TW200923011A - Light-reflecting polycarbonate resin composition and molded body thereof - Google Patents

Abstract

Disclosed is a light-reflecting polycarbonate resin composition containing a polycarbonate resin (A), which contains a polycarbonate copolymer having a specific amount of a specific repeating unit and a viscosity of 30-71, and a white pigment (B) at a mass ratio of from 99:1 to 50:50. This light-reflecting polycarbonate resin composition is excellent in fluidity and thermal stability, and enables to obtain a molded body which is excellent in light reflectance, dimensional stability and appearance. Also disclosed is a molded body of such a light-reflecting polycarbonate resin composition.

Description

200923011 IX. Description of the Invention The present invention relates to a light-reflective polycarbonate resin composition and a molded body thereof. More specifically, it is suitable for forming a light reflecting plate, a lamp holder, a reflecting member of a lighting device, an optical member including a light reflecting member, etc., which have good fluidity, good light stability, dimensional stability, and good appearance. The light-reflective polycarbonate resin composition of the body and a molded body thereof. [Prior Art] When the polycarbonate resin is applied to a light reflecting plate, a socket, or a reflecting member of a lighting machine in the field of liquid crystal display, the obtained molded body must have a high reflectance in order to maintain brightness. Therefore, it is desirable to blend a white pigment which is difficult to absorb light, for example, the most preferable titanium oxide in a white pigment which is generally used. However, when a large amount of titanium oxide is blended, the molecular weight of the polycarbonate resin is reduced to a large extent, and the mechanical strength is lowered. In the case of the polycarbonate resin composition which has been proposed to improve the above-mentioned problems (see Patent Document 1), the proposed polycarbonate resin has been recently reduced in thickness, large-area, and miniaturized optical members. In the composition, fluidity was insufficient at the time of injection molding, and as a result, the filling became poor, and a satisfactory molded body could not be obtained. As a means of supplementing the fluidity, a method of increasing the molding temperature is considered, but there is a problem that the obtained product is warped and deformed. Further, although a method of improving the fluidity of a polycarbonate resin using a plasticizer is considered, the color tone of the obtained product is deteriorated, and the reproducibility of the color of the light source is poor, and a high reflectance of -5 to 200923011 cannot be obtained. On the other hand, it is known that an optical molded article having a good fluidity of a specific polycarbonate copolymer is used, but the use of titanium oxide is not examined (see Patent Document 2). In view of such a situation, it is required to further improve the light reflectance, the thermal stability, and the fluidity during molding in the light-reflective polycarbonate resin composition. Patent Document 1: Japanese Laid-Open Patent Publication No. Hei No. 2005-247947 [Patent Document 2] JP-A-2005-247947 SUMMARY OF THE INVENTION The present invention is to provide fluidity, thermal stability, and light reflectance. A light-reflective polycarbonate resin composition of a molded article having a dimensional stability and a good appearance, and a molded body thereof. Means for Solving the Problems In order to achieve the above object, the present inventors have found that by using a predetermined ratio of polycarbonate having a specific repeating unit having a specific amount of a specific repeating unit and having a viscosity number within a specific range The above object can be attained by the ester resin and the white pigment, and thus the present invention has been completed. That is, the present invention provides: 1. A light-reflective polycarbonate resin composition comprising a polycarbonate resin (yttrium) and a white pigment (yttrium), wherein the polycarbonate resin (yttrium) is contained The repeating compound represented by the general formulae (I) and (Π) is -6-200923011, and the content of the general formula (π) is 1 to 30% by mass. The polycarbonate copolymer having a viscosity of 30 to 71 (Α- 1) 'And (Α) component and (Β) component content ratio, according to the mass ratio of 99: 1 to 50: 50' [Chemical 1]

[wherein R1 and R1 are each independently an alkyl group having 1 to 6 carbon atoms. X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylene group having 2 to 8 carbon atoms (alkyhdene), and a carbon number of 5 To the ring of the alkyl group, the ring number of 5 to 15 ring, -s', -so-, -so2-, -〇-, -c〇-bonding' or the following formula / JJJ \ now The group represented by the formula (IV), R3 and R4 are each independently an alkyl group having 1 to 7 + 3 carbon atoms, and γ is a linear or branched chain of a carbon number of 2 to 15, and a 35 to d are respectively An integer from 0 to 4, η is an integer from 2 to 200 'and' complex R1 and r1, or plural R3 and R4 may be the same or different from each other] [Chemical 2] -

(1) The light-reflective polycarbonate resin composition according to the above-mentioned item 1, 200923011, wherein the ruthenium contains the organopolyoxane with respect to 100 parts by mass of the total of the polycarbonate resin (A) and the white pigment (B). (C) 0.05 to 3 parts by mass. The light-reflective polycarbonate resin composition according to the above item 1, wherein the white pigment (B) is titanium oxide. 4. The light-reflective polycarbonate resin composition according to the above item 1, wherein the polycarbonate resin (A) contains a polycarbonate-polyorganotene oxide copolymer (A-2). 5. The light-reflective polycarbonate resin composition according to the above item 4, wherein the polyorganosiloxane mixture (A-2) contains 0.1 to 0.1% of the polyorganosiloxane. 1〇% by mass. 6. The light-reflective polycarbonate resin composition according to the above item 1, wherein the polycarbonate resin (A) contains an aromatic polycarbonate resin (A-3). 7. The light-reflective polycarbonate resin composition according to the above item 1, wherein the ruthenium contains a flame retardant (100 parts by mass) based on 100 parts by mass of the total of the polycarbonate resin (A) and the white pigment (B). D) 0.1 to 5 parts by mass. A molded article obtained by molding the light-reflective polycarbonate resin composition described in any one of items 1 to 7 above. 9. The molded article according to item 8 above, which is a light reflector. 10. The molded article according to the above item 9 wherein the reflectance (Y) is 90% or more and the total light transmittance at a thickness of 1 mm is 0.6% or less. 200923011 Effect of the Invention According to the present invention, fluidity and heat stability can be obtained. A light-reflective polycarbonate resin composition and a molded article of the composition having good light reflectance, dimensional stability, and appearance. [Embodiment] Hereinafter, the present invention will be described in detail. [(A) polycarbonate resin]

The light-reflective polycarbonate resin composition of the present invention is a composition containing (A) a polycarbonate resin (hereinafter simply referred to as "(A) component"). The component (A) contains (A-1) polycarbonate. The ester copolymer, as an essential component, may contain one or more selected from the group consisting of (A-2) polycarbonate-polyorgano I: alkoxysilane copolymer, (A-3) aromatic polycarbonate resin [( Any component of A-1) and other aromatic polycarbonate resins other than (A-2)] The ruthenium (A-1) polycarbonate copolymer is a phenol-modified diol copolymerized polycarbonate. It is produced by a conventional manufacturing method called an interfacial polymerization method. That is, it can be produced by a method of reacting a carbonate precursor such as a divalent phenol, a phenol-modified diol, and phosgene. Specifically, for example, in an inert solvent such as dichloromethane, in the presence of a conventional acid acceptor or a molecular weight modifier, a catalyst or a divergent agent is added as needed to make a divalent phenol, a phenol-modified diol, and light. Carbonic acid, etc. - 200923011 Ester precursor reaction, (A-1) Polycarbonate copolymer having repeating units represented by the following general formulas (I) and (11). [Chemical 3]

In the general formula (I), R1, R2, a'b and x are as described in the following formula (1), and R3, R3, c, d, η and γ' in the general formula (II) and the following The divalent phenol used in the production of the (A-1) polycarbonate copolymer is, for example, a compound represented by the following general formula (la).

