JPH06313101A - Polycarbonate resin composition - Google Patents

Abstract

(57) [Summary] [Purpose] To develop a polycarbonate resin composition having excellent flame retardancy, mechanical strength, and releasability. [Structure] (A) Main chain is (a) General formula (I) The repeating unit I represented by: (b) General formula (II) The repeating unit II represented by and (c) the general formula (III): In addition to having a structural unit III represented by the general formula (IV) [Each symbol in the formula is as defined in the description. ] A polycarbonate-polyorganosiloxane copolymer consisting of the terminal group IV of the polyhalogenophenoxy group and (B) a polycarbonate resin composition consisting of polytetrafluoroethylene having fibril-forming ability.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a polycarbonate resin composition. More specifically, it relates to a polycarbonate resin composition having excellent flame retardancy, mechanical strength and releasability.

[0002]

2. Description of the Related Art Conventionally, various flame-retardant halogen-containing copolycarbonates have been proposed. For example, Japanese Patent Publication No. 46-40715 and Japanese Patent Publication No. 47-24660.
Japanese Patent Publication [Tetrabromobisphenol A (TBA) and Bisphenol A (BPA) Copolymer], JP-A-51
-123294 (copolymer of tetrabromobisphenol sulfone (TBS) and BPA), JP-A-51
No. 136796 [Copolymer of statistical mixture of halogenated bisphenol and BPA], JP-A-52-14
No. 0597, JP-A-54-50065 [Copolymer of thiodiphenol (TDP) and BPA, tetrabromobisphenol A (TBA) and bisphenol A]
Blend with (BPA) Copolymer], JP-A-56-
No. 99226 [Tetrabromothiodiphenol (T
BTDP) and BPA copolymer] and the like are known. These copolymers are obtained by copolymerizing halogenated bisphenols in which the benzene nucleus of bisphenols is substituted with halogen in order to contain the amount of halogen required to impart flame retardancy. However, both of them have a problem that these halogenated bisphenols must be used in a relatively large amount, and accordingly, the mechanical strength (particularly impact resistance strength) of the polycarbonate must be sacrificed. Other halogen-containing polycarbonates are also known in Japanese Examined Patent Publication No. 46-40715 [using halogenated phenols as terminal terminators]. However, also in this case, it is not possible to impart both flame retardancy and mechanical strength. As a method of improving the above-mentioned drawbacks, a method of copolymerizing BPA and a halogenated bisphenol by using polyhalogenophenol as an end terminating agent [eg, JP-A-64-79]
No. 227, Japanese Patent Application Laid-Open No. 64-79228, Japanese Patent Application Laid-Open No. 3-200833, etc.] are known. With this method, it is possible to impart flame retardancy and impact strength at the same time, but as a result of further research by the present inventors, a polycarbonate resin composition having excellent flame retardancy and mechanical strength was obtained. Was successfully developed.

[0003]

Means for Solving the Problems That is, using a polyhalogenophenol as a terminal stopper, a polycarbonate-polyorganosiloxane copolymer obtained by copolymerizing bisphenols and halogenated bisphenols, and further polyorganosiloxane, It has been found that a polycarbonate resin composition prepared by blending a fluororesin has intended properties. The present invention has been completed based on such findings.

In the present invention, the main chain (A) is (a) the general formula (I).

[0005]

[Chemical 5]

[In the formula, R ¹ and R ² each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and may be the same or different. ] The repeating unit I represented by the formula (b) general formula (II)

[0007]

[Chemical 6]

[In the formula, R ³ and R ⁴ each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and may be the same or different. Also, X ¹ ~
X ⁴ each represents a halogen atom. ] The repeating unit II and (c) the general formula (III)

[0009]

[Chemical 7]

[Wherein R^Five~ R⁸Is the hydrogen source
Child, an alkyl group having 1 to 6 carbon atoms or a phenyl group
But they may be the same or different
Yes. Also, R ⁹And R^TenAre respectively aliphatic or aromatic
Represents an organic residue containing a group, A is -O-, -NH- or
Indicates a single bond. k is an integer of 1 to 500. ]]
Of the general formula (IV)

[0011]

[Chemical 8]

[In the formula, X ⁵ represents a halogen atom, and m is an integer of 1 to 5. When m is plural, plural X
Each ⁵ may be the same or different. ] The end group IV of the polyhalogenophenoxy group represented by
A polycarbonate resin composition comprising 1 to 99% by weight of a polycarbonate-polyorganosiloxane copolymer and 0.01 to 2 parts by weight of (B) fibril-forming polytetrafluoroethylene. Is.

