JP2011241298A - Flame retardancy resin composition and molded body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flame retardancy resin composition having excellent flame retardancy and impact resistance and available for components of image output equipment, such as copier and printer, and electric and electronic equipment such as home electric appliances; and to provide a molded body.SOLUTION: The flame retardancy resin composition comprises at least: a resin having a carbonate bond; lignin sulfonate; and polyfluoroolefin. Alternatively, the flame retardancy resin composition comprises at least: a polymer alloy having the carbonate bond; the lignin sulfonate; the polyfluoroolefin; and a flame retardant.

Description

  The present invention has excellent flame retardancy and impact resistance, and is a flame retardant resin composition that can be used for parts such as image output devices such as copying machines and printers, and electrical and electronic devices such as home appliances, and the like. It relates to a molded body.

  Many resin parts are used in image output devices such as copiers and printers, electrical and electronic devices such as home appliances, and interior parts of automobiles. These resin parts are required to have flame retardancy in the resin material for the purpose of preventing the spread of fire. In particular, in a copying machine, there is a fixing unit that becomes hot inside, and a resin material is also used in the vicinity of the fixing unit. Moreover, there is a 100 V AC power supply unit as a unit that generates a high voltage, such as a charging unit, or a power supply unit. These maximum power consumptions are several hundred W to 1,500 W, and are composed of units using a 100 V, 15 A power supply system.

  Such copiers, mainly multi-function printers represented by multi-function printers, are stationary electrical and electronic equipment, and are international standards for flame retardancy of resin materials (IEC 60950), which is one of the safety standards for product equipment. In Japan, it is required to cover an ignition source or a portion that is likely to ignite with a flame retardant “5V” enclosure component of UL94 standard (Underwriters Laboratories Inc., standard). The test method for UL94 standard “5V” is defined as “a combustion test with a 500 W test flame” in the international standard IEC60695-11-20 (ASTM D5048).

  In addition to the above-mentioned enclosure parts, the resin parts constituting the copying machine main body are required to have UL94 standard "V-2" or higher for the internal parts in the enclosure. The test method related to “V-2” or higher of UL94 standard is defined as “20 mm vertical combustion test” in the international standard IEC60695-11-10 B method (ASTM D3801).

Here, there are several types of flame retardants added to the resin material, and bromine flame retardants, phosphorus flame retardants, nitrogen compound flame retardants, silicone flame retardants, or inorganic flame retardants are common. is there. The flame retardant mechanism of these flame retardants is already known in several documents, and here, three types of flame retardant mechanisms that are frequently used will be described below.
The first is a halogen compound typified by a brominated flame retardant. Combustion speed is reduced by using halogenated compounds as an oxidation reaction negative catalyst for the burned flame.
The second is a phosphorus flame retardant or a silicone flame retardant. By burning a silicone flame retardant on the surface of the resin during combustion, or by causing a dehydration reaction of the phosphorus flame retardant in the resin, a carbide (char) is generated on the surface to form a heat insulating film, etc. Stop burning.
The third is an inorganic flame retardant such as magnesium hydroxide or aluminum hydroxide. Combustion is stopped by cooling the entire resin due to the endothermic reaction when these compounds are decomposed by the combustion of the resin or the latent heat of vaporization of the generated water.

  However, in order for the various flame retardants described above to exhibit effective effects, they must be added in large amounts to the resin. When it shows with a specific numerical value, about 10-30 mass parts is required with respect to 100 mass parts of resin used as a base, and about 50 mass parts may be required in many things. Thus, when the addition amount of a flame retardant is increased in order to obtain an effective flame retardant effect, there is a problem that the mechanical strength of the molded body is lowered.

  A typical example of a resin having a carbonate bond is a polycarbonate resin. In general, phosphoric flame retardants are used to make polycarbonate resins flame retardant. However, phosphoric acid is generated by hydrolysis of phosphoric flame retardants over a long period of time, and this phosphoric acid hydrolyzes polycarbonate resins. It is known to progress. As a result, there arises a problem that the mechanical strength (impact strength and tensile elongation) and flame retardancy of the polycarbonate resin are lowered.

  In addition, conventional flame retardants are often harmful as such. For example, brominated flame retardants generate dioxins by thermal decomposition during incineration. In addition, phosphorus-based flame retardants may cause chemical sensitivity (allergy). For this reason, development of a flame retardant which is safer and capable of exhibiting a sufficient flame retardant effect even when added in a small amount is eagerly desired.

  For example, Patent Document 1 proposes a flame retardant comprising at least one of a polyhydric phenol compound, a saccharide compound, an alkylbenzene sulfonic acid compound and a metal salt thereof, and an olefin sulfonic acid compound and a metal salt thereof. Has been. According to this proposal, a high flame retardant effect is obtained with a small amount of addition to thermoplastic polyester resins such as polylactic acid and polyethylene terephthalate (PET). In addition, flame retardance is performed by the method based on UL94 combustion test method. However, as described in Patent Document 1, when a sulfonic acid compound of alkylbenzene is added to a thermoplastic polyester resin such as polylactic acid or polyethylene terephthalate (PET), the thermoplastic polyester resin is decomposed at the melting temperature of the resin at the time of molding. It progresses and there exists a problem that the mechanical strength of a molded object will fall.

  Accordingly, the present situation is that it is desired to provide a flame-retardant resin composition and a molded article that have an excellent flame-retardant effect and do not cause a decrease in mechanical strength.