(la) In the general formula (la), 'R1 and R2 are each independently an alkyl group having 1 to 6 carbon atoms, and the alkyl group may be any of a linear chain, a branched chain, and a cyclic group. As the alkyl group, specifically, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, butyl, n-pentyl, isopentyl, n-hexyl, isohexyl, cyclopentane Base, cyclohexyl and the like. a and b are the substitution numbers of R1 and R2, respectively, and are integers of 〇4. Further, in the case where R1 is a plural number, they may be the same or different from each other in the case of -10 200923011, and in the case where R2 is a plural number, 'the same or different from each other, X is a single bond, and a C 1 to 8 alkyl group. (eg, methylene, ethyl, propyl, butyl, pentyl, hexyl, etc.), alkylidene having 2 to 8 carbon atoms (eg, ethylene, isopropylidene, etc.) a cycloalkyl group having 5 to 15 carbon atoms (e.g., a cyclopentyl group, a cyclohexyl group, etc.), a cycloalkylene group having 5 to 15 carbon atoms (e.g., a cyclopentylene group, a cyclohexylene group, etc.), _s -, -so-, _S02-, -〇_, -CO_ linkage, or a group represented by the following formula (111) or the following formula (IV). [Chemical 5]

The divalent phenol represented by the above formula (la) may be variously selected, in particular, 2,2 m Λ _ x (4-hydroxyphenyl)propane [bisphenol a]. As a biguanide A, for example, phenolic such as bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)butane , 2,2 _ bis (4· benzyl benzoquinone & yl) octane, 2,2-bis(4-hydroxyphenyl)phenylmethane, 2,2-bis(4_with cargo base) l-Methylphenyl)propane, bis(4-hydroxyphenyl)naphthylmethane, 1 1隹* '(4_hydroxy-3 butylphenyl)propane, 2,2-bis(4-hydroxy- 3_湟吴本基)propane, 22_bis(4-hydroxy-3,5-dimethylphenyl)propane, 2 9 _ 'a pair of (4-hydroxy-3-chlorophenyl)propane, 2,2- Bis(4-hydroxy-3,5-diindole-yl)propane and bis(hydroxyaryl) such as 2,2-bis(4-hydroxy-3,5-dibromophenyl-11 - 200923011)propane Alkanes; 1,1-bis(4-hydroxyphenyl)cyclopentene, 1,1-bis(4-hydroxyphenyl)cyclohexane and 1,1-bis(4-hydroxyphenyl)_3,5 , bis(hydroxyaryl)cycloalkanes such as 5-trimethylcyclohexane; 4,4'-dihydroxyphenyl ether and 4,4'-dihydroxy-3,3'-dimethylphenyl Dihydroxyaryl ethers such as ethers; 4,4,-dihydroxydiphenyl sulfide and 4,4'-two Dihydroxydiaryl sulfides such as benzyl-3,3'-dimethyldiphenyl sulfide; 4,4'-dihydroxydiphenylarylene and 4,4,-dihydroxy-3,3'- Dihydroxydiaryl fluorenes such as dimethyldiphenylarylene; 4,4,-dihydroxydiphenyl maple and 4,4'-dihydroxy-3,3'-dimethyldiphenylhydrazine Dihydroxydiaryl fluorenes; dihydroxybiphenyls such as 4,4'-dihydroxybiphenyl; 9,9-bis(4-hydroxyphenyl)anthracene and 9,9-bis(4.hydroxyl-3) -Dimethyldiaryl hydrazines such as -methylphenyl)hydrazine; 1,3,bis(4-hydroxyphenyl)adamantane, 2,2-bis(4-hydroxyphenyl)adamantane, and 1,3- Dihydroxydiaryladamantane such as bis(4-hydroxyphenyl)-5,7-dimethyladamantane; bis(4-hydroxyphenyl)diphenylmethane, 4,4'-[1,3 -phenyl-bis(1-methylethylidene)]bisphenol, 10,10-bis(4-hydroxyphenyl)-9-fluorenone, 1,5-bis(4-hydroxyphenylthio)_2 , 3-dioxapentaene, etc. These divalent phenols may be used singly or in combination of two or more. As the molecular weight modifier, in general, various users of the polymerization of the polycarbonate resin can be used. Specifically, 'as a monovalent hydrazine, such as phenol, o-n-butyl phenol, m-n-butyl phenol, p-n-butyl phenol, o-isobutyl phenol, m-isobutyl phenol, p-isobutyl Phenol, o-butyl butyl, m-butyl phenol, p-butyl phenol, o-n-pentyl phenol, m-n-pentyl phenol, p-n-pentyl phenol, o- n-Hexylphenol, m-hexyl-based, p-n-hexylphenol-12-200923011, p-third octyl phenol, o-cyclohexyl phenol, m-cyclohexyl phenol, p-cyclohexyl fluorene, o-phenyl Anthracene, m-phenyl anthracene, p-phenyl anthracene, ortho-n-decyl fluorene, m-fluorenyl, p-n-decyl fluorene, o-isopropylphenyl hydrazine, m-cumyl phenol, p-Phenylphenol, o-naphthylphenol, m-naphthylphenol, p-naphthylphenol; 2,5-dibutyl butyl phenol; 2,4-di 3 butyl phenol; 5-di-tert-butylphenol; 2,5-diisopropylphenylphenol; 3,5-diisopropylphenylphenol; p-cresol, bromophenol, tribromophenol, in the ortho, meta or a monoalkylphenol having a linear or branched alkyl group having an average carbon number of 12 to 35; 9-(4-hydroxyphenyl)-9-(4-methoxyphenyl)anthracene; - (4-hydroxy-3-methylphenyl)-9 - (4-methoxy-3-methylphenyl) fluorene; 4-(1. adamantyl) phenol. Among these monovalent phenols, p-butyl phenol, p-cumyl phenol and p-phenyl phenol are preferably used. As the catalyst, an interphase moving catalyst such as a tertiary amine or a salt thereof, a 4-grade ammonium salt, a 4-grade phosphonium salt or the like can be used. As the tertiary amine, for example, triethylamine, tributylamine, N,N-dimethylcyclohexylamine, acridine and dimethylaniline, and the like. Further, 'as a tertiary amine salt, for example, a hydrochloride of a tertiary amine such as these, a salt of a salt, and the like. As a 4-grade money salt, such as trimethylbenzylammonium chloride, triethyl-methyl-methylated money, dibutylbenzyl chloride, trioctylmethyl chloride, tetrabutyl chloride Ammonium and tetrabutylammonium bromide, etc., as a grade 4 scale salt, such as tetrabutylphosphonium chloride and tetrabutyl bromide. These catalysts may be used alone or in combination of two or more. Among the above catalysts, a tertiary amine is preferred, and particularly triethylamine is preferred. As the inactive organic solvent, there are various solvents. For example, dichlorocarbazide (methane chloride), chloroform, carbon tetrachloride, 1,1-dichloroethane, cesium, 2_ -13- 200923011 dichloroethane, 1,1,1-trichloroethane Chlorinated hydrocarbons such as alkane, 1,1,2-trichloroethane, hydrazine, 1,1,2-tetrachloroethane, 1,1,2,2-tetrachloroethane, pentachloroethane and chlorobenzene , toluene, ethyl benzene, and the like. These organic solvents may be used singly or in combination of two or more. Among these, especially dichloromethane is suitable. As the diverging agent, for example, 1,1,1-tris(4-hydroxyphenyl)ethane; £^,^,,,,,-tris(4-hydroxyphenyl)-1,3,5-three can be used. Isopropylbenzene; 1-[ 〇:-methyl-oxime:-(4'-hydroxyphenyl)ethyl]-4-[«',61'-bis(4''-hydroxyphenyl)ethyl Benzene; 4,4'-[1-[4-[1-(4-hydroxyphenyl)-1-methylethyl]phenyl]ethylidene]bisphenol; fluoroglycine, benzene A compound having three or more functional groups such as formic acid and eosin bis(o-cresol). (A-1) The phenol-modified diol used for the production of the polycarbonate copolymer is a phenol-modified diol represented by the following general formula (Ila). [Chemical 6]