The polycarbonate resin composition of the present invention is prepared.
Component (A) Polycarbonate-Polyorgano
Roxane copolymer (hereinafter abbreviated as PC-PDMS copolymer)
You ) Is represented by the general formula (I) in which the main chain is the component (a).
Represented by the general formula (II), which is the repeating unit I and the component (b)
Repeating unit II and a general formula (III) which is the component (c)
In addition to having a structural unit III represented by the general formula (IV)
The end group IV of the polyhalogenophenoxy group represented by
It is something. Here, the repetition represented by the general formula (I)
R in unit I¹And R²Are hydrogen atom or charcoal, respectively
Alkyl groups of prime number 1 to 4 (methyl group, ethyl group, propyl group
Group, butyl group), even if they are the same
It may be one. Further, the repeating represented by the general formula (II)
X in return unit II¹~ X^FourAre bromine atom and chlorine, respectively
Indicates a halogen atom such as atom, fluorine atom, iodine atom, etc.
You This X¹~ X ^FourAre different even if they are the same
May be, but is usually the same
There are many. And in the repeating unit II represented by the general formula (II)
R³And R^FourFor the above R¹And R²alike
Each is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms (
(Cyl group, ethyl group, propyl group, butyl group)
They may be the same or different. Change
In the structural unit III represented by the general formula (III)^Five~ R
⁸Are a hydrogen atom and an alkyl group having 1 to 6 carbon atoms, respectively.
(Methyl group, ethyl group, propyl group, n-butyl group, a
Sobutyl group, amyl group, isoamyl group, hexyl group
Etc.) or a phenyl group. This R^Five~ R⁸Is it
They may be the same or different. Also,
R⁹And R^TenMeans that each contains aliphatic or aromatic
Represents a functional residue, and A represents -O-, -NH- or a single bond.
You k is an integer of 1 to 500, preferably 5 to 400
It This PC-PDMS copolymer has a molecular terminal position,
The terminal group IV represented by the general formula (IV) at both terminal positions,
A polyhalogenophenoxy group is attached. This general
X in the terminal group IV represented by the formula (IV)^FiveIs the above X¹~ X^Four
As in the case of, bromine atom, chlorine atom, fluorine
Represents a halogen atom such as an atom or an iodine atom, and m is 1 to 5
Is an integer. When m is plural, plural X^FiveAre each
It may be the same or different. The above
X in the repeating unit II represented by the general formula (II)¹~ X^FourAnd one
X in the terminal group IV represented by the general formula (IV)^FiveIs the same
Or it may be different. This PC-PDMS
The copolymer has the above repeating unit I, repeating unit II and structure
Has unit III and has terminal positions (preferably both terminal positions)
End) the polyhalogenophenoxy group of terminal group IV was bound to
The repeating unit I, the repeating unit II and the structure
Random copolymer, block copolymer, copolymer of building block III
There are various types such as mutual copolymers.

In this PC-PDMS copolymer,
The proportion of the repeating unit II represented by the general formula (II), which is the component (b), is 1 to 10 mol%, preferably 2 to 8 mol% with respect to the total amount of the repeating unit I and the repeating unit II. is there.
If the proportion of the repeating unit II is less than 1 mol%, the flame retardancy-improving effect is not observed. Further, if it exceeds 10 mol%, mechanical strength such as impact resistance decreases. In addition, the structural unit represented by the general formula (III) which is the component (c)
The proportion of III is 0.1 to 10% by weight, preferably 0.2 to 8% by weight, based on the total amount of repeating unit I, repeating unit II and structural unit III. If the ratio of the structural unit III is less than 0.1% by weight, mechanical strength such as impact resistance is lowered. Further, if it exceeds 10% by weight, the heat resistance is deteriorated, which is not preferable. And its viscosity average molecular weight is 10,0
00-50,000, preferably 12,000-40,000
Is. When the viscosity average molecular weight is less than 10,000, the mechanical strength such as impact resistance decreases. On the other hand, when it exceeds 50,000, the fluidity is lowered and the moldability is deteriorated, which is not preferable. The content of halogen atoms in this PC-PDMS copolymer is at least 4% by weight, preferably at least 4.5% by weight. When the content of halogen atoms is less than 4% by weight,
The flame retardance is lowered, which is not preferable.

Examples of an efficient and preferable method for producing such a PC-PDMS copolymer include, but are not limited to, the following methods. First, in the presence of a known acid acceptor and molecular weight modifier in a solvent such as methylene chloride, if necessary, the following general formula (V)

[0016]

[Chemical 9]

[In the formula, R ¹ and R ² are the same as defined above. ] The bisphenols represented by and phosgene are reacted with each other to cause substantially all of the phosgene in the reaction system to react to produce a polycarbonate oligomer (hereinafter abbreviated as PC oligomer). This PC oligomer has a repeating unit I represented by the general formula (I) which is formed by the reaction of bisphenols and phosgene in the polycondensation reaction. That is, the PC oligomer having the repeating unit I represented by the general formula (I) is reacted with 100 bisphenols at a molar ratio of phosgene 110 to 150. Usually, in this reaction, bisphenols are added in an alkaline aqueous solution, and the mixture is stirred with a solvent such as methylene chloride, chlorobenzene, chloroform, carbon tetrachloride, etc. and, if necessary, a catalyst such as triethylamine or trimethylbenzylammonium chloride at a predetermined ratio. Then blow phosgene into it for 1 to 3 hours at a reaction temperature of 3
It can be produced by proceeding the interfacial polycondensation reaction at 0 to 70 ° C. At this time, the reaction system generates heat, so it is preferable to cool with water or ice. Moreover, since the reaction system shifts to the acidic side as the reaction progresses, it is preferable to maintain the pH at 10 or more by adding an alkaline compound while measuring with a pH meter. P obtained in this way
The C oligomer has an average molecular weight of 2,000 or less and is 1 to 1
It is a zero-mer.

Then, after reacting substantially all of the phosgene in the reaction system, the PC oligomer having the repeating unit I represented by the general formula (I) is added to the following general formula (VI).

[0019]

[Chemical 10]

[In the formula, R ³ , R ⁴ and X ^{1 to} X ⁴ are the same as defined above. ] An alkaline aqueous solution of tetrahalogenobisphenols represented by the following general formula (VII)

[0021]

[Chemical 11]

[In the formula, X ⁵ and m are the same as defined above. ] An alkaline aqueous solution of polyhalogenophenol represented by the following formula and a catalyst such as triethylamine or trimethylbenzylammonium chloride are mixed and stirred at a predetermined ratio to perform polymerization, and a polycarbonate copolymer oligomer (hereinafter abbreviated as PC copolymer oligomer). To manufacture.
This PC copolymer oligomer is based on 100 bisphenol units in the PC oligomer, tetrahalogenobisphenols 1.2 to 14 and polyhalogenophenol 0.3.
Obtained by reacting at a molar ratio of ˜6.0. The PC copolymer oligomer obtained has the repeating unit II represented by the general formula (II) and the repeating unit I represented by the general formula (I), which are formed by the reaction with tetrahalogenobisphenols in the above reaction. Have. Here, as the bisphenols represented by the general formula (V),
For example, 4,4'-dihydroxydiphenyl; 2,2-
Bis (4-hydroxyphenyl) propane [bisphenol A]; bis (4-hydroxyphenyl) methane [bisphenol F]; 2,2-bis (4-hydroxyphenyl) butane [bisphenol B]; 2,2-bis (4
-Hydroxyphenyl) pentane; 3,3-bis (4-
Hydroxyphenyl) pentane; 2,2-bis (4-hydroxyphenyl) hexane; bis (4-hydroxyphenyl) alkane such as 3,3-bis (4-hydroxyphenyl) hexane, bis (4-hydroxyphenyl) cycloalkane , Bis (4-hydroxyphenyl) oxide, bis (4-hydroxyphenyl) sulfide, bis (4-hydroxyphenyl) sulfone, bis (4-hydroxyphenyl) ketone, and the like. There are also hydroquinone. Of these, bisphenol A is particularly preferably used. These bisphenols may be used alone or in combination of two or more.