  This invention is made | formed in view of this present condition, and makes it a subject to solve the said various problems in the past and to achieve the following objectives. That is, an object of the present invention is to provide a flame retardant resin composition and a molded article that have an excellent flame retardant effect and do not cause a decrease in mechanical strength.

Means for solving the problems are as follows. That is,
<1> A flame retardant resin composition comprising at least a resin having a carbonate bond, a lignin sulfonate, and a polyfluoroolefin.
In the flame retardant resin composition according to <1>, sufficient flame retardancy can be obtained by adding a small amount of lignin sulfonate, and the thermal history during processing and long-term use can suppress degradation of the resin. The strength is not reduced.
Further, high dispersibility in the resin can be obtained due to the hydrophilicity and negative charging action of lignin sulfonate. Furthermore, since lignin sulfonate is a polymer substance, it has caking properties and the dispersion state in the resin is stable, so that bleeding out during use can be suppressed.
<2> The flame-retardant resin composition according to <1>, wherein the resin having a carbonate bond is at least one of an aromatic polycarbonate resin and an aliphatic polycarbonate resin.
<3> A flame retardant resin composition comprising at least a polymer alloy having a carbonate bond, a lignin sulfonate, a polyfluoroolefin, and a flame retardant.
In the flame-retardant resin composition according to <3>, sufficient flame retardancy can be obtained by adding a small amount of lignin sulfonate and a flame retardant, and the thermal history during processing and the degradation of the resin can be suppressed during long-term use. Therefore, the mechanical strength is not lowered.
Further, high dispersibility in the resin can be obtained due to the hydrophilicity and negative charging action of lignin sulfonate. Furthermore, since lignin sulfonate is a polymer substance, it has caking properties and the dispersion state in the resin is stable, so that bleeding out during use can be suppressed.
<4> The polymer alloy having a carbonate bond is at least one selected from polycarbonate resin, acrylonitrile-butadiene-styrene copolymer, rubber-modified polystyrene resin, acrylonitrile-styrene copolymer, and methyl (meth) acrylate-modified rubber. The flame-retardant resin composition according to <3>, which is a polymer alloy with a seed.
<5> The lignin sulfonate is any of sodium lignin sulfonate, calcium lignin sulfonate, and magnesium lignin sulfonate, and the lignin with respect to 100 parts by mass of a resin having a carbonate bond or a polymer alloy having a carbonate bond. The flame-retardant resin composition according to any one of <1> to <4>, wherein the sulfonate is contained in an amount of 0.1 part by mass to 1 part by mass.
<6> The polyfluoroolefin is coated with a resin containing (meth) acrylate, and 0.1 parts by mass to 2 parts by mass of the polyfluoroolefin with respect to 100 parts by mass of a resin having a carbonate bond or a polymer alloy having a carbonate bond. The flame-retardant resin composition according to any one of <1> to <5>, which is contained in parts by mass.
<7> The flame retardant according to any one of <3> to <6>, wherein the flame retardant is at least one selected from a phosphorus flame retardant, a nitrogen compound flame retardant, a bromine flame retardant, and an inorganic flame retardant. It is a flame retardant resin composition.
<8> A molded product obtained by molding the flame retardant resin composition according to any one of <1> to <7>.
In the molded article according to <8>, a molded article having high mechanical strength and flame retardancy can be obtained, and can be used as a molded article for electric / electronic devices.

  ADVANTAGE OF THE INVENTION According to this invention, the various problems in the past can be solved, and the flame-retardant resin composition and molded object which have the outstanding flame-retardant effect and do not cause the mechanical strength fall can be provided. .

(Flame retardant resin composition)
In the first embodiment, the flame retardant resin composition of the present invention contains at least a resin having a carbonate bond, a lignin sulfonate, and a polyfluoroolefin, and further contains other components as necessary. .
In the second embodiment, the flame retardant resin composition of the present invention contains at least a polymer alloy having a carbonate bond, a lignin sulfonate, a polyfluoroolefin, and a flame retardant, and further contains other components as necessary. It contains.

<Resin having carbonate bond>
The flame retardant resin composition of the first embodiment of the present invention contains a resin having a carbonate bond.
The resin having a carbonate bond is not particularly limited as long as it has a carbonate bond, and can be appropriately selected depending on the purpose, and is at least one of an aromatic polycarbonate resin and an aliphatic polycarbonate resin. It is preferable.

As said aromatic polycarbonate resin, the resin obtained by reaction of bisphenol and carbonate ester can be used.
As said aromatic polycarbonate resin, what was synthesize | combined suitably may be used and a commercial item can also be used. Examples of the commercially available products include Panlite (trade name) manufactured by Teijin Chemicals Ltd. and Iupilon (trade name) manufactured by Mitsubishi Chemical Engineer Plastics Co., Ltd.

Examples of the aliphatic polycarbonate resin that can be used include polypropylene carbonate, polyethylene carbonate, and alicyclic polycarbonate having a cyclic structure.
As said aliphatic polycarbonate resin, what was synthesize | combined suitably may be used and a commercial item can also be used.

  The number average molecular weight of the resin having a carbonate bond is preferably 50,000 to 5,000,000 in terms of standard polystyrene conversion by gel permeation chromatography (GPC) analysis, and preferably 100,000 to 2,000,000. More preferred.

