WO2005054359A1 - 樹脂組成物及びこの樹脂組成物を用いた成形品並びに樹脂組成物の製造方法 - Google Patents
樹脂組成物及びこの樹脂組成物を用いた成形品並びに樹脂組成物の製造方法 Download PDFInfo
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- WO2005054359A1 WO2005054359A1 PCT/JP2004/017729 JP2004017729W WO2005054359A1 WO 2005054359 A1 WO2005054359 A1 WO 2005054359A1 JP 2004017729 W JP2004017729 W JP 2004017729W WO 2005054359 A1 WO2005054359 A1 WO 2005054359A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
- C08L3/06—Esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/02—Dextran; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
Definitions
- Resin composition molded article using this resin composition, and method for producing resin composition
- the present invention relates to a resin composition exhibiting biodegradability, a molded article and an electric product using the resin composition, and further relates to a method for producing the resin composition.
- biodegradable natural cellulose such as biocellulose, starch-based plastic, low-substituted cellulose ester, microbial natural polyester, and chemically synthesized aliphatic polyester resin are used.
- the production and use of plastics with certain properties are being studied. Since biodegradable resin is biochemically decomposed into microorganisms and water by microorganisms, etc., it is easily decomposed even if discarded to the natural environment. As a result, the molecular weight is reduced to a compound harmless to the environment. Therefore, by using the biodegradable resin, it is possible to reduce adverse effects on the global environment due to disposal. For these reasons, the use of discarded products, mainly household goods, sanitary goods or play goods, has been promoted.
- biodegradable resins to impart physical properties suitable for practical molded articles.
- an appropriate amount of a biodegradable resin exhibiting rubber-like properties with a low glass transition point is blended with an aliphatic polyester resin, a typical example of a biodegradable polymer, to improve biodegradability and moldability.
- Method of adding calcium carbonate and Z or magnesium carbonate to aliphatic polyester resin to improve mechanical strength, melting poly-hydroxybutyric acid, quenching and solidifying, and having a crystallinity of less than 50% A method of improving biodegradability by using a molded article of such as has been proposed.
- An object of the present invention is to provide a novel resin capable of solving the problems of the prior art. It is an object of the present invention to provide a composition, a molded article and an electric product using the resin composition, and a method for producing the resin composition.
- Another object of the present invention is to provide a resin composition capable of achieving both high flame retardancy required for a housing material of an electric appliance and storage characteristics, and a composition using the resin composition.
- An object of the present invention is to provide a method for producing a shaped article, an electric product, and a resin composition thereof. The present inventors have conducted various studies on the improvement of the physical properties of biodegradable resin, and found that the addition of a flame-retardant additive to the biodegradable resin can improve the flame retardancy. I found out.
- Halogen-based flame-retardant additives are representative of flame-retardant additives, but when biodegradable resin containing halogen-based flame-retardant additives is incinerated, halogen gas is generated, and this halogen gas is generated. There is an inconvenience that complicated processing is required to make harmless to the human body.
- the resin composition according to (1) comprises at least one biodegradable polysaccharide, a flame-retardant additive containing a hydroxide, and hydrolytic hydrolysis that inhibits the hydrolysis of at least one polysaccharide. And an inhibitor.
- the molded article according to the present invention comprises at least one kind of biodegradable polysaccharide, a flame-retardant additive containing a hydroxide, and at least one kind of hydrolysis of the above-mentioned polysaccharide.
- a resin composition containing a hydrolysis inhibitor is formed.
- the electrical product according to the present invention comprises at least one biodegradable polysaccharide, a flame-retardant additive containing a hydroxide, and a hydrolysis inhibitor that inhibits the hydrolysis of at least one polysaccharide. And a molded product obtained by molding a resin composition containing the agent.
- the method of the present invention comprises the steps of: providing at least one biodegradable polysaccharide, a flame-retardant additive containing a hydroxide, and hydrolyzing the at least one polysaccharide.
- a resin composition is produced by compounding with a decomposition inhibitor.
- a hydroxide as a flame retardant additive to the biodegradable polysaccharide, when the biodegradable polysaccharide is subjected to high heat, the hydroxide is endothermic and decomposed. Expresses flame retardant effect by water generation, high against polysaccharides that show biodegradability! ⁇ Flame retardancy can be provided.
- the addition of a hydrolysis inhibitor that inhibits hydrolysis slows the rate of hydrolysis of polysaccharides that exhibit biodegradability, and as a result, as compared to the case where no hydrolysis inhibitor is added, a longer period of time. , A high mechanical strength can be maintained.
- the resin composition according to the present invention contains a specific flame-retardant additive and a hydrolysis inhibitor with respect to the polysaccharide exhibiting biodegradability, so that both the flame retardancy and the storage characteristics are improved. Can be satisfied.
- another resin composition according to the present invention comprises at least one biodegradable polysaccharide.
- Inorganic flame retardant compound boric acid flame retardant compound, halogen flame retardant compound, organic flame retardant compound, colloidal flame retardant compound, nitrogen flame retardant compound It contains a flame-retardant additive containing at least one of the compounds, and a hydrolysis inhibitor that inhibits the hydrolysis of at least one polysaccharide.
- another molded article according to the present invention comprises at least one kind of biodegradable polysaccharide, an inorganic flame retardant compound, a boric acid flame retardant compound, and a halogen flame retardant compound.
- a flame-retardant additive containing at least one of an organic flame-retardant compound, a colloid-based flame retardant compound, and a nitrogen-based flame retardant compound, and hydrolysis of at least one polysaccharide. It is a molded resin composition containing a hydrolysis inhibitor to be suppressed.
- Another electric product according to the present invention comprises at least one kind of biodegradable polysaccharide, an inorganic flame retardant compound, a boric acid flame retardant compound, a halogen flame retardant compound, and an organic flame retardant compound.
- a molded article obtained by molding a resin composition containing the agent.
- Another method of the present invention is to provide at least one biodegradable polysaccharide, an inorganic flame retardant compound, a boric acid flame retardant compound, a halogen flame retardant compound, and an organic flame retardant compound.
- a flame-retardant caloate containing at least one of a colloid-based flame-retardant conjugate and a nitrogen-based flame-retardant conjugate A resin composition is produced by combining an agent and a hydrolysis inhibitor that inhibits hydrolysis of at least one polysaccharide.
- Inorganic flame retardant compounds, boric acid flame retardant compounds, halogen flame retardant compounds, organic flame retardant compounds, and organic flame retardant compounds as flame retardant additives to organic polymer compounds exhibiting biodegradability.
- a colloid-based flame retardant compound and a nitrogen-based flame retardant compound By containing at least one of a colloid-based flame retardant compound and a nitrogen-based flame retardant compound, high flame retardancy can be imparted to polysaccharides that exhibit biodegradability.
- the addition of a hydrolysis inhibitor that inhibits hydrolysis slows the rate of hydrolysis of polysaccharides that exhibit biodegradability, and as a result, as compared to the case where no hydrolysis inhibitor is added, a longer period of time. , A high mechanical strength can be maintained.
- the resin composition according to the present invention contains a specific flame-retardant additive and a hydrolysis inhibitor with respect to the polysaccharide exhibiting biodegradability, so that both the flame retardancy and the storage characteristics are improved. Can be satisfied. All of the resin compositions according to the present invention have extremely high flame retardancy satisfying the range of V-0 to V-1 of the UL standard, and excellent storage characteristics such that they can be used as housings of electric products. It also has a low impact on the natural environment when disposed.
