hydroxybenzoate, tetradecyl hydroxybenzoate, hexadecyl hydroxybenzoate, eicosyl hydroxybenzoate, docosyl hydroxybenzoate and tricontyl hydroxybenzoate. No.
- the position of the substituent is generally p-position or 0-position, and a mixture of both is preferable. Is preferred.
- the monofunctional phenols are desirably introduced into at least 5 mol%, preferably at least 10 mol%, based on all terminals of the obtained polycarbonate copolymer. May be used alone or in combination of two or more.
- the polycarbonate copolymer of the present invention may be a polyester carbonate obtained by copolymerizing an aromatic dicarboxylic acid, for example, terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid or a derivative thereof, as long as the spirit of the present invention is not impaired.
- a branched polycarbonate obtained by copolymerizing a small amount of a trifunctional compound may be used.
- the glass transition point of the poly-monoponate copolymer of the present invention is 150 ° C. or higher, more preferably 160 ° C. or higher, and in the range of 16 ° C. to 210 ° C. Is even more preferred.
- the polycarbonate copolymer of the present invention has a fluorene-9-one content of 15 ppm or less, more preferably 5 ppm or less. If the content of fluoren-9-one exceeds 15 ppm, an aromatic polycarbonate copolymer having a desired excellent hue and an extremely small b value cannot be obtained, which is not preferable. Fluoren-9-one also has a function of inducing color hiding when the aromatic polycarbonate copolymer is brought into a solution state or a molten state, which indicates that the fluorene-9-one is contained. The amount should not exceed 15 ppm.
- the aromatic polycarbonate copolymer of the present invention can be produced by using a conventional aromatic polycarbonate resin as a reaction means known per se, for example, a carbonate precursor such as phosgene or a carbonic acid diester is added to the aromatic dihydroxy compound. It is manufactured by a method of reacting substances.
- a carbonate precursor such as phosgene or a carbonic acid diester
- Fluorone-one-one as an impurity in the polycarbonate copolymer is a compound represented by the following chemical formula.
- the fluoren-9-one is an impurity mixed or generated from the fluorene skeleton-containing dihydroxy compound [I], which is a raw material for obtaining a polycarbonate copolymer. That is, fluoren-9-one is a compound that is contained as an impurity in the dihydroxy compound [I] as a raw material or is by-produced from the compound [I] during polymerization.
- the dihydroxy compound [I] as a raw material should be one having a fluoren-9-one content as small as possible.
- the upper limit of the content depends on the copolymerization ratio of the dihydroxy compound [I] and the polymerization conditions.
- a compound having a fluoren-9-one content of 20 ppm or less, preferably 10 ppm or less, particularly preferably 5 ppm or less should be used. The lower the content of fluoren-9-one, the better. However, it is unavoidable that a small amount of fluoren-9-one is mixed in from the raw materials of the polycarbonate copolymer and by-produced during heat molding. Therefore, a content of about 0.1 ppm or more cannot be avoided.
- the reaction using, for example, phosgene as a carbonate precursor usually proceeds in the presence of an acid binder and a solvent.
- an acid binding agent for example, sodium hydroxide, alkali metal hydroxide such as hydroxylating hydroxide, or amine compound such as pyridine is used.
- the solvent for example, a halogenated hydrocarbon such as methylene chloride or benzene is used.
- a catalyst such as a tertiary amine or a quaternary ammonium salt can be used to promote the reaction.
- the reaction temperature is usually 0 to 40, and the reaction time is several minutes to 5 hours.
- the time from the complete dissolution of the aromatic dihydroxy compound in the acid binder and the solvent to the start of the reaction with the carbonate precursor is preferably within 1 hour, and within 30 minutes. Is more preferred.
- the time until the start of the reaction exceeds 1 hour, the fluorene skeleton-containing dihydroxy compound [I] is partially decomposed, and as a result, fluorene-191-one is by-produced, so that the aromatic content of the present invention is low. There is a possibility that the aromatic polycarbonate copolymer cannot be obtained.
- an aromatic dihydroxy compound having a fluoren-9-one content of 10 ppm or less, preferably 5 ppm or less can be used.
- the time until the start of the reaction is preferably within 5 minutes.
- Fluorene is to substantially eliminate molecular oxygen. This is a method of performing a polymerization reaction in the presence.
- substantially in the absence of molecular oxygen means that no molecular oxygen is present in the gas phase and the liquid phase in the polymerization reaction system. It means 5 ppm or less, preferably 0.2 ppm or less, more preferably 0.1 ppm or less.
- a method of blowing nitrogen gas into the polymerization reaction system or a method of adding a reducing agent such as hydrosulfite is employed.
- a method of sealing the reaction vessel with nitrogen gas is also effective to prevent intrusion of molecular oxygen. Further, it is also effective to carry out the purification step after the polymerization reaction in a nitrogen gas atmosphere in order to suppress the by-product of fluoren-9-one.
- a poly-carbonate having a fluorene skeleton has improved heat resistance and rigidity.However, this poly-carbonate can be easily colored by a polymerization reaction and can be formed by molding. Coloring occurs and the hue of the molded product is yellowish. Therefore, there has been a strong demand for a molded article of a polycarbonate having a fluorene skeleton to have an improved hue for its optical use.