<Polymer alloy having carbonate bond>
The flame retardant resin composition of the second aspect of the present invention contains a polymer alloy having a carbonate bond.
The polymer alloy having a carbonate bond is not particularly limited and may be appropriately selected depending on the intended purpose. For example, polycarbonate resin, acrylonitrile-butadiene-styrene copolymer, rubber-modified polystyrene resin, acrylonitrile-styrene copolymer It is preferably a polymer alloy with at least one selected from a polymer and a methyl (meth) acrylate-modified rubber.
The polymer alloy of the polycarbonate resin and the acrylonitrile-butadiene-styrene copolymer may be appropriately synthesized or a commercially available product may be used. Examples of the commercially available product include Multilon T-3714 (manufactured by Teijin Chemicals Ltd.).
There is no restriction | limiting in particular as said polycarbonate resin in the polymer alloy which has the said carbonate bond, Although it can select suitably according to the objective, For example, the aromatic polycarbonate resin similar to the resin which has the said carbonate bond, and an aliphatic polycarbonate It is preferably at least one of resins.
In the polymer alloy having a carbonate bond, at least one selected from acrylonitrile-butadiene-styrene copolymer other than the polycarbonate resin, rubber-modified polystyrene resin, acrylonitrile-styrene copolymer, and methyl (meth) acrylate-modified rubber. The resin content is preferably 50% by mass or less, and more preferably 30% by mass or less. If the content of the resin other than the polycarbonate resin exceeds 50% by mass, flame retardancy may not be obtained.

<Lignin sulfonate>
The lignin sulfonate is a polymer electrolyte having a functional group such as a sulfone group, a carboxyl group, and a phenolic hydroxyl group, and high dispersibility in the resin is obtained due to strong hydrophilicity and negative charging action. Moreover, since the said lignin sulfonate is a high molecular substance, it has caking property and has a function which can prevent the bleed out at the time of use.

Examples of the ligni sulfonate include sodium lignin sulfonate, calcium lignin sulfonate, and magnesium lignin sulfonate.
As said lignin sulfonate, what was synthesize | combined suitably may be used and a commercial item can also be used. Examples of the commercially available products include Sun Extract P321 (magnesium lignin sulfonate, manufactured by Nippon Paper Chemical Co., Ltd.), Sun Extract P201 (Calcium lignin sulfonate, manufactured by Nippon Paper Chemicals Co., Ltd.), Sun Extract P252 (sodium lignin sulfonate, Nippon Paper Chemicals Co., Ltd.).

  The content of the lignin sulfonate is preferably 0.1 parts by mass to 1 part by mass with respect to 100 parts by mass of the resin having a carbonate bond or the polymer alloy having the carbonate bond. When the content is less than 0.1 parts by mass, sufficient flame retardancy may not be obtained. When the content exceeds 1 part by mass, decomposition of the resin is likely to occur due to heating during molding. is there.

-Polyfluoroolefin-
The polyfluoroolefin has a function of preventing drip during combustion.
The polyfluoroolefin is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include difluoroethylene polymer, tetrafluoroethylene polymer, tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene. And a copolymer of ethylene monomer and the like. These may be used individually by 1 type and may use 2 or more types together. Among these, a tetrafluoroethylene polymer is particularly preferable.
The number average molecular weight of the polyfluoroolefin is preferably 50,000 or more, and more preferably 100,000 or more and 20,000,000 or less.

The polyfluoroolefin is preferably coated with a resin containing (meth) acrylate from the viewpoint of improving dispersibility in the resin. Examples of the (meth) acrylate include methyl methacrylate.
The polyfluoroolefin coated with the resin containing (meth) acrylate is not particularly limited and may be appropriately selected depending on the intended purpose. For example, MBS (methyl methacrylate / butadiene / styrene) resin may be used as the polyfluoroolefin. It can produce by adding and mixing.
A commercially available product can be used as the polyfluoroolefin coated with the resin containing the (meth) acrylate. Examples of the commercially available product include Methbrene A-3750 (manufactured by Mitsubishi Rayon Co., Ltd.).

  The content of the polyfluoroolefin is preferably 0.1 parts by mass to 2 parts by mass with respect to 100 parts by mass of the resin having a carbonate bond or the polymer alloy having the carbonate bond. When the content is less than 0.1 parts by mass, a drip prevention function at the time of combustion may not be obtained, and flame retardancy may be deteriorated. When the content exceeds 2 parts by mass, for example, (meth) acrylate is included. When polyfluoroolefin coated with a resin is used, the resin containing the coated (meth) acrylate may promote combustion.

<Flame Retardant>
The flame retardant resin composition of the second aspect of the present invention contains a flame retardant as an essential component. In addition, the flame retardant resin composition of the 1st form of this invention may contain a flame retardant as needed.
The flame retardant is not particularly limited and may be appropriately selected depending on the purpose. Examples thereof include phosphorus flame retardants, nitrogen compound flame retardants, silicone flame retardants, bromine flame retardants, and inorganic flame retardants. Can be mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, phosphorus flame retardants, nitrogen compound flame retardants, bromine flame retardants, and inorganic flame retardants are particularly preferable.

-Phosphorus flame retardant-
The phosphorus-based flame retardant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include phosphoric acid esters, phosphazene compounds, phosphorus-based flame retardants having a phosphaphenanthrene skeleton, and organic phosphorus-based compounds such as polyphosphate. Compound, red phosphorus and the like.