Examples of the tetrahalogenobisphenols represented by the general formula (VI) include tetrabromobisphenol A, tetrachlorobisphenol A,
Tetrafluorobisphenol A, tetraiodobisphenol A, tetrabromobisphenol F, tetrachlorobisphenol F, tetrachlorobisphenol B
Etc., and tetrabromobisphenol A is particularly preferably used. And as the polyhalogenophenol represented by the above general formula (VII), for example, bromophenol, chlorophenol, fluorophenol,
Dibromophenol, dichlorophenol, difluorophenol, tribromophenol, trichlorophenol, trifluorophenol, tetrabromophenol, tetrachlorophenol, tetrafluorophenol, pentabromophenol, pentachlorophenol, pentafluorophenol, and the like, in particular,
Tribromophenol is preferred. In addition, a part (50 mol% or less) of polyhalogenophenol is added to p-tert-
You may change to monohydric phenols, such as butylphenol and phenol. In addition, as a branching agent, 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] benzene; compounds having three or more functional groups such as phloroglucin, trimellitic acid, isatin bis (g-cresol) Can be used. Further, other examples of the catalyst include tributylamine, tetramethylammonium chloride, tetraethylammonium chloride, tetrabutylammonium chloride, trimethylphenylammonium chloride, triethylphenylammonium chloride, tetrabutylammonium bromide, and the like. Triethylamine is preferred.
As the alkaline aqueous solution, an aqueous solution of an alkaline compound such as sodium hydroxide, potassium hydroxide or sodium carbonate can be used.

After the completion of the reaction, the reaction mixture thus obtained is allowed to stand or separate into an aqueous phase and an organic phase containing the PC-copolymerized oligomer to separate the organic phase containing the PC-copolymerized oligomer. The phase may be taken out or the next step may be performed without phase separation. The PC copolymerized oligomer contained in the reaction mixture or the separated organic phase is then treated with a polyorganosiloxane (PDMS) corresponding to the structural unit III represented by the general formula (III).
It is possible to produce a PC-PDMS copolymer by mixing and under the condition that substantially no alkaline compound is present, and further reacting bisphenols in the presence of the alkaline compound. Here, the polyorganosiloxane (for example, PDMS) corresponding to the structural unit III is
There are various ones, but the general formula (VIII) is preferable.

[0025]

[Chemical 12]

The PDMS is represented by and is highly reactive.
Here, R ^{5 to} R ⁸ each represent hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group, and may be the same or different. Further, in one molecule, k R ^{5 s} and k R ^{6 s} may be the same or different. And R ⁹ and R
¹⁰ represents an organic residue containing an aliphatic or aromatic group, and Z represents a hydroxyl group, an amino group, a carboxyl group, an acid chloride or a phenolic hydroxyl group. k is an integer of 1 to 500, preferably 5 to 400. In the production of the PC-PDMS copolymer, the PDMS is reacted in a weight ratio of 0.01 to 14, preferably 0.02 to 12, with respect to 100 of the PC copolymer oligomer (solid amount). Let
In addition, bisphenols are 10 to 100 bisphenol units in the PC oligomer.
The reaction is carried out at a 30 molar ratio. The tetrahalogenobisphenols, polyhalogenophenols and bisphenols were added in an alkaline aqueous solution, and PDMS
Is added as it is or as a methylene chloride solution, but the order of addition is not particularly limited. However, it is desirable that the bisphenols be added last. The reaction time is 30
The reaction temperature is 20 to 40 ° C. for minutes to 2 hours.

The PC-PDMS copolymer of the present invention contains the PC copolymer oligomer having the repeating units I and II and the PDMS corresponding to the structural unit III under the condition that substantially no alkaline compound is present. Mix under
It is produced by reacting in the presence of an alkaline compound and a catalyst, and then reacting with bisphenols. That is, in order to produce the PC-PDMS copolymer of the present invention, first, a PC copolymer oligomer and PDMS are prepared.
And are mixed with an organic solvent (for example, methylene chloride) in a mixer under the condition that substantially no alkaline compound is present. Here, the mixer is not particularly limited as long as it can mix fluids, and may be a vertical type or a horizontal type, and may be a dynamic mixer or a static mixer. Also,
It may be an orifice or a centrifugal pump.
Specific examples of the dynamic mixer include, for example, multi-line mixer [manufactured by Satake Chemical Industry Co., Ltd.], Komatsu through the disintegrator [manufactured by Komatsu Zenoa Co., Ltd.], pipeline homomixer [special machinery industry ( Co., Ltd.] and the like. Specific examples of the static mixer include a Kenix type static mixer, a Sulzer type static mixer, and a Toray type static mixer.