- the resin composition according to the present invention a biodegradable organic polymer compound, a hydroxide as a flame retardant additive, and a hydrolysis rate of the biodegradable organic polymer compound were adjusted.
- the resin composition containing the hydrolysis inhibitor described above will be described.
- a biodegradable organic polymer compound refers to a low molecular weight compound, In other words, compounds that eventually decompose into water and carbon dioxide (Biodegradable Plastics Study Group, ISOZTC-207ZSC3)!
- a polysaccharide is used as the organic polymer compound having biodegradability.
- Polysaccharides contained in the fat composition include cellulose, starch, chitin, chitosan, and dextra. Or a derivative thereof, or a copolymer containing at least one of them.
- Polysaccharides have the advantage of having higher heat resistance than aliphatic polyester resins, which are typical biodegradable polymers.
- the above compounds and the like may be used alone, or two or more kinds may be used in combination.
- various plasticizers can be added to the polysaccharide to impart thermoplasticity.
- cellulose derivatives include, for example, esterified cellulose, and specific esters of cellulose include organic acid esters such as cenorellose acetate, cenorellose butyrate, and cenorellose propionate, cellulose nitrate, cellulose sulfate, and cellulose phosphate. At least one of inorganic acid esters such as cellulose acetate propionate, cellulose acetate monobutyrate, cellulose acetate phthalate, and cellulose ester derivatives such as cellulose acetate nitrated with cellulose nitrate acetate; and polyproprolactone-grafted cellulose acetate. And the like. These esterified celluloses can be used alone or in combination of two or more.
- the esterified cellulose used in this example can be produced according to a known method.
- Esteridani cellulose can be produced by completely acetylating cellulose and then partially saponifying the cellulose. Further, a plasticizer is added to the produced esteri-dani cellulose to increase the molding calorie property.
- the plasticizer is not particularly limited as long as it is a plasticizer having good biodegradability and an excellent plasticizing effect, but is more preferably a phosphate ester or a carboxylate ester in which a low molecular weight ester plasticizer is preferred. ! / ,.
- the phosphoric ester examples include triphenyl phosphate (TPP) and tricresyl phosphate (TCP), cresyl diphenyl phosphate, octyl diphenyl phosphate, diphenyl biphenyl phosphate, trioctyl phosphate, tributyl phosphate and the like. Can be mentioned.
- carboxylic acid ester examples include phthalic acid ester, citrate ester and the like.
- phthalic acid esters include dimethyl phthalate (DMP), getyl phthalate (DEP), dibutyl phthalate (DBP), octyl phthalate (DOP), diphenyl phthalate, (DPP) and getyl hexyl phthalate (DE HP). included.
- citrate esters include triethyl O-acetylquenate (OAC TE), tributyl O-acetylquenate (OACTB), acetyltriethyl atenate, acetyltributyl teate, and the like.
- carboxylic acid ester examples include various trimellitate esters such as butyl oleate, methyl acetyl ricinoleate, and dibutyl sebacate. They may be used alone or in combination of two or more.
- Glycolic acid esters can also be used, and specific examples include triacetin, triptyline, butyrphthalyl butyl dalicolate, ethyl phthalyl ethyl darikolate, methyl phthalyl ethyl dalcolate, and butyl phthalyl butyl dalicolate.
- plasticizers may be used alone or in combination of two or more.
- the starch-substituted derivative which is a modified starch
- the basic method for producing a starch-substituted derivative, which is a synthetic starch, is esteri-dani, and the starch ester produced by these reactions is a low-substituted aqueous reaction esterified starch (starch ester). It has been known for some time.
- Starch Science Node Book (July 20, 1997), published by Asakura Shoten Co., Ltd., p550)
- dimethylaminopyridine and alkali metals are converted from acid anhydrides in pyridine.
- a starch substituted as a modified starch may be obtained by adding a natural fatty acid or the like to the starch as a raw material and subjecting it to etherification and graft polymerization.
- a natural fatty acid or the like may be added to the starch as a raw material and subjecting it to etherification and graft polymerization.
- a plasticizer may be added.
- it may be a starch-substituted derivative that can be thermoplastically added without adding a plasticizer or using a small amount of a plasticizer (for example, see JP-A-2000-159802).
- plasticizer to be added to starch such as starch ester
- various plasticizers which are preferably plasticizers having high compatibility with starch ester
- phthalic acid esters include phthalic acid esters such as dimethyl 'getyl' dibutyl; and phthalic acid esters such as ethyl phthaloylethyl cholesterol and butyl phthaloyl butyl dallicolate include oleic acid and adipine.
- polyhydric alcohol esters such as acid, methyl stearic acid methyl 'ethyl' butyl and isopropyl, sucrol acetate, ethyl glycol benzoate, triacetin (triacetyl glycerin), tripropione (tripropioyl glycerin), acetyl
- oxyesters such as diglycerin, etc., methyl acetyl ricinoleate and triethyl acetyl citrate; for phosphate esters, such as tributyl phosphate and triphenyl phosphate; for epoxy plasticizers, epoxidized soybean oil, epoxidized castor oil, alkyl epoxy Stay
- polymeric plasticizers such as arelates, various liquid rubbers, terbenes, linear polyesters, etc., among them, especially esters such as triethyl acetylquenate, ethylphthaloylethyl, suc
- a hydroxide is blended in the resin composition as a flame retardant additive.
- the flame-retardant additive can be compounded (added) to a material to be added mainly composed of a polymer material such as resin by mixing or fixing.
- the flame-retardant additive functions as a flame retardant, a stabilizer, and an extender, and is a biodegradable organic polymer that is a material to which the present invention is applied.
- the compound can be imparted with, for example, flame retardancy, stability, extendability, and the like.
- hydroxide as a flame retardant additive in biodegradable organic polymer compounds
- high heat for example, 500 ° C or more
- the hydroxide absorbs the heat generated when the resin burns and decomposes. At the same time, it generates water, and exhibits flame retardancy due to the endothermic effect and the generation of water.
- This flame-retardant additive has high flame retardancy and decomposes into components that are safe for living organisms and the global environment, such as alumina, water, and carbon dioxide, after disposal, which has a negative effect on the surrounding environment and the human body. There is no fear.
- hydroxyl compound which is a component of the flame retardant additive
- a compound containing a hydroxyl group in a molecule and capable of generating water by heating can be used.
- Specific hydroxides include metal hydroxides containing a metal element in the composition, specifically aluminum hydroxide, magnesium hydroxide, calcium hydroxide, zinc hydroxide, cerium hydroxide, and water.
- the hydroxide has a purity of about 99.5% or more. This is because the higher the purity of the hydroxide, the better the storage stability when a hydrolysis inhibitor is combined.
- the purity of the hydroxide can be measured by a known method.
- the purity of the hydroxide can be obtained by measuring the content of impurities contained in the hydroxide by a known method and subtracting the content of the impurities from the total amount. More specifically, for example, in the case of aluminum hydroxide, impurities include Fe203, Si02, TNa20, S-Na20, and the like.
- the content of Fe203 can be determined by dissolving in sodium carbonate boric acid solution and then using an O-phenanthamine phosphorous absorption spectrophotometer (JIS H1901).
- the content of Si02 can be determined by molybdenum blue absorption spectrophotometry CFIS H 1901) after melting in sodium carbonate boric acid solution.
- the content of T Na20 is determined by flame photometry after melting in sulfuric acid, and S-Na20 is determined by flame photometry after extraction with hot water.