  Examples of the phosphate ester include trimethyl phosphate, triethyl phosphate, tributyl phosphate, tri (2-ethylhexyl) phosphate, tributoxyethyl phosphate, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tris (isopropylphenyl) phosphate. , Tris (phenylphenyl) phosphate, trinaphthyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate, diphenyl (2-ethylhexyl) phosphate, di (isopropylphenyl) phenyl phosphate, monoisodecyl phosphate, 2-acryloyloxyethyl acid Phosphate, 2-methacryloyloxyethyl acid phosphate, diphenyl 2-acryloyloxyethyl phosphate, diphenyl-2-methacryloyloxyethyl phosphate, melamine phosphate, dimelamine phosphate, melamine pyrophosphate, triphenylphosphine oxide, tricresylphosphine oxide, diphenyl methanephosphonate, diethyl phenylphosphonate, resorcinol Condensed phosphorus such as polyphenyl phosphate, resorcinol poly (di-2,6-xylyl) phosphate, bisphenol A polycresyl phosphate, biphenyl polycresyl phosphate, hydroquinone poly (2,6-xylyl) phosphate, or condensates thereof There may be mentioned acid esters. Examples of commercially available products of the condensed phosphate ester include PX-200, PX-201, PX-202, CR-733S, CR-741, CR747 manufactured by Daihachi Chemical Industry Co., Ltd .; ADEKA STAB FP-600 manufactured by ADEKA Corporation, and the like. Is mentioned.

Moreover, the phosphate, polyphosphate, etc. which consist of a salt with phosphoric acid and polyphosphoric acid, a periodic table group IA-IVB group metal, ammonia, an aliphatic amine, and an aromatic amine are mentioned.
Typical examples of the polyphosphate include lithium salts, sodium salts, calcium salts, barium salts, iron (II) salts, iron (III) salts, aluminum salts and the like as metal salts. Examples of the aliphatic amine salt include methylamine salt, ethylamine salt, diethylamine salt, triethylamine salt, ethylenediamine salt, piperazine salt and the like.
Examples of the aromatic amine salt include pyridine salt, triazine salt, melamine salt, and ammonium salt. Among these, nitrogen-containing phosphorus-based flame retardants and phosphinic acid metal salts are preferable, and specific examples include ammonium polyphosphate, phosphinic acid metal salts (salt types include aluminum, calcium, and zinc).

  In addition to the above, halogen-containing phosphate esters such as trischloroethyl phosphate, trisdichloropropyl phosphate, tris (β-chloropropyl) phosphate), phosphazene compounds having a structure in which a phosphorus atom and a nitrogen atom are linked by a double bond, Examples thereof include phosphoric ester amides and phosphorus-based flame retardants having a phosphaphenanthrene skeleton. As a commercial item of the phosphazene compound, for example, “Ravitor” (registered trademark) FP-100 manufactured by Fushimi Pharmaceutical Co., Ltd .; as a commercial item of a phosphorous flame retardant having a phosphaphenanthrene skeleton, for example, BCA manufactured by Sanko Co., Ltd. M-Ester etc. are mentioned.

As the red phosphorus, not only untreated red phosphorus but also red phosphorus treated with one or more compound films selected from a thermosetting resin film, a metal hydroxide film, and a metal plating film is preferably used. can do. The thermosetting resin of the thermosetting resin film is not particularly limited as long as it is a resin capable of coating red phosphorus, and can be appropriately selected according to the purpose. For example, phenol-formalin resin, urea-formalin Resin, melamine-formalin resin, alkyd resin and the like.
The metal hydroxide of the metal hydroxide coating is not particularly limited as long as it can coat red phosphorus, and can be appropriately selected according to the purpose. For example, aluminum hydroxide, magnesium hydroxide, water Examples include zinc oxide and titanium hydroxide.
The metal of the metal plating film is not particularly limited as long as it can coat red phosphorus, and can be appropriately selected according to the purpose. For example, Fe, Ni, Co, Cu, Zn, Mn, Ti, Zr , Al, or alloys thereof. These coatings may be used in combination of two or more, or may be laminated in two or more.

-Nitrogen compound flame retardant-
The nitrogen compound flame retardant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include aliphatic amine compounds, aromatic amine compounds, nitrogen-containing heterocyclic compounds, cyanide compounds, aliphatic amides, aromatic Group amide, urea, thiourea and the like.
Examples of the aliphatic amine include ethylamine, butylamine, diethylamine, ethylenediamine, butylenediamine, triethylenetetramine, 1,2-diaminocyclohexane, 1,2-diaminocyclooctane, and the like.
Examples of the aromatic amine include aniline and phenylenediamine.
Examples of the nitrogen-containing heterocyclic compound include uric acid, adenine, guanine, 2,6-diaminopurine, 2,4,6-triaminopyridine, and a triazine compound.
Examples of the cyan compound include dicyandiamide.
Examples of the aliphatic amide include N, N-dimethylacetamide.
Examples of the aromatic amide include N, N-diphenylacetamide.

  The triazine compound is a nitrogen-containing heterocyclic compound having a triazine skeleton. Examples include acids, diaminomercaptotriazine, diaminomethyltriazine, diaminophenyltriazine, diaminoisopropoxytriazine, melamine phosphate, melamine pyrophosphate, and melamine polyphosphate.

As the melamine cyanurate or melamine isocyanurate, an adduct of cyanuric acid or isocyanuric acid and a triazine compound is preferable, usually having a composition of 1: 1 (molar ratio), and sometimes 1: 2 (molar ratio). There may be mentioned adducts.
If the dispersibility of the nitrogen compound flame retardant is poor, a dispersant such as tris (β-hydroxyethyl) isocyanurate or a known surface treatment agent such as polyvinyl alcohol or metal oxide may be used in combination. Good.

