WO2005033201A1 - ポリアセタール樹脂組成物 - Google Patents
ポリアセタール樹脂組成物 Download PDFInfo
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- WO2005033201A1 WO2005033201A1 PCT/JP2004/013828 JP2004013828W WO2005033201A1 WO 2005033201 A1 WO2005033201 A1 WO 2005033201A1 JP 2004013828 W JP2004013828 W JP 2004013828W WO 2005033201 A1 WO2005033201 A1 WO 2005033201A1
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- carboxylic acid
- resin composition
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- acid hydrazide
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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
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
- C08G2/24—Copolymerisation of aldehydes or ketones with acetals
Definitions
- the present invention relates to a polyacetal resin composition which significantly suppresses formaldehyde generation, has excellent moldability and can suppress blooming, a method for producing the same, and a molded article formed from the resin composition.
- Polyacetal resins are excellent in mechanical properties, fatigue resistance, friction resistance, abrasion resistance, chemical resistance, and moldability, and are therefore used in automobile parts, electric parts, electronic equipment parts, and other precision mechanical parts. It is widely used in the fields of building materials 'piping members, lifestyle' cosmetic parts, medical parts and so on. However, with the expansion of uses and variety, a polyacetal resin having better quality is required.
- the properties required for polyacetal resin include that the mechanical strength does not decrease in a processing step such as an extrusion or molding step, that no deposit (mold deposit) is generated on a mold, and that long-term heating is not performed.
- the mechanical properties under the conditions (heat aging) do not decrease, and molding defects such as silver streaks and voids do not occur in molded products.
- One of the important factors that lead to such deterioration in strength and physical properties and poor molding is decomposition of the polymer upon heating.
- polyacetal resin is inherently easily decomposed under acidic or alkaline conditions in a heated oxidizing atmosphere due to its chemical structure.
- an essential problem of polyacetal resin is to suppress the generation of formaldehyde, which is a molding process in which thermal stability is high, or the strength of molded products.
- Formaldehyde which is chemically active, becomes formic acid by oxidizing and adversely affects heat resistance, and when used for parts of electric and electronic equipment, metal contact parts are corroded or organic compounds are not used. Discoloration due to adhesion causes contact failure.
- formaldehyde itself pollutes the working environment in the parts assembly process and the living environment around the use of the final product.
- antioxidants added to polyacetal resin phenolic compounds having hindered hindered (hindered phenols) and amided amides having steric hindrance (hindered amines) are known, and as other stabilizers, , Melamine, alkali metal hydroxides, alkaline earth metal hydroxides, and organic or inorganic acid salts are known. Usually, an antioxidant is used in combination with another stabilizer. However, even with the use of such additives, it is difficult to suppress formaldehyde generated from molded articles of polyacetal resin.
- Patent Document 1 discloses a composition containing a polyacetal copolymer and dicarboxylic acid dihydrazide (such as an aliphatic dicarboxylic acid dihydrazide having 3 to 10 carbon atoms, arylene dicarboxylic acid dihydrazide, etc.). Have been. However, when such a short-chain aliphatic carboxylic acid hydrazide is used, the thermal stability is improved to some extent, and the generation of formaldehyde can be suppressed. Leaching of the carboxylic hydrazide occurs. This document does not specifically disclose what arylenedicarboxylic acid dihydrazide is used to improve the thermal stability of the resin composition. Furthermore, use of monocyclic aromatic carboxylic acid hydrazides However, even if mold deposits and bleeding cannot be sufficiently suppressed.
- dicarboxylic acid dihydrazide such as an aliphatic dicarboxylic acid dihydrazide having 3 to 10 carbon atoms, arylene dicar
- Patent document 1 U.S. Pat.No. 3,152,101 (columns 1 and 3)
- an object of the present invention is to provide a resin composition capable of improving the thermal stability of a polyacetal resin, the melt stability during extrusion processing and molding processing, a method for producing the same, and a molded article. is there.
- Another object of the present invention is to provide a polyacetal resin composition, a production method thereof, and a molded article, which can significantly suppress the formation of formaldehyde by adding a small amount thereof and improve the working environment.
- Still another object of the present invention is to suppress the formation of formaldehyde even under severe conditions, to adhere decomposed substances to a mold, to exude decomposed substances from a molded product.
- An object of the present invention is to provide a polyacetal resin composition, a method for producing the same, and a molded product, which can suppress the thermal deterioration of the resin, improve the quality of the molded product, and improve the moldability.
- Another object of the present invention is to suppress the amount of formaldehyde generated from polyacetal resin and molded articles to an extremely low level, and to improve physical properties such as weather resistance (light), impact resistance, and slidability.
- An object of the present invention is to provide an improved polyacetal resin composition and a molded article. Means for solving the problem
- the present inventor has conducted intensive studies to achieve the above object, and as a result of conducting a series of search studies on a series of carboxylic acid hydrazide conjugates with respect to a polyacetal resin stabilizer, found that polycyclic aromatic carboxylic acid hydrazide was obtained.
- the present inventors have found that the compound has an effect of remarkably suppressing formaldehyde generated from a molded article of polyacetal resin, and that the bleeding from the molded article is significantly improved, thereby completing the present invention.
- the polyacetal resin composition of the present invention is composed of a polyacetal resin and hydrazonic acid hydrazide, and the carboxylic acid hydrazide has a substituent (such as a hydroxyl group).
- the carboxylic acid hydrazide is a polycyclic aromatic carboxylic acid hydrazide.
- the carboxylic acid hydrazide is represented by (0-condensed polycyclic aromatic carboxylic acid hydrazide, GO:
- Ar represents an aromatic hydrocarbon ring
- X represents a direct bond, an alkylene group, a (thio) ether group, a carbonyl group, a sulfoxide group, a sulfone group, or a divalent aromatic group.
- M represents an integer of 1 to 4
- n represents an integer of 0 to 4.
- the carboxylic acid hydrazide is represented by (0-condensed polycyclic C-arene monocarboxylic hydrazide, (ii) in the formula (1)
- X is a direct bond, a linear or branched C alkylene group, a (thio) ether group, or a carbonyl group
- the ratio of the carboxylic acid hydrazide may be about 0.001 to 20 parts by weight based on 100 parts by weight of the polyacetal resin.
- the polyacetal resin composition further comprises an antioxidant, a heat stabilizer, a processing stabilizer, a weather (light) stabilizer, an impact resistance improver, a slidability improver, a colorant and a filler. At least one selected type may be included.
- the antioxidant, the processing stabilizer, the heat resistance stabilizer, and the weather (light) stabilizer those substantially containing no ester bond in the molecule may be used.
- the resin composition of the present invention can also improve the heat stability without substantially containing a phosphorus-based flame retardant.
- the polycyclic aromatic carboxylic acid hydrazide is melt-mixed with a polyacetal resin and the polycyclic aromatic carboxylic acid hydrazide using an extruder. It also includes a method for producing a polyacetal resin composition in which the side feed force of an extruder is also fed and mixed, and a molded article formed of the polyacetal resin composition.
- the molded articles may be electrical, electronic parts (electric and Z or electronic parts), building materials, plumbing parts (building materials and Z or plumbing parts), living and cosmetic parts (living and Z or cosmetic parts), or medical It may be a part.
- polycyclic aromatic carboxylic acid hydrazide is added to the polyacetal resin, the thermal stability of the polyacetal resin and the melt stability during extrusion and molding can be improved. Also, the addition of a small amount of the carboxylic acid hydrazide can significantly suppress the formation of formaldehyde, and can greatly improve the surrounding environment (work environment, use environment, etc.). In addition, even under severe conditions, the amount of formaldehyde generated can be suppressed to an extremely low level, adhesion of decomposed products to molds (mold deposit), leaching of decomposed products from molded products and molding products.
- the resin composition of the present invention is composed of a polyacetal resin and a polycyclic aromatic carboxylic acid hydrazide.
- Polyacetal resin is a high-acetal resin containing oxymethylene groups (one OCH—) as the main structural unit.