- the shape of the hydroxide sword used is not particularly limited, but is preferably granular.
- the particle size can be appropriately selected according to the type of the flame retardant additive.
- the hydroxide preferably has an average particle size of about 100 m or less determined by a laser diffraction method. In this case, the particle size distribution does not matter. From the viewpoint of injection moldability in the molding process and dispersibility at the time of kneading, the average particle diameter is more preferably smaller in the above-mentioned range, which is preferable.
- the hydroxide it is preferable to use particles having a BET specific surface area of about 20 m2Zg or less determined by a nitrogen gas adsorption method.
- a plurality of compounds having different BET specific surface areas can be used in combination in order to increase the filling rate of the composition. From the viewpoint of moldability, it is more preferable that the BET specific surface area is smaller than the above range, which is preferable.
- the flame-retardant additive contains a nitrogen compound together with the hydroxide.
- the nitrogen compound which is a component of the flame-retardant additive one that generates a combustion-inhibiting gas by heating can be used.
- the nitrogen compound is decomposed to generate a combustion-inhibiting gas, thereby improving the flame-retardant effect of the material to be added.
- This improvement in flame retardancy is considered to be due to the relative decrease in oxygen required for combustion near the target material due to the generation of combustion inhibiting gas.
- the combustion inhibiting gas is a nitrogen gas generated by the decomposition of a nitrogen compound, or a nitrogen-containing gas such as a nitrogen oxide gas such as nitrogen dioxide gas, nitric oxide gas, and N20 gas. .
- the flame retardant-based additive contains both a hydroxide and a nitrogen compound
- high heat for example, 500 ° C. or more
- hydroxylation occurs.
- the flame retardant effect of the substance and the flame retardant effect of the nitrogen-containing combustion inhibiting gas generated by decomposition of the nitrogen compound work in synergy.
- a molded article of the biodegradable resin composition containing the flame-retardant additive of the present invention is heated, it is formed by heating a nitrogen compound.
- Nitric oxide-based gas (NxOy-based gas) reacts with water generated by the heating of the hydroxide, and due to the thermal oxidation of nitric acid generated by the reaction, polymer compounds such as biodegradable resin Is transformed into non-combustible materials such as C02 and H20, giving high flame retardancy. For this reason, by using a hydroxide and a nitrogen compound as a flame retardant additive, a higher biodegradable organic polymer compound is obtained as compared with a case where a hydroxide is used alone. Flame retardancy can be imparted.
- the nitrogen compound which is a component of the flame-retardant additive can be, for example, a compound containing at least a nitrogen oxide represented by NxOy (X and y are natural numbers) in the composition. You. Specifically, for example, it is preferable to use a nonmetallic nitric acid compound and Z or a nonmetallic nitrous acid compound.
- acetyl nitrate C2H3N04
- phosphorous nitrate C6H8N203
- methyl nitrate CH30N03
- ethyl nitrate C2H50N02
- butyl nitrate C4H90N02
- isoamyl nitrate ((CH3) 2CHCH2CH20N02)
- isobutyl nitrate Nitric acid esters (RON02) such as toluene ((CH3) 2CHCH20N02) and isopropyl nitrate ((CH3) 2CHON02), ammonium nitrate (NH4N03), guanidine nitrate (CH6N403), cellulose nitrate acetate (nitroacetylcellulose) , Cellulose nitrate (nitrocellulose), urea nitrate, hydrodium nitrate (N2H5N03), hydroxylammonium nitrate ((NH30) N03),
- the nitrogen compound preferably has an average particle size of 100 ⁇ m or less. If it exceeds 100 ⁇ m, the filling rate and dispersibility may be reduced, which is not preferable.
- the flame-retardant additive may be subjected to surface treatment such as silane-based, titanate-based, aluminum-based, zircoaluminum-based, fatty acid-based, wax-based, and surfactants.
- silane coupling agents, titanate coupling agents, aluminate coupling agents, etc. were used, and fatty acids such as stearic acid, oleic acid, linoleic acid, linolenic acid, and eleostearic acid were used.
- fatty acids such as stearic acid, oleic acid, linoleic acid, linolenic acid, and eleostearic acid were used.
- calcium salts and zinc salts of the above fatty acids as fatty acid salts, and polyethylene glycol derived as nonionic surfactants Those using a body or the like can be used.
- the amount of the flame retardant additive should be 1 part by weight to 50 parts by weight of the nitrogen compound and 20 parts by weight to 120 parts by weight of the hydroxide based on 100 parts by weight of the target organic polymer compound. Is preferred. When the amount of the nitrogen compound is less than 1 part by weight, the above-mentioned effects are not sufficiently exhibited, and when the amount exceeds 50 parts by weight, the mechanical strength of the organic polymer compound to be added may be impaired.
- the addition amount of the nitrogen compound is more preferably about 1 to 20 parts by weight.
- the added amount of the hydroxyl sulfide is 20 parts by weight or less, the above-mentioned effects are not sufficiently exhibited, and when the amount exceeds 120 parts by weight, the strength of the polymer compound to be added is sufficiently reduced. It may not be able to keep.
- the optimum addition amount of the hydroxide stalk is 30 parts by weight to 100 parts by weight.
- the hydrolysis inhibitor used in this example is not particularly limited as long as it is an additive or the like that inhibits hydrolysis of the biodegradable polymer compound.
- a hydrolysis inhibitor that suppresses the hydrolysis of the biodegradable polymer compound By containing a hydrolysis inhibitor that suppresses the hydrolysis of the biodegradable polymer compound, the hydrolysis rate of the biodegradable polymer compound is delayed, and as a result, high mechanical strength and impact strength over a long period of time can be obtained. If it can be maintained !, it exhibits high storage characteristics.
- the hydrolysis inhibitor include compounds having reactivity with active hydrogen in a biodegradable polymer compound.
- active hydrogen refers to hydrogen in a bond (N—H bond or O—H bond) between oxygen and nitrogen or the like and hydrogen, and such hydrogen is hydrogen in a bond between carbon and hydrogen (CH bond).
- examples include hydrogen in a biodegradable polymer compound such as a carboxyl group: COOH, a hydroxyl group: OH, an amino group: NH2, or an amide bond: NHCO—.
- a carbodiimide compound As the compound having reactivity with active hydrogen in the biodegradable polymer compound, a carbodiimide compound, an isocyanate compound, an oxazoline compound, or the like can be used.
- a carbodiimide compound is preferable because it can be melt-kneaded with a biodegradable polymer compound, and the addition of a small amount can further suppress the hydrolyzability.
- Carposimide compounds are compounds having one or more carposimide groups in the molecule. And polycarbodiimide conjugates. As a method for producing the above carbodiimide compound,
- a catalyst for example, O, O dimethyl-O— (3-methyl-4-trophenyl) phosphorothioate, ⁇ , O dimethyl-0— (3-methyl-4 (methylthio) phenyl) phosphorothioate, Organic phosphorus compounds such as ⁇ , O-getyl-O-2-isopropyl-6-methylpyrimidine-4-yl phosphorothioate, or organic compounds such as rhodium complex, titanium complex, tungsten complex, and «radium complex
- a solvent-free or inert solvent such as hexane, benzene, dioxane, chloroform, etc. at a temperature of about 70 ° C or more.
- Examples of the monocarbodiimide conjugate contained in the carposimide compound include dicyclohexylcarbodiimide, diisopropylcarbodiimide, dimethylcarbodiimide, diisobutylcarbodiimide, dioctylcarbodiimide, difluorocarbodiimide, and naphthylcarbodiimide. Of these, dicyclohexylcarbodiimide-diisopropylcarbodiimide, which is industrially easily available, is particularly preferable.