(Π») in the general formula (Ila: 兀 ,, as an alkyl group, such as methyl, ethyl, n-propyl and isopropyl. In the case where R3 is plural, they may be the same or different from each other, in R4 In the case of plural, they may be the same or different from each other. γ is a linear or branched alkyl group having 2 to 15 carbon atoms, and is an alkyl group such as an ethyl group, a propyl group, and an butyl group. Base, pentyl, and sputum: 丨,,,,,,,,,,,,,,,,,,,,,,, Aridin has a sub-hospital base such as j-group, pentylene group and isoamyl group. c and d are integers from 〇 to king 4, respectively, and η is an integer from 2 to -14 to 200923011 200. η is 6~ 70. The phenol-modified diol benzoic acid represented by the above general formula (11 a ) or an alkyl ester thereof, and a phenol-modified diol derived from ruthenium chloride and a polyether diol can be obtained by the special opening 62- It is synthesized by a method such as No. 9-M2, No. 60-79072, and JP-A-2002-173, 465, and the like, and the phenol-modified two lines obtained by such methods are appropriately purified. As a method of purification, for example, it is desired toA method of distilling off excess raw material (for example, p-hydroxyl) in a system under reduced pressure, a method of washing a phenol-modified diol with water or an aqueous alkali solution (for example, an aqueous solution), etc. As a hydroxybenzoic acid alkyl ester, a hydroxy benzoin The acid benzoic acid ethyl ester or the like is a representative example. The polyether diol is represented by the same HO) and the η system, and has a repeating unit of a carbon number or a branched oxyalkylene group. With polyethylene glycol, polypropylene glycol, polybutylene glycol and so on. Polybutylene glycol is particularly desirable from the standpoint of availability. The polyoxymethylene glycol has an oxidation number η of 2 to 200, preferably 6 to 70. η is 2 or more. The efficiency at the time of copolymerization of the diol is high, and when η is 200 or less, the heat resistance of the lanthanum carbonate copolymer is small. As a ruthenium chloride, hydroxybenzoic acid and phosgene are exemplified. More specifically, it can be exemplified by the patent No. 2652707, etc., and the benzoic acid or its alkyl ester can be either a para- or a meta-position, from the side of the copolymerization reaction, to the opposite body There are steric hindrance to the hydroxyl group, and the reactivity of the copolymerization is: for example, a hydroxy compound. The alcohol which is proposed by the Japanese Patent Laid-Open is intended to be in the late stage of the reaction to give a benzoic acid such as sodium hydrogencarbonate methyl ester or a hydroxyl group (Υ-Ο) η-Η ( :1 5 linearly, for example, and a hydrophobic alkene When the base is repeated, the phenol-modified r (a-ι) polyp is the representative of the supported method, and the orthodontic is ideal. The ortho-position difference is 虞. -15- 200923011 于 (A -1 ) polycarbonate In the production step of the copolymer, in order to prevent deterioration of the phenol-modified diol, it is preferred to use a dichloromethane solution to the extent possible. In the case where a dichloromethane solution cannot be used, an aqueous solution of sodium hydroxide or the like can be used. When the copolymerization amount of the phenol-modified diol is increased in the (A-1) polycarbonate copolymer, the fluidity is improved, but the heat resistance is lowered. Therefore, the amount of the copolymerization of the phenol-modified diol depends on The balance between the desired fluidity and the heat resistance is preferably selected. When the amount of the phenol-modified diol is too large, as shown in JP-A-62-792 22, it becomes an elastic body, which may not be suitable for use. The same general use of polycarbonate resin. For heat resistance above 1 〇〇 °C The amount of the phenol-modified diol residue contained in the (A -1 ) polycarbonate copolymer is from 1 to 30% by mass, preferably from 1 to 20% by mass, more preferably from 1 to 1 5 % by mass. In the present invention, the (A-1) polycarbonate copolymer used in the component (A) has a viscosity of 30 to 71 [equivalent to Mv (viscosity average molecular weight) = 10,000 to 28, 100], preferably 34.7 to 62 [equivalent to Μν = 1 2,000 to 24,100]. When the viscosity is 30 or more, the mechanical properties are good, and when the viscosity is 71 or less, a good phenol-modified diol (copolymer) can be exhibited. Further, if a high fluidity is desired, it is not necessary to use a large amount of the copolymer. When the viscosity number is 71 or less, the heat resistance is not greatly lowered with respect to the amount of the copolymer used. Further, the viscosity number is based on 1 measured by ISO 1 62 8·4 ( 1Q99). (A-2 ) polycarbonate-polyorganofluorene-16- 200923011 oxyalkylene copolymer used as (A) component can be used in a variety of ways. More preferably, it is a polycarbonate moiety having a repeating unit having a structure represented by the following formula (V) and having the following formula (VI) I) The part of the polyorganosiloxane that is represented by the repeating unit. [Chem. 7]

(V) [wherein, R5 and R6 are each a halogen atom (e.g., chlorine, bromine, fluorine, iodine) or an alkyl group having 1 to 8 carbon atoms, and e and f are each an integer of 〇 to 4. In the case of the plural r5, they may be the same or different from each other, and in the case of the plural R6, they may be the same or different from each other. Then, Z is an alkylene group having 1 to 8 carbon atoms, an alkylene group having 2 to 8 carbon atoms, a cycloalkyl group having 5 to 15 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms or -S02-, -S0_, _s_, -〇-, -CO-bond

'Single bond or a group represented by the following formula (VI). ] [Chem. 8] [Chem. 9]

-17- (VII) 200923011 [wherein, R7, R8 and R9 are each a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a phenyl group, which are the same or different. Further, g and h are respectively 〇 or an integer of 1 or more. The degree of polymerization of the polyorganosiloxane is 5 to 1, and the enthalpy is more preferably 20 to 300, which is preferable from the viewpoint of flame retardancy and appearance of the molded article. (A-2) a polycarbonate-polyorganosiloxane having a polycarbonate moiety having a repeating unit represented by the above general formula (V) and having i represented by the above general formula (VII) The block copolymer formed by the polyorganosiloxane component of the repeating unit has a viscosity average molecular weight of 10,000 to 50,000, preferably 15 and 〇〇〇35,000. Further, the n-hexane soluble component of the polycarbonate-polyorganosiloxane copolymer is preferably 1.0% by mass or less. The (A-2) polycarbonate-polyorganosiloxane mixture, from the viewpoint of flame retardancy, the content of the polyorganosiloxane component is 0.1 to 10% by mass, and more preferably 0.5 to 5 mass. %. i (A-2) polycarbonate-polyorganosiloxane copolymer, for example, a polycarbonate oligo (PC oligomer) constituting a polycarbonate portion prepared in advance and constituting a polyorganoquinone a polyorganosiloxane having a reactive group at the end of the oxyalkyl moiety [for example, a polydialkyl siloxane or a polymethyl benzene such as polydimethyl siloxane (PDMS) or polydiethyl oxane A hydrazine or the like is dissolved in a solvent such as dichloromethane, chlorobenzene or chloroform, and a sodium hydroxide aqueous solution of bisphenol is added, and triethylamine or trimethylbenzylammonium chloride is used as a catalyst. Manufactured by interfacial reaction. Further, a polycarbonate-polyorganosiloxane copolymer produced by the method described in JP-A-44-30108, JP-A-45-50510, No. Hei. Here, the polycarbonate oligomer having the repeating unit represented by the above general formula (V) is in a solvent method, that is, a solvent such as dichloromethane, in the presence of a conventional acid acceptor' molecular weight modifier It is produced by a reaction with a polycarbonate precursor of divalent phenol and phosgene represented by the general formula (V111) or a transesterification reaction of a polycarbonate precursor such as divalent phenol and diphenyl carbonate. [化10]