- the above-mentioned polycarbonate copolymer of the present invention has an extremely small content of fluorene-191-one as an impurity and has an improved hue.
- the molded article made of the polycarbonate copolymer of the present invention has a very low yellow tint, that is, the value of the b value described below is extremely small, and it is expected that the utility value for optical use will increase.
- a solution obtained by dissolving 5 g of a polycarbonate copolymer having a fluorene skeleton in 50 m1 of methylene chloride in a light-shielded state has a b value of 5.0 or less measured at an optical path length of 3 Omm. Is provided.
- the b value of the polycarbonate copolymer is a measure of the yellowness of the hue, and the smaller the value is, the weaker the yellowness is.
- the b value of the polycarbonate copolymer of the present invention is 5.0 or less, preferably 4.5 or less, and most preferably 3.5 or less. This b value can be achieved by reducing the content of fluoren-9-one in the polycarbonate copolymer to 15 ppm or less.
- sulfur or sulfur compounds as impurities in the copolymer may be used. The content is not more than a certain amount.
- polycarbonate copolymers (a) and (b) are provided.
- condition (a) or (b) may be satisfied, but satisfying both conditions (a) and (b) further reduces the b value of the polycarbonate copolymer molded article.
- satisfying the condition (a) or (b) the heat resistance and rigidity of the copolymer become more excellent.
- the phosgene used for the production of the polycarbonate copolymer preferably has a sulfur compound content of 5 ppm or less.
- the sulfur compound content is more preferably 1 p pm or less, more preferably 0.5 ppm or less, and most preferably 0.5 ppm or less.
- the carbon monoxide used for the production of phosgene has a sulfur compound content of 10 ppm or less, preferably 5 ppm or less, more preferably 0.5 ppm or less.
- Carbon monoxide having a sulfur compound of 10 ppm or less converts carbon monoxide obtained by reacting a coal with oxygen to, for example, metal oxides such as Cu, Cr, V, and Mo, and Z.
- metal oxides such as Cu, Cr, V, and Mo, and Z.
- it can be obtained by a method of bringing into contact with activated carbon or activated alumina to which a metal salt is attached, followed by contact with an aqueous solution of sodium hydroxide, a method of contacting with an aqueous solution of potassium isocyanate, and then contacting with activated alumina.
- the polycarbonate copolymer satisfying the above condition (b) has a chlorine content of 10 ppm or less based on the macroformat group at the polymer terminal and a hydroxyl group content of 250 ppm or less at the polymer terminal.
- the amount of chlorine based on the chlorophomate group at the terminal of the polymer is preferably 5 ppm or less, more preferably 2 ppm or less.
- the amount of hydroxyl groups at one terminal of the polymer is preferably at most 200 ppm, more preferably at most 100 ppm.
- the amount of chlorine atoms based on the chromate format group at the polymer end exceeds 1 Oppm and the amount of hydroxyl groups at the polymer end exceeds 250 ppm, the hue of the polycarbonate copolymer deteriorates and metals are reduced. It is not preferable because it causes corrosion and accelerates the deterioration of the polycarbonate copolymer.
- the polycarbonate copolymer (A) of the present invention having a fluorene-9-one content of 15 ppm or less has excellent hue of the molded article immediately after molding, and further has a molded article. Has little deterioration or yellowing even with ultraviolet rays.
- a molded article from the composition obtained by adding the ultraviolet absorbent (B) to the polycarbonate copolymer (A) has a fluorene structure in the polycarbonate copolymer (A). It was found that the generation of fluoren-9-one from the product was suppressed, and the deterioration and yellowing of the molded product were further suppressed.
- a polyacrylonitrile copolymer (A) having a fluoren-9-one content of 15 ppm or less and an ultraviolet absorber (B) 0.0 0:! ⁇ 5 parts by weight of a polycarbonate composition and formed therefrom Molded articles are also provided.
- the ultraviolet absorber to be added to the polycarbonate composition is desirably one that can be uniformly dispersed in the polycarbonate resin and is stable under molding conditions. In particular, what is necessary is just to mix
- a benzotriazole-based ultraviolet absorber As the ultraviolet absorber used in the present invention, a benzotriazole-based ultraviolet absorber, a triazine-based ultraviolet absorber, a benzoxazine-based ultraviolet absorber or a benzophenone-based ultraviolet absorber is used.
- benzotriazole-based ultraviolet absorbers examples include 2- (2'-hydroxy-1'-methylphenyl) benzotriazole, 2- (2, -hydroxy-3,-(3 ", 4", 5 ", 6" —Tetrahydrophthalimidomethyl) -1,5-methylphenyl) benzotriazole, 2- (2, -hydroxy_3 ′, 5′—di-tert-butylphenyl) benzotriazole, 2- (2, -hydroxy-5, —tert— Octylphenyl) benzotriazole, 2- (3'-tert-butyl-5,1-methyl-1,2-hydroxyphenyl) -5-chlorobenzotriazole, 2,2, -methylenebis (4- (1, 1,3,3-tetramethylbutyl) -6- (2H-benzotriazo-2-yl) phenol), 2- (2'-hydroxy-3,5,5-bis (, ⁇ -dimethylbenzyl) phenyl ) — 2 ⁇ —benzo Lyazo
- Triazine-based UV absorbers include 2- (4,6-diphenyl-1,3,5-triazine-2-yl) -5-[(hexyl) oxy] phenol and 7 — ⁇ [4—toxie 6- (Getylamino) 1-S-triazine-1-yl] -amino ⁇ -3-phenylcoumarin is preferred.