- Examples of the isocyanate compound which is a compound reactive with active hydrogen in the biodegradable polymer compound include 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, m Range isocyanate, p-Phenylene diisocyanate, 4,4'-Diphenylmethane diisocyanate, 2,4'-Diphenylmethane diisocyanate, 2, 2'-Diphenylmethane diisonate Cyanate, 3,3'-dimethyl-4,4'-biphenylene diisocyanate, 3,3'-dimethoxy-4,4'-biphenylene diisocyanate, 3,3'-dichloro-4,4'-biphenylene Isocyanate, 1,5 naphthalene diisocyanate, 1,5-tetrahydronaphthalene diisocyanate, tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate,
- the isocyanate conjugate can be easily produced by a known method, and a commercially available product can be appropriately used.
- a commercially available polyisocyanate distillate an aromatic isocyanate adduct such as coronate (manufactured by Nippon Polyurethane Co .; hydrogenated diphenylmethane diisocyanate) or mylionate (manufactured by Nippon Polyurethane Co., Ltd.) is used. It is possible.
- composition of the present example is produced by melt-kneading
- a polyisocyanate compound in which a solid substance, for example, an isocyanate group is blocked with a masking agent (such as a polyhydric aliphatic alcohol or an aromatic polyol) from a liquid.
- a masking agent such as a polyhydric aliphatic alcohol or an aromatic polyol
- Examples of oxazoline-based compounds that are reactive with active hydrogen in a biodegradable polymer compound include 2,2′-o-phen-bis (2-year-old xazoline) and 2,2′-m-phenyl.
- the type and amount of the hydrolysis inhibitor are not particularly limited, but the biodegradation rate of the molded article, and consequently the mechanical strength, can be adjusted by appropriately adjusting the type and amount of the hydrolysis inhibitor. It can be determined according to the target product.
- the amount of the hydrolysis inhibitor is preferably 20 parts by weight or less, more preferably 13 parts by weight or less, based on 100 parts by weight of the organic polymer compound.
- the method for producing the resin composition of this example is not particularly limited, and a known method may be used.
- a preferable example is a method in which a polysaccharide exhibiting biodegradability is produced by melt-kneading the above-mentioned flame-retardant additive.
- a flame-retardant additive and a hydrolysis inhibitor are added and mixed before or when the biodegradable organic polymer compound is melted.
- the flame retardant additive and the hydrolysis inhibitor may be added at the same time, or may be added individually. When adding individually, any of them may be added first. After the biodegradable organic polymer compound is melted, either the flame retardant additive or the hydrolysis inhibitor is added and mixed, and the resulting composition is melted again to inhibit hydrolysis. A method of adding the remaining component of either the agent or the flame-retardant additive and mixing the mixture is also included. Further, the hydroxide and the nitrogen compound as the flame retardant additives may be added simultaneously or individually. Further, as the flame-retardant additive, a compound in which constituent components are combined may be used. They may be used alone or in combination of two or more.
- additives for improving performance can be appropriately used as long as the object of the present invention is not impaired.
- Other additives include, for example, reinforcing agents, antioxidants, heat stabilizers, ultraviolet absorbers, etc., as well as decomposable substances such as lubricants, waxes, coloring agents, crystallization accelerators, anti-driving agents, and starch. But are not limited to these. These additives may be used alone or in combination of two or more.
- the reinforcing material examples include fillers such as inorganic fillers and organic fillers.
- Inorganic fillers include, for example, carbon, silicon dioxide, metal oxide fine particles such as alumina, silica, magnesia, or ferrite, silicates such as talc, myrite, kaolin, zeolite, zeolite, sulfuric acid, etc. Examples include fine particles of barium, calcium carbonate, fullerene, and the like.
- the inorganic filler include glass microbeads, carbon fiber, silica, quartz such as novoculite, asbestos, feldspar, and mica.
- the organic filler examples include epoxy resin, melamine resin, urea resin, acrylic resin, phenol resin, polyimide resin, polyamide resin, polyester resin, and Teflon (registered trademark) resin. . Among them, carbon and silicon dioxide are preferable.
- the reinforcing material is not limited to the above, and any commonly used filler such as an inorganic filler and an organic filler can be used. The reinforcing material may be used alone or in combination of two or more.
- antioxidant for example, phenol-based, amine-based, phosphorus-based, diazo-based, hydroquinone And quinoline-based antioxidants.
- phenol-based antioxidants include hindered phenols such as 2,6-di-tert-butyl-p-cresol and 1,3,5-trimethyl 2,4,6-tris (3,5-di-tert-butyl-4).
- Di- or trioxy-C alkyls such as [xifene) propionate], for example, triethylene glycol bis [3- (3-tbutyl-5-methyl-4-hydroxyphenyl) propionate].
- Alkanetriol bis [3- (3,5-dibranched C alkyl 4) such as glycerin tris [3- (3,5-di-tert-butyl-4-hydroxyphenyl) pulpionate].
- amine antioxidants examples include phenyl-1-naphthylamine, phenyl-2-naphthylamine, N, N'-diphenyl-1,4 phenylenediamine, or N-phenyl N'-cyclohexylamine 1,4 phen-dienamine and the like.
- Examples of the phosphorus-based antioxidant include triisodecyl phosphite, triphenyl phosphite, trisnoylphenyl phosphite, diphenylisodecyl phosphite, phenyldidecyl phosphite, 2,2-methylenebis (4 , 6-di-butylbutyl) octylphosphite, 4,4'butylidenebis (3-methyl-6-tertbutylphenyl) ditridecylphosphite, tris (2,4-dibutylbutylphenyl) phosphite, tris ( 2t-butyl-4-methylphenyl) phosphite, tris (2,4-dimethylphenyl) phosphite, tris (2tbutylphenyl) phosphite, bis (2-tbutylphenyl) phenyl phos
- hydroquinone-based antioxidant examples include 2,5-di-tert-butylhydroquinone, and examples of the quinoline-based antioxidant include 6-ethoxy-2,2,4-trimethyl-1,2. —Dihydroquinoline and the like, and examples of the zirconium antioxidant include dilaurylthiodipropionate, distearylthiodipropionate and the like.
- preferred antioxidants include phenolic antioxidants, especially hindered phenols, for example, polyol poly [(branched C alkyl group and hydroxy group substituted phenol)
- the acid-proofing agents may be used alone or in combination of two or more.
- the heat stabilizer examples include bases such as polyamide, poly j8-alanine copolymer, polyacrylamide, polyurethane, melamine, cyanoazine, and melamine formaldehyde condensate.
- Nitrogen-containing compounds such as volatile nitrogen-containing compounds; metal salts of organic carboxylic acids (calcium stearate, calcium 12-hydroxystearate, etc.), metal oxides (magnesium oxide, calcium oxide, aluminum oxide, etc.), metal water Oxides (magnesium hydroxide, calcium hydroxide, aluminum hydroxide, etc.), alkali or alkaline earth metal-containing conjugates such as metal carbonates; zeolite; In particular, alkali or alkaline earth metal-containing conjugates (particularly alkali earth metal-containing conjugates such as magnesium compounds and calcium compounds), zeolite, and hydrated talcite are preferable.
- the heat stabilizers may be used alone or in combination of two or more.