-Silicone flame retardant-
There is no restriction | limiting in particular as said silicone type flame retardant, According to the objective, it can select suitably, For example, a silicone resin, silicone oil, etc. are mentioned.
Examples of the silicone resin include resins having a three-dimensional network structure formed by combining structural units of SiO ₂ , RSiO _3/2 , R ₂ SiO, and R ₃ SiO _1/2 . Here, R represents an alkyl group such as a methyl group, an ethyl group or a propyl group; an aromatic group such as a phenyl group or a benzyl group; and a substituent containing a vinyl group as the substituent.
Examples of the silicone oil include polydimethylsiloxane, at least one methyl group in the side chain or terminal of polydimethylsiloxane, a hydrogen atom, an alkyl group, a cyclohexyl group, a phenyl group, a benzyl group, an amino group, an epoxy group, and a polyether. Modified polysiloxane modified with at least one group selected from a group, a carboxyl group, a mercapto group, a chloroalkyl group, an alkyl higher alcohol ester group, an alcohol group, an aralkyl group, a vinyl group, and a trifluoromethyl group, or these A mixture etc. are mentioned.

-Brominated flame retardant-
The brominated flame retardant is not particularly limited and may be appropriately selected depending on the intended purpose.For example, decabromodiphenyl oxide, octabromodiphenyl oxide, tetrabromodiphenyl oxide, tetrabromophthalic anhydride, hexabromocyclododecane, Bis (2,4,6-tribromophenoxy) ethane, ethylenebistetrabromophthalimide, hexabromobenzene, 1,1-sulfonyl [3,5-dibromo-4- (2,3-dibromopropoxy)] benzene, poly Dibromophenylene oxide, tetrabromobisphenol-S, tris (2,3-dibromopropyl-1) isocyanurate, tribromophenol, tribromophenyl allyl ether, tribromoneopentyl alcohol, brominated polystyrene, Brominated epoxy resins such as sulfonated polyethylene, tetrabromobisphenol-A, tetrabromobisphenol-A derivatives, tetrabromobisphenol-A-epoxy oligomer or polymer, tetrabromobisphenol-A-carbonate oligomer or polymer, brominated phenol novolac epoxy Tetrabromobisphenol-A-bis (2-hydroxydiethyl ether), tetrabromobisphenol-A-bis (2,3-dibromopropyl ether), tetrabromobisphenol-A-bis (allyl ether), tetrabromocyclooctane, Ethylenebispentabromodiphenyl, tris (tribromoneopentyl) phosphate, poly (pentabromobenzylpolyacrylate), octabromotrimethyl Niruindan, dibromo neopentyl glycol, pentabromobenzyl polyacrylate, dibromo cresyl glycidyl ether, N, N'ethylene - bis - such as tetrabromo phthalic imide. These may be used individually by 1 type and may use 2 or more types together. Among these, tetrabromobisphenol-A-epoxy oligomer, tetrabromobisphenol-A-carbonate oligomer, and brominated epoxy resin are particularly preferable.
Examples of commercially available brominated flame retardants include brominated epoxy oligomers (manufactured by Sakamoto Pharmaceutical Co., Ltd., SR-T2000).

-Inorganic flame retardant-
The inorganic flame retardant is not particularly limited and may be appropriately selected depending on the intended purpose.For example, magnesium hydroxide, aluminum hydroxide, antimony trioxide, antimony pentoxide, sodium antimonate, zinc hydroxystannate, Zinc stannate, metastannic acid, tin oxide, tin oxide salt, zinc sulfate, zinc oxide, ferrous oxide, ferric oxide, stannous oxide, stannic oxide, zinc borate, calcium borate, boric acid Ammonium, ammonium octamolybdate, metal salt of tungstic acid, complex oxide acid of tungsten and metalloid, ammonium sulfamate, swellable graphite, and the like can be mentioned. These may be used individually by 1 type and may use 2 or more types together.
As a commercial item of the said inorganic type flame retardant, magnesium hydroxide (Bromochemfarist, FR-20) etc. are mentioned, for example.

  The content of the flame retardant varies depending on the type of the flame retardant, the optimum addition ratio is not particularly limited, and can be appropriately selected according to the purpose.

-Other ingredients-
The other components are not particularly limited, and can be appropriately selected according to the purpose from known additives used in the flame retardant resin composition. For example, the compatibilizer, the plasticizer, the oxidation Examples thereof include an inhibitor, an ultraviolet absorber, a processing aid, an antistatic agent, a colorant, a hydrolysis inhibitor, and a crystallization nucleating agent. These may be used in an amount appropriately selected within a range not impairing the effects of the present invention, and may be used alone or in combination of two or more.
Examples of the hydrolysis inhibitor include carbodiimide-modified isocyanate, organic phosphite metal salt compound, tetraisocyanate silane, monomethyl isocyanate silane, alkoxysilane, styrene-2-isopropenyl-2-oxazoline copolymer, 2,2-m. -Phenylenebis (2-oxazoline), and the like.
Preferable examples of the crystallization nucleating agent include talc nucleating agents, nucleating agents made of metal salt materials having a phenyl group, and nucleating agents made of benzoyl compounds. Other known crystallization nucleating agents such as lactate, benzoate, silica, and phosphate ester salts may be used without any problem.