(VIII) [wherein, R5, R6, Z'e and f are the same as described above. The divalent phenol' represented by the above general formula (VIII) may be various, and particularly preferably 2,2-bis(4-hydroxyphenyl)propane [bisphenol A]. Further, some or all of bisphenol A may be replaced by other divalent phenols. As a divalent phenol other than bisphenol A, for example, bis(4-hydroxyphenyl)alkane, hydroquinone, 4,4'-dihydroxybiphenyl, bis(4-hydroxyphenyl)cycloalkane, bis(4-hydroxyl) a compound of phenyl) sulfide, bis(4-hydroxyphenyl)fluorene, bis(4-hydroxyphenyl) submilling, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)ketone; For example, bis(3,5-dibromo-4-hydroxyphenyl)propane and halogenated bisphenols of bis(3,5-dichloro-4-hydroxyphenyl)propane. The polycarbonate oligomer to be produced by the (Α-2) polycarbonate-polyorganosiloxane mixture may be one of the homopolymers using such divalent phenols, or two kinds thereof. The above copolymer. Further, it may be a thermoplastic irregularity -19-200923011 PCT polycarbonate obtained by using a polyfunctional aromatic compound and the above-mentioned divalent phenolphthalein. Further, the production of a polycarbonate-polyorganosiloxane subpolymer having a n-hexane soluble component of 1% by mass or less, for example, a content of the polyorganosiloxane in the copolymer is 10% by mass or less. When the number of repeating units represented by the above general formula (VII) is 5 or more, and the above-mentioned copolymerization is carried out using a catalyst such as a ruthenium amine of 3·3χ1 (Γ3 mol/(kg. oligomer) (A) Aromatic polycarbonate resin (A-3) and other aromatic polycarbonate resins other than (A-2) used in the component (A) can be, for example, a conventional production method. That is, a divalent phenol is usually produced by reacting a polycarbonate precursor such as phosgene or a carbonate compound, and specifically, for example, a solvent such as dichloromethane, a conventional acid acceptor or a molecular weight regulator In the presence of the same, a diverging agent is added as needed, by reaction with a carbonate precursor such as divalent phenol and phosgene, or a transesterification reaction such as a carbonate precursor of divalent phenol and diphenyl carbonate. Manufactured as a (A-3) aromatic polycarbonate resin The divalent phenol may be variously selected, and particularly suitable is 2,2-bis(4-hydroxyphenyl)propane [bisphenol A]. As the divalent phenol other than bisphenol A, for example, the aforementioned polycarbonate may be used. Examples of the ester copolymer include a diaryl carbonate such as diphenyl carbonate, a dialkyl carbonate or a dialkyl carbonate such as diphenyl carbonate, and the like, and a molecular weight modifier. Generally, users of the polymerization of polycarbonate can be used, and various substances can be used. Specifically, as a monovalent hydrazine, for example, hydrazine, o-n-butyl phenol, m-n-butyl phenol, and p-n-butyl phenol, etc. An example of the above polycarbonate copolymer. Among the monovalent phenols, p-butyl phenol, p-iso-20-200923011 propofol or p-phenyl phenol is preferred. The same as the aforementioned polycarbonate copolymer is used, for example, 1,1,1-tris(4-hydroxyphenyl)ethane; α,α,,α"-tris(4-hydroxyphenyl)-1,3, 5-triisopropylbenzene; 1-[α-methyl-α·(4,-hydroxyphenyl)ethyl]-4-[α,,α'_bis(4′′-hydroxyphenyl)ethyl Benzene; fluorogan a compound having three or more functional groups such as acid, trimellitic acid, and eosin bis(o-cresol). The (Α-3) aromatic polycarbonate resin used in the present invention usually has a viscosity average molecular weight of 10 〇〇〇~1 00,000 is more desirable, and more preferably 1 3,000 to 40,000. As the (Α-3) aromatic polycarbonate resin, those described above or commercially available products can be used. Mixing ratio of (Α-1) polycarbonate copolymer, (Α-2) polycarbonate-polyorganosiloxane subpolymer and (Α-3) aromatic polycarbonate resin contained in the ester resin Al) : (Α-2) : (Α-3), according to the mass ratio of 1~100: 99~0: 99~0, ideally 10~90: 90~1〇: 80~0, more ideal 20 to 60: 80 to 10: 70 to 〇 [(Β) white pigment] The light-reflective polycarbonate resin composition of the present invention contains (Β) white pigment (hereinafter simply referred to as "(Β) component)" Composition. (Β) Ingredients can be used in a wide variety of materials. Specifically, for example, oxidized chin, oxidized fresh, lithopone, sulphide and shoubai Temple. In this -21 - 200923011, etc., titanium oxide with tinting strength is preferred. The titanium oxide may be any of a rutile type and an anatase type, and a rutile type which is excellent in thermal stability and weather resistance is preferable. Titanium oxide is treated with various surface treatment agents to have an effect when it is coated on its surface. As the treating agent, hydrated alumina, cerium oxide, zinc or the like is usually used. In order to improve the dispersibility of titanium oxide in the resin, eucalyptus oil, polyalcohol or the like can be used. (A) The mixing ratio of the polycarbonate and the (B) white pigment is preferably from 99:1 to 50:50 in terms of the molding processability of the resin, the light-shielding property of the molded article, and the high light reflectivity. 90: 10~50: 50, more ideally 80: 20~50: 50. [(C) Organic Polyoxalate] In the light-reflective polycarbonate resin composition of the present invention, (C) organopolyoxyalkylene (hereinafter simply referred to as "(C) component") may be blended. As the component (C), an alkyl hydrogen hydride resin, an alkoxy oxirane resin, etc., for example, SH1107, SR2 402, BY16-160, BY16-161, BY16 manufactured by Tor ay. Dow Corning Co., Ltd. can be used. -160E and B Y1 6- 1 6 1 E. In addition, it is preferable to mix (5) parts by mass of (5) parts by weight of 5 parts by mass of 〇·〇 with respect to 100 parts by mass of the total of the polycarbonate resin (A) and the white pigment (B), thereby preventing (A) polycarbonate. Decomposition of the ester resin. The amount of the component (C) is preferably 0.1 to 2 parts by mass, more preferably 0.4 to 2 parts by mass. (C) When the amount of the organopolysiloxane is less than 5 parts by mass, the (A) polycarbonate resin is deteriorated, and the molecular weight may be lowered. Further, when the amount of the super--22-200923011 exceeds 3 parts by mass, the appearance of the silver-formed product on the surface of the molded body may be lowered [(D) flame retardant] The light-reflective polycarbonate resin composition of the present invention may be blended ( D) Flame retardant (hereinafter referred to as "(D) component"). The component (D) is not particularly limited. A phosphorus-based, metal-based or oxiranic-based flame retardant can be used, and a graft copolymer having a polyorganosiloxane is preferably used, for example. As a preferable specific example of the graft copolymer having a polyorganosiloxane, for example, in the presence of (E) polyorganol oxide particles of 40 to 90 parts by mass, (F) is made of a polyfunctional single (f-1) 100 to 50% by mass and other copolymerizable monomers (f-2) 0 to 50% by mass of the vinyl monomer 0.5 to 10 parts by mass of the polymerization, and (G) other ethylene 5 to 50 parts by mass of the monomer [100 parts by weight relative to (E), (F) and (G)] a graft copolymer of a polyorganosiloxane which is obtained by polymerization. (E) the polyorganosiloxane oxide particles have a number average particle diameter of from 0.008 to 0.6/zm as determined by light scattering or electron microscopy, more preferably from 0.01 to 0.2 " m, particularly preferably 〇 .〇1~0.15// m. If the average particle diameter is less than 0.008/m, the difficulty tends to be obtained. When the average particle diameter exceeds 〇6 Vm, the flame retardancy tends to be deteriorated. Further, (E) the amount of the toluene-insoluble component of the polyorganosiloxane particles (the amount of the toluene-insoluble component in the case where 0.5 g of the particles are immersed in 80 ml of toluene at room temperature for 24 hours) is 95% or less, and is 50. % or less, -23- 200923011 Especially 20% or less, it is preferable from the point of flame retardance and impact resistance. The polyfunctional monomer (f-1) is a compound containing two or more polymerizable unsaturated bonds in the molecule, and specific examples thereof include, for example, methacrylic acid propylene vinegar, 'triallyl cyanurate, and iso-cyanuric acid. Triallyl ester, diallyl phthalate, ethylene glycol dimethacrylate, l53-butane dimethacrylate, and diethyl benzene. These may be used alone or in combination of two or more. Among these, it is preferable to use allyl methacrylate in terms of economy and effect. Specific examples of the copolymerizable monomer (f-2) include aromatic vinyl monomers such as styrene, fluorene-methyl styrene, p-methyl styrene, and p-butyl styrene; acrylonitrile; A vinyl cyanide monomer such as methacrylonitrile; methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, glycidyl acrylate, hydroxyethyl acrylate, hydroxybutyl acrylate a methacrylate monomer such as ester, methyl methacrylate, ethyl methacrylate, butyl methacrylate, lauryl methacrylate, glycidyl methacrylate or hydroxyethyl methacrylate; A carboxyl group-containing vinyl monomer such as methyl succinic acid, (meth) acrylate, fumaric acid or maleic acid. These may be used alone or in combination of two or more. (G) Other vinyl monomers are used to obtain a component of a graft copolymer containing a polyorganosiloxane, and the graft copolymer is blended with an aromatic polycarbonate resin to improve flame retardancy and resistance. In the case of impact, it is ensured that the graft copolymer is compatible with the aromatic polycarbonate resin 'in order to disperse the graft copolymer in the aromatic polycarbonate resin -24-200923011. Therefore, it is more preferable that the solubility parameter of the polymer of the (G) B-type monomer 'the B-type monomer is more preferably 9·15 5 1 1 5 [(cal/cm 3) 1/2]. It is particularly preferably 9.20 to 10.05 [(Cal/cm3) 1/2] of 9.17 to 10.1 〇 [(cal/cm3) 1/2]'. When the solubility parameter is in the above range, the flame retardancy can be improved. The details of such a solubility parameter are described in Japanese Laid-Open Patent Publication No. 2003-238639. The average particle diameter of the component (D) is determined by electron microscopic observation, and it is preferably dispersed at 0.1 to 1 / m. When the average particle diameter is more than 1 // m, sufficient flame retardancy, rigidity, and impact strength cannot be obtained, and when it is less than 0.1 m, the impact strength is insufficient. The amount of the component (D) is from 0.1 to 5 parts by mass based on 100 parts by mass of the total of the polycarbonate resin (a) and the white pigment (B). The amount of the component (D) is preferably from 2 to 4 parts by mass, more preferably from 0.4 to 3 parts by mass. When the amount is less than 0 gt; 1 part by mass, the flame retardancy and the impact strength are insufficient, and when the amount is more than 5 parts by mass, the flame retardancy is lowered, and the rigidity is lowered [others] and the composition of the light-reflective polycarbonate resin of the present invention is A phosphorus stabilizer, a polytetrafluoroethylene, and various additives may be blended as needed. Pity ampoules can improve the thermal stability during manufacturing or molding, and improve the mechanical properties, hue and molding stability. As such a phosphorus-based stabilizer, for example, a phosphate compound and/or an aromatic phosphine compound. -25- 200923011 Examples of the phosphate-based compound, such as phosphorous acid, phosphoric acid, phosphinic acid, phosphonic acid, and the like, and specifically, for example, triphenyl phosphite, tris(nonylphenyl) phosphite, and phosphorous acid Tris(2,4-di-3 butylphenyl) ester, tridecyl phosphite, trioctyl phosphite, tris(octadecyl)phosphite, didecyl monophenyl phosphite, phosphorous acid Dioctyl monophenyl ester, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, double (2,6-di-3 butyl-4-methylphenyl)pentaerythritol diphosphite, 2,2-methylenebis(4,6-di-tert-butylphenyl)octyl phosphite, Bis(nonylphenyl)pentaerythritol diphosphite, bis(2,4-di-3 butylphenyl)pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, tributyl phosphate, phosphoric acid Ethyl ester, trimethyl phosphate, triphenyl phosphate, diphenyl mono-diphenyl phosphate, dibutyl phosphate, dioctyl phosphate, diisopropyl phosphate, 4,4'-biphenylene Secondary phosphorus Tetrakis (2,4-3-butylphenyl) phosphite, benzyl dimethyl phosphonate, diethyl phenyl phosphonate, phenyl phosphonic acid ester and the following compound 1~10 like. [化11]