- Benzoxazine-based UV absorbers include 2-methyl-3,1_benzoxazine-4-ion, 2-butyl-3,1-benzoxazine-14-one, 21-phenyl-3,1-benzoxazine-14- On, 2 _ (1- or 2-naphthyl) —3,1 Benzoxazine—4—On, 2— (4-biphenyl) -3,1—Benzoxazine—4 On, 2,2 ′ Bis ( 3,1 Benzoxazine-1 4-one), 2,2,1 p-Phenylenebis (3,1 Benzoxazine 1-4-one, 2,2,1 m-Phenylenebis (3,1-benzoxazine) 1,4-one), 2,2 '-(4,4, diphenylene) bis (3,1_benzobenzoxazine-14-one), 2,2,-(2,6 or 1,5-naphthalene) bis (3, 1-benzoxazine—4—one
- Benzophenone-based UV absorbers include 2-hydroxy-4-methoxybenzozophenone, 2-hydroxy-14-n-octoxybenzophenone, 2-hydroxy-14-methoxy-1,2, and lipoxybenzo. Examples include phenone, 2,4-dihydroxybenzophenone, and 2,2'-dihydroxy-14-methoxybenzophenone, and among them, 2-hydroxy-14-n-octoxybenzophenone is preferred. These ultraviolet absorbers may be used alone or in combination of two or more.
- the ultraviolet absorber (B) blended in the polycarbonate composition of the present invention has an absorbance at 36 Onm (A 360 nm) measured at an optical path length of 1 cm when it is dissolved in methylene chloride at a concentration of 1 Omg / L. ) Is 0.5 or more (preferably 0.6 or more), and an ultraviolet absorber having an absorbance at 400 nm ( A400 nm ) of 0.01 or less is particularly preferable.
- benzoxazine-based ultraviolet absorbers are preferred, and benzoxazine-based ultraviolet absorbers represented by the following general formula [3] are particularly preferred.
- R 9 to R each independently represent a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms which may contain an aromatic hydrocarbon group or an octogen atom, and Ar represents a carbon atom having 6 to 15 carbon atoms.
- the ultraviolet absorbent (B) When the ultraviolet absorbent (B) is blended with the polycarbonate copolymer, it may lower the glass transition temperature of the copolymer. Therefore, it is desirable that the ultraviolet absorber (B) does not significantly lower the glass transition temperature of the copolymer. That is, the glass transition temperature of the aromatic polycarbonate resin composition in which 2 parts by weight of the ultraviolet absorber (B) was added to 100 parts by weight of the polycarbonate copolymer (A) was T g ′, and the ultraviolet absorber was added. When the glass transition temperature of an aromatic polycarbonate shelf is T g
- the ultraviolet absorber (B) is used in an amount of 0.01 to 5.0 parts by weight, preferably 0.02 to 3.0 parts by weight, based on 100 parts by weight of the polycarbonate copolymer (A). More preferably, it is 0.05 to 2.5 parts by weight.
- the polycarbonate copolymer and the polycarbonate composition of the present invention can be blended with various additives used for modifying the physical properties of the molded product of polycarbonate or improving the moldability.
- additives include heat stabilizers, oxidation stabilizers, release agents, bluing agents, coloring agents, antistatic agents, lubricants, light diffusing agents, fillers, and the like.
- other polycarbonates and other thermoplastic resins can be blended in a small proportion as long as the object of the present invention is not impaired. Specific examples of the heat stabilizer, the antioxidant, the release agent and the bluing agent among these additives will be described below.
- At least one phosphorus compound selected from the group consisting of phosphoric acid, phosphorous acid, phosphonic acid, phosphonous acid and esters thereof is added to a polycarbonate copolymer as a heat stabilizer. 0.0001 to 0.05% by weight based on the copolymer. The incorporation of this phosphorus compound improves the thermal stability of such a polycarbonate copolymer and prevents a decrease in molecular weight and deterioration of hue during molding.
- the phosphorus compound is at least one phosphorus compound selected from the group consisting of phosphoric acid, phosphorous acid, phosphonic acid, phosphonous acid and esters thereof, and is preferably represented by the following general formulas [4] to [7]. At least one phosphorus compound selected from the group consisting of:
- R 20 to R 31 each independently represent a hydrogen atom, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, dodecyl
- the two alkyl groups When two alkyl groups are present in one compound, the two alkyl groups may be bonded to each other to form a ring.
- Examples of the phosphorus compound represented by the above formula [4] include triphenylphosphite, trisnonylphenylphosphite, tris (2,4-di-tert-butylphenyl) phosphite, tridecylphosphite and trioctyl.
- Examples of the phosphorus compound represented by the above formula [5] include tributyl phosphate, trimethyl phosphate, trimethyl phosphate, triphenyl phosphate, and triethyl phosphate. Phosphate, diphenyl monoorthoxenyl phosphate, dibutyl phosphate, octyl phosphate, diisopropyl phosphate and the like are mentioned.