The mixture of PC copolymerized oligomer and PDMS mixed in this mixer is then reacted with bisphenols in the presence of an alkaline compound and a catalyst in the reactor to react the PC-PDMS copolymer. The product can be obtained. Alternatively, the mixture of PC copolymerized oligomer and PDMS mixed in this mixer is then reacted in the reactor in the presence of an alkaline compound and a catalyst to form a PC-PDMS copolymerized oligomer. Furthermore, by reacting this PC-PDMS copolymer oligomer with bisphenol in the presence of an alkaline compound and a catalyst, PC-
It is also possible to obtain a reaction product of a PDMS copolymer. Here, the bisphenols include, as a part thereof, the general formula
Tetrahalogenobisphenols represented by (VI) can be used. This PC copolymer oligomer and PDMS
The reaction product of the PC-PDMS copolymer obtained by the reaction with is because the PC copolymer oligomer is in excess in a molar amount, and therefore, the PC-PDMS copolymer oligomer in which the PC copolymer oligomer is reacted with both terminals of PDMS is used. It is a mixture of PC copolymer oligomers. Here, the reactor is not particularly limited as long as it can stir the fluid, and may be a vertical type or a horizontal type. For example, there is a pipeline homomixer [made by Tokushu Kika Kogyo Co., Ltd.]. The reaction temperature in this reactor is 0 to 60 ° C, preferably 10
~ 50 ° C. The reaction residence time may be 1 second or longer.

The above-mentioned PC-PDMS copolymer or P
Examples of the alkaline compound used to obtain the C-PDMS copolymerized oligomer include NaOH and KOH. This alkaline compound has a molar ratio of 1 to 20, preferably 1.1 to PDMS end groups.
10 added. If the alkaline compound is less than 1, PC
It is not preferable because the reaction between the copolymer oligomer and PDMS does not proceed completely. In addition, the alkaline compound is 20
If it exceeds, the decomposition of the chloroformate group of the PC copolymer oligomer increases, and the molecular weight of the resulting PC-PDMS copolymer does not improve, which is not preferable.

The catalyst may be a tertiary amine or
Can use a quaternary ammonium salt. concrete
Examples of the tertiary amine include trimethylamido.
And triethylamine, tripropylamine, etc.
Be done. Further, as the quaternary ammonium salt, for example,
Trimethylbenzylammonium chloride, triethyl
And rubenzyl ammonium chloride. This
The amount of the catalyst added is equal to that of the PC copolymer oligomer chlorophore.
The molar ratio to the mate group is 1.0 × 10^-Four~ 5.0 x 1
0^-2, Preferably 5.0 × 10^-Four~ 1.0 x 10 ^-2Is.
Addition amount is 1.0 × 10^-FourWhen the value is less than 1, the reaction progresses slowly and
It was 5.0 × 10^-2If it exceeds, the effect will be
No fruit is seen and it is not necessary to add more than this.

On the other hand, polytetrafluoroethylene (fibril forming PTF) having the fibril forming ability of the component (B) which constitutes the polycarbonate resin composition of the present invention.
E) is not particularly limited. For example, those classified into type 3 according to the ASTM standard can be used. Specific examples of the type 3 include Teflon 6J manufactured by Mitsui DuPont Fluorochemicals Co., Ltd., Polyflon F-103 manufactured by Daikin Chemical Industry Co., Ltd., and the like. Also, except for type 3,
Examples include Algoflon F5 manufactured by Montefluos. The fibril-forming PTFE as described above is obtained by, for example, adding tetrafluoroethylene in an aqueous medium, for example,
In the presence of sodium, potassium or ammonium peroxydisulfide, at a pressure of 1-100 psi,
It can be obtained by polymerizing at a temperature of 0 to 200 ° C, preferably 20 to 100 ° C.

The polycarbonate resin composition of the present invention is
It comprises the above-mentioned component (A) and component (B),
The mixing ratio of each of these components is PC-P which is the component (A)
The component (B) is 0.01 to 2 parts by weight, preferably 0.02 to 1.5 parts by weight, based on 100 parts by weight of the DMS copolymer. here,
When the fibril-forming PTFE of the component (B) is less than 0.01 parts by weight, the flame retardancy-improving effect cannot be seen. Further, if it exceeds 2 parts by weight, it is difficult to knead with the PC-PDMS copolymer as the component (A), which is not preferable. The amount of polyorganosiloxane in the resin composition is 0.01% by weight.
That is all. If the amount of this polyorganosiloxane is less than 0.01% by weight, the flame retardancy will not be 1/32 inch V-0.

If necessary, the resin composition of the present invention may be mixed with a commercially available polycarbonate resin, other synthetic resin, or an elastomer as the component (C), as long as the object of the present invention is not impaired. You may use. Further, an inorganic filler, various additives and the like can be blended. Here, examples of the synthetic resin include polyethylene, polypropylene, polystyrene, acrylonitrile-styrene (AS) resin, acrylonitrile-butadiene-styrene (ABS) resin, polymethylmethacrylate, polyester, and polyamide. Examples of the elastomer include isobutylene-isopropylene rubber, styrene-butadiene rubber, ethylene-propylene rubber, acrylic elastomer and the like.

Various inorganic fillers can be used. Specifically, glass, carbon fiber, and other inorganic fillers are used. First, as the glass material, for example, glass fiber, glass beads, glass flakes, glass powder or the like can be used. Here, the glass fiber used may be any of alkali-containing glass, low-alkali glass and non-alkali glass. Its fiber length is 0.1 to 8 mm, preferably 0.1.
3 to 6 mm, and the fiber diameter is 0.1 to 30 μm,
It is preferably 0.5 to 25 μm. And the form of this glass fiber is not particularly limited, for example, roving,
There are various types such as milled fiber and chopped strand. These glass fibers may be used alone or in combination of two or more. These glass materials are surface-treated with a silane coupling agent such as aminosilane, epoxysilane, vinylsilane or methacrylsilane, a chromium complex compound or a boron compound in order to enhance the affinity with the resin. It may be one. As such a glass material, for example, commercially available MA-4 manufactured by Asahi Fiber Glass Co., Ltd.
09C (average fiber diameter 13 μm) or TA-409C
(Average fiber diameter 23 μm) and the like can be preferably used.