-26- 200923011 [Chem. 12]

Compound 2 [Chemical 13]

Compound 3 [Chemical 14]

Compound 4 [Chemical 15]

Compound 5 -27- 200923011 [Chem. 16] -3⁄4 W 匕 17] [Chem. 18] [Chem. 19]

C compound 8

Compound 6 Compound 7 Compound 9 -28- 200923011 1: Conversion 20]

Among the above compounds, the above compound 1, bis(2,6-di-butyl butyl-4-methylphenyl)pentaerythritol diphosphite (PEP-36) and triphosphoric acid tris(2,4- Di-tert-butylphenyl) ester (Irgl 68) is preferred. The aromatic phosphine compound is, for example, the following general formula (IX) (IX) P(W) 3 [wherein w is a hydrocarbon group, and at least one of them may have an aromatic group having a carbon number of 6 to 18 as a substituent. The aryl phosphine compound represented. As the aromatic phosphine compound of the above general formula (IX), for example, triphenylphosphine, diphenylbutylphosphine, diphenyloctadecylphosphine, tris(p-tolyl)phosphine, tris(p-fluorenyl) Phenyl)phosphine, tris(naphthyl)phosphine, diphenyl-(hydroxymethyl)-phosphine, diphenyl-(ethylidylmethyl)-phosphine, diphenyl-(β-ethylcarboxyethyl -phosphine, tris(p-chlorophenyl)phosphine, tris(p-fluorophenyl)phosphine, diphenylbenzylphosphine, diphenyl-β-cyanoethylphosphine, diphenyl-(pair -Hydroxyphenyl)-phosphine, diphenyl-1,4-dihydroxyphenyl-2-phosphine, phenylnaphthylbenzylphosphine, and the like. In particular, triphenylphosphine -29-200923011 is preferably used, and the above-mentioned phosphorus-based stabilizers can be used alone or in combination of two or more. The amount of the phosphorus-based stabilizer to be used in the present invention is usually 0.001 to 1 part by mass, more preferably 0.005 to 0.5 part by mass, and more preferably 0.01 to 100 parts by mass of the polycarbonate resin of the component (A). 0.1 parts by mass. When the compounding amount of the phosphorus-based stabilizer is within the above range, the thermal stability at the time of molding can be improved. The polytetrafluoroethylene is not particularly limited as long as it has the ability to form fibrils. Here, the fibril forming ability means that the resins are bound to each other and become fibrous by an external action such as shearing force. The polytetrafluoroethylene having fibril forming ability imparts an effect of preventing melt dripping to the resin composition of the present invention, and exhibits excellent flame retardancy. Specific examples thereof include polytetrafluoroethylene and a tetrafluoroethylene copolymer (e.g., tetrafluoroethylene/hexafluoropropylene copolymer, etc.). Among these, polytetrafluoroethylene (hereinafter referred to as "PTFE") is preferred. The PTFE having fibril forming ability has an extremely high molecular weight, and is usually 500,000 or more, more preferably 500,000 to 15 million, more preferably 1 to 10 million, depending on the number average molecular weight determined from the standard specific gravity. . Such PTFE is, for example, made tetrafluoroethylene in an aqueous solvent in the presence of sodium, potassium or ammonium peroxydisulfide, at a pressure of 7 to 700 KPa, at a temperature of 22 to 0 0 ° C. 0~1 0 聚合°C is obtained by polymerization. As the P T F E ', in addition to the solid shape, the form of the aqueous dispersion can also be used. -30-200923011 As such a PTFE having fibril forming ability, it can be classified into the third type by using, for example, the ASTM specification. As a commercial item classified into the third category, for example, Teflon 6-J (trade name, manufactured by Mitsui & DuPont Fluorochemical Co., Ltd.), POLYFLON D-1, and POLYFLON F-103 (trade name, manufactured by Daikin Industries Co., Ltd.) . In addition to the third category, ALGOFLON F5 (trade name, manufactured by Monteflurous Co., Ltd.) and POLYFLON MPAFA-100 (trade name, manufactured by Daikin Industries Co., Ltd.). Polytetrafluoroethylene can be used singly or in combination of two or more. The amount of the polytetrafluoroethylene is 0.1 to 0.5 parts by mass, more preferably 0.2 to 0.4 parts by mass, per 100 parts by mass of the total of the component (A) and the component (B). As various additives, for example, an antioxidant such as a hindered phenol-based or ester-based compound, a light stabilizer such as a hindered amine-based compound, a release agent which is usually used, a charge-preventing agent, and a fluorescent whitening agent may be appropriately contained. [Light-reflective polycarbonate resin composition and molded article thereof] The light-reflective polycarbonate resin composition of the present invention can be obtained by blending and kneading the above components as needed. For blending and melt-kneading, the usual method can be used. As the melt kneading, for example, a ribbon blender, a Henschel mixer, a Banbury mixer, a drum mill, a single-axis screw extruder, and a two-axis are suitably used. Screw extruder, two-way kneader (Ko-kneader) and multi-axis screw extruder. Further, the addition of -31 - 200923011 at the time of melt kneading is generally suitable for 250 to 300 °C. The obtained light-reflective polycarbonate resin composition can be applied to various known molding methods such as injection molding, hollow molding, extrusion molding, compression molding, calender molding, and rotational molding, and can be molded into various shapes. Further, by using the light-reflective polycarbonate resin composition of the present invention, extrusion molding, heat molding or press molding is carried out to obtain a favorable molded body. As a method of thermoforming, specifically, for example, a method of heating a preliminary molded body and molding it under the pressure of vacuum and/or compressed air. Here, at the time of heating, the heat source can be directly contacted and heated from either one side or both sides of the preliminary molded body. At this time, the heating temperature is less than 150. (In the case of :, there is a case where it is impossible to form uniformly, and when it exceeds 200T: foaming is easy, and it is less desirable. The method of thermoforming is not particularly limited, for example, a simple vacuum forming method, a drape forming, a counter forming (matched die) method, pressure bubble plug assist vacuum forming method, plunger assist method, vacuum rebound forming method, pressure bubble vacuum rebound forming method, pneumatic molding method. Contact heating air pressure forming method (trapped The sheet contact heating-pressure forming method, the simple air pressure molding method, etc. The pressure during the molding is 0.1 MPa or less in the case of the vacuum molding method, and 0.3 to 0.8 MPa or less in the case of the air pressure molding method. The combined vacuum forming method and the air pressure forming method can be formed into a shape corresponding to the type, number of shapes, and uniform surface reflection of the light source by the thermoforming. The molding system has excellent heat resistance, flame retardancy, and high light reflection. It is suitable for the production of a molded article such as a light reflection plate of a liquid crystal display or a molded article or a component in the field of an optical element. - 200923011 Further, the light-reflective polycarbonate resin composition of the present invention thus obtained can be obtained by molding into a flat plate or a curved plate by a general molding method such as an injection molding method or a compression molding method. The light reflector can be used for, for example, a lighting device, a liquid crystal display backlight, etc., and is particularly suitable as a reflector for a liquid crystal display backlight. The light reflector of the present invention does not contain a bromine compound in the material. It is excellent in light resistance, and it has little reduction in reflectance, exhibits good characteristics, and the like, and exhibits excellent characteristics which are not conventionally used, even when used for a long period of time. Furthermore, the light-reflecting body of the present invention contains no bromine compound and is resistant to light. It is excellent in properties, and it has a small decrease in reflectance, exhibits good characteristics, and the like, and has excellent characteristics not conventionally used even when used for a long period of time. The light-reflecting body of the present invention has a reflectance (Y) of 90% and a thickness of 1 mm. The light transmittance is 0.6% or less. The reflectance (Y) and the total light transmittance (%) are described later in the examples, but by reflection. It is preferable that the reflection characteristic obtained by the device is 9% or more in terms of Y値, and in order to prevent a decrease in the brightness (irradiation rate) of the illumination device caused by leakage of light, it is desirable that the total light transmittance at a thickness of 1 mm is 0.6. % or less. When the Y 値 is 90% or more and the total light transmittance is 0.6% or less, the illuminating device cover having both reflectors has excellent reflection characteristics of the reflector and brightness (irradiation rate) of the illuminating device. In the light reflector of the present invention, Y値 is more preferably 95% or more, more preferably 97% or more, and the total light transmittance at a thickness of imm is more preferably 3% or less, and more preferably 〇·1% or less. . - 33 - 200923011 EXAMPLES The present invention will be described in more detail by way of examples, but the invention is not limited to the examples. <Production Example> <Production Example 1 of Copolymer> [Synthesis of polytetramethylene glycol-bis(4-hydroxybenzoate): average molecular weight of Ptmg chain 2000] Under nitrogen, 'polybutanediol (PTMG, Mn = 2000) 1 part by mass and 16 parts by mass of