- distearyl pentaerythritol diphosphate, triethyl phosphate, dimethyl benzenephosphonate, and bis (2,4-dicumylphenyl) pentaerythritol diphosphate are preferably used.
- the amount of the phosphorus ligated compound is from 0.0001 to 0.05% by weight based on the weight of the polyacrylonitrile copolymer, and from 0.005 to 0.02% by weight. Is preferable, and 0.001 to 0.01% by weight is particularly preferable.
- a benzofuranone-based compound can be used as a heat stabilizer in addition to the phosphorus compound.
- benzofuranone-based compounds include 5,7-di-t-butyl-13- (3,4-dimethylphenyl) -3H-benzofurano-12-one and 5,7-di-t-butyl-13. — (2,3-dimethylphenyl) -1 3H-benzofurano-2-one. These compounds may be used alone or in combination of two or more.
- the compounding amount of these compounds is 0.0 0.001 to the polycarbonate copolymer. -5% by weight, preferably 0.001-0.1% by weight, particularly preferably 0.005-0.05% by weight.
- an antioxidant generally known for the purpose of preventing oxidation can be added.
- examples thereof include phenolic antioxidants, and specifically, for example, triethylene glycol-bis [3- (3-tert-butyl-5-methyl-14-hydroxyphenyl) propionate], 1,6 —Hexanediol-bis [3- (3,5-di-tert-butyl-14-hydroxyphenyl) propionate], pentaerythritol-tetrakis [3- (3,5-di-tert-butyl-1-hydroxyphenyl) Propionate], octadecyl-1- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1,3,5-trimethy J-ray 2,4,6-tris (3,5-g tert-butyl-4-hydroxybenzyl) benzene, N, N-hexamethylenepis (3,5-di-tert)
- a higher fatty acid ester of a monohydric or polyhydric alcohol can be added to the aromatic polycarbonate copolymer of the present invention, if necessary, as a release agent.
- the higher fatty acid ester is preferably a partial ester or a whole ester of a monovalent or polyvalent alcohol having 1 to 20 carbon atoms and a saturated fatty acid having 10 to 30 carbon atoms.
- Examples of the partial or total ester of a monohydric or polyhydric alcohol and a saturated fatty acid include stearic acid monoglyceride and stearic acid.
- Monosorbitate arsenate monoglyceride behenate, erythritol monostearate, pen erythritol tetrastearate, propylene glycol monostearate, stearyl stearate, palmityl palmitate, butyl stearate, methyl lau And isopropyl palmitate and 2-ethylhexyl stearate.
- monoglyceride stearate and pentaerythritol tetrastearate are preferably used.
- the amount of the ester of the alcohol and the higher fatty acid is preferably 0.01 to 2% by weight, more preferably 0.015 to 0.5% by weight, based on the aromatic polycarbonate copolymer. More preferably, the range is from 0.2 to 0.2% by weight. When the compounding amount is within this range, the releasing property is excellent, and the releasing agent is preferable because it does not migrate and adhere to the metal surface.
- a bluing agent may be blended in the polyacrylonitrile copolymer of the present invention.
- a bluing agent include Macguchi Rex Piolet manufactured by Bayer, and Mitsubishi Chemical Corporation. Dial Resin Violet, Dial Resin Blue, Terazol Bull 1 manufactured by Sando Co., Ltd., and the like, and the most preferable one is Macguchi Rex Violet.
- These bluing agents are preferably incorporated into the polycarbonate copolymer at a concentration of 0.1 to 3 ppm, more preferably 0.3 to 2.5 ppm, most preferably 0.5 to 2.2 ppm. 'Will be.
- composition of the present invention obtained by blending the polycarbonate copolymer (A) with an ultraviolet absorber can exert an effect of suppressing the by-product of fluoren-9-one in the polycarbonate copolymer (A).
- the molded article from the product has strong resistance to thermal deterioration and yellowing.
- the effect of the ultraviolet absorber (B) is remarkably achieved by blending it in the polycarbonate copolymer densely, but the ultraviolet absorber (B) is a molded article of the polycarbonate copolymer. It has been found that the effect can also be obtained by coating the surface of the surface as a skin layer.
- a polymer containing less than 15 ppm of fluorene-9-one there is also provided a molded article (referred to as coated molded article) in which the surface of the molded article of the copolymer (A) is coated with a polymer layer containing the ultraviolet absorbent (B).
- the thickness of the polymer layer in this coated molded article is suitably from 1.0 m to 50 m, and preferably from 2.0 m to 20 m.
- the polymer layer forming the coating layer should contain 0.5 to 40 parts by weight, preferably 1 to 35 parts by weight, particularly preferably 5 to 30 parts by weight of the ultraviolet absorbent (B) per 100 parts by weight of the polymer.
- Examples of the method of coating the surface of the molded article with the polymer layer include a method of immersing the molded article in a solution containing a polymer and an ultraviolet absorber, and a method of coating this solution on the surface of the molded article.
- the polymer layer to be coated is preferably transparent, and therefore, a polymer having transparency is used. Such polymers include acrylic copolymers, polyolefins, polyesters, and the like.