- a molecular compound such as polyacetal homopolymer or polyoxymethylene (eg, manufactured by DuPont, USA, trade name “Delrin”; manufactured by Asahi Kasei Kogyo Co., Ltd., trade name “Tenac 4010”, etc.).
- polyacetal copolymers for example, trade name “Duracon” manufactured by Polyplastics Co., Ltd.
- the comonomer unit includes an oxyalkylene unit having about 2 to 6 carbon atoms (preferably about 2 to 4 carbon atoms) (for example, an oxyethylene group (one OCHCH one), an oxypropylene group).
- the content of the comonomer unit is small, for example, with respect to the entire polyacetal resin (monomer units constituting the polyacetal resin),
- the polyacetal copolymer may be a copolymer composed of two components, a terpolymer composed of three components, or the like.
- Examples of the polyacetanol copolymer include a random copolymer, a block copolymer (eg, a copolymer described in Japanese Patent Publication No.
- the polyacetal resin may have not only a linear structure but also a branched structure or a crosslinked structure.
- the terminal of the polyacetal resin may be stabilized by, for example, esterification with a carboxylic acid such as acetic acid or propionic acid or an anhydride thereof, urethanization with a isocyanate compound, or etherification.
- the degree of polymerization, the degree of branching and the degree of crosslinking of the polyacetal are not particularly limited as long as they can be melt-molded.
- the molecular weight of the polyacetal resin is not particularly limited, and is, for example, about 5,000 to 500,000, preferably about 10,000 to 400,000, weight average molecular weight.
- the polyacetal resin includes, for example, aldehydes such as formaldehyde, paraformaldehyde, and acetate aldehyde, trioxane, ethylene oxide, propylene oxide, butylene oxide, styrene oxide, cyclohexane oxide, and cyclohexene. It can be produced by polymerizing cyclic ethers and cyclic formals such as oxide, 1,3-dioxolan, 1,3 dioxane, diethylene glycol formal, and 1,4 butanediol formal.
- aldehydes such as formaldehyde, paraformaldehyde, and acetate aldehyde
- trioxane ethylene oxide
- propylene oxide butylene oxide
- styrene oxide cyclohexane oxide
- cyclohexene cyclohexene
- alkyl or arylidicidyl ether for example, methyldaricidyl ether, ethildaridyl ether, phenyldaricidyl ether, naphthyldaricidyl ether, etc.
- alkylene or polyoxyalkylene glycol diglycidyl ether Eg, ethylene glycol diglycidyl ether, triethylene glycol diglycidyl ether, butanediol diglycidyl ether, etc.
- alkyl or aryl glycidyl alcohol cyclic esters (eg, j8-propiolatatone, etc.) and vinyl conjugates (eg, styrene , Burye Tenoré)
- cyclic esters eg, j8-propiolatatone, etc.
- vinyl conjugates eg, styrene , Burye Tenoré
- a feature of the present invention is that by adding a polycyclic aromatic carboxylic acid hydrazide, the processing stability of a polyacetal resin is remarkably improved, and the generation of formaldehyde is remarkably suppressed.
- Polycyclic aromatic carboxylic acid hydrazide is a polycyclic aromatic monocarboxylic acid
- Polyhydric aromatic polycarboxylic acid mono- or polyhydrazide which may be monohydrazide (for example, dicarboxylic mono- or dihydrazide, tricarboxylic mono- to trihydrazide, etc.) may be used.
- the polycyclic aromatic carboxylic acid hydrazide may have a plurality of monocyclic aromatic hydrocarbons (such as a benzene ring) in a molecule.
- Such carboxylic acid hydrazides include, for example, condensed polycyclic aromatic carboxylic acid hydrazide, and polyaryl carboxylic acid hydrazide represented by the above formula (1).
- condensed polycyclic aromatic carboxylic acid hydrazide examples include, for example, condensed polycyclic aromatic monocarboxylic acid hydrazide (naphthalene carboxylic acid hydrazide such as ⁇ - or ⁇ -naphthalene carboxylic acid hydrazide, anthracene carboxylic acid) Hydrazide, phenanthrenecarboxylic acid hydrazide, etc.), condensed polycyclic aromatic polycarboxylic acid mono- or polyhydrazide [polycarboxylic acid mono- or polyhydrazide corresponding to the monocarboxylic acid monohydrazide, for example, naphthalenedicarboxylic acid mono- or dihydrazide , Naphthalenetetracarboxylic acid hydrazide (1,4,5,8-naphthalenetetracarboxylic acid mono to tetrahydrazide, etc.), anthracene dicarboxylic acid mono- or di
- naphthalene carboxylic acid hydrazide as an example, in naphthalene monocarboxylic acid monohydrazide, the substitution position of the hydrazino carboxy group is naphthalene It may be at either the 1- or 2-position of the ring, and in naphthalenedicarboxylic acid hydrazide, the 1- to 8-position power is selected at two places, for example, 1, 2-, 1, 3-, 1, 4-, 1, 5—, 1, 6—, 1, 7—, 1, 8—, 2, 3—, 2, 6—, 2, 7—positions, and the like.
- condensed polycyclic aromatic carboxylic acids condensed polycyclic aromatic carboxylic acids
- condensed polycyclic C arenes (mono- or poly-
- carboxylic acid hydrazide preferably fused polycyclic C-arene monocarboxylic hydrazide hydrazide
- Phthalenedicarboxylic acid hydrazide is preferred.
- the aromatic hydrocarbon ring represented by Ar is a C aromatic hydrocarbon ring such as a benzene ring or a naphthalene ring, preferably
- alkylene group represented by X a linear or branched C alkylene group such as methylene, ethylene, dimethylmethylene, propylene, trimethylene, and butylene, preferably a linear or branched C alkylene group
- Phenylene, naphthalenediyl and other C arylene groups preferably C arylene
- m may be preferably an integer of 1 to 3, and more preferably 1 or 2.
- n may preferably be an integer of 0-3, more preferably an integer of 0-2, especially 1 or 2.
- the substitution position of the hydrazinocarbonyl group is not particularly limited.
- ring Ar is a benzene ring, o—, m— Or any of the p-positions.
- the substitution position of the hydrazinocarbonyl group is not particularly limited, and for example, can be appropriately selected from the 2 to 5 positions of the benzene ring with respect to the group X at the 1 position of the benzene ring.
- Such polyarylcarboxylic acid hydrazides include monocarboxylic acid hydrazides, for example, bisaryl monocarboxylic acid hydrazides such as biphenyl 2-, 13-, or 14-monocarboxylic acid monohydrazide, and bisazolyl.
- the polyarylene carboxylic acid hydrazide includes a polycarboxylic acid hydrazide, for example, a polycarboxylic acid mono- or polyhydrazide corresponding to the monocarboxylic acid hydrazide [biphenyl-1,2-, , 5—, one, two, six, one, three, four, one, three, five, one, two, one, one, two, four, one, one, three, three Bisaryl dicarboxylate mono- or dihydrazide such as 3,4,1 or 4,4, dicarboxylic mono- or dihydrazide; bisaryl (thio) ether dicarboxylate hydrazide, bisaryl ketone corresponding to this bis-aryldicarboxylate mono- or dihydrazide Diarylcarboxylic acid hydrazide, bisarylsulfondicarboxylic acid hydrazide, and bisarylsulfidodicarboxylic acid hydrazide; bisary
- Is dihydrazide p-terphenyldicarboxylic acid mono- or dihydrazide and the like are also included.
- polyarylcarboxylic acid hydrazides in particular, biphenylcarboxylic acid hydrazide, biphenylmono or polycarboxylic acid hydrazide (2, 2, 1, or 4,4, -biphenyl) in which group X is a direct bond -Bidicarboxylic acid dihydrazide, etc.) and the like are preferable.
- the polycyclic aromatic carboxylic acid hydrazide has a substituent such as a hydroxyl group, an alkoxy group, an alkoxyl group, a carboxyl group, an amino group, an amide group, a nitrile group, and an alkyl group. Is also good.