methyl p-hydroxybenzoate, heated to 210 in the presence of 5 parts by mass of dibutyltin oxide. (:, methanol was distilled off. The inside of the reaction system was depressurized, and the remaining methyl p-hydroxybenzoate was distilled off. After the reaction product was dissolved in dichloromethane, 8 mass% of carbonic acid was added to the dichloromethane solution. An aqueous solution of sodium hydrogen was mixed vigorously for 2 minutes, and the dichloromethane phase was taken by centrifugation. The dichloromethane phase was concentrated under reduced pressure to obtain polytetramethylene glycol-bis(4-hydroxybenzoate). By high-speed liquid chromatography (HPLC), the results of p-hydroxybenzoic acid, p-hydroxybenzoic acid methyl ester were quantified, p-hydroxybenzoic acid was 1 〇 襄 襄 PPm, p-hydroxy benzoic acid methyl ester The measurement method for HPLC is to use a DS'3 column made by GL Scientific Co., Ltd., with a column temperature of 40 ° C, a 0.5% phosphoric acid aqueous solution and a 1: 2 mixed solvent of the sodium s. 1. Measured in the condition of 〇ml/min. Dingli is calculated according to the calibration curve of 檩 檩. -34- 200923011 〈Manufacturing Example 2 of Copolymer> [Polybutylene glycol-bis(4-hydroxybenzene) Synthesis of formate): average molecular weight of PTMG chain = 1 00 0] (PTMG, Mn = 1000) was carried out in the same manner as in Production Example 1 except that 100 parts by mass and methyl p-hydroxybenzoate were 33.4 parts by mass. The p-hydroxybenzoic acid was 1 〇 ppm by mass or less, and p-hydroxybenzoic acid was used. Methyl ester was 0.3% by mass. <Production Example 3 of Copolymer> &gt; [Synthesis of polytetramethylene glycol-bis(4-hydroxybenzoate): average molecular weight of PTMG chain = 600] In addition to polytetramethylene glycol ( In the same manner as in Production Example 1, except that PTMG and Mn = 600) were 100 parts by mass and methyl p-hydroxybenzoate was 50 parts by mass. The p-hydroxybenzoic acid was 1 〇 ppm by mass or less, and p-hydroxybenzoic acid was used. Methyl ester was 0.2% by mass. <Production Example 4 of Copolymer> [Synthesis of polytetraethylene glycol-bis(4-hydroxybenzoate): average molecular weight of PTEG chain = 1 000] Except polytetraethylene glycol ( In the case of 100 parts by mass of PTEG and Mn = 1000) and 33.4 parts by mass of methyl p-hydroxybenzoate, it was carried out in the same manner as in Production Example 1 -35-200923011. The p-hydroxybenzoic acid was 10 ppm by mass or less, and - Methyl hydroxybenzoate is 0.3% by mass. <Manufacture of Polycarbonate Oligomer Solution> 5 In a 6 mass% aqueous sodium hydroxide solution, 2000 ppm of sodium disulfoxide sulfonate was added to the later dissolved bisphenol A (BPA), and BPA was dissolved in the BPA concentration to 13.5% by mass to prepare hydrogen of BPA. An aqueous solution of sodium hydroxide, the aqueous solution of sodium hydroxide of BPA was flowed at a flow rate of 40 liters/hour, dichloromethane at a flow rate of 15 liters/hour, and phosgene was continuously passed through a flow rate of 4.0 kg/hour through an inner diameter of 6 mm and a tube length. 30m tubular reactor. The tubular reactor has a sheath portion, and the cooling water is passed through the sheath to keep the temperature of the reaction liquid at 4 (TC or less. The reaction liquid flowing out of the tubular reactor is continuously introduced into the inner volume having the receding wing by 40L. A trough type reactor equipped with a baffle, at this time, a BPA sodium hydroxide aqueous solution of 2.8 liter / hr, a 25 mass % sodium hydroxide aqueous solution 〇 〇 7 liter / hour, water 17 liter / hour, 1 mass % three The reaction was carried out by withdrawing 0.64 L/hr of an aqueous solution of ethylamine. The reaction liquid overflowing from the tank reactor was continuously taken out, and the aqueous phase was separated and removed to obtain a dichloromethane phase. The polycarbonate oligomer thus obtained had a concentration of 329g/L, chloroformate group concentration is 0.74 mol/L. <Manufacture of polycarbonate copolymer PCC1> 50L groove type anti-36- 200923011 with barrier plate, paddle stirring blade and cooling jacket In the reactor, 15 L of the polycarbonate oligomer solution prepared above, 8.9 L of dichloromethane, and 325 g of polybutanediol bis(4-hydroxybenzoate) produced above (average molecular weight of PTMG chain = 2000) and 8.7 ml of triethylamine, adding 6.4% by mass of hydrogen under stirring 1710 g of an aqueous solution of sodium oxide, and a reaction of a polycarbonate oligomer with polytetramethylene glycol-bis(4-hydroxybenzoate) for 10 minutes. In the polymerization solution, p-butyl phenol (PTBP) was added. a dichloromethane solution (PTBP 225 g dissolved in dichloromethane 2.0 L), BPA sodium hydroxide aqueous solution (NaOH 617 g and sodium disulfoxide sodium 1.9 g dissolved in water 9.0 L aqueous solution, BPA 930 g dissolved), The polymerization reaction was carried out for 50 minutes. After adding 15 L of the diluted dichloromethane, the mixture was stirred for 10 minutes, and then the organic phase containing the polycarbonate and the aqueous phase containing excess BPA and NaOH were separated, and the organic phase was separated. The ester solution of methylene chloride was washed successively with 15% by volume of 〇.〇3 mol/liter NaOH aqueous solution, 0.2 mol/L hydrochloric acid, and then washed repeatedly with pure water to make the washed The conductivity in the aqueous phase is 0_01/z S/m or less. The dichloromethane solution of the polycarbonate obtained by washing is concentrated and pulverized, and the obtained flakes are dried under reduced pressure at 100 ° C. Polybutanediol-bis(4-hydroxybenzoate) obtained by NMR The amount of the residue is 4.0% by mass. The viscosity number measured according to ISO 1 628-4 (1 999) (the viscosity is determined in the same manner below) is 38.1 (Mv = 13,500). -37- 200923011 <Polycarbonate copolymerization Manufacture of PCC2> In addition to polybutylene glycol-bis(4-hydroxybenzoate) 325g (average molecular weight of PTMG chain = 2000) was changed to polytetraethylene glycol-bis(4-hydroxybenzoate) 163g ( The average molecular weight of the PTEG chain = 1000) was carried out in the same manner as in the production of PCC1. The amount of the polytetraethylene glycol-bis(4-hydroxybenzoate) residue determined by NMR was 2.0% by mass. The viscosity number is 38.0 (Mv = 1 3,500). <Manufacture of Polycarbonate Copolymer PCC3> In addition to the addition amount of polytetramethylene glycol-bis(4-hydroxybenzoate) (average molecular weight of PTMG chain = 2000) was changed to 813 g, and the amount of hydrazine was changed to 246 g, the drying temperature was changed from 100 ° C to 80 ° C, and was carried out in the same manner as in the production of PCC1. The amount of the polytetramethylene glycol-bis(4-hydroxybenzoate) residue determined by NMR was 10.7% by mass. The viscosity number is 35.6 (Mv=12,400). <Production of Polycarbonate Copolymer PC C4> In addition to polytetramethylene glycol-bis(4-hydroxybenzoate) (average molecular weight of PTMG chain = 2000) 325g was changed to polytetramethylene glycol-bis(4-hydroxyl) Benzate) (average molecular weight of PTMG chain = 600) 813 g, the amount of PTBP used was changed to 213 g, and the drying temperature was changed to 8 (other than TC, the same as the production of PCC1 - 38-200923011). The amount of the polytetramethylene glycol-bis(4-hydroxybenzoate) residue was 9.9% by mass. The viscosity number was 39.6 (=^^=14,200). <Manufacture of polycarbonate copolymer PCC5> With barrier In the 50L tank reactor of the plate, the paddle stirring blade and the cooling jacket, the number of repeats of the polycarbonate oligomer solution 15L, 8.9 L of dichloromethane and dimethyl decyloxy unit prepared above was 90 aryl phenol end-modified PDMS 625 g and triethylamine 8.7 ml 'After stirring, 6.4% by mass aqueous sodium hydroxide solution 1 3 9 0 g was added, and the polycarbonate oligomer was subjected to 1 〇 minute. Aromatic phenolic end-modified PDMS reaction. In the polymerization solution, PTBP in dichloromethane solution (PTBP172g dissolved in two) A 2.0% aqueous solution of BPA) and a sodium hydroxide aqueous solution of BPA (6.2 g of NaOH and 2.2 g of sodium disulfoxide dissolved in an aqueous solution of 8.3 L of water to dissolve BPA1 1 16 g) were subjected to a polymerization reaction for 50 minutes. After stirring for 15 minutes with 15 L of dichloromethane, the organic phase containing the polycarbonate and the aqueous phase containing excess BPA and NaOH were separated, and the organic phase was separated. The thus obtained polycarbonate solution of the polycarbonate was The solution was washed successively with 15% by volume of 0.03 mol/liter NaOH aqueous solution and 0.2 mol/L hydrochloric acid, and then repeatedly washed with pure water to make the conductivity in the washed aqueous phase 0.01//S/m. -39- 200923011 The dichloromethane solution of the polycarbonate obtained by washing is concentrated and pulverized, and the obtained small sheet is dried under reduced pressure at 110 ° C. The PDMS obtained by NMR The amount of the residue is 1 〇.% by mass. The viscosity number is 41.5 (Mv = 1 5,000 ). <Example> Physical property measurement and evaluation of the resin composition were carried out by the following method: (1) Q 値The granules were dried at 1200 ° C for 5 hours with hot air, and the overhead type was used. The flow rate measuring device measures the amount of molten resin (ml/sec) flowing out from a nozzle having a diameter of 1 mm and a length of 10 mm according to JIS K7210 at a pressure of 2,80 ° C and a pressure of 15.7 MPa, and at the same time, the melt viscosity is lowered. , the outflow 値 (Q値) increases.