- the solvent for preparing the polymer solution may be any solvent capable of dissolving the polymer, and examples thereof include alcohols, ketones, aromatic hydrocarbons and aliphatic hydrocarbons.
- a method for obtaining a molded article from the polycarbonate copolymer (A) of the present invention and its composition injection molding, compression molding, injection compression molding, extrusion molding, blow molding, and the like are used.
- a method which is excellent in thickness uniformity and does not cause optical defects is preferable, and examples thereof include a solvent casting method, a melt extrusion method and a force rendering method.
- composition of the polycarbonate copolymer of the present invention can be applied to a 2 mm-thick molded plate made of the polycarbonate copolymer (A) when not containing the ultraviolet absorber (B) at an irradiation intensity of 300 to 400 nm of 15 mWZ cm 2.
- the degree of change in the degree of yellowness (YI) after irradiation with the mercury lamp for 7 days is ⁇ 0 , and the polycarbonate copolymer composition obtained when a predetermined amount of the ultraviolet absorber ( ⁇ ) used in the present invention is added.
- the effect of the ultraviolet absorber in the composition of the present invention is large, and the polycarbonate copolymer composition shows good light resistance.
- Molded products manufactured by this method are used for various applications that require heat resistance, such as glazing, automotive lamp lenses, lamp covers, optical lenses, prisms, OHP sheets, nameplates, indicator lamps, optical waveguides, light guide plates, and diffusion. Used for plates and the like.
- the film produced by such a method is suitably used as a bracell substrate or a retardation film for flat panel display substrates.
- the bracel substrate is used in an unstretched state, in order to use it as a retardation film, it is stretched and oriented in at least a uniaxial direction so as to have optimal birefringence characteristics to form a retardation film.
- parts means “parts by weight”.
- the evaluation was performed by the following method.
- a sample (5 Omg) was dissolved in 5 ml of a chloroform-form solvent, and GPC analysis was performed at a wavelength of 254 nm with a chromate-form solvent using TSK-GEL G2000H and G3000H columns manufactured by Tosoichi Co., Ltd. Specifically, GPC measurement was performed on quantified fluoren-1-one in the data in advance, and a correlation equation was created for the peak area ratio and content, which was defined as the calibration curve.
- the formula is represented by the following formula.
- a 200 m thick film obtained by casting the polymer solution on a glass plate was measured by a transmission method using a Hitachi U-3000 spectrophotometer.
- 0.7 g of the polymer was dissolved in 100 ml of methylene chloride and measured at a temperature of 20 ° C.
- the measurement was performed at a heating rate of 2 O ⁇ / min under a nitrogen stream of 40 mL / min using a 2910 type DSC manufactured by T.A. Instrument Japan Co., Ltd.
- the yellowness (YI) of the molded sample plate having a thickness of 2 mm was measured by a transmission method using a spectral colorimeter SE-2000 (light source: C / 2) manufactured by Nippon Denshoku Co., Ltd.
- the sample plate molded 2 mm thickness without changing the irradiation surface, a transparent mercury lamp of 400 W to the light source, UV irradiation intensity of 300 ⁇ 400 nm 15 mWZ cm 2, 7 days at a test temperature 80 ° C
- UV irradiation intensity 300 ⁇ 400 nm 15 mWZ cm 2, 7 days at a test temperature 80 ° C
- the test piece was taken out, and the change in yellowness (YI) before and after the test was evaluated by a transmission method using a spectrocolorimeter SE-2000 (light source: C / 2) manufactured by Nippon Denshoku Co., Ltd.
- ⁇ I shows the test results using a sample plate made of an aromatic polycarbonate resin to which no ultraviolet absorber was added.
- the test results obtained using a molded sample plate made of an aromatic polycarbonate resin composition to which a specified amount of an ultraviolet absorber has been added are shown as ⁇ I!
- R YI degree of the light resistance improvement effect
- the UV spectrum was measured using a spectrophotometer manufactured by Hitachi, Ltd., and converted from the absorbance at 315 nm.
- Nomura Chemical's D e V e 1 osi 1 ⁇ DS-MG column at 40 ° C, 28 0 C using a mixture of acetonitrile / acetonitrile with 0.2% aqueous acetic acid HP LC analysis was performed with a gradient program at nm. The measurement was carried out by injecting a solution of 3 mg of a sample in 1 Oml of acetonitrile by injecting 1 Q i 1, and the ratio of the peak area of the main component to the total peak area was indicated by%.
- a 100 nm aluminum film was deposited on a 50 x 90 x 2 mm sample plate using a vacuum evaporation system manufactured by Daia Vacuum Engineering Co., Ltd., and left in a 160 "C atmosphere for 24 hours. X was observed when the aluminum deposited film was clouded, and ⁇ was observed when there was no change.
- Specimens with a thickness of 1. Omm, a width of 10 mm, and a length of 2 Omm prepared by injection molding were dried under reduced pressure at 120 for 10 hours.
- the test piece was processed in a reflow furnace (TPF-20L, manufactured by Asahi Engineering Co., Ltd.) of the combined use of infrared rays and hot air.