Next, the carbon fibers used are generally those produced by firing using cellulose fibers, acrylic fibers, lignin, petroleum or coal-based pitch as a raw material, which are flame resistant, carbonaceous or There are various types such as graphite. The fiber length of the carbon fiber is usually 0.01 to 10 mm, preferably 0.02 to 8 m.
The fiber diameter is in the range of m, and the fiber diameter is 1 to 15 μm, preferably 5 to 13 μm. The form of the carbon fiber is not particularly limited, and examples thereof include various types such as roving, milled fiber, chopped strand, and strand. These glass fibers may be used alone or in combination of two or more. The surface of these carbon fibers, in order to increase the affinity with the resin,
It may be one that has been surface-treated with an epoxy resin or a urethane resin. As such a carbon fiber, for example, a commercially available product such as Vesphite (average fiber diameter 7 μm) manufactured by Toho Rayon Co., Ltd. can be preferably used.

Other inorganic fillers include, for example, aluminum fibers, calcium carbonate, magnesium carbonate,
Dolomite, silica, diatomaceous earth, alumina, iron oxide, zinc oxide, magnesium oxide, calcium sulfate, magnesium sulfate, calcium sulfite, talc, clay, mica,
Asbestos, calcium silicate, montmorillonite, bentonite, carbon black, graphite, iron powder, lead powder, aluminum powder and the like can also be used.

Further, various additives include antioxidants such as hindered phenol type, phosphite type and phosphoric acid ester type, ultraviolet absorbers such as benzotriazole type and benzophenone type, and hindered amine type light Examples thereof include stabilizers, internal lubricants such as aliphatic carboxylic acid esters, paraffin, silicone oil and polyethylene wax, flame retardants, flame retardant aids, antistatic agents and colorants.

The resin composition of the present invention comprises the above-mentioned component (A).
And the component (B) and, if necessary, the component (C),
It can be obtained by kneading. Then, for the compounding and kneading, a method usually used, for example, a ribbon blender, a Henschel mixer, a Banbury mixer, a drum tumbler, a single screw extruder, a twin screw extruder, a co-kneader, a multi-screw extruder, etc. Can be done using. The heating temperature for kneading is usually selected in the range of 250 to 300 ° C. The polycarbonate resin composition thus obtained can be applied to various known molding methods such as injection molding, blow molding, extrusion molding, compression molding, calender molding, rotational molding, etc. to produce various molded articles. Can be used for

The resin composition of the present invention comprises a tetrahalogenobi
Sphenol or polyhalogenophenol
And flame retardant PC-PDMS copolymer and fib
Sufficient flame retardance as it contains rill-forming PTFE
It is possible to obtain a molded product having In addition, flame retardant
Adding more flame retardancy by blending
You can Difficulty used to impart even more flame retardancy
As a combustor, use a suitable organic acid or inorganic acid of alkali gold.
Group salts or alkaline earth metal salts, and halogen-containing compounds
Things can be mentioned. Where preferred inorganic alkali metal salts
As, sodium salt, potassium salt, lithium salt, etc.
Is mentioned. Also, as the inorganic alkaline earth metal salt
Examples include calcium salts and magnesium salts. Well
Inorganic alkali metal salt or inorganic alkaline earth metal salt
The inorganic acid used to obtain H is H₃AlF₆，
H₃BF₆, H₃SbF₆, H₂TiF₆, H₂SiF
₆, H₃PO_Four, H₂ZrF ₆, H₂WF₆, HBF_Four
Etc. Preferred inorganic alkali metal salt or none
As an alkaline earth metal salt, Na₃AlF₆, Ca₃
(AlF₆)₂Is mentioned. Also, organic alkali metal salts
Alternatively, it is preferably used in obtaining an organic alkaline earth metal salt.
Preferred organic acids include aliphatic sulfonic acids and aromatic sulfonic acids.
Phosphonic acid, aromatic carboxylic acid and aliphatic carboxylic acid
It As a specific example, trifluoromethane-sulfone
Acid; Perfluorobutanesulfonic acid; Perfluorooctane
Tansulfonic acid; Dodecanesulfonic acid; Benzenesulfo
Acid; 2,4,6-trichlorobenzenesulfonic acid;
Nazendisulfonic acid; naphthol sulfonic acid; capryl
Acid; lauric acid; benzoic acid; naphtholcarboxylic acid;
2,4,6-tribromobenzoic acid and the like can be mentioned. Preferred
New organic alkali metal salt or organic alkaline earth metal salt
As for potassium perfluorobutane sulfonate,
Examples include calcium fluorobutane sulfonate.
Also, various kinds of halogen-containing compounds are used.
You can Tetra is a typical example.
Low molecular weight polycarbonate containing halogenobisphenols
Contains bonates and tetrahalogenobisphenols
Epoxy resin and other halogen-based flame retardants
You can get it. Of which, above all, belong to
Flame retardants are preferred.

Here, the low molecular weight polycarbonate containing the above tetrahalogenobisphenols has the general formula

[0041]

[Chemical 13]

[In the formula, X ^{6 to} X ⁹ represent a halogen atom, R ¹¹ represents an alkylene group having 2 to 8 carbon atoms, and 1 to 9 carbon atoms.
Represents an alkylidene group, a carbonyl group, a sulfone group, a sulfur atom or an oxygen atom. ] The repeating unit (X) represented by

[0043]

[Chemical 14]

[In the formula, R ¹¹ is the same as defined above. ] The repeating unit (Y) represented by q pieces [however, p shows the integer of 1-30, q shows the integer of 0-30, p + q = 1-50]
It is an integer of (particularly 3 to 20). ], And is represented by a low molecular weight polycarbonate (polycarbonate oligomer) having a halogen content of 30% by weight or more. Here, as the halogen-containing bisphenol compound constituting the repeating unit (X), 2,2-bis (3,3
5-dibromo-4-hydroxyphenyl) propane;
2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane; bis (3,5-dibromo-4-hydroxyphenyl) methane; bis (3,5-dibromo-4-)
Hydroxyphenyl) ether; bis (3,5-dibromo-4-hydroxyphenyl) sulfone and the like are used,
Especially, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane [commonly known as tetrabromobisphenol A] is effective. Further, as the bisphenol compound constituting the repeating unit (Y), 2,2-bis (4-
Hydroxyphenyl) propane; bis (4-hydroxyphenyl) methane; bis (4-hydroxyphenyl) sulfone; bis (4-hydroxyphenyl) ether and the like are used, and particularly 2,2-bis (4-hydroxyphenyl) propane. [Common name bisphenol A] is effective.