(2) Reflectance Y · Yellow index YI The obtained pellets were dried by hot air at 1,200 ° C for 5 hours, and then a molding machine [manufactured by Sumitomo Heavy Industries Co., Ltd., Sumitomo NESTAR N515/150] was used at 300 ° C. The molding temperature and the mold temperature of 80 ° C were used to prepare a flat plate for measuring reflectance of I40 mm x 1 40 mm X 3·2 mm. The reflectance and the yellowness index were evaluated by an LCM spectrophotometer MS2020PLUS (manufactured by Macbeth Co., Ltd.) according to Y値 and YI値. (3) Total light transmittance (%) -40- 200923011 Using a molding machine [Sumitomo Heavy Industries Co., Ltd., Sumitomo Nestar N515/150], 80 mm X was produced at a molding temperature of 300 ° C and a mold temperature of 80 ° C. 8 0mm X 1.0mm flat panel for measuring total light transmittance. According to JIS K7 105, the parallel light transmittance was measured by a tester manufactured by Nippon Denshoku Industries Co., Ltd. (4) Viscosity average molecular weight difference (ΔΜν) The difference in viscosity average molecular weight (ΑΜν) from the raw material polycarbonate was determined. The obtained granules were dissolved in a dichloromethane solution, and the insoluble components were removed by a filter, and evaporated to prepare a film, which was again dissolved in a dichloromethane solution, and the viscosity was measured by a capillary viscometer at 2 Ot. After obtaining the ultimate viscosity [], the following formula is calculated. [V] = 1.23x1 0'5Mv° 83 (5) Evaluation of the appearance of the molded body Using an injection molding machine [manufactured by Sumitomo Heavy Industries, Inc., SH1 00], a box having two holes (1 mm φ ) was simultaneously used in the molding machine. Shaped mold (size: 107mmxl52mmxl0mm, wall thickness: 2mm), designed to achieve a molding temperature of 300 ° C, mold temperature of 80 ° C, 1300 seconds of cooling time (molding cycle time of 1 60 seconds) In the case of producing a molded article in which the residence time is extended, the molded body is visually judged to have an appearance (whether or not silver is generated). In the case where no silver is produced, 情况 'the case where silvering is rare is Δ, and the case where silvering occurs is X ′. -41 - 200923011 (6) Carrying frame molding test The obtained granules were dried at 1 2 (TC, 5 hours hot air, and then SG100M-HP manufactured by Sumitomo Heavy Industries Co., Ltd., at 280, 290, 300, 3 1 0 °C The molding temperature and the mold temperature of 80 °C were used to produce a molded body in which the frame for a mobile phone shown in Fig. 1 was molded, and the lowest temperature at which molding was possible was evaluated, and the case where it was impossible to form was X. Further, for 3 1 0 °C molded body. The warpage of the molded body was visually evaluated. The evaluation criteria for warpage were 无 without warping, △ with little warpage, and X with warpage, and molding was not possible. In the case of the body, the ((7) flame retardancy evaluation test was carried out by drying the obtained pellets at 1,200 ° C for 5 hours, and then using the NESTAR N515/150 manufactured by Sumitomo Heavy Industries Co., Ltd. at a molding temperature of 300 ° C. 80. (: mold temperature, a test piece for burning test of 127 mm x 12 mm x 1 mm thickness was produced. The test piece produced was evaluated by the UL94 flame retardancy test. Moreover, the so-called UL94 flame retardancy test (vertical burning test) was attached to Maintain a vertical test piece of a predetermined size, by the burner The residual flame time after indirect combustion of the flame for 10 seconds, the method for evaluating the flame retardancy 'V-0 test qualified condition is 〇, V-0 test failure condition is X ° <Example 1~2 4 and comparison Examples 1 to 7> -42- 200923011 In the following Tables 1 to 4, the components used are as follows: • (A) Component (A-1) Component: Polycarbonate Copolymer PCC1 to 4 (by manufacturing example) Manufacturer) (A-2) Ingredients: Polycarbonate-polydimethyloxane copolymer TARFLON FC1700 (manufactured by Idemitsu Kosan Co., Ltd., Mv=l 7,5 00 &gt; PDMS content 3 _5 mass %) PCC5 (Manufactured by the manufacturer) (Α-3) Ingredients: Polycarbonate resin TARFLON FN1700 (manufactured by Idemitsu Kosan Co., Ltd., Μν=17,500) TARFLON FN1500 (manufactured by Idemitsu Kosan Co., Ltd., Μν = 14,200) 1 · ( Β ) Ingredients 'Oxide powder PF726 (made by Ishihara Sangyo Co., Ltd., trade name: PF726, average particle size 0 _ 2 1 // m ) PC3 (made by Ishihara Sangyo Co., Ltd., trade name: PC3, average particle size 0.21 β m ) 223 3 ( KRONOS company, trade name: 223 3) • (C) Ingredients: organic polyoxane BY-16-161 (Dongli. Dow Corning company, trade name: BY-16 - -43- 200923011 161 ) • (D) Ingredients: Flame retardant MR-01 (manufactured by company KANEKA, trade name: MR-01) • Plasticizer KLB 635 (made by Kao Corporation, trade name: KLB-635) • Difficult Combustion aid: Polytetrafluoroethylene (PTFE) PTFE (manufactured by Asahi Glass Co., Ltd., trade name: CD076) Various commercially available polycarbonate-polydimethyloxane copolymers, various commercially available polycarbonates are used. The ester resin, titanium oxide, organic siloxane, PTFE, and the blending ratio shown in the table were prepared by a two-axis extruder (TEM-35B, manufactured by Toshiba Machine Co., Ltd.) with a vent hole at a temperature of 2 The mixture was granulated at 80 ° C. The obtained pellets were measured and evaluated based on the physical properties of the above (1) to (7), and the results are shown in Tables 1 to 4. Further, Tables 1 and 2 are not formulated with a flame retardant, and Tables 3 and 4 are examples and comparative examples of blending a flame retardant. -44 - 200923011 i Example ίο 1 〇〇〇〇 8 8 8 ο ο α o 〇 oo O Wear % SS kiosk &lt;3 Fees Example 9 1 9 〇〇〇〇ο s ο ο eo 〇 ee Θ SS; SS early &lt; 〇Example 8 1 〇〇〇S3 e ο ο s S ο es Μ ooo 苒SS § &lt; § 〇 Example 7 | 〇〇〇σ ο 8 η sd ο e cs 5 oee S 3 § Drought and Flood Example 6 | 9 〇〇〇ο ο S3 δ s ο ο oo CM ooo &amp; S 3 -150 〇§ 〇 Example 5 | e 〇〇ο ο 8 8 s ο ο oosooo Male % SS实施例例4 〇〇〇ο ο δ 9 s ο O ssooo SS 5 〇η &lt; Example 3 δ 〇〇〇ο ο 筘 s ο o 3 oeo 3 S 5 〇ο &lt; Example 2 | 〇〇〇ο ο 8 8 δ ο o S oeo S 5 5 早〇i 〇Example 1 9 〇〇〇ο ο δ 8 S δ ο o S ooo Article S 5 Early Quality Quality Quality Quality _ Quality | Mass mass m 〇 reflectance γ (%) yellow index Υ 1 total light transmittance (%) viscosity average molecular weight difference ΔΜν | external 観 (visual ) The frame temperature of the mobile phone can be molded rc) The frame of the mobile phone is molded at 310 °C. PCC1 I PCC2 1 PCC4 FCI7D0 1 ί FNt700 FN1SOO (A) Total 1 ΡΡ72β 1 § 1 (8) Total I BY-1M61 MR-01 1 CO -079 (A-1) (Α-2) (Α-3) Titanium oxide I organooxane flame retardant I i § ss § Plasticizer 1 | Inflammability aid resin composition molding 雔Μ Per% - 45- 200923011 .i-' &lt;N« Comparative Example 6 | 〇ο ο e ο δ δ δ soo δ s ο CO ο tn 5 ? X ο Smoke &lt; Comparative Example 5 I a ο ο ο ο ο δ S sseoso ο - ο «D α» 3 5 early X ο ο X Comparative Example 4 1 〇ο ο ο σ ο ο δ ssoo St ο ο ο CO sss Early 1 XI Comparative Example 3 〇ο ο ο ο ο δ CD Bu Ying « 4 oo CM 3 e Ο e £3 sss I ο η &lt; Comparative Example 2 〇ο e ο e ο 8 Ο soeoos ο Ο ο S 8 Dr IIX Comparative Example 1 〇ο ο ο ο ο δ S ssoos § ο ο ο Ss 5 early IXI quality I quality | quality I g* II quality I ι quality ι ι mass ι 1 mass 1 filling 反射 reflectivity Y (%) yellow index YI total light transmittance (%) | viscosity Average molecular weight difference ΔΜν Appearance (visual) 1 Temperature at which the frame of the mobile phone can be molded (ec) Warp formed by the frame of the mobile phone at 310 °C PCCt 1 S 8 PCC3 1 I \ 1 FN1700 I § (8) Total I PR26 I § i "(8) Total I BY-lft-161 MR-01 I KLB635 1 CD-076 1 (Α-2) (Α-3) I Titanium Oxide | Organic Oxane 1 Flame Retardant 1 ϊ δ § I Plasticizer I Flame Retardant Additive resin composition molded body η m Η -46- 200923011 e* Example 18 1 wear e ο Ο ο ο S δ 8 δ ο ο S s O 3 osss 5 Ο ο Ο Example 17 1 〇ο δ Ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο e S ο δ ο ο ο 8 s ο Ο 8 N ooos 9 CO ms Q &lt; S ο ο Example 14 | 9 e ο ο δ ο ο S 8 s ο ο S eeos ο s 3 5 ο § ο ο Implementation Example 13 1 5 ο ο ο ΙΟ ο ΙΟ SS ο ο S 2 ooo So s 3 ο 。 。 实施 实施 实施 实施 实施 实施 实施 实施 实施 SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS ο 实Example 11 1 9 ο ο ο δ ο ο δ St ο e ο ο 〇 oooo 苒g. « sf &lt; § ο ο , Quality I Quality I Quality 丨 Quality II m \ Quality 1 Quality 1 1 Quality I Reflectance Y ( %) Yellow index YI 1 Total light transmittance (%) Viscosity average molecular weight difference ΔΜν External (visual) Cell phone frame moldable temperature rc) Renting P 〇cn m Yang m Flame retardant PCC1 PCC2 1 ί FC1700 1 FN1700 1 FN1SD0 m count PR26 § 2233 CB) total I BY-lfr-161 I MFH&gt;1 1 KIB635 I CD-076 / &lt; (Α-2) (Α-3) ι Titanium oxide 1 Organic oxane flame retardant Agent 1 | PTFE 3 ms Plasticizer | Flame Retardant Resin Resin Composition Molded Body 15 - 47 - 200923011 Inch « Comparative Example 7 1 9 〇Ο ο ο ο δ δ S soe δ ο oooss» s 5 ο ο Example 24 | 9 e ο ο 筘ο ο 3 soo δ s - oon 9 ss ο ο g ο 〇 Example 23 | 9 〇ο ο ο ο δ S oooes in oo S Sb ns early ο g ο 〇 Example 22 9 〇ο ο ο ο δ S oooes to oon A s Μ early ο I ο 〇m 港舾9 〇ο ο ο η S soo δ s - oos 9 s 5 -250 ο feeο 〇 Example 20 1 9 〇ο ο ο ο δ δ δ oo 8 s to oeo 苒ss 5 early ο ο 〇 Example 19 | 9 ee ο ο ο δ δ S soos 5 oo 3 η ss 5 ο g ο 〇mass 1 mass 1 mass 1 mass 丨I mass | quality | _I l mass i I mass s reflectance Y (%) yellow index YI total light transmittance (% Viscosity average molecular weight difference ΑΜν Appearance (visual) Cellular frame moldable temperature (°C) Cell phone frame 310°c molded warp flame retardant PCC1 I PCC2 i 1 FC1700 ! PCC5 FN1700 FN1S00 (Α) Total 1 PF726 1 1 (8) Total I BY-J6-16I I MFH)1 i KLB635 I CXJ-076 (A-1) (Α-2) (Α-3) Titanium oxide I organooxane flame retardant II FTFE ss § Plastic Agent|Flame-resistant auxiliary resin composition molded body 1 昼ife m -48- 200923011 The following can be determined from Tables 1 to 4. <1> From Examples 1 to 1 and Comparative Examples 1 to 6, it was found that the (A-1) polycarbonate copolymer can be particularly excellent in fluidity, thermal stability, dimensional stability, and A material that looks good in appearance. <2 &gt; From Examples 1 to 24 and Comparative Example 7, it was found that by containing (A-2) polycarbonate-polyorganosiloxane polymer, even if it contains no flame retardant, it can become heat stable. Material, dimensional stability and flame retardant materials. INDUSTRIAL APPLICABILITY The light-reflective polycarbonate resin composition of the present invention has excellent fluidity and thermal stability, and the molded article of the resin composition has good light reflectance, dimensional stability, and appearance. It is used in the field of high light reflectivity which is mainly used in the field of light reflection plates, sockets, reflection members of illumination devices, optical elements including light reflection members, and the like. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a molded body in which a frame for a mobile phone is molded. -49-