  The flame-retardant resin composition of the present invention is excellent in moldability and can be suitably used in various fields, and can be formed into molded bodies of various shapes, structures, and sizes. It can be particularly suitably used for the body.

(Molded body)
The molded body of the present invention is not particularly limited except that it is obtained by molding the flame retardant resin composition of the present invention, and its shape, structure, size, etc. are appropriately selected according to the purpose. Can do.

The molding method is not particularly limited and may be appropriately selected from known methods according to the purpose. For example, film molding, extrusion molding, injection molding, blow molding, compression molding, transfer molding, calendaring Examples include molding, thermoforming, fluid molding, and lamination molding. Among these, when the molded body is used as an image output device such as a copying machine or a printer, or an electrical / electronic device such as a home appliance, any one selected from film molding, extrusion molding, and injection molding is preferable. Injection molding is particularly preferred.
For example, for molding of casing parts such as outer covers of copying machines, a mold whose temperature can be set with a water temperature controller using a 350-ton electric injection molding machine, mold temperature of 40 ° C., injection pressure By molding under molding conditions of 90 MPa and an injection speed of 10 mm / sec, it is possible to obtain a molded product that satisfies the appearance and dimensions.

-Analytical method of presence or absence of lignin sulfonate in molded body-
The presence or absence of lignin sulfonate in the molded body can be detected by, for example, analysis of lignin by gas chromatography or analysis of sulfone groups by atomic absorption spectrometry.

-Application-
The molded article of the present invention has both impact resistance and flame retardancy. For example, parts used in image output devices using electrophotographic technology, printing technology, or inkjet technology such as copying machines and laser printers, home appliances It can be suitably used as electrical and electronic equipment such as products, interior parts of automobiles, and the like.

Examples of the present invention will be described below, but the present invention is not limited to these examples.
About the flame-retardant resin composition of the 1st form of this invention, it shows to Examples A1-A11 and Comparative Examples A1-A2, and about the flame-retardant resin composition of the 2nd form of this invention, Example B1- Shown in B15 and Comparative Examples B1 to B3.

(Example A1)
<Preparation of flame retardant resin composition>
To 100 parts by mass of the polycarbonate resin, 0.1 part by mass of magnesium lignin sulfonate and 0.5 parts by mass of the polyfluoroolefin were added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A2)
<Preparation of flame retardant resin composition>
0.3 parts by mass of magnesium lignin sulfonate and 0.5 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A3)
<Preparation of flame retardant resin composition>
0.5 parts by mass of magnesium lignin sulfonate and 0.5 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A4)
<Preparation of flame retardant resin composition>
1.0 part by mass of magnesium lignin sulfonate and 0.5 part by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A5)
<Preparation of flame retardant resin composition>
To 100 parts by mass of the polycarbonate resin, 2.0 parts by mass of magnesium lignin sulfonate and 0.5 parts by mass of the polyfluoroolefin were added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A6)
<Preparation of flame retardant resin composition>
0.5 parts by mass of sodium lignin sulfonate and 0.5 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A7)
<Preparation of flame retardant resin composition>
0.5 parts by mass of calcium lignin sulfonate and 0.5 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A8)
<Preparation of flame retardant resin composition>
0.5 parts by mass of magnesium lignin sulfonate and 0.1 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A9)
<Preparation of flame retardant resin composition>
0.5 parts by mass of magnesium lignin sulfonate and 1.0 part by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A10)
<Preparation of flame retardant resin composition>
0.5 parts by mass of magnesium lignin sulfonate and 2.0 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example A11)
<Preparation of flame retardant resin composition>
0.5 parts by mass of magnesium lignin sulfonate and 3.0 parts by mass of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Comparative Example A1)
<Preparation of flame retardant resin composition>
To 100 parts by mass of the polycarbonate resin, 0 part by mass of magnesium lignin sulfonate (no addition) and 0.5 parts by mass of the polyfluoroolefin were added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Comparative Example A2)
<Preparation of flame retardant resin composition>
0.5 parts by mass of magnesium lignin sulfonate and 0 parts by mass (no addition) of polyfluoroolefin were added to 100 parts by mass of the polycarbonate resin. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B1)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.1 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B2)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B3)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 1.0 part by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B4)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 2.0 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B5)
<Preparation of flame retardant resin composition>
As a flame retardant, 0.5 parts by mass of magnesium lignin sulfonate, 3.0 parts by mass of polyfluoroolefin, and 100 parts by mass of PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer. 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B6)
<Preparation of flame retardant resin composition>
As 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.1 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B7)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.3 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B8)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B9)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 1.0 part by mass of magnesium lignin sulfonate, 0.5 part by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B10)
<Preparation of flame retardant resin composition>
As a flame retardant, 2.0 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and 100 parts by mass of PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer. 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B11)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a nitrogen compound flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B12)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a brominated flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B13)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 25 parts by mass of an inorganic flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B14)
<Preparation of flame retardant resin composition>
As 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of sodium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Example B15)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of calcium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant 7.5 parts by mass of a phosphorus flame retardant was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Comparative Example B1)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 part by mass of magnesium lignin sulfonate, 0 part by mass of polyfluoroolefin (no addition), and difficult 7.5 parts by mass of a phosphorus-based flame retardant was added as a flame retardant. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Comparative Example B2)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0.5 parts by mass of magnesium lignin sulfonate, 0.5 parts by mass of polyfluoroolefin, and a flame retardant Phosphorus flame retardant 0 part by mass (no addition) was added. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

(Comparative Example B3)
<Preparation of flame retardant resin composition>
For 100 parts by mass of a PC / ABS resin obtained by polymer-alloying a polycarbonate resin and an acrylonitrile-butadiene-styrene copolymer, 0 part by mass of magnesium lignin sulfonate (no addition), 0.5 parts by mass of polyfluoroolefin, and difficult 7.5 parts by mass of a phosphorus-based flame retardant was added as a flame retardant. These were dry blended and then melt kneaded at a temperature of 240 ° C. using a twin-screw kneading extruder to produce pellets of about 3 mm square.