- Examples of the ultraviolet absorber include conventionally known benzophenone-based, benzotriazole-based, cyanoacrylate-based, salicylate-based and oxalic acid-based compounds.
- benzophenone [2-hydroxy-4- (methacryloyloxyethoxy) benzophenone] -methyl methacrylate copolymer, [2-hydroxy-4-((methacryloyloxymethoxy) benzophenone] -methyl methacrylate copolymer, [2-hydroxy-4-] (Methacryloyloxy octoxy) benzophenone] -methyl methacrylate copolymer, [2-hydroxy-4 (methacryloyloxydedecoxy) benzophenone] -methyl methacrylate copolymer, [2-hydroxy-4 (methacryloyloxy benzyloxy) [Benzophenone] -methyl methacrylate copolymer, [2,2'-dihydroxy-4- (methacryloyloxyethoxy) be
- the lubricant examples include petroleum-based lubricating oils such as liquid paraffin; synthetic lubricating oils such as halogenated hydrocarbons, diester oils, silicone oils, and fluorosilicones; various modified silicone oils (epoxy-modified, amino-modified, alkyl-modified, Silicon-based lubricating substances such as copolymers of silicon with organic compounds such as polyoxyalkylene daricol); Silicon copolymers; Various fluorine-based surfactants such as fluoroalkyl conjugates Fluoro-lubricating substances such as methylene low-polymers; waxes such as paraffin wax and polyethylene wax; higher aliphatic alcohols, higher aliphatic amides, higher fatty acid esters, And higher fatty acid salts, and molybdenum disulfide.
- petroleum-based lubricating oils such as liquid paraffin
- synthetic lubricating oils such as halogenated hydrocarbons, diester oils, silicone oils, and fluorosilicon
- silicone copolymer a resin obtained by polymerizing silicone with a block-graft
- Silicone copolymers include acrylic resin, polystyrene resin, poly-tolyl resin, polyamide resin, polyolefin resin, epoxy resin, polybutyranole resin, melamine resin, and salt. It is preferable to use a silicone graft copolymer obtained by blocking or graft-polymerizing silicon on a daniburu resin, a polyurethane resin or a polybutyl ether resin. These lubricating substances may be used alone or in combination of two or more.
- waxes examples include olefin waxes such as polypropylene wax, polyethylene wax and the like, paraffin wax, fish chatropush wax, microcrystalline petas, montan wax, fatty acid amide waxes, higher aliphatic alcohol waxes, Fatty acid-based wax, fatty acid ester-based wax, carnauba wax, rice wax, and the like. These waxes may be used alone or in combination of two or more.
- Examples of the colorant include an inorganic pigment, an organic pigment, and a dye.
- examples of the inorganic pigment include a chromium-based pigment, a cadmium-based pigment, an iron-based pigment, a cobalt-based pigment, ultramarine, navy blue, and the like.
- organic pigments and dyes include, for example, carbon black; phthalocyanine pigments, such as phthalocyanine copper; quinacridone pigments, such as quinacridone magenta and quinacridone red; e.g., nonzayaro, disazoeello, permanent yellow, Azo pigments such as permanent red, naphthol red; for example, Spirit Black SB, -Grosin base, -Glossine dyes such as oil black BW, oil blue, pigment yellow, pigment blue, pigment red, etc. or Al Cali blue and the like.
- the coloring agents may be used alone or in combination of two or more.
- crystallization promoter examples include organic salts such as sodium pt-butyl benzoate, sodium montanate, calcium montanate, sodium palmitate, calcium stearate; and the like; for example, calcium carbonate, calcium silicate, magnesium silicate, and sulfuric acid.
- Inorganic salts such as calcium, barium sulfate and talc; and metal oxides such as zinc oxide, magnesium oxide and titanium oxide.
- These crystallization accelerators may be used alone or in combination of two or more.
- a thermosetting resin such as a fluorine resin or a phenol resin can be used.
- the fluorine-containing resin examples include homo- or copolymers of fluorine-containing monomers such as tetrafluoroethylene, black trifluoroethylene, vinylidene fluoride, hexafluoropropylene, and perfluoroalkylbutyl ether; And copolymers with copolymerizable monomers such as ethylene, propylene and (meth) acrylate.
- fluorine-containing monomers such as tetrafluoroethylene, black trifluoroethylene, vinylidene fluoride, hexafluoropropylene, and perfluoroalkylbutyl ether
- copolymers with copolymerizable monomers such as ethylene, propylene and (meth) acrylate.
- These anti-driving agents may be used alone or in combination of two or more.
- the resin composition of this example may be subjected to a known treatment.
- the resin composition of this example may be irradiated with an
- Examples of the active energy ray source include an electromagnetic wave, an electron beam or a particle beam, and a combination thereof.
- the electromagnetic wave include ultraviolet (UV) and X-rays
- examples of the particle beam include elementary particles such as protons and neutrons.
- electron beam irradiation using an electronic calorie is preferred.
- the active energy ray can be irradiated using a known device.
- a UV irradiation device, an electron accelerator, and the like can be given.
- the irradiation dose and the irradiation intensity are not particularly limited as long as the hydrolysis of the biodegradable polymer compound is effectively delayed in the resin composition according to the present invention of the present example.
- the acceleration voltage is preferably about 100 to 5000 kV, and the irradiation dose is preferably about lkGy or more.
- the molded product obtained by molding the resin composition of this example can be applied to various uses.
- the method for molding a molded article include air pressure molding, film molding, extrusion molding, injection molding, and the like.
- injection molding is preferable.
- extrusion molding can be performed according to a conventional method, using a known extrusion molding machine such as a single-screw extruder, a multi-screw extruder, and a tandem extruder.
- Injection molding can be carried out according to a conventional method, for example, using a known injection molding machine such as an in-line screw injection molding machine, a multilayer injection molding machine, or a two-head injection molding machine.
- the method for producing the molded article by molding the resin composition of this example is not particularly limited, and any known molding method can be used.
- the organic polymer compound showing biodegradability, and the hydroxide as a flame retardant additive And a hydrolysis inhibitor for example, extremely high flame retardancy that satisfies the range of VO to VI when evaluated in the UL flammability test, and excellent storage that can be used, for example, as a housing for electrical products Characteristics.
- the resin composition of the present example which also has the power of the resin composition, is mainly composed of biodegradable resin which is a component safe for the living body, and is easily decomposed in the natural environment.
- the negative impact on the environment after disposal can be reduced. Therefore, by applying such molded products to the housing and packaging materials of electrical products, it is possible to realize sufficient environmental considerations compared to the case where existing synthetic resins or biodegradable resins are used. it can.
- the molded product obtained by molding the resin composition of this example is suitable for being applied to a part of the following electrical products, for example, in which it has been difficult to apply the biodegradable resin.
- Specific electrical products include, for example, stationary AV devices such as DVD (digital versatile disk) players, CD (compact disk) players, MD (minidisk) players, amplifiers, speakers, and AV / IT devices for vehicles.
- Stationary video game machines, portable video game machines, mobile phones, telephones, facsimile machines, copy machines, entertainment robots, etc., and the molded article of this example can be used as a housing for these electric products.
- the molded article of the present example can be used for other components such as components and structural materials constituting an electric product that can be formed only by a housing or the like of the electric product.
- the use of the resin composition of the present example which also has the power of the resin composition, is not limited to this. Of course, it can be applied to all applications such as packaging, automotive applications, industrial products, etc. Next, examples of the resin composition according to the present invention will be described.