Next, the epoxy resin containing tetrahalogenobisphenols is represented by the general formula

[0046]

[Chemical 15]

[Wherein R ¹¹ is the same as defined above, R ¹² represents a hydrogen atom, a methyl group, an epoxypropyl group, a phenyl group, a 2-hydroxypropyl group or an oxygen atom, and X ^{10 to} X ¹³ are halogens. Represents an atom, and r represents an integer of 1 to 30. ] And a halogen content of 30% by weight or more.

Other halogen-based flame retardants include, for example, tetrabromobenzene; tetrachlorobenzene; hexabromobenzene; hexachlorobenzene; hexabromobiphenyl; octabromobiphenyl; 2,2'-dichlorobiphenyl; 2,4 '. 2,4'-dichlorobiphenyl;hexabromobiphenyl; triphenyl chloride; tetrachlorophthalic acid; tetrachlorophthalic anhydride; tetrabromophthalic acid; tetrabromophthalic anhydride; tribromophenol and other known compounds There are halogenated aromatic compounds and also 2,2-bis (3,5-dichlorophenyl) propane; bis (2-chlorophenyl) methane; bis (2,6-dibromophenyl) methane;
-Bis (2,6-dichlorophenyl) ethane; 1,1-
Bis (2-chloro-4-methylphenyl) ethane; 1,
1-bis (3,5-dichlorophenyl) ethane; 2,2
-Bis (3-phenyl-4-bromophenyl) ethane;
2,3-bis (4,6-dichloronaphthyl) propane;
2,2-bis (2,6-dichlorophenyl) pentane;
2,2-bis (2,6-dichlorophenyl) hexane;
Bis (4-chlorophenyl) methane; Bis (3,5-dichlorophenyl) cyclohexylmethane; Bis (3-nitro-4-bromophenyl) ethane; Bis (4-hydroxy-2,6-dichloro-3-methoxyphenyl) methane 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane; 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane; 2,2-bis (3-bromo-4) -Hydroxyphenyl) propane;
There are diaromatics such as 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane diglycidyl ether. Further, halogenated diphenyl ethers, particularly those containing 2 to 10 halogen atoms are preferable, and examples thereof include decabromodiphenyl ether, octabromodiphenyl ether, hexabromodiphenyl ether, pentabromodiphenyl ether, tetrabromodiphenyl ether, tribromodiphenyl ether, dibromodiphenyl ether, hexachloro. Examples include diphenyl ether, pentachlorodiphenyl ether, tetrachlorodiphenyl ether, trichlorodiphenyl ether and dichlorodiphenyl ether.

[0049]

The present invention will be further described in detail with reference to production examples, examples and comparative examples. Production Example 1-1 [Production of PC oligomer A] 5% by weight of 400 liters
60 kg of bisphenol A in sodium hydroxide solution
Was dissolved and a sodium hydroxide aqueous solution of bisphenol A was prepared. Then, the aqueous sodium hydroxide solution of bisphenol A kept at room temperature was passed through the orifice plate at a flow rate of 138 liters / hour and methylene chloride at a flow rate of 69 liters / hour through a tubular reactor having an inner diameter of 10 mm and a tube length of 10 m. Introduce phosgene into this and co-flow 1
It was blown in at a flow rate of 0.7 kg / hour and continuously reacted for 3 hours. The tubular reactor used here was a double tube, and cooling water was passed through the jacket to keep the discharge temperature of the reaction solution at 25 ° C. The pH of the discharged liquid is 10 to 11
Was adjusted as shown. The reaction liquid thus obtained was allowed to stand still to separate and remove the aqueous phase, and a methylene chloride phase (220 liters) was collected. To this, 170 liters of methylene chloride was further added and sufficiently stirred. This was designated as PC oligomer A (concentration: 317 g / liter). The degree of polymerization of the PC oligomer A obtained here is 2 to 4
And the concentration of the chloroformate group was 0.7N.

Production Example 1-2 [Production of PC Oligomer B] Bisphenol A 2,275
g (9.96 mol) of 2.0 N sodium hydroxide aqueous solution 14
Dissolve in liter, put in a vessel with an internal volume of 50 liter with a stirrer, add 8.25 liter of methylene chloride and stir (50 rpm), and while cooling, blow phosgene at a flow rate of 0.2 mol / min for 70 minutes to carry out the reaction. went. After stopping the blowing of phosgene, stirring was continued for another 30 minutes.
After that, 250 g of tetrabromobisphenol A (0.4
6 mol) and 150 g (0.453 mol) of tribromophenol, sodium hydroxide (NaOH: 78.6 g, water: 1.
(35 liters) was added while continuing stirring, 1.8 cc of triethylamine was added, and 450 rpm
And reacted for 60 minutes. After the reaction, let it stand for about 30 minutes,
The aqueous phase was separated to obtain an organic phase. This is PC oligomer B
(Concentration: 500 g / liter, chloroformate group concentration: 0.5 mol / liter).