  Next, UL94 vertical combustion test pieces and Charpy impact test specimens were prepared using the prepared pellets as follows, and UL94 vertical combustion test, Charpy impact test, and comprehensive evaluation were performed. The results are shown in Table 1.

<Preparation of UL94 vertical combustion test piece>
Each of the produced pellets was subjected to a drying treatment at 80 ° C. for 5 hours using a shelf type hot air dryer. Then, using an electric injection molding machine with a clamping force of 100 tons, for a UL94 vertical combustion test at a mold temperature of 60 ° C., a cylinder temperature of 240 ° C., an injection speed of 20 mm / sec, an injection pressure of 100 MPa, and a cooling time of 30 sec. A strip test piece was prepared. The produced strip test piece was 13 mm in width, 125 mm in length, and 1.6 mm in thickness.

<UL94 vertical combustion test>
Each of the produced strip test pieces was aged at 50 ° C. for 72 hours, and then cooled in a desiccator with a humidity of 20% RH for 3 hours. Next, a set of five test pieces was used, and a vertical combustion test based on the UL94 standard was performed. The test method will be described below.
The upper end of each strip test piece is clamped and held vertically, and absorbent cotton (0.8 g or less, 50 mm square) is placed 300 mm ± 10 mm below the lower end of each strip test piece. Was found to fall on the absorbent cotton. The flame contact (first time) was performed for 10 ± 1 second from the lower end of each strip test piece, and then the burner was separated from the test piece at a speed of about 300 mm / second. As soon as the combustion disappeared, the burner was returned to the lower end of the sample, and flame contact (second time) was performed for 10 ± 1 seconds. A set of five test pieces was subjected to flame contact 10 times in total, and the burning time of each test piece was recorded.
Here, “combustion time” means the combustion continuation time after flame removal. The first combustion time was t1, the second combustion time was t2, and the second combustion after-burning duration was t3. Here, the “second flame duration after the second combustion” refers to the time during which the flame remains in the test piece but the red flame remains on the test piece.

[Determination method of UL94 vertical combustion test]
Determination by the UL94 vertical combustion test was performed by the following method.
(1) For each test piece, the measured continuation of combustion after flame release is t1 and t2, and if these are 10 seconds or less, “V-0”, and if they are 30 seconds or less, “V-1” or “V-2” Was determined. For the boundary to distinguish between “V-1” and “V-2”, whether or not the cotton is ignited by the dripping substance during combustion is the standard according to the evaluation described in (5) below. When cotton is ignited, it is “V-2”, and when there is no cotton, it is “V-1”.
(2) If the combustion duration (t1 + t2) of all five test pieces was 50 seconds or less, it was determined as “V-0”, and if it was 250 seconds or less, it was determined as “V-1” or “V-2”.
(3) “V-0” if the sum of the combustion duration and the fire type duration after the second flame contact (t2 + t3) is 30 seconds or less, “V-1” or “V-2” if it is 60 seconds or less It was determined.
(4) If it could be confirmed that there was no burning up to the clamp, it was accepted.
(5) Ignition of absorbent cotton by burning and falling objects was evaluated. If there was no ignition, it was determined as “V-0” or “V-1”, and if there was ignition, it was determined as “V-2”.
Here, when there is no ignition, the boundary between “V-0” and “V-1” is based on the measurement results of the combustion durations (t1 + t2) and (t2 + t3) in (2) and (3) above. If (t1 + t2) is 50 seconds or less, it is “V-0”, and if it is greater than 50 seconds and 250 seconds or less, it is “V-1”. If (t2 + t3) is 30 seconds or less, “V-0” is obtained, and if (t2 + t3) is greater than 30 seconds and 60 seconds or less, “V-1” is obtained.
About each of said (1)-(5), what satisfy | filled all the conditions of "V-0" and "V-1" evaluated that it was in a pass level practically. In addition, when not satisfying "V-2", it described as "NG".

<Preparation of Charpy impact test specimen>
Each of the produced pellets was subjected to a drying treatment at 50 ° C. for 12 hours using a shelf type hot air dryer. Then, using an electric injection molding machine with a clamping force of 100 tons, Charpy impact test under the setting conditions of mold temperature 60 ° C, cylinder temperature 240 ° C, injection speed 20mm / s, injection pressure 100MPa, cooling time 30sec. A test piece was prepared. This test piece is a type 1 test piece having a length of 80 mm, a width of 10 mm, and a thickness of 4 mm. A single notched test piece was prepared by notching the type 1 test piece by a type A notch cutting process.