- the heating temperature pattern was set so that the peak temperature was 250 ° C for 5 seconds after heating at 150 ° C for 60 seconds, and the presence or absence of a change in the hue of the molded piece after one treatment with the riff was visually evaluated. . Those with no change in hue were marked with “ ⁇ ”, and those with change were marked with “X”. (20) b value of monomer solution:
- a 10 g sample was dissolved in 50 ml of ethanol, and measured in a sample tube with a light path length of 30 mm using a color difference meter 30 OA of Nippon Denshoku Co., Ltd.
- a test piece of 1 to 2 mm was assembled, and the brightness (cd / m 2 ) at 9 points of the test piece was measured with a brightness meter BM-7 manufactured by Topcon Corporation, and the average value was taken as the average brightness.
- the ratio of the minimum luminance to the maximum luminance in the luminance measurement results was defined as luminance unevenness.
- Brightness unevenness (%) (minimum brightness Z maximum brightness) X 100
- a sample having no change in luminance unevenness when used in a high-temperature atmosphere of 140 ° C. was marked with “ ⁇ ”, and a sample with a change ( ⁇ ) was marked with “X”.
- the specimen which did not deform even when the test piece was left in an atmosphere of 160 for 24 hours was designated as ⁇ , and the specimen having deformation was designated as X.
- a light guide plate test piece of 100 mm long, 100 mm wide and 1 to 2 mm thick is incorporated into the backlight unit, and a cold cathode tube is illuminated from the edge, and the brightness (cd / m 2 ) of 9 points on the test piece is measured by Topcon Corporation.
- the brightness was measured with a luminance meter BM-7 manufactured by FUJIFILM Corporation, and the average value was taken as the average brightness.
- BPA 2,2-bis (4-hydroxyphenyl) propane
- 178,400 parts of methylene chloride were added, and 22,810 parts of phosgene was blown in with stirring at 15 to 25 for 60 minutes.
- a solution of 222.2 parts of P-tert-butylphenol in 3,300 parts of methylene chloride and 13,200 parts of a 25% aqueous sodium hydroxide solution were added.
- 40 parts of triethylamine were added. The reaction was completed by stirring at 28 to 33 ° C for 1 hour.
- the product was diluted with methylene chloride, washed with water, then acidified with hydrochloric acid, and washed with water.
- the methylene chloride phase was concentrated and dehydrated.
- the polymer obtained by removing the solvent from this solution had a molar ratio of structural units of biscresylfluorene to bisphenol A of 70:30 (polymer yield 97) o.
- the intrinsic viscosity of this polymer is 0.675 and Tg is 227.
- the content of fluoren-9-one in the obtained polymer was 2.3 ppm.
- This polyphenol solution was cast at 20 ° C on a stainless steel plate moving from a T-die, and the temperature was gradually increased to evaporate methylene chloride. The methylene was removed to obtain a film having a thickness of 200 m. The casting film forming property was good, and the b value of this film was 0.6.
- BPM bisphenol A
- bisphenol M bisphenol M 17089 parts by weight
- a 20% solution of a polymer having a molar ratio of structural units of biscresol-fluorene and bisphenol M of 70:30 was obtained in the same manner as in Example 1 except that the polymer was used (polymer yield: 97%).
- the intrinsic viscosity of this polymer was 0.671, and the Tg was 209 ° C.
- the content of fluoren-9-one contained in the obtained polymer was 2.4 ppm.
- a 200 m-thick film was obtained from this polyphenol solution in the same manner as in Example 1. The casting film formability was good, and the b value of this film was 0.6.
- the poly-polyponate obtained is bis-cresol-fluorene and bis-fluorene.
- the molar ratio of the structural unit to phenol A was 70:30 (polymer yield: 97%).
- O The intrinsic viscosity of this polymer was 0.674, and Tg was 226 ° C.
- the content of fluorene-191-one contained in the obtained polymer was 13 ppm.
- a film having a thickness of 200 m was obtained from this polycarbonate solution in the same manner as in Example 1. The b value of this film was 0.9.
- a 20% polycarbonate solution (polymer yield 95%) was obtained in the same manner as in Example 1 except that the reaction was carried out while blowing nitrogen.
- This polymer had an intrinsic viscosity of 0.672 and a Tg of 225 ° C.
- the content of fluoren-9-one in the obtained polymer was 1.5 ppm.
- a film having a thickness of 200 m was obtained in the same manner as in Example 1.
- the b value of this film was 0.3.
- Example 2 After dissolving biscresol fluorene, bisphenol A and hydrosulfite in Example 1, two and a half hours later, methylene chloride was added in the same manner as in Example 1 except that methylene chloride was added. A polymer yield of 94%) was obtained. This polymer had an intrinsic viscosity of 0.669 and a Tg of 22. Further, the content of fluorene-191-one contained in the obtained polymer was 34 ppm. A film having a thickness of 200 m was obtained from this polycarbonate solution in the same manner as in Example 1. The b value of this film was 1.6.
- Example 3 a 20% polycarbonate solution (polymer) was prepared in the same manner as in Example 3 except that biscresol fluorene, bisphenol M and hydrosulfite were dissolved, and then methylene chloride was added after a lapse of at least 2.5 hours. 95%).
- the intrinsic viscosity of this polymer was 0.668, and Tg was 209. Further, the content of fluoren-9-one contained in the obtained polymer was 41 ppm.