Claims (1)

200923011 X. Patent Application No. 1. A light-reflective polycarbonate resin composition characterized by containing a polycarbonate resin (A) and a white pigment (b), wherein the polycarbonate resin (A) has a lower content The repeating unit represented by the general formulae (I) and (11) is a polycarbonate copolymer (a_i) having a content of the formula (II) of from 丨 to 3〇% by mass and a viscosity of from 30 to 71, and (a) The ratio of the composition to the content of (B) is 99: 1 to 50: 50 by mass ratio [Chemical 1] [wherein R1 and R2 are each independently an alkyl group having 1 to 6 carbon atoms, X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylene group having 2 to 8 carbon atoms (alkyhdene), and a carbon number of 5 a cycloalkyl group to 15, a cycloalkylene group having 5 to 15 carbon atoms, _s-, -so-, -S〇2_, _〇..._co_ linkage, or the following formula (ΠΙ) or the following formula (IV) The group represented by R3 and R4 is independently a carbon number of 1 ?? $3 of the alkyl group '' is a linear or branched chain of 2 to 15 carbon atoms, 兀, a to d are respectively 〇 to an integer of 4, η is an integer from 2 to 200, and 'R1 and R2' of the plural or R3 and R4 of the plural may be the same or different from each other] -50- 200923011 mi 2. The light-reflective polycarbonate resin composition of claim 1, wherein the total amount of the polycarbonate resin (A) and the white pigment (B) is 100 parts by mass The alkane (C) is 0.05 to 3 parts by mass. 3. The light-reflective polycarbonate resin composition according to claim 1 or 2, wherein the 'white pigment (B) is titanium oxide. 4. The light-reflective polycarbonate resin composition according to claim 1 or 2, wherein the 'polycarbonate resin (A) 尙 contains polycarbonate _ polyorganosiloxane mixture (A·2) . 5. The light-reflective polycarbonate resin composition of claim 4, wherein in the polycarbonate-polyorganosiloxane mixture (A-2), the polyorganic sand oxide part is contained 〇·1 to 10% by mass. 6. The light-reflective polycarbonate resin composition according to claim 1 or 2, wherein the 'polycarbonate resin (A) 尙 contains an aromatic polycarbonate resin (A-3) ° 7. The light-reflective polycarbonate resin composition of the first or second aspect, wherein 'the total amount of the polycarbonate resin (A) and the white pigment (B) is 1 part by mass '尙 contains a flame retardant (D) ) 0.1 to 5 parts by mass. A molded article of the present invention is characterized in that the light-reflective polycarbonate resin composition according to any one of claims 1 to 7-51 to 200923011 is molded. 9. The molded article of claim 8 which is a light reflector 〇10. The molded article of claim 9 wherein the reflectance (Y) is 90% or more and the total light is 1 mm thick. The transmittance is 0.6% or less. -52-