<Charpy impact test>
A Charpy impact test based on JIS K7111 was performed using the prepared single notched test piece, and evaluation was performed according to the following criteria.
〔Evaluation criteria〕
-Polycarbonate resin (virgin material: 9.0 kJ / m ² )-
○: 6.75kJ / ^{m 2} or more △: 4.5kJ / ^{m 2} or more 6.75kJ / ^{m 2} less ×: 4.5kJ / ^{m 2} less than -PC / ABS resin (virgin material: 80kJ / ^{m 2)} For −
○: 60 kJ / m ² or more Δ: 40 kJ / m ² or more and less than 60 kJ / m ² ×: less than 40 kJ / m ²

<Comprehensive evaluation>
When the result of the UL94 vertical combustion test is “V-2” or less and the result of the Charpy impact test is any of “x”, the overall evaluation is “x”, otherwise the overall evaluation is Was evaluated as “◯”.

  Here, Table 1 shows the blended composition (parts by mass) of the flame-retardant resin composition used in Examples and Comparative Examples, and the results of UL94 vertical combustion test, Charpy impact test, and comprehensive evaluation.

Here, the specific contents of the components used in Examples and Comparative Examples in Tables 1-1 to 1-7 are as shown below.
* A-1: Polycarbonate resin, manufactured by Mitsubishi Engineering Plastics Co., Ltd., Iupilon H-3000, aromatic polycarbonate resin * A-2: PC / ABS resin (PC with polymer alloy of polycarbonate resin and acrylonitrile-butadiene-styrene copolymer) : ABS = 70 mass%: 30 mass%), manufactured by Teijin Chemicals Ltd., Multilon T-3714,
* B-1: Magnesium lignin sulfonate, manufactured by Nippon Paper Chemicals Co., Ltd., Sun Extract P321
* B-2: Sodium lignin sulfonate, manufactured by Nippon Paper Chemicals Co., Ltd., Sun Extract P252
* B-3: Calcium lignin sulfonate, manufactured by Nippon Paper Chemicals Co., Ltd., Sun Extract P201
* C-1: Polyfluoroolefin, polyfluoroolefin coated with a resin containing (meth) acrylate, Mitsubishi Rayon Co., Ltd., Metabrene A-3750
* D-1: Phosphorous flame retardant, manufactured by ADEKA Corporation, Adeka Stab FP-600, condensed phosphate ester * D-2: Nitrogen compound-based flame retardant, manufactured by ADEKA Co., Ltd., Adeka Stub FP-2100
* D-3: Brominated flame retardant, Sakamoto Yakuhin Kogyo Co., Ltd., SR-T2000, brominated epoxy oligomer * D-4: Inorganic flame retardant, Bromochemfarist, FR-20, magnesium hydroxide

From the results of Examples A1 to A5 and Comparative Example A1, flame retardant performance is not obtained when lignin sulfonate is not added, and if the amount of lignin sulfonate added is too large, the resin is heated by molding. It was found that decomposition occurred and the impact strength decreased.
From the results of Examples B1 to B5 and Comparative Example B1, in the case where no polyfluoroolefin is added, the resin drip frequently occurs in the flame retardancy test and the cotton ignition cannot be prevented. On the other hand, it has been found that if the amount of polyfluoroolefin added is excessively increased, the flame retardancy performance decreases due to the combustion of polytetrafluoroethylene.
Moreover, from the results of Example B2 and Comparative Example B2, it was found that in the case of a PC / ABS resin, the flame retardant performance is improved by the addition of a phosphorus flame retardant.

  Since the flame-retardant resin composition of the present invention has excellent impact resistance and flame retardancy, it is suitable for image output equipment using electrophotographic technology, printing technology or ink-jet technology such as copying machines and laser printers. It can be widely used as parts used, electrical and electronic equipment such as home appliances, and interior parts of automobiles.

JP 2006-233006 A

Claims (8)

  A flame retardant resin composition comprising at least a resin having a carbonate bond, a lignin sulfonate, and a polyfluoroolefin.   The flame-retardant resin composition according to claim 1, wherein the resin having a carbonate bond is at least one of an aromatic polycarbonate resin and an aliphatic polycarbonate resin.   A flame retardant resin composition comprising at least a polymer alloy having a carbonate bond, a lignin sulfonate, a polyfluoroolefin, and a flame retardant.   The polymer alloy having a carbonate bond is a polycarbonate resin and at least one selected from acrylonitrile-butadiene-styrene copolymer, rubber-modified polystyrene resin, acrylonitrile-styrene copolymer, and methyl (meth) acrylate-modified rubber. The flame retardant resin composition according to claim 3, which is a polymer alloy.   The lignin sulfonate is one of sodium lignin sulfonate, calcium lignin sulfonate, and magnesium lignin sulfonate, and the lignin sulfonate with respect to 100 parts by mass of a resin having a carbonate bond or a polymer alloy having a carbonate bond. The flame retardant resin composition according to any one of claims 1 to 4, wherein 0.1 to 1 part by mass of the flame retardant resin is contained.   The polyfluoroolefin is coated with a resin containing (meth) acrylate and contains 0.1 to 2 parts by mass of the polyfluoroolefin with respect to 100 parts by mass of a resin having a carbonate bond or a polymer alloy having a carbonate bond. The flame-retardant resin composition according to any one of claims 1 to 5.   The flame retardant resin composition according to any one of claims 3 to 6, wherein the flame retardant is at least one selected from a phosphorus flame retardant, a nitrogen compound flame retardant, a bromine flame retardant, and an inorganic flame retardant. object.   A molded article obtained by molding the flame retardant resin composition according to any one of claims 1 to 7.