Production Example 2-1 [Synthesis of Reactive PDMS-A] 1,483 g of octamethylcyclotetrasiloxane, 96 g of 1,1,3,3-tetramethyldisiloxane and 35 g of 86% sulfuric acid were mixed. The mixture was stirred at room temperature for 17 hours. After that, the oil phase is separated and
5 g of sodium hydrogen carbonate was added and stirred for 1 hour. After filtration, vacuum distillation was performed at 150 ° C. and 3 torr to remove low-boiling substances to obtain oil. 60 g of 2-allylphenol and 0.0
To a mixture of 014 g of platinum chloride-platinum as an alcoholate complex, 294 g of the oil obtained above was added.
Added at a temperature of ° C. The mixture was stirred for 3 hours while maintaining the temperature of 90 to 115 ° C. The product was extracted with methylene chloride and washed 3 times with 80% aqueous methanol to remove excess 2-allylphenol. The product was dried over anhydrous sodium sulphate and evaporated in vacuo to a temperature of 115 ° C. The obtained terminal phenol PDMS is N
The number of repeating dimethylsilanooxy units was 30 as measured by MR.

Production Example 2-2 [Synthesis of Reactive PDMS-B] In Production Example 2-1
The procedure of Production Example 2-1 was repeated, except that the amount of 1,1,3,3-tetramethyldisiloxane was changed to 18.1 g. In the obtained terminal phenol PDMS, the number of repeating dimethylsilanooxy units was 150 as measured by NMR.

Production Example 2-3 [Synthesis of Reactive PDMS-C] In Production Example 2-1
Example 1 was repeated except that the amount of 1,1,3,3-tetramethyldisiloxane was changed to 7.72 g. In the obtained terminal phenol PDMS, the number of repeating dimethylsilanooxy units was 350 as determined by NMR.

Production Example 3-1 [Production of PC-PDMS Copolymer A ₁ ] In a vessel equipped with a stirrer having an internal volume of 50 liters, 10 liters of PC oligomer A (bisphenol A unit: 11.6 mol) was reacted with PDM.
S-A 40g mixed and dissolved, tetrabromobisphenol A 330g (0.61mol) and tribromophenol 169g (0.51mol) sodium hydroxide aqueous solution (NaOH: 110g, water: 1.35 liters) )
What was dissolved in was mixed and triethylamine 2.9cc
Was added, and the mixture was stirred and reacted at 300 rpm for 60 minutes. After completion of the reaction, 500 g of bisphenol A was added to the above reaction system, and an aqueous sodium hydroxide solution (NaOH: 290 g, water: 3.4) was added.
2 liters) dissolved in it and mixed with methylene chloride
6.1 liter was added, and the mixture was stirred and reacted at 450 rpm for 60 minutes. After the reaction, the organic phase and the aqueous phase are separated, and the organic phase is treated with alkali (0.01N-NaOH) and acid (0.1N-HC).
l) and water were sequentially washed and separated. A flake-shaped polymer was obtained by removing methylene chloride.

Production Example 3-2 [Production of PC-PDMS Copolymer A ₂ ] In the same manner as in Production Example 3-1, except that 160 g of reactive PDMS was used in Production Example 3-1, a flaky shape was obtained. A polymer of

Production Example 3-3 [Production of PC-PDMS Copolymer A ₃ ] The PC oligomer B obtained in Production Example 1-2 and the production example 2-1 were produced by the flow shown in FIG. 1. Reactive PDMS-A was reacted. PC oligomer B, reactive PDMS-A
5% by weight methylene chloride solution, 1% by weight triethylamine (TEA) aqueous solution and 25% by weight sodium hydroxide (NaOH) aqueous solution were used, respectively. Each flow rate is PC oligomer B: 13 liters / hour, reactive P
DMS-A: 4 liters / hour, TEA: 0.3 liters / hour, and NaOH: 0.23 liters / hour. Pipeline homomixer [made by Tokushu Kika Kogyo Co., Ltd., 2SL type: inner volume 0.3 liter, diameter of first turbine blade 42.5 mm, diameter of second turbine blade 48]
mm], the mixer is 500 rpm, and the reactor is 3,000
It was rotated at 0 rpm. The main pipe (PC oligomer line) used had an inner diameter of 16 mm. TE
A was charged 60 cm from the mixer, and NaOH was charged 80 cm from the mixer. Reactor temperature is 25 ~
It was 30 ° C. The obtained reaction product (containing a PC-PDMS copolymer oligomer) was left standing and separated to obtain an organic phase 330c.
c was transferred to a 1-liter batch type reactor, 120 cc of methylene chloride and 2.2 g of p-tert-butylphenol were added, and the mixture was stirred to make it uniform. An alkaline aqueous solution of bisphenol A (bisphenol A: 19 g, sodium hydroxide: 11 g, water: 130 cc) was added to this, and 500 rpm
And reacted for 1 hour. After the reaction, the mixture was transferred to a 7-liter washing tank, 400 cc of methylene chloride and 400 cc of water were added, and the organic phase and the aqueous phase were separated. After separation, the organic phase is alkali (0.
01N-NaOH) washing, acid (0.1N-HCl) washing,
Wash with water, then remove methylene chloride and remove PC-PDM
Flake of S copolymer was obtained.

Production Example 3-4 [Production of PC-PDMS Copolymer A ₄ ] In the same manner as in Production Example 3-1, except that 40 g of reactive PDMS-A was changed to 20 g in Production Example 3-1. A flake-like polymer was obtained.

Production Example 3-5 [Production of PC-PDMS Copolymer A ₅ ] Production Example 3-1, except that 40 g of reactive PDMS-A was changed to 8 g and tetrabromobisphenol A 330 g was changed to 195 g. A flake polymer was obtained in the same manner as in Example 3-1.

Production Example 3-6 [Production of PC-PDMS Copolymer A ₆ ] Production Example 3-1 except that reactive PDMS-A was changed to reactive PDMS-B in Production Example 3-1. Similarly, a flake polymer was obtained.

Production Example 3-7 [Production of PC-PDMS Copolymer A ₇ ] Production Example 3-1 except that reactive PDMS-A was changed to reactive PDMS-C in Production Example 3-1. Similarly, a flake polymer was obtained.