- biodegradable organic polymer compounds examples include (A1) acetyl cellulose (360E-16, manufactured by Daicel Finechem), and (A2) esterified starch (CPR-3M, manufactured by Nippon Cornstarch), (B ) A hydrolysis inhibitor (Calpositlite HMV-8CA, manufactured by Nisshinbo Industries, Ltd.) and a flame retardant additive (C1) hydroxylated aluminum (Wako Pure Chemical Industries, Ltd.) were used. Melt kneading was used for mixing A, B and C.
- the kneading conditions were as follows: a minimax-mix ruder (manufactured by Toyo Seiki Co., Ltd.) was used as the kneading machine, the nozzle temperature was 170 to 175 ° C, the torque was 416 kg, the residence time was within 3 seconds, and the kneading was carried out. Additives were added to the fat. After the obtained resin composite was pulverized, it was pressed at 170 ° C at 300 kg / cm2 to form a plate having a thickness of 1. Omm, cut out to a size of 12.7 mm x 127 mm, and measured. And Example 1 The composition of the test piece of Example 10 and Comparative Example 11 is shown in Table 1 below.
- the vertical flammability test was performed using the above test piece in accordance with UL94 flammability test V-0-V-2. The method is described below.
- the flame is adjusted by adjusting the gas supply and the air port of the burner so that the yellow blue flame with a height of 19 mm is emitted first, and then the amount of air is adjusted so that the yellow flame is eliminated. I do. Measure the height of the flame again and adjust if necessary.
- the sample force melts or flammable material drops during each flame contact, tilt the burner to a 45 ° angle during the flame contact and also apply a slight force to one of the 12.7 mm surfaces of the sample.
- the material may be kept away to avoid dripping of the material into the burner tube. If melting or flammable substances drip from the sample or continue to burn during the test, hold the burner and keep a 9.5 mm gap between the lower end of the sample and the tip of the burner tube during flame contact. Spacing must be maintained. All drops of molten material shall be negligible and shall be flamed in the center of the sample.
- 94V-1 certified material that is, material certified as 94V-1 must meet the following conditions.
- the specimen force shall not ignite dry surgical cotton wool 305 mm below due to dripping of the substance.
- the molded article having high flame retardancy according to the present invention has biodegradability, some degree of storage stability is required for use as a molded article in a housing of an electric device or the like. That As the evaluation, the storage stability under high temperature and high humidity was evaluated. The evaluation was performed by storing each sample at a temperature of 80 ° C and a relative humidity of 80% for 100 hours, and then measuring the shape and molecular weight of the polymer. The test pieces used were the same as those in the combustion test described above. No problem was found in the shape. A sample with a molecular weight retention rate of 80% from before the evaluation was secured. The molecular weight was evaluated by GPC (Gel Permeation Chromatography).
- Example 1 The results of the combustion test and the storage test of Example 10 and Comparative Example 1 and Comparative Example 6 are shown in Table 1 below.
- “UL94-V1; ⁇ ” indicates that the material is a 94V-1 certified material
- “UL94-V1; X” indicates that it is not a 94V-1 certified material.
- Examples 1 to 10 containing the biodegradable polysaccharide (A1 or A2), the hydrolysis inhibitor (B) and the hydroxide (C1) as a flame-retardant additive were used. Showed high flame retardancy, satisfying the UL94V-1 standard, and also had good storage characteristics. In contrast, Comparative Example 3 and Comparative Example 6, which did not contain the flame retardant additive component, did not satisfy the UL94V-1 standard. Further, Comparative Examples 2 and 5, which contained the hydroxyl amide (C 1) but did not contain the hydrolysis inhibitor, had good flame retardancy, but had impaired storage characteristics.
- Example 11 The compositions of the test pieces of Example 20 and Comparative Example 7 to Comparative Example 10 are shown in Table 2 below.
- Example 11 containing hydroxide (C1) and nitrogen compound (C2) as biodegradable polysaccharide (A1 or A2), hydrolysis inhibitor (B), and flame retardant additive was conducted.
- Example 20 exhibited high flame retardancy satisfying the UL94V-1 standard and also had good storage characteristics.
- Comparative Examples 8 and 10 which did not contain the flame retardant additive component did not satisfy the UL94V-1 standard.
- Comparative Examples 7 and 9 which contained a flame retardant additive but did not contain a hydrolysis inhibitor, although the flame retardancy was good, the storage characteristics were impaired.
- the biodegradable polysaccharide was added as a flame retardant additive to hydroxylamine. It has been found that the combination of a substance, a nitrogen compound, and a hydrolysis inhibitor can achieve both flame retardancy and storage characteristics.
- an organic polymer compound having biodegradability and an inorganic flame retardant compound, a boric acid flame retardant compound, and a halogen flame retardant as flame retardant additives.
- a resin composition containing one type and a hydrolysis inhibitor for controlling the hydrolysis rate of a biodegradable organic polymer compound will be described.
- a polysaccharide is used in the same manner as the above-described resin composition.
- this polysaccharide the same one as described above is used, so that further detailed description will be omitted with reference to the above description.
- examples of the flame retardant additives include inorganic flame retardant compounds, boric acid flame retardant compounds, halogen flame retardant compounds, organic flame retardant compounds, and colloidal flame retardant compounds.
- Compounds, nitrogen-based flame-retardant conjugates and the like can be used, but are not limited thereto.
- the flame retardant additives the following flame retardant conjugates can be used alone or in combination.
- Examples of the inorganic flame-retardant conjugate include zinc sulfate, potassium hydrogen sulfate, aluminum sulfate, antimony sulfate, sulfate, potassium sulfate, cobalt sulfate, sodium hydrogen sulfate, iron sulfate, copper sulfate, sodium sulfate, and sulfuric acid.
- Metal sulfate compounds such as nickel, barium sulfate, and magnesium sulfate; ammon-based flame-retardant conjugates such as ammonium sulfate; iron oxide-based combustion catalysts such as hues, metal nitrate compounds such as copper nitrate; and titanium oxide Titanium-containing compounds such as guanidine sulfamate, etc., and other carbonate compounds such as zirconium-based compounds, molybdenum-based compounds, tin-based compounds, and potassium carbonate, and modified products thereof.
- borate-based flame retardant conjugate examples include boric acid-containing compounds such as zinc borate hydrate, barium metaborate, and borax.
- halogen-based flame retardant conjugate examples include chlorinated paraffin, monochlorocyclopentadecane, hexabromobenzene, decabromodiphenol-oxide, and bis (tribromopheno).
- organic flame-retardant conjugate examples include compounds containing chlorendic anhydride, phthalic anhydride, bisphenol A, glycidyl compounds such as glycidyl ether, polyhydric alcohols such as diethylene glycol and pentaerythritol, and denaturing power.
- examples include rubamide, silicon oil, or silica-based compounds such as silicon dioxide, low-melting glass, and organosiloxane.
- colloid-based flame retardant conjugates include, for example, water-soluble materials such as calcium aluminate, dihydrate gypsum, zinc borate, barium metaborate, borax, kaolin clay, etc.
- examples thereof include a nitrate compound such as a Japanese product, sodium nitrate, etc., a molybdenum compound, a zirconium compound, an antimony compound, dawsonite, and a colloid of a flame retardant compound such as progopite.
- nitrogen-based flame retardant conjugate examples include a cyanurate conjugate having a triazine ring.
- hydrolysis inhibitor used in the resin composition of the present example examples include the resin group described above. There is no particular limitation as long as it is an additive or the like that suppresses the hydrolysis of the biodegradable polymer compound, as in the case of the product.