- a film having a thickness of 20 Om was obtained from this polycarbonate solution in the same manner as in Example 3. The b value of this film was 1.9. Comparative Example 3
- a 20% polycarbonate solution (as in Example 4) except that the time from the complete dissolution of the aromatic dihydroxy compound in the acid binder and the solvent to the start of the reaction with the lithium precursor was 30 minutes. A polymer yield of 97%) was obtained. This polymer had an intrinsic viscosity of 0.673 and a Tg of 225 ° C. The content of fluoren-9-one in the obtained polymer was 3 lppm. A film having a thickness of 200 m was obtained in the same manner as in Example 4 using this polycarbonate solution. The b value of this film was 1.6.
- Example 2 Using the same reactor as in Example 1, except that biscresol-fluorene having a fluorene-191-one content of 35 ppm was used, a 20% polypropionate solution ( A polymer yield of 95%) was obtained. This polymer had an intrinsic viscosity of 0.674 and a Tg of 226. Further, the content of fluoren-9-one in the obtained polymer was 67 ppm. Using this polycarbonate solution, a film having a thickness of 200 m was obtained in the same manner as in Example 1. The b value of this film was 2.2.
- Example 1 70 30 0 227 0.675 2.1 2.3 0.6 Example 2 60 40 0 218 0.709 2.1 2.1 0.5 Example 3 70 0 30 209 0.671 2.1 2.4 0.6 Example 4 70 30 0 226 0.674 17.0 13.0 0.9 Example 5 70 30 0 225 0.672 2.1 1.0.5 0.3 Comparative example 1 70 30 0 223 0.669 2.1 34.0 1.6 Comparative example 2 70 0 30 209 0.668 2.1 41 0 1.9 Comparative example 3 70 30 0 225 0.673 17.0 31. 0 1.6 Comparative example 4 70 30 0 226 0.674 35.0 67.0 2.2
- a reactor equipped with a thermometer, stirrer and reflux condenser was charged with 21,540 parts of ion-exchanged water and 4,230 parts of a 48% aqueous sodium hydroxide solution.
- Bisphenol Al 949 parts, was fluorene-91 on the above HP LC analysis. After dissolving 3,231 parts of biscresol fluorene having a content of 2.1 ppm and 10.9 parts of hydrosulfite, 20 minutes later, 14,530 parts of methylene chloride were added, and the mixture was stirred for 16 to 20 minutes. Injected 2,200 parts of phosgene in 60 minutes.
- the light yellow polymer (abbreviated as "EX-PC2") having a molar ratio of bisphenol A to biscresol fluorene of 50:50 in molar ratio of 0.280 and a Tg of 198 ° C. 5, 500 parts were obtained (95% yield).
- the content of fluorene-1-one in the obtained polymer was 2. Oppm.
- UV absorber (UVA) UV absorber
- the polymer whose molar ratio of biscresol fluorene to bisphenol A is 20:80 is a molar ratio. was obtained (polymer yield: 97%).
- Glass transition temperature (Tg) was 165 and viscosity average molecular weight (Mv) was 18,500.
- the content of fluorene-9-one in the obtained polymer was 1.5 ppm.
- This polymer had a sulfur content of 12 ppm as sulfur atoms.
- 0.1% by weight of “Irgafosl 68” manufactured by Ciba Specialty Chemicals was added to the polymer, and the mixture was extruded using a single-screw extruder at a cylinder temperature of 300 ° C, pelletized, and injected.
- the sulfur content of this polymer was 11 ppm as a sulfur atom.
- 0.1% by weight of Irgaf os l68 manufactured by Chipa Specialty Chemicals was added to this polymer, and the mixture was extruded with a 30 ⁇ single screw. Extruded at a cylinder temperature of 300 ° C using a press machine, pelletized, and plasticized at a cylinder temperature of 340 ° C using an injection molding machine (Nippon Steel Works Co., Ltd .: Nikko Anchor V-17-65 type). A test piece having a thickness of 2 mm was obtained. No sulfur odor was felt at this time. The b value of the test piece was as good as 1.5. Table 4 shows the results.
- the sulfur content of this polymer was 15 Pm as a sulfur atom.
- 0.1% by weight of “Irg a ⁇ os 168” manufactured by Chipa Specialty Chemicals was added to the polymer, and the mixture was fed into a cylinder using a 30 ⁇ single screw extruder. Extruded at a temperature of 300 ° C to form pellets, plasticized using an injection molding machine (Nippon Steel Works Co., Ltd .: Nippon Steel Anchor V-1-17-65 type) at a cylinder temperature of 340 ° C, and then thickness. A 2 mm specimen was obtained. No sulfur odor was felt at this time. The b value of the test piece was 1.6, which was good. Table 4 shows the results. Table 4
- the polystyrene resin obtained by removing the solvent from this solution had a molar ratio of structural units of biscresol fluorene to bisphenol A of 40:60 (polymer yield). 97%).
- the intrinsic viscosity of this polymer was 0.312 and Tg was 189 ° C.
- the content of fluorene-1-one in the obtained polymer was 2.0 ppm.
- the amount of trace chlorine based on the chromate format group in the polymer was 0.3 ppm, and the amount of hydroxyl group was 70.7 ppm.