Production Example 4-1 [Production of Polycarbonate C ₁ ] Production Example 3-1 except that reactive PDMS was not used in Production Example 3-1.
A flake-shaped polymer was obtained in the same manner as in.

Production Example 4-2 [Production of Polycarbonate C ₂ ] In Production Example 4-1, p-tert was used instead of 169 g of tribromophenol.
-Butylphenol (PTBP) except that 77 g was used,
A flake polymer was obtained in the same manner as in Production Example 3-1.

PC-PDM obtained in Production Examples 3-1 to 7
The S copolymers A _{1 to} A ₇ and the polycarbonates C _{1 to} C ₂ obtained in Production Examples 4-1 and ₂ are each 1
After drying overnight at 20 ° C., it was pelletized at 280 ° C. by an extruder. Then, for each of the physical property evaluations, P
The DMS content, Br content and viscosity average molecular weight were measured.
The results are shown in Table 1. When preparing the pellets, 800 ppm of trisnonylphenylphosphite was added as an antioxidant to the PC-PDMS copolymers A ₁ and A ₂ and the polycarbonate C ₁ . Also, PC-P
For DMS copolymer A ₃ , 1,000 pp of potassium perfluorobutyl sulfonate [manufactured by Dainippon Ink and Chemicals Co., Ltd., Megafac F114: C ₄ F ₉ SO ₃ K] was used as a flame retardant.
m was added. Then, PC-PDMS copolymer A ₄ was prepared by adding 5,0 stearic acid monoglyceride as a lubricant.
00 ppm was added.

[0064]

[Table 1]

The PDMS content, Br content and viscosity average molecular weight were measured as follows. 1: of aromatic H of bisphenol A residue found at 7.1 to 7.3 ppm by PDMS ¹ HNMR, aromatic H of TBA residue found at 7.43 ppm and methyl H of PTBP found at 0.11 ppm It was calculated from the strength ratio. 2: Br content (total Br content in the copolymer) The sample was alkali decomposed and analyzed by the Horhard method. 3: Viscosity average molecular weight (Mv) The viscosity of the methylene chloride solution at 20 ° C was measured using an Ubbelohde type viscosity tube, and the intrinsic viscosity [η] was calculated from this, and then calculated by the following formula. [Η] = 1.23 × 10 ⁻⁵ × Mv ^0.83

Examples 1 to 10 and Comparative Examples 1 to 5 PC-PDMS copolymer A obtained in Production Examples 3-1 to 7
_{1 to} A ₇ and polycarbonates C _{1 to} C ₂ obtained in Production Examples 4-1 and ₂ were dried at 120 ° C. for 24 hours, and then commercially available polycarbonate C ₃ and fibril-forming PTFE.
Was premixed with a dry tumbler at a mixing ratio shown in Table 2, then fed to an extruder, kneaded at a temperature of 270 ° C., and pelletized. The obtained pellets are each 120
After dried at 12 ° C. for 12 hours, injection molding was performed to obtain a test piece.
A flame retardancy test was performed on the obtained test piece as a quality evaluation. In the flame retardancy test, a 1/64 inch test piece was prepared by cutting a 1/32 inch test piece.
The results of the flame retardancy test are shown in Table 3. The fibril forming PTFE is as follows. B ₁ : Algoflon F5 [manufactured by Montefluos Company] B ₂ : Teflon 6J [manufactured by Mitsui DuPont Fluorochemicals Co., Ltd.] Further, commercially available polycarbonates are as follows. C _3: Tarflon A2200 [Idemitsu Petrochemical Co., Ltd., M
v: 21,500]

[0067]

[Table 2]

[0068]

[Table 3]

Each measurement was performed as follows. 1: Flame Retardancy Test Flame Retardancy Test UL-94 1/32 inch, 1/64 inch (thickness) A vertical flammability test was performed according to Underwriters Laboratory Subject 94. 2: Izod impact strength (with notch) Using a test piece with a thickness of 1/8 inch, JIS-K-711
It measured based on 0.

[0070]

As described above, the polycarbonate resin composition of the present invention is excellent in flame retardancy, mechanical strength and releasability. Therefore, the polycarbonate resin composition of the present invention is effectively used as a raw material for various molded articles (for example, various parts such as automobiles, home electric appliances, and office automation equipment).

[Brief description of drawings]

FIG. 1 is a diagram showing a production flow of a polycarbonate-polyorganosiloxane copolymer in Production Example 3-3.

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area C08L 27:18)

Claims (1)

[Claims] 1. The main chain (A) is (a) a compound represented by the general formula (I):[In the formula, R¹And R²Are hydrogen atom or carbon respectively
Represents an alkyl group of the numbers 1 to 4, even if they are the same
It may be different. ] The repeating unit represented by
I, (b) General formula (II)[In the formula, R³And R^FourAre hydrogen atom or carbon respectively
Represents an alkyl group of the numbers 1 to 4, even if they are the same
It may be different. Also, X¹~ X^FourIs that
Is a halogen atom. ] The repeating unit II and
(C) General formula (III):[In the formula, R^Five~ R⁸Are hydrogen atom and carbon number 1 to
6 alkyl groups or phenyl groups, which are the same for each
Or may be different. Also, R ⁹as well as
R^TenIs an organic residue containing aliphatic or aromatic, respectively.
A represents -O-, -NH- or a single bond. k is
It is an integer of 1 to 500. ] The structural unit III represented by
In addition to having the general formula (IV)[In the formula, X^FiveRepresents a halogen atom, m is an integer of 1 to 5
Is. When m is plural, plural X^FiveAre each
It may be the same or different. ]]
Polyhalogenophenoxy group consisting of terminal group IV
Carbonate-polyorganosiloxane copolymer 100 weight
Polytetraf having part and (B) fibril forming ability
It is characterized by comprising 0.01 to 2 parts by weight of luoroethylene.
A polycarbonate resin composition.