- the resin composition of this example also contains a hydrolysis inhibitor that suppresses the hydrolysis of the biodegradable polymer compound, thereby delaying the hydrolysis rate of the biodegradable polymer compound. If high mechanical strength and impact strength can be maintained over a long period of time, it will show high storage characteristics.
- hydrolysis inhibitor examples include compounds having reactivity with active hydrogen in biodegradable high molecular compounds, as described above.
- the compounds described above can be used as they are, and further detailed description will be omitted with reference to the above description.
- the type and amount of the hydrolysis inhibitor used in the resin composition of this example are not particularly limited as well as those used in the resin composition described above.
- the biodegradation rate of the molded article, and hence the mechanical strength, can be adjusted by appropriately adjusting the amount and the like, and thus may be determined according to the target product.
- the amount of the hydrolysis inhibitor is preferably 20 parts by weight or less, and more preferably 13 parts by weight or less, based on 100 parts by weight of the organic polymer compound.
- the method is not particularly limited, and a known method may be used.
- a preferred example is a method in which the above-mentioned flame-retardant additive is melt-kneaded with a polysaccharide exhibiting biodegradability.
- a flame-retardant additive and a hydrolysis inhibitor are added and mixed before or when an organic polymer compound having biodegradability is melted.
- the flame retardant additive and the hydrolysis inhibitor may be added at the same time, or may be added individually. When adding individually, any of them may be added first. After the biodegradable organic polymer compound is melted, either the flame retardant additive or the hydrolysis inhibitor is added and mixed, and the resulting composition is melted again to inhibit hydrolysis. A method of adding the remaining component of either the agent or the flame-retardant additive and mixing the mixture is also included.
- additives for improving the performance can be appropriately used as long as the object of the present invention is not impaired.
- Other additives include, for example, supplements In addition to strong materials, antioxidants, heat stabilizers, ultraviolet absorbers, etc., lubricants, waxes, coloring agents, crystallization accelerators, anti-driving agents, degradable organic substances such as starch and the like can be mentioned. Power is not limited to these.
- These additives may be used alone or in combination of two or more.
- the reinforcing material added to the resin composition of this example include fillers such as inorganic fillers and organic fillers. As these filters, the above-mentioned ones can be used as they are, and therefore detailed description will be omitted with reference to the above description.
- antioxidant for example, a phenol-based, amine-based, phosphorus-based, zeo-based, hydroquinone-based, or quinoline-based anti-irridation agent can be used in the same manner as described above. Since specific examples of these anti-irritating agents are as described above, detailed description thereof will be omitted with reference to the above description.
- heat stabilizer and the ultraviolet absorber that can be used as additives that can be used in the resin composition of this example those described above can be used as they are, so refer to the above description. Detailed description is omitted.
- the lubricants waxes, coloring agents, crystallization accelerators, anti-driving agents, and decomposable organic substances such as starch, which can be used as additives, those described above can be used as they are.
- a detailed description will be omitted with reference to the above description.
- the resin composition of this example may be subjected to a known treatment.
- the resin composition of this example may be irradiated with an active energy ray in order to suppress the hydrolysis of the biodegradable polymer compound in the resin composition.
- Examples of the active energy ray source include an electromagnetic wave, an electron beam or a particle beam, and a combination thereof.
- the electromagnetic wave include ultraviolet (UV) and X-rays
- examples of the particle beam include elementary particles such as protons and neutrons.
- electron beam irradiation using an electronic calorie is preferred.
- the active energy ray can be irradiated using a known device.
- a UV irradiation device, an electron accelerator, and the like can be given.
- the irradiation dose and irradiation intensity are not particularly limited as long as the hydrolysis and the hydrolysis of the biodegradable polymer compound are effectively delayed in the resin composition of this example.
- the accelerating voltage is about 100-5000 kV
- the preferred irradiation dose is about lkGy or more.
- Molded articles obtained by molding the resin composition of this example are also applicable to various uses.
- Examples of the method for molding a molded article include air pressure molding, film molding, extrusion molding, injection molding, and the like.
- injection molding is preferable.
- extrusion molding can be performed according to a conventional method, using a known extrusion molding machine such as a single-screw extruder, a multi-screw extruder, and a tandem extruder.
- Injection molding can be carried out according to a conventional method, for example, using a known injection molding machine such as an in-line screw injection molding machine, a multilayer injection molding machine, or a two-head injection molding machine.
- the method for producing the molded article by molding the resin composition of this example is not particularly limited, and any known molding method can be used.
- the resin composition of this example comprises an organic polymer compound having biodegradability, an inorganic flame retardant compound, a boric acid flame retardant compound, and a halogen flame retardant as flame retardant additives.
- an organic flame retardant compound, a colloidal flame retardant compound, and a nitrogen flame retardant compound, and a hydrolysis inhibitor By including at least one of the following compounds, an organic flame retardant compound, a colloidal flame retardant compound, and a nitrogen flame retardant compound, and a hydrolysis inhibitor, Extremely high flame retardancy, satisfying the range from VO to VI when evaluated in the UL flammability test, and excellent storage characteristics that can be used, for example, as a housing for electrical products can be achieved.
- the molded article made of the resin composition of this example is mainly composed of a biodegradable resin which is a component safe for living organisms, and is easily decomposed in the natural environment. The adverse effects on the environment can be reduced. Therefore, by applying such molded products to the housing and packaging materials of electrical products, it is possible to realize sufficient environmental considerations compared to the case where existing synthetic resins and biodegradable resins are used. it can.
- Molded products obtained by molding the resin composition of this example are also similar to products using the resin composition described above, and are used in some of the electrical products for which biodegradable resins have been difficult to apply. It is suitable for application. Since the specific electrical products are the same as those described above, detailed description will be omitted with reference to the above description.
- the use of the resin composition of the present example which also has a strong resin composition, is not limited to this example, and exhibits biodegradability, so that not only disposable products such as daily necessities, sanitary goods or play goods, but also Applicable to all uses such as packaging materials, automotive applications, industrial products
- examples of the resin composition of the present example will be described.
- organic polymer compound having biodegradability (A1) acetyl cellulose (360E-16, manufactured by Daicel FineChem) and (A2) esterified starch (CPR-3M, manufactured by Nippon Cornstarch) ), (B) hydrolysis inhibitor (Carbodilite HMV-8CA, manufactured by Nisshinbo Industries), flame retardant additive (C1; zinc sulfate, manufactured by Wako Pure Chemical Industries, Ltd., C2: barium metaborate, manufactured by Wako Pure Chemical Industries, Ltd.) , C3; tetrabromobisphenol A derivative, manufactured by DSBG; C4; triazine, manufactured by Wako Pure Chemical Industries, Ltd.).
- hydrolysis inhibitor Carbodilite HMV-8CA, manufactured by Nisshinbo Industries
- flame retardant additive C1; zinc sulfate, manufactured by Wako Pure Chemical Industries, Ltd., C2: barium metaborate, manufactured by Wako Pure Chemical Industries, Ltd.
- the melt kneading method was used for mixing A, B and C.
- the kneading conditions were as follows: a minimax-mix ruder (manufactured by Toyo Seiki Co., Ltd.) was used as the kneading machine, the nozzle temperature was 170 to 175 ° C, the torque was 416 kg, the residence time was within 3 seconds, and the kneading was carried out. Additives were added to the fat. After the obtained resin composite was pulverized, it was pressed at 170 ° C at 300 kg / cm2 to form a plate having a thickness of 1. Omm, cut out to a size of 12.7 mm x 127 mm, and measured. And Examples 21 to 28 and Comparative Example 11 The compositions of the test pieces of Comparative Example 16 are shown in Table 3 below.