- the number of substituents is not particularly limited, and may be about 110, preferably 116, more preferably 114 (for example, 113).
- the aromatic carboxylic acid has a plurality of substituents, the substituents may be the same or different.
- the substitution position of the substituent is not particularly limited. For example, in the case of a polyarylcarboxylic acid hydrazide, it may be on a constituent atom of the group X or the like, but is usually on a carbon atom constituting an aromatic ring. You may.
- oxycarboxylic acid hydrazide (Polycyclic aromatic oxycarboxylic acid hydrazide) is preferable because of high affinity with polyacetal resin.
- oxycarboxylic acid hydrazide may have the above-mentioned substituents in addition to the hydroxyl group.
- an oxycarboxylic acid hydrazide corresponding to the above-mentioned polycyclic aromatic carboxylic acid hydrazide for example, a condensed polycyclic aromatic carboxylic acid hydrazide [hydroxynaphthalene Carboxylic acid hydrazide (2 3 4 5 6 7-or 8 monohydroxy-1 naphthalene monocarboxylic acid monohydrazide, 1 3 4 5 6 7-or 8-hydroxy-2 naphthalene monocarboxylic acid monohydroxide Hydrazide), monocarboxylic acid monohydrazide such as hydroxyanthracene monocarboxylic acid monohydrazide, hydroxyphenanthrene monocarboxylic acid monohydrazide; polycarboxylic acid mono- or polyhydrazide (dicarboxylic acid) corresponding to these monocarboxylic acid monohydrazides; Polycyclic oxy C-arenes such as mono
- Bonic acid hydrazide preferably fused polycyclic oxy C arene monocarboxylic acid monohydric
- hydroxynaphthalene monocarboxylic acid monohydrazide such as 3-hydroxy-2-naphthalenecarboxylic acid hydrazide, 6-hydroxy-2-naphthalenecarboxylic acid hydrazide, etc.
- hydroxybiphenylcarboxylic acid in which the group X is a direct bond Preferred are hydrazide, hydroxybiphenylmono or polycarboxylic acid hydrazide (particularly, hydroxybiphenylcarboxylic acid hydrazide such as 4-hydroxybiphenyl-hydrazine hydrazide and the like).
- the polycyclic aromatic carboxylic acid hydrazide can be used alone or in combination of two or more.
- a condensed polycyclic C arene (mono or
- the proportion of the carboxylic acid hydrazide is, for example, 0.001 to 20 parts by weight, and preferably ⁇ 0.002 to 10 parts by weight (for example, 0.002 to 100 parts by weight) per 100 parts by weight of the polyacetal resin. 5 parts by weight), more preferably about 0.003 to 3 parts by weight, and even if it is about 0.005 to 2 parts by weight, the formation of formaldehyde can be remarkably suppressed. If the proportion of the carboxylic acid hydrazide is too small, it is difficult to effectively reduce the amount of formaldehyde generated, and if it is too large, moldability and mechanical strength may be reduced.
- the carboxylic acid hydrazide alone can impart remarkable stability and processing stability to the polyacetal resin even when used alone.
- Light may be used in combination with at least one selected from stabilizers, impact modifiers, slidability modifiers, coloring agents and fillers!
- the carboxylic acid hydrazide can stabilize the polyacetal resin even when used in combination with such a stabilizer having an ester bond.
- the carboxylic acid hydrazide potentially has reactivity to an ester bond, in order to obtain a formaldehyde suppressing effect with a smaller amount of the carboxylic acid hydrazide, the stabilizer must have an intramolecular bond within the molecule. It is preferable to use a compound which does not contain a tell bond as a structural unit.
- Antioxidants include hindered phenolic compounds and hindered amine compounds.
- hindered phenol compound a conventional phenol-based antioxidant or stabilizer, for example, a monocyclic hindered phenol compound (2,6-di-tert-butyl-p-talesol) ), A polycyclic hindered phenol compound linked by a hydrocarbon group or a group containing an iodine atom [2,2'-methylenebis (4-methyl-6t-butylphenol), 4,4'-methylenebis (2,6- C alkylenebis or tetrakis (t-butylphenol) such as di-t-butylphenol), 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane
- a conventional phenol-based antioxidant or stabilizer for example, a monocyclic hindered phenol compound (2,6-di-tert-butyl-p-talesol)
- a polycyclic hindered phenol compound linked by a hydrocarbon group or a group containing an iodine atom [2,2'
- T-alkylphenols having a oxy group for example, t-butylphenol and t-pentylphenol); hindered phenols having a phosphonate group such as di-n-octadecyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate Compound; N, N'-hexamethylenebis (3,5-di-tert-butyl-4-hydroxydihydrocinnamamide N, N, 1-Ethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionamide], N, N, 1-tetramethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) -Le) Propionamide], N, N, 1-hexamethylenebis [3- (3,5-dibutyltinole 4-hydroxyphenyl) propionamide], N, N, 1-ethylenebis [3- (3- t-butyl-5
- a phenol compound having a t-butyl (particularly, a plurality of t-butyl) groups (particularly, a compound having a plurality of t-butyl phenol sites) is preferable.
- These hindered phenol compounds can be used alone or in combination of two or more.
- hindered amine-based compound examples include piperidine derivatives having a sterically hindered group, for example, ester group-containing piperidine derivatives [4-acetoxy-2,2,6,6-tetramethylpiperidine, 4-stearoyloxy-2,2,2.
- Aliphatic acyloxypiperidines such as 6,6-tetramethylpiperidine, 4 atariloyloxy 2,2,6,6-tetramethylpiperidine (C aliphatic aliphaticoxy-tetramethylpiperidine, etc.); 4 Benzoyloxy 2, 2 , 6
- Cycloalkyloxypiberidi such as oxy 2,2,6,6-tetramethylpiperidine
- Phenyloxypiperidines such as 4 phenoxy 2,2,6,6-tetramethylpiperidine; Caryl carbons such as 4-benzyloxy 2,2,6,6-tetramethylpiperidine
- alkylenedioxybibispiperidine C alkylenedioxybispiperidine
- amide group-containing piperidine derivatives [4 (phenylcarbamoyloxy) —2,2,6,6-tetramethylpiperidine and other rubamoyloxypiperidines; bis (2,2,6 , 6-tetramethyl-4-piperidyl) hexamethylene 1,6-dicarbamate and other carbamoyloxy-substituted alkylenedioxy-bispiperidines].
- a high-molecular-weight piperidine derivative polycondensate (dimethyl succinate-11- (2-hydroxyethyl) -14-hydroxy-2,2,6,6-tetramethylpiperidine polycondensate, poly ⁇ 6 -— ((1 , 1,3,3-tetramethylbutyl) imino-1,3,5-triazine-2,4diyl] [2- (2,2,6,6-tetramethylpiperidyl) amino] hexamethylene [4— ( 2, 2, 6, 6-tetramethylpiperidyl) imino] ⁇ ).
- These hindered amine compounds can be used alone or in combination of two or more.
- antioxidants can be used alone or in combination of two or more.
- the ratio of the antioxidant is about 0.001 to 5 parts by weight, preferably about 0.005 to 3 parts by weight, more preferably about 0.01 to 2 parts by weight, based on 100 parts by weight of the polyacetal resin. There may be.
- processing stabilizer examples include at least one selected from the group consisting of (a) a long-chain fatty acid or a derivative thereof, (b) a polyoxyalkylene daricol, and (c) a silicone conjugate.
- the long chain fatty acid may be a saturated fatty acid or an unsaturated fatty acid. Further, those in which a part of hydrogen atoms are substituted with a substituent such as a hydroxyl group can also be used. like this Suitable long-chain fatty acids include mono- or divalent fatty acids having 10 or more carbon atoms, for example, monovalent saturated fatty acids having 10 or more carbon atoms (potassic acid, lauric acid, myristic acid, pentadecyl acid, palmitic acid, C-saturated fatty acids such as stearic, arachinic, behenic, and montanic acids
- Acid linoleic acid, linolenic acid, arachidonic acid, eric acid, etc.
- fatty acids preferably divalent C saturated fatty acids
- divalent such as decenedioic acid, dodecenedioic acid
- Unsaturated fatty acids preferably divalent C unsaturated fatty acids, etc.
- the fatty acids also include fatty acids having one or more hydroxyl groups in the molecule (eg, hydroxy-saturated C fatty acids such as 12-hydroxystearic acid).
- Fatty acids can be used alone or in combination of two or more.
- Derivatives of long-chain fatty acids include fatty acid esters and fatty acid amides.
- the structure of the fatty acid ester is not particularly limited, and a straight or branched fatty acid ester may be used.
- the ester of the long-chain fatty acid with an alcohol may be used. And the like having one or more ester bonds.
- the alcohol constituting the long-chain fatty acid ester is not particularly limited and may be a monohydric alcohol, but usually a polyhydric alcohol is often used.
- polyhydric alcohol examples include polyhydric alcohols having about 2 to 8 carbon atoms, preferably about 2 to 6 carbon atoms, or polymers thereof, for example, alkylene glycols such as ethylene glycol, ethylene glycol, and propylene glycol.
- alkylene glycol such as ethylene glycol, ethylene glycol, and propylene glycol.
- C alkylene glycol preferably C
- Diols such as alkylene glycol); glycerin, trimethylolpropane
- triols such as derivatives thereof; tetraols such as pentaerythritol, sorbitan or derivatives thereof; and homo- or copolymers of these polyhydric alcohols (for example, alkylene glycols such as polyethylene glycol and polypropylene glycol). And polyglycerol, dipentaerythritol, polypentaerythritol, etc.).
- the average degree of polymerization of the polyoxyalkylene glycol is
- the average polymerization degree is 2 or more (for example, about 2 to 500), preferably about 2 to 400 (for example, about 2 to 360), and more preferably 16 or more (for example, about 20 to 200).
- the long-chain fatty acid constituting the ester may be a fatty acid having 12 or more carbon atoms, for example, a monovalent C-saturated or unsaturated fatty acid.
- Coal can also be used alone or in combination of two or more.
- Examples of such a long-chain fatty acid ester include ethylene glycol mono- or dipalmitate, ethylene glycol mono- or distearate, ethylene glycol mono- or dibehenate, ethylene glycol mono- or dimontanate.
- the fatty acid amide includes an acid amide (monoamide, bisamide, etc.) of the long-chain fatty acid (monovalent or divalent long-chain fatty acid) and an amine (monoamine, diamine, polyamine, etc.). ) Can be used.
- acid amides monoamide, bisamide, etc.
- bisamides are particularly preferred.
- the monoamide includes, for example, primary fatty acid amides such as potassium phosphamide, lauric amide, myristic amide, palmitic amide, stearic amide, araquinamide, behenamide, and montanamide.
- primary fatty acid amides such as potassium phosphamide, lauric amide, myristic amide, palmitic amide, stearic amide, araquinamide, behenamide, and montanamide.
- unsaturated fatty acids such as tertiary acid amide and oleic acid amide such as primary acid amide, stearyl stearamide and stearyl oleamide
- Secondary acid amides of Z or unsaturated fatty acid and monoamine can be exemplified.
- Bisamides include C alkylene diamine (particularly, C alkylene diamine) and the above-mentioned fatty acid.
- Examples thereof include ethylenediamine dipalmitic acid amide, ethylenediamine distearic acid amide (ethylenebisstearylamide), hexamethylenediamine distearic acid amide, ethylenediamine dibehenic acid amide, and the like.
- the fatty acid constituting the acid amide is preferably a saturated fatty acid.
- long-chain fatty acids or derivatives thereof can be used alone or in combination of two or more.
- Polyoxyalkylene glycols include alkylene glycols [eg, C alkylene glycols such as ethylene glycol, propylene glycol, and tetramethylene glycol].
- alkylene glycols eg, C alkylene glycols such as ethylene glycol, propylene glycol, and tetramethylene glycol.
- alkylene glycol Preferably alkylene glycol or the like, or derivatives thereof.
- polyoxyalkylene glycols include polyoxyalkylene glycols such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol.
- polyoxyalkylene glycol Preferably polyoxyalkylene glycol
- Copolymers such as a propylene copolymer (such as a random or block copolymer), a polyoxyethylenepolyoxypropylene glyceryl ether, and a polyoxyethylenepolyoxypropylene monobutyl ether are exemplified.
- a propylene copolymer such as a random or block copolymer
- a polyoxyethylenepolyoxypropylene glyceryl ether such as a random or block copolymer
- a polyoxyethylenepolyoxypropylene monobutyl ether such as polyethylene glycol, polyoxyethylene-polyoxypropylene copolymers and derivatives thereof.
- the number average molecular weight of the polyoxyalkylene glycol is 3 ⁇ 10 2 —1 ⁇ 10 6 (for example, 5
- X 10 2 - 5 X 10 5 preferably 1 X 10 3 - a 5 X 10 4) about - 1 X 10 5 (e.g., 1 X 10 3.
- Polyoxyalkylene glycol can be used alone or in combination of two or more. Wear.
- Silicone compounds include (poly) organosiloxanes and the like.
- Examples of the (poly) organosiloxane include monoorganosiloxanes such as dialkylsiloxanes (eg, dimethylsiloxane), alkylarylsiloxanes (eg, methylmethylsiloxane), and diarylsiloxanes (eg, diphenylsiloxane). And homopolymers thereof (for example, polydimethylsiloxane, polyphenylmethylsiloxane, etc.) and copolymers. Note that the polyorganosiloxane may be an oligomer.
- (poly) organosiloxane has an epoxy group, a hydroxyl group, an alkoxy group, a carboxyl group, an amino group or a substituted amino group (such as a dialkylamino group), an ether group, Modified (poly) organosiloxane (for example, modified silicone) having a group or a substituent such as a (meth) atalyloyl group is also included.
- These silicone compounds can be used alone or in combination of two or more.
- the ratio of the processing stabilizer is, for example, 0.1% by weight based on 100 parts by weight of the polyacetal resin.
- the heat stabilizer includes (a) a basic nitrogen compound, (b) a metal salt of an organic carboxylic acid, (c) an alkali or alkaline earth metal compound, (d) talcite at a hydrid, (e) zeolite, and D phosphine compounds and the like are included.
- Examples of the basic nitrogen compound include aminotriazine conjugates, guadin conjugates, urea compounds, amino acid conjugates, amino alcohol compounds, imido conjugates, amide compounds and hydrazine conjugates. At least one selected can be used.
- the aminotriazine conjugate includes melamine or a derivative thereof [melamine, melamine condensate (eg, melam, melem, melon)], guanamine or a derivative thereof, and an aminotriazine resin [a co-condensed resin of melamine ( Melamine formaldehyde fat, phenol-melamine fat, melamine leaf Enol-formaldehyde resin, benzoguanamine melamine resin, aromatic polyamine melamine resin, etc., and co-condensation resin of guanamine (benzoguanamine formaldehyde resin, benzoguanamine phenol-formaldehyde resin, etc.).
- guanamine derivatives include aliphatic guanamine compounds [monoguanamines (such as valamine guanamine, caproganamin, heptanoguanamine, capriguchi guanamine, C guanolequinole-substituted guanamine, and the like).
- monoguanamines such as valamine guanamine, caproganamin, heptanoguanamine, capriguchi guanamine, C guanolequinole-substituted guanamine, and the like.
- Bisguanamines succinoguanamine, glutaloganamine, adipoguanamine, pimelog anamin, subroganamin, azeroguanamine, sebacoguanamine, etc.
- N-bisguanamine 1, 12-bisguanamine
- alicyclic guanamine-based compounds alicyclic guanamine-based compounds [monoguanamines (cyclohexanecarboguanamine, norbornenecarboguanamine, cyclohexenecarboguanamine, norbornanecarboguanamine and functional group-substituted products thereof) (Functional groups such as alkyl group, hydroxy group, amino group, acetoamino group, nitrile group, carboxyl group, alkoxycarbol group, rubamoyl group, alkoxy group, phenol group, tamyl group, hydroxyphenyl group, etc.
- aromatic guanamine-based compounds (monoguanamines (benzoguanamine and its functional group-substituted (alkyl, aryl, hydroxyl, amino) , Acetoamino group, nitrile group, carboxyl group, alkoxycarbol Derivatives in which 115 functional groups such as carbamoyl, alkoxy, phenol, cumyl, and hydroxyphenyl are substituted with benzoguanamine phenyl residues: for example, o--, m--, or p-toldaanamin, o-, m- or p-xyloguanamine, o-, m- or p-phenylbenzoguanamine, o-, m- or p-hydroxybenzoguanamine, 4- (4-hydroxyphenyl) benzoguanamine , O-, m- or p-trinobenzoguanamine, 3,5-dimethyl-4-hydroxybenzoguanamine
- the melamine, melamine derivative, and guanamine-based compound in which the alkoxymethyl group of the guanamine-based compound is substituted with an amino group for example, mono to hexamethoxymethyl melamine, mono to tetramethoxymethyl benzoguanamine, mono to otatamethoxy] Methyl CTU—guanamine, etc.].
- the guadinine conjugates include, for example, acyclic guanidines (glycosamine, guanoline, guanidine, cyanoguanidine, etc.), cyclic guanidines (glycocyanidins such as glycosiamidine, creatinine, etc .; oxalyl guadin) Oxaryl guanidines such as 2,4-diiminoparabanic acid or cyclic guanines similar to the structure thereof); imino group-substituted perazole conjugates (such as iminourazole and guanazine); isocyanuric imides ( Isoammelide, isoammeline, etc.); maloninoleguanidine, tanoretro dinoleguanidine, mesoxalinoleganidine and the like.
- acyclic guanidines glycosiamidine, creatinine, etc .
- Oxaryl guanidines such
- urea compound examples include a non-cyclic urea compound [N-substituted urea substituted with a substituent such as urea and an alkyl group, a non-cyclic urea condensate (multimer of urea such as piuret and piurea; methylene Condensates of urea such as diurea, form nitrogen, etc. with aldehyde conjugates, oligo- or poly-C-norolecylene urea (oligo or polynonamethylene urea, etc.), cyclic urea
- Urea Urea
- arylene urea urea
- ureide of dicarboxylic acid parabanic acid, barbituric acid, isocyanuric acid, peramyl, etc.
- ureide of j8-aldehyde acid peracid, thymine, perazole, etc.
- ⁇ -oxy acid Ureido hydantoins, for example, hydantoin; 5-methyl-hydantoin and the like, 5-linear or branched C alkyl-hydantoin; -Hyldantoin, 5- (o-, m-, or p-hydroxyphenyl) hydantoin, 5- (o-, m-, or p-aminophenol) hydantoin, etc. May have a substituent such as 5-C arylhydantoin; 5-benzylhydantoin
- Cyclic diureides such as uric acid, alkyl-substituted uric acid, acetylene urea (glycol peryl) or derivatives thereof (mono to tetra (C alkoxy C alkyl) glycol peryl, etc.); , Clotilidene diurea, ⁇ -oxy
- Acid diureido (1,1, -methylenebis (5,5-dimethylhydantoin), etc.), ⁇ -perazine and other diureas, and dicarboxylic acid diureide (aloxanthin, purpuric acid, etc.).
- amino acids examples include ⁇ -amino acids [monoaminomonocarboxylic acids (glycine, alanine, valine, norparin, leucine, norleucine, isoleucine, fenylalanine, tyrosine, jodotyrosine, sulinamine, threonine, serine, proline, hydroxyproline, tryptophan).
- monoaminomonocarboxylic acids glycine, alanine, valine, norparin, leucine, norleucine, isoleucine, fenylalanine, tyrosine, jodotyrosine, sulinamine, threonine, serine, proline, hydroxyproline, tryptophan.
- Roshinkomeron acid such as y amino acids (y Amino acid), such as [delta] amino ([delta] amino- ⁇ - valeric acid), and others.
- Amino acids may be in D-form, L-integral form or DL form. Includes amide (methyl ester, ethyl ester, etc.) amino acid derivatives.
- Amino alcohol compounds include monoethanolamine, diethanolamine, 2-amino-1-butanol, 2-amino-2-methyl-1 propanol, 2-amino-2-methyl-1,3-propanol, 2-amino- Examples thereof include amino C aliphatic mono- or polyols such as 2-ethyl-1,3-propanediol and tris (hydroxymethyl) aminomethane.
- aromatic polycarboxylic imides such as phthalic imide, trimellitic imide, and pyromellitic imide can be used.
- the amido conjugate includes aliphatic carboxylic acid amides (malonamide, adipic amide, sebacic amide, dodecanedioic acid amide, etc.), cyclic carboxylic acid amides (such as ⁇ -force prolatatam, etc.), and aromatic compounds.
- Aromatic carboxylic acid amides (benzoic acid amide, ⁇ -, m- or ⁇ -aminobenzamide, isophthalic acid diamide, terephthalic acid amide, etc.), polyamide-based resin [for example, nylon 3 (poly j8-alanine), nylon 46, Nylon 6, Nylon 66, Nylon 11, Nylon 12, Nylon MXD6, Nylon 6—10, Nylon 6—11, Nylon 6—12, Nylon 6—66—610, Nylon 9T etc.], Polyester amide, Polyamide imide , Polyurethane, poly (meth) acrylic acid amide homopolymer or copolymer which may be a crosslinked product [Polymerization described in US Pat.
- poly (vinyl lactam) homo- and copolymers [poly (N-vinylpyrrolidone) homo- and copolymers and the like] (for example, described in JP-A-55-52338, US Pat. No. 3,204,014).
- Homo- or copolymers poly (N-vinylcarboxylic acid amide), and copolymers of N-vinylcarboxylic acid amide with other vinyl monomers (for example, JP-A-2001-247745 and JP-A-2001-247745).
- JP-A-2001-247745 and JP-A-2001-247745 for example, JP-A-2001-247745 and JP-A-2001-247745.
- JP-A-8-311302 JP-A-59-86614
- U.S. Pat. No. 5,455,042, U.S. Pat. No. 5,407,996, and U.S. Pat. Coalescence ).
- the hydrazine conjugate includes a carboxylic acid hydrazide different from the polycyclic aromatic carboxylic acid hydrazide, for example, fatty acid hydrazide (lauric hydrazide, stearic hydrazide, adipic dihydrazide, sebacic dihydrazide, dodecane dihydrazide). And monocyclic aromatic carboxylic acid hydrazides (such as benzoic acid hydrazide, phthalic acid dihydrazide, isophthalic acid dihydrazide, terephthalic acid dihydrazide, p-hydroxybenzoic acid hydrazide, and salicylic acid hydrazide).
- fatty acid hydrazide lauric hydrazide, stearic hydrazide, adipic dihydrazide, sebacic dihydrazide, dodecane dihydrazide.
- (B) Organic Carboxylic Acid Metal Salt examples include salts of an organic carboxylic acid and a metal (an alkali metal such as Li, Na, and K; an alkaline earth metal such as Mg and Ca; and a transition metal such as Zn).
- a metal an alkali metal such as Li, Na, and K; an alkaline earth metal such as Mg and Ca; and a transition metal such as Zn).
- the organic carboxylic acid may be a long-chain saturated or unsaturated aliphatic carboxylic acid exemplified in the section of the long-chain fatty acid, which may be either a low molecular weight or a high molecular weight. Lesser lower saturated or unsaturated aliphatic carboxylic acids, polymers of unsaturated aliphatic carboxylic acids and the like can also be used. Further, these aliphatic carboxylic acids may have a hydroxyl group. As the lower saturated aliphatic carboxylic acid, a saturated C monocarboxylic acid (acetic acid,
- Acids pimelic acid, cornic acid, azelaic acid, etc., and their oxy acids (glycolic acid, lactic acid, glyceric acid, hydroxybutyric acid, citric acid, etc.).
- Acids, etc. and their oxy acids (such as propiolic acid).
- Examples of the polymer of the unsaturated aliphatic carboxylic acid include a polymerizable unsaturated carboxylic acid [a, an ethylenically unsaturated carboxylic acid, for example, a polymerizable unsaturated monocarboxylic acid such as (meth) acrylic acid, and the like.
- Polymerizable unsaturated polycarboxylic acids such as itaconic acid, maleic acid and fumaric acid
- acid anhydrides or monoesters of the above-mentioned polycarboxylic acids such as mono-C alkyl esters such as monoethyl maleate
- olefins ethylene A C, such as propylene
- the organic metal carboxylate is an alkali metal organic carboxylate (such as lithium tenate, potassium citrate, sodium citrate, lithium stearate, or lithium 12-hydroxystearate), or an alkaline earth metal.
- Metal organic carboxylate magnesium acetate, acetate acetate, magnesium citrate, calcium citrate, calcium stearate, magnesium stearate, 12-hydroxymagnesium stearate, 12-hydroxystearate Calcium phosphate, etc.
- ionomer resin where at least a part of the carboxyl groups contained in the copolymer of the polymerizable unsaturated polycarboxylic acid and the olefin is neutralized by the metal ion). Fat).
- the ionomer resin is commercially available as, for example, ACLYN (manufactured by Arlide's Signal), Himilan (manufactured by Mitsui Dupont Polychemicals), Surlyn (manufactured by Dupont).
- alkaline earth metal salts such as calcium citrate, magnesium stearate, calcium stearate, magnesium 12-hydroxystearate and calcium 12-hydroxystearate are preferred in terms of stabilizing effect.
- calcium citrate is preferable.
- Alkali or alkaline earth metal compounds include metal oxides such as CaO and MgO, metal hydroxides such as LiOH, Ca (OH) and Mg (OH), and metal inorganic acid salts (LiCO, NaCO ,
- Metal carbonates such as KCO, CaCO, and MgCO; inorganic acid salts such as borate and phosphate
- metal oxides and metal hydroxides are particularly preferred.
- an alkaline earth metal compound is preferable.
- alkali or alkaline earth metal compounds can be used alone or in combination of two or more.
- talcites in the mouth and the mouth examples include talcites in the mouth and the mouth described in JP-A-60-1241 and JP-A-9-59475. Saito daggers and the like can be used.
- M 2+ is Mg 2+, Mn 2+, Fe 2+ , a divalent metal ion such as Co 2+, M 3+ is Al 3+, Fe 3 +, 3 such as Cr 3+ Indicate valent metal ions, where A n — is an 11-valent (such as CO 2 —, OH—, HPO 2 —, SO 2 )
- hide mouth talcites can be used alone or in combination of two or more.
- Hydrate talcite includes “DHT-4A”, “DHT-4A-2”, “Almizer”, etc. Available as Kyowa Chemical Industry Co., Ltd.
- zeolite examples include, but are not particularly limited to, zeolite other than the H-type, for example, a zeolite described in JP-A-7-62142 [the minimum unit cell of which is an alkali and a crystalline aluminosilicate of Z or alkaline earth metal.
- zeolite described in JP-A-7-62142 [the minimum unit cell of which is an alkali and a crystalline aluminosilicate of Z or alkaline earth metal.
- zeolites can be used alone or in combination of two or more.
- A-type zeolite is available in the form of "zeolam series (A-3, A-4, A-5)", “Zoster series (KA-100P, NA-100P, CA-100P)” and the like.
- X-type zeolites are available as “Zeolam Series (F-9)” and “Zeostar Series (NX-100P)”, and Y-type zeolites are “HSZ Series (320NAA)” etc. Available from Chemical Industry Co., Ltd.
- phosphine compound examples include alkyl phosphines (for example, tri-C alkyl phosphine such as triethyl phosphine, propyl phosphine, and tributyl phosphine), and cycloalkyl phosphine.
- alkyl phosphines for example, tri-C alkyl phosphine such as triethyl phosphine, propyl phosphine, and tributyl phosphine
- cycloalkyl phosphine examples include alkyl phosphines (for example, tri-C alkyl phosphine such as triethyl phosphine, propyl phosphine, and tributyl phosphine), and cycloalkyl phosphine.
- Kilphosphine for example, tri C cycloalkyl phos such as tricyclohexylphosphine
- Phosphine etc.
- arylphosphine eg, triphenylphosphine, p-tolyldiphenylphosphine, di-p-tolylphenylphosphine, tree m-aminophenylphosphine, tri (2,4-dimethylphenyl) phosphine, triphenylphosphine Amino group such as (2,4,6-trimethylphenyl) phosphine, tri (o-, m- or p-tolyl) phosphine, etc.
- Substituent such as C alkyl group
- aralkyl phosphine for example, tri (o
- Tri- (phosphoryl) phosphines such as m- or p-silylphosphine
- Mono- or di-C arylalkyl or mono-C-alkyl phosphine eg, diphenyl phosphine, aryl diphenyl phosphine, etc.
- Aralkyl phosphine e.g., p-sirdiphenylphosphine
- C-Fe such as methylphenyl-p-sil-phosphine C aryl (C aryl C alkyl) which may have a substituent such as
- Phosphine, etc. Phosphine, etc.
- bisphosphines W such as 1,4-bis (diphenylphosphine) butane and other bis (diarylphosphino) Calkane] phosphine compounds.
- phosphine compounds can be used alone or in combination of two or more.
- heat stabilizers can be used alone or in combination of two or more.
- a combination of a basic nitrogen-containing compound and at least one selected from the group consisting of metal salts of organic carboxylic acids, alkali or alkaline earth metal compounds, talc, talcite, zeolite, and phosphine disulfide When used, heat resistance can be imparted with a smaller amount.
- the resin composition of the present invention tends to improve heat stability even without substantially containing a phosphorus-based flame retardant.
- the ratio of the heat-resistant stabilizer is, for example, 0.001 to 10 parts by weight, preferably 0.001 to 5 parts by weight based on 100 parts by weight of the polyacetal resin.
- a range force of about parts by weight (particularly 0.01-2 parts by weight) can be selected.
- hydrazine compounds fatty acid hydrazide and monocyclic aromatic carboxylic acid hydrazide
- the ratio of the hydrazine-distilled product is usually 1 part by weight or less (for example, about 0 to 1 part by weight), preferably 0.001 to 1 part by weight, more preferably 100 parts by weight of the polyacetal resin. Preferably, it may be about 0.005 to 0.8 parts by weight (for example, 0.005 to 0.08 parts by weight).
- weather (light) stabilizer examples include (a) a benzotriazole compound, (b) a benzophenone compound, (c) an aromatic benzoate compound, (d) a cyanoacrylate compound, and (e) Acid-based compounds, (1) hydroxyaryl 1,3,5-triazine-based compounds and (g) hindered amine-based compounds.
- Benzotriazole-based compounds include 2- (2'-hydroxy-5'methylphenyl) benzotriazole and 2- (2'-hydroxy-3 ', 5'-di (t-butyl) phenyl) benzotriazole Azole, 2- (2'-hydroxy-3 ', 5'-di (t-amyl) phenyl) benzotriazole, 2- (2'-hydroxy-3', 5'-diisoamylphenyl) benzotriazole Benzotriazoles having an aryl group substituted with a hydroxy group and a C alkyl group
- hydroxyl groups such as 2- [2'-hydroxy-3 ', 5'bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl] benzotriazole and aryl groups substituted with aralkyl (or aryl) groups Having a benzotriazole substituted with a hydroxyl group and an alkoxy (C alkoxy) group such as 2- (2'-hydroxy-4 'otatoxyl) benzotriazole
- Benzotriazoles having a phenyl group are preferred.
- benzophenone-based compound examples include benzophenones having a plurality of hydroxyl groups (di to tetrahydroxybenzophenones such as 2,4-dihydroxybenzophenone; hydroxyl groups such as 2-hydropenoxy-4oxybenzylbenzophenone; And benzophenones having a hydroxyl-substituted aryl or aralkyl group, etc.); benzophenones having a hydroxyl group and an alkoxy (C alkoxy) group (eg, 2-hydroxy-4-methoxybenzene).
- benzophenones having a plurality of hydroxyl groups di to tetrahydroxybenzophenones such as 2,4-dihydroxybenzophenone; hydroxyl groups such as 2-hydropenoxy-4oxybenzylbenzophenone; And benzophenones having a hydroxyl-substituted aryl or aralkyl group, etc.
- Nzophenone 2-hydroxy-4-otatooxybenzophenone, 2-hydroxy-4-dodecyl xybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophene
- 2-hydroxy-4-methoxy-5-sulfobenzophenone and the like.
- benzophenones having a hydroxyl group-substituted C aryl (or C aryl C alkyl) group together with a hydroxyl group, especially
- Nons are preferred.
- aromatic benzoate compounds p-t butylphenol salicylate, p-ota Alkyl aryl salicylates such as tyl phenol salicylate (especially alkyl phenol salicylate).
- cyanoacrylate compounds examples include 2-ethylhexyl 2-cyano-3,3-diphenyl acrylate and cyanyl-containing diaryl acrylates such as ethyl-2 cyano-3,3-diphenyl acrylate. (Particularly diphenyl atalylate containing a cyano group) and the like.
- oxalic acid-based compounds examples include N- (2-ethylfuryl) N '-(2-ethoxy
- N- (2-ethylphenyl) N '(2-ethoxyphenyl) oxalic acid diamide, etc. may be substituted on a nitrogen atom to form an aryl group (phenyl group). And the like.
- Hydroxyaryl 1,3,5-triazine compounds include 2,4-dicarboxylic 6
- 2,4-diphenyl 6- (2-hydroxy-4-benzyloxyphenyl) -1,3,5-triazine, 2,4-di ( ⁇ -tolyl or 2,4,4-dimethylphenyl) -6 — (2-Hydroxy-4-benzyloxyphenyl) — 1,3-, 5-Hydroxyaralkyloxyaryltriazine such as triazine; 2,4-diphenyl-6- (2-hydroxy-4— ( 2-butoxyethoxy) phenyl) -1
- 3,5-triazine, 2,4-di ⁇ -tolyl 6- (2-hydroxy-4- (2-hexyloxyethoxy) phenyl)-hydroxyalkoxyalkoxyaryl triazines such as 1,3,5-triazine And the like.
- hydroxyphenyl-1,3,5-triazine compounds are preferred.
- the hindered amine compound As the hindered amine compound, the hinderdamine compound exemplified in the section of the anti-oxidation agent can be used.
- weather (light) stabilizers may be used alone or in combination of two or more of the same or different weather (light) stabilizers.
- a combination of (g) a hindered amine compound and another weather (light) stabilizer is preferable to use a combination of (g) a hindered amine compound and another weather (light) stabilizer.
- the proportion of the weather (light) stabilizer is, for example, 0 to 5 parts by weight (for example, 0.01 to 5 parts by weight), preferably 0.1 to 4 parts by weight based on 100 parts by weight of the polyacetal resin. Parts, more preferably about 0.1 to 12 parts by weight.
- Various dyes or pigments can be used as the colorant.
- the dye include azo dyes, anthraquinone dyes, phthalocyanine dyes, and naphthoquinone dyes, which are preferably solvent dyes.
- azo dyes anthraquinone dyes
- phthalocyanine dyes phthalocyanine dyes
- naphthoquinone dyes which are preferably solvent dyes.
- pigments both inorganic and organic pigments can be used.
- examples of the inorganic pigments include titanium pigments, zinc pigments, carbon black (such as furnace black, channel black, acetylene black, and Ketjen black), iron pigments, molybdenum pigments, cadmium pigments, and lead pigments.
- examples include pigments, cobalt pigments, and aluminum pigments.
- organic pigment examples include azo pigments, anthraquinone pigments, phthalocyanine pigments, quinatalidone pigments, perylene pigments, perinone pigments, isoindoline pigments, dioxazine pigments, and sullen pigments. Can be exemplified.
- the coloring agents as described above may be used alone or in combination of a plurality of coloring agents. If a colorant with a high light-shielding effect (carbon black, titanium white (titanium oxide), phthalocyanine pigment, perylene pigment (particularly carbon black, perylene black pigment), etc.) is used, the weather (light) resistance Can be improved.
- a colorant with a high light-shielding effect carbon black, titanium white (titanium oxide), phthalocyanine pigment, perylene pigment (particularly carbon black, perylene black pigment), etc.
- the content of the colorant is, for example, 0 to 5 parts by weight (for example, 0.01 to 5 parts by weight), preferably 0.1 to 4 parts by weight, and more preferably 100 to 100 parts by weight of the polyacetal resin.
- 0.1 to 5 parts by weight for example, 0.01 to 5 parts by weight
- 0.1 to 4 parts by weight and more preferably 100 to 100 parts by weight of the polyacetal resin.
- 0.1 to 4 parts by weight Preferably 0.1
- the polyacetal resin composition of the present invention may contain, if necessary, a conventional additive, for example, an antioxidant (such as a phosphorus-based, iodo-based, hydroquinone-based, or quinoline-based antioxidant).
- a conventional additive for example, an antioxidant (such as a phosphorus-based, iodo-based, hydroquinone-based, or quinoline-based antioxidant).
- Carboxylic acid such as carboxylic acid described in JP-A-2000-239484
- impact modifier [acrylic core-shell polymer, polyurethane resin, polyester resin, etc.]
- slidability modifier [olefin type] Polymer, silicone resin, fluorine resin, etc.] release agent, nucleating agent, antistatic agent, flame retardant, foaming agent, surfactant, antibacterial agent, antifungal agent, fragrance, fragrance, various polymers
- Acrylic resin (C alkyl (meth) acrylate such as polymethyl methacrylate
- a conventional fibrous material may be used.
- Plate-like or powder-like fillers may be used alone or in combination of two or more.
- the fibrous filler include inorganic fibers (such as glass fibers, carbon fibers, boron fibers, and titanate-based lithium fibers (whiskers)) and organic fibers (such as amide fibers).
- the plate-like filler include glass flake, my strength, graphite, and various metal foils.
- Powdered fillers include metal oxides (zinc oxide, alumina, etc.), sulfates (calcium sulfate, magnesium sulfate, etc.), carbonates (calcium carbonate, etc.), glasses (milled fiber, glass beads, glass balloons, etc.) ), Silicates (talc, kaolin, silica, diatomaceous earth, clay, wollastonite, etc.), sulfides (such as molybdenum disulfide, tungsten disulfide, etc.), and carbides (fluorinated graphite, silicon carbide, etc.) , Boron nitride and the like.
- metal oxides zinc oxide, alumina, etc.
- sulfates calcium sulfate, magnesium sulfate, etc.
- carbonates calcium carbonate, etc.
- glasses milled fiber, glass beads, glass balloons, etc.
- Silicates talc, kaolin, silica, diatomace
- the polyacetal resin composition of the present invention comprises a polyacetal resin, which may be a powder mixture or a melt mixture, a polycyclic aromatic carboxylic acid hydrazide, and if necessary, other additives [stabilizer (antioxidant) , Processing stabilizers, heat stabilizers, weather (light) stabilizers), impact modifiers, slidability improvers, coloring agents and Z or fillers] in a conventional manner.
- additives antioxidant (antioxidant) , Processing stabilizers, heat stabilizers, weather (light) stabilizers), impact modifiers, slidability improvers, coloring agents and Z or fillers
- stabilizer antioxidant
- Processing stabilizers heat stabilizers
- impact modifiers e.g., impact modifiers
- slidability improvers e.g., coloring agents and Z or fillers
- a component (polyacetal resin, the other additives, etc.) containing no formula aromatic carboxylic acid hydrazide is supplied from the main feed port, and at least a component containing the polycyclic aromatic carboxylic acid hydrazide (other component, polyacetal. Fats, other additives, etc.) by side feed, kneading and extruding with an extruder to prepare pellets, and then shaping.
- the molding method is as follows: (4)-pellets (master batch) having different compositions are prepared, and the pellets are mixed (diluted) in a predetermined amount and subjected to molding to obtain a molded article having a predetermined composition. Method, (5) polyacetal resin pellets into the polycyclic aromatic carboxylic acid After the acid hydrazide is coexisted or adhered by spraying, coating (surface coating, etc.) or the like, molding is performed to obtain a molded product having a predetermined composition.
- the above methods (1), (2) and (3) are preferred, and particularly, melt mixing by a single-screw or twin-screw extruder having one or more devolatilization vent ports. Is preferred.
- side feed of carboxylic acid hydrazide is possible from either the feed port before or after the devolatilization vent port.
- water and processing aids such as Z or alcohols (methanol, ethanol, isopropyl alcohol, n-propyl alcohol, etc.) are injected from the feed port before the pre-blend or devolatilization vent port, and deaerated.
- the ratio of water, Z or alcohols as the processing aid is not particularly limited, and a force in the range of 0 to 20 parts by weight, based on 100 parts by weight of the polyacetal resin, can be usually selected, preferably 0.01 to 0.1 parts by weight. It may be about 10 parts by weight, more preferably about 0.1 to 5 parts by weight.
- the powder of the polyacetal resin serving as the base material for example, a powder obtained by pulverizing part or all of the polyacetal resin
- other components when the polycyclic aromatic carboxylic acid hydrazide and other additives (stabilizer, impact modifier, slidability modifier, coloring agent, Z or filler, etc.) are mixed and melt-kneaded, This is advantageous for improving the dispersion of the substance.
- the polyacetal resin composition of the present invention can remarkably suppress the formation of formaldehyde due to oxidation or thermal decomposition of the polyacetal resin, particularly in the molding (particularly, melt molding) step, The environment can be improved.
- the adhesion of decomposed products and additives to the mold (mold deposit) and the leaching of decomposed products and additives of the molded product can be significantly suppressed, and problems during molding can be improved.
- the present invention also includes a molded article formed from the resin composition.
- the molded article contains a combination of a polyacetal resin and a polycyclic aromatic carboxylic acid hydrazide, is excellent in extrusion and Z or molding stability, and generates a very small amount of formaldehyde.
- it is composed of a conventional polyacetal resin containing a stabilizer such as an antioxidant agent.
- the resulting molded products produce a relatively large amount of formaldehyde, and corrode and discolor the living and working environments.
- the formaldehyde emission from the polyacetal ⁇ moldings are commercially available, in a dry (under constant-temperature dry atmosphere), the surface area lcm 2 per 2-5 g approximately and Z or wet (under constant-temperature wet atmosphere), The surface area is about 3-6 ⁇ g per lcm 2 .
- the polyacetal resin molded article of the present invention can effectively reduce the amount of formaldehyde generated from the molded article with a smaller amount of the specific carboxylic acid hydrazide. Furthermore, when the above-mentioned specific carboxylic acid hydrazide and the above-mentioned heat stabilizer (formaldehyde inhibitor) are used in combination, the amount of formaldehyde generated can be significantly suppressed. Specifically, in the dry process, the amount of formaldehyde generated is 1 or less, preferably 0 to 1.0 g, more preferably about 0 to 0.6 g per 1 cm 2 of the surface area of the molded article. 0.001— 1.
- the amount of formaldehyde generated is not more than 2.5 g (about 0 to 2 g), preferably 0.1 to 1.2 g / zg, more preferably 0 to 0.4 g / zg per lcm 2 of surface area of the molded article.
- about 0-0. 0 can be achieved, and usually about 0.001-1.2 / zg.
- the molded article of the present invention may have the formaldehyde generation amount in either of the dry type and the wet type. In particular, it has the formaldehyde generation amount in both the dry type and the wet type. Often have. Therefore, the molded article of the present invention can be used as a material that can cope with a more severe environment.
- the amount of formaldehyde generated in a dry system can be measured as follows.
- the amount of formaldehyde generated in a wet method can be measured as follows.
- the numerical definition of the amount of formaldehyde generated is such that conventional additives (such as a normal stabilizer and a release agent) are used as long as the polyacetal resin and the specific carboxylic acid hydrazide are contained.
- Most of the surface of molded products containing inorganic fillers, other polymers, etc. (for example, 50-100%) is not limited to molded polyacetal resin compositions Can also be applied to molded products composed of polyacetal resin (for example, multicolor molded products and coated molded products).
- the resin composition of the present invention can be produced by a conventional molding method (for example, injection molding, extrusion molding, compression molding, blow molding, vacuum molding, foam molding, rotational molding, gas injection molding, or the like). Thus, it is useful for molding various molded articles.
- a conventional molding method for example, injection molding, extrusion molding, compression molding, blow molding, vacuum molding, foam molding, rotational molding, gas injection molding, or the like.
- the molded article (molded article) of the present invention can also be used in applications where formaldehyde is harmful! Electric and electronic parts (active and passive parts, etc.), building materials, plumbing parts, daily necessities (life), parts for cosmetics, and medical (medical and medical) parts.
- the automotive parts include inner handles, fuel trunk openers, seat belt buckles, assist wraps, interior parts such as switches, knobs, levers, clips, and electric parts such as meters and connectors.
- System parts in-vehicle electric and electronic parts such as audio equipment and car navigation equipment, parts that come into contact with metals, such as window regulator carrier plates, door lock actuator parts, mirror parts, wiper motor system parts, and fuel systems And other mechanical components.
- Electric or electronic parts include parts or members of equipment made of a polyacetal resin molded article and having many metal contacts [for example, audio equipment such as a cassette tape recorder, VTR (video tape). Video equipment such as recorders, 8mm video and video cameras, or copiers, facsimile machines, word processors, computers, etc. OA (office automation) equipment, as well as toys, telephones, computers and other keyboards that operate with the driving force of a motor, spring, etc.]. Specific examples include chassis (base), gears, levers, cams, pulleys, and bearings.
- optical and magnetic media components for example, metal thin-film magnetic tape cassettes, magnetic disk cartridges, magneto-optical disk cartridges, etc.
- music It can be applied to metal tape cassettes, digital video tape cassettes, 8mm video tape cassettes, floppy (registered trademark) disk cartridges, mini disk cartridges, and the like.
- optical and magnetic media components include tape cassette components (tape cassette body, reels, hubs, guides, rollers, stoppers, lids, etc.), disk cartridge components (disk cartridge body (case), shutters, A clamping plate, etc.).
- the polyacetal resin molded product of the present invention can be used for building materials, piping parts, fasteners (slide fasteners, snap fasteners, hook-and-loop fasteners) such as lighting fixtures, fittings, piping, cocks, faucets, toilet peripheral parts and the like. , Rail fasteners, etc.), stationery, lip balm 'lipstick containers, washers, water purifiers, spray nozzles, spray containers, aerosol containers, general containers, needle holders, etc. It is suitably used for medical related parts.
- Two flat test pieces (100 mm x 40 mm x 2 mm; total surface area: 85.6 cm 2 ) are suspended by sealing two lids on a polyethylene bottle (capacity: 1 liter) containing 50 ml of distilled water and sealed, and the temperature is kept at 60 ° C in a thermostat. For 3 hours, and then allowed to stand at room temperature for 1 hour.
- the amount of formalin in the aqueous solution in the