- the obtained molded product had a total light transmittance of 89% and a b value of 1.4.
- Aluminum was vapor-deposited on the molded product, heat-treated, and the surface state was visually evaluated. As a result, there was no fogging. Also, there was no change in the hue of the molded piece after the reflow treatment. Table 5 shows the results.
- the specific viscosity of this polymer was 0.262 and the Tg was 215 ° C.
- the content of fluoren-9-one in the obtained polymer was 2.3 ppm.
- This polymer was pelletized in the same manner as in Example 13 and the results of molding evaluation are shown in Table 5.
- Biscresol was prepared in the same manner as in Example 13 except that the purity of biscresol fluorene having a fluoren-9-one content of 2.1 ppm in the HP LC analysis of Example 13 was 99.2%.
- a polymer was obtained in which the ratio of fluorene to bisphenol A was 40:60 in molar ratio. The specific viscosity of this polymer was 0.296 and Tg was 189 ° C. Fluorene contained in the obtained polymer-9-one-one Was 2. Oppm.
- This polymer was pelletized in the same manner as in Example 13 and the results of molding evaluation are shown in Table 5.
- Example 13 99.9 40 60 0.312 189 0 .3 70.7 89 1. ⁇ ⁇
- Example 1 99.9 70 30 0.262 215 0.6.57.7 89 2.3 ⁇ ⁇
- Example 15 99.2 40 60 0.296 189 5.0 103.2 89 1.6 ⁇ ⁇
- the polycarbonate obtained by removing the solvent from this solution had a molar ratio of constitutional units of picresolefluorene and bisphenol A of 30:70 (polymer yield: 97%).
- the intrinsic viscosity of this polymer was 0.337 and Tg was 190.
- the content of fluoren-9-one in the obtained polymer was 1.9 ppm.
- This polymer is referred to as polycarbonate A.
- Synthesis example 3 ' 35315 parts of ion-exchanged water and 3920 parts of a 48% aqueous sodium hydroxide solution were placed in a reactor equipped with a thermometer, a stirrer and a reflux condenser, and the content of fluoren-9-one was 2.1 ppm by the HP LC analysis described above.
- UV absorber 2,2, -p-phenylenebis (3,1-he-V-year-old-acid-4-yn) Examples 21 to 24
- Example 21 A 100 1.0 0 5900 95 1.60
- Example 22 B 100 1.0 0 5700 95 1.62
- Example 23 C 100 1.0 0 5600 94 1.62
- Example 24 A 100 1.0 0.02 5800 96 1.60
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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DE60333218T DE60333218D1 (de) | 2002-11-14 | 2003-11-13 | Polycarbonatcopolymer, harzzusammensetzung und formkörper |
CA 2505969 CA2505969C (en) | 2002-11-14 | 2003-11-13 | Polycarbonate copolymer, resin composition, and molded article |
EP20030772737 EP1566396B1 (en) | 2002-11-14 | 2003-11-13 | Polycarbonate copolymer, resin composition, and molded article |
AU2003280769A AU2003280769B2 (en) | 2002-11-14 | 2003-11-13 | Polycarbonate copolymer, resin composition, and molded article |
US10/534,706 US7244804B2 (en) | 2002-11-14 | 2003-11-13 | Polycarbonate copolymer, resin composition, and molded article |
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JP2003111270A JP2004314422A (ja) | 2003-04-16 | 2003-04-16 | 耐熱性、耐光性光学部品 |
JP2003-111270 | 2003-04-16 | ||
JP2003315229A JP2005082677A (ja) | 2003-09-08 | 2003-09-08 | ポリカーボネート樹脂の製造方法 |
JP2003-315229 | 2003-09-08 | ||
JP2003321150A JP4383811B2 (ja) | 2003-09-12 | 2003-09-12 | 芳香族ポリカーボネート共重合体 |
JP2003-321150 | 2003-09-12 |
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WO2004044033A1 true WO2004044033A1 (ja) | 2004-05-27 |
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US (1) | US7244804B2 (ja) |
EP (1) | EP1566396B1 (ja) |
KR (1) | KR100956048B1 (ja) |
AU (1) | AU2003280769B2 (ja) |
CA (1) | CA2505969C (ja) |
DE (1) | DE60333218D1 (ja) |
TW (1) | TWI315320B (ja) |
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Cited By (1)
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US9193826B2 (en) | 2011-03-28 | 2015-11-24 | Teijin Limited | Thermoplastic resin comprising a fluorene derivative |
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KR20050086605A (ko) | 2005-08-30 |
TW200415172A (en) | 2004-08-16 |
CA2505969A1 (en) | 2004-05-27 |
US20050250930A1 (en) | 2005-11-10 |
US7244804B2 (en) | 2007-07-17 |
EP1566396B1 (en) | 2010-06-30 |
CA2505969C (en) | 2010-12-21 |
AU2003280769B2 (en) | 2008-06-05 |
TWI315320B (en) | 2009-10-01 |
DE60333218D1 (de) | 2010-08-12 |
EP1566396A1 (en) | 2005-08-24 |
KR100956048B1 (ko) | 2010-05-06 |
AU2003280769A1 (en) | 2004-06-03 |
EP1566396A4 (en) | 2007-06-27 |
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