- test specimens of Examples 21 to 28 and Comparative Example 11 and Comparative Example 16 produced as described above were subjected to a combustion test and a storage test as follows, and evaluated for flame retardancy and storage characteristics. .
- the vertical flammability test was performed using the above test piece in accordance with UL94 flammability test V-0-V-2. The method is described below.
- the sample force melts or flammable material drops during each flame contact, tilt the burner to a 45 ° angle during the flame contact and also apply a slight force to one of the 12.7 mm surfaces of the sample.
- the material may be kept away to avoid dripping of the material into the burner tube. If melting or flammable substances drip from the sample or continue to burn during the test, hold the burner and keep a 9.5 mm gap between the lower end of the sample and the tip of the burner tube during flame contact. Spacing must be maintained. All drops of molten material shall be negligible and shall be flamed in the center of the sample.
- 94V-1 certified material that is, material certified as 94V-1 must meet the following conditions.
- the specimen force shall not ignite dry surgical cotton wool 305 mm below due to dripping of the substance.
- the molded article having high flame retardancy according to the present invention has biodegradability, some degree of storage stability is required for use as a molded article in a housing of an electric device or the like.
- storage stability under high temperature and high humidity was evaluated. The evaluation was performed at a temperature of 80 ° C for each sample. The sample was stored at 80% relative humidity for 100 hours, and then the shape and molecular weight of the polymer were measured. The test pieces used were the same as those in the combustion test described above. No problem was found in the shape. A sample with a molecular weight retention rate of 80% from before the evaluation was secured. The molecular weight was evaluated by GPC (Gel Permeation Chromatography).
- Example 21-Example 28 and Comparative Example 11-Comparative Example 16 are shown in Table 1 below.
- Table 1 The results of the combustion test and the storage test of Example 21-Example 28 and Comparative Example 11-Comparative Example 16 are shown in Table 1 below.
- “UL94-V1; ⁇ ” indicates that the material is a 94V-1 certified material
- “UL94-V1; X” indicates that it is not a 94V-1 certified material.
- biodegradable polysaccharides can be added to inorganic flame retardant compounds, boric acid flame retardant compounds, halogen flame retardant compounds, nitrogen flame retardant compounds, etc. It has been found that the combination of the flame retardant compound and the hydrolysis inhibitor makes it possible to achieve both flame retardancy and storage characteristics.
- the present invention is limited to the above-described examples. It will be apparent to those skilled in the art that various modifications, substitutions, or equivalents can be made without departing from the scope of the appended claims and the spirit thereof.
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Abstract
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US10/596,139 US20070257239A1 (en) | 2003-12-02 | 2004-11-29 | Resin Composition, Molded Product Obtained From Resin Composition and Method for Preparation of Resin Composition |
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PCT/JP2004/017729 WO2005054359A1 (ja) | 2003-12-02 | 2004-11-29 | 樹脂組成物及びこの樹脂組成物を用いた成形品並びに樹脂組成物の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070257239A1 (ja) |
EP (1) | EP1698658A4 (ja) |
KR (1) | KR20070001889A (ja) |
WO (1) | WO2005054359A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101974213A (zh) * | 2010-11-25 | 2011-02-16 | 四川奎克生物科技有限公司 | 一种可降解抑菌食物包装材料及其制备方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1690899A4 (en) * | 2003-12-02 | 2011-07-06 | Sony Corp | RESIN COMPOSITION, FORM BODY THEREOF AND METHOD FOR PRODUCING THE RESIN COMPOSITION |
US20060225950A1 (en) * | 2003-12-08 | 2006-10-12 | Hiroyuki Ishida | Speaker cabinet |
WO2010105076A1 (en) * | 2009-03-11 | 2010-09-16 | Nuvision Bioplastics, Llc | Biodegradable resin composition utilized in the manufacture of biodegradable containers, biodegradable containers, and method of manufacture |
JP5650033B2 (ja) * | 2011-03-29 | 2015-01-07 | 富士フイルム株式会社 | 難燃性樹脂組成物、その製造方法、及び成形品 |
CN103525132A (zh) * | 2013-10-09 | 2014-01-22 | 太原理工大学 | 一种显著降低硅灰石吸油值的方法 |
CN106132692B (zh) * | 2014-03-18 | 2018-04-27 | 株式会社可乐丽 | 多层结构体及其制造方法、使用其得到的包装材料和制品、电子设备的保护片材以及涂布液 |
JP7444536B2 (ja) * | 2018-08-31 | 2024-03-06 | イーストマン ケミカル カンパニー | 樹脂組成物及び樹脂成形体 |
Citations (3)
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JP2002302613A (ja) * | 2001-01-31 | 2002-10-18 | Ishizuka Glass Co Ltd | 難燃性付与用材料、及び難燃性高分子材料 |
JP2003192925A (ja) * | 2001-10-15 | 2003-07-09 | Sony Corp | 生分解性を有する難燃性複合組成物およびその製造方法 |
JP2003327842A (ja) * | 2002-05-09 | 2003-11-19 | Ishizuka Glass Co Ltd | 難燃剤および難燃性樹脂組成物 |
Family Cites Families (5)
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JP2742892B2 (ja) * | 1995-03-03 | 1998-04-22 | 日本コーンスターチ株式会社 | エステル化ポリエステルグラフト化澱粉 |
CA2395427A1 (en) * | 1999-12-08 | 2001-06-14 | National Institute Of Advanced Industrial Science And Technology | Biodegradable resin compositions |
US20020151631A1 (en) * | 2001-01-31 | 2002-10-17 | Ishizuka Garasu Kabushiki Kaisha | Flame-retardant material and flame-retardant polymer material |
JP2002338816A (ja) * | 2001-05-15 | 2002-11-27 | Ishizuka Glass Co Ltd | 難燃性付与用複合材料、及びその製造方法 |
CN100383192C (zh) * | 2002-04-24 | 2008-04-23 | 索尼株式会社 | 具有生物降解性的阻燃性复合组合物和其生产方法 |
-
2004
- 2004-11-29 WO PCT/JP2004/017729 patent/WO2005054359A1/ja active Application Filing
- 2004-11-29 KR KR1020067010701A patent/KR20070001889A/ko active IP Right Grant
- 2004-11-29 US US10/596,139 patent/US20070257239A1/en not_active Abandoned
- 2004-11-29 EP EP04819808A patent/EP1698658A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002302613A (ja) * | 2001-01-31 | 2002-10-18 | Ishizuka Glass Co Ltd | 難燃性付与用材料、及び難燃性高分子材料 |
JP2003192925A (ja) * | 2001-10-15 | 2003-07-09 | Sony Corp | 生分解性を有する難燃性複合組成物およびその製造方法 |
JP2003327842A (ja) * | 2002-05-09 | 2003-11-19 | Ishizuka Glass Co Ltd | 難燃剤および難燃性樹脂組成物 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101974213A (zh) * | 2010-11-25 | 2011-02-16 | 四川奎克生物科技有限公司 | 一种可降解抑菌食物包装材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20070001889A (ko) | 2007-01-04 |
EP1698658A1 (en) | 2006-09-06 |
EP1698658A4 (en) | 2011-06-29 |
US20070257239A1 (en) | 2007-11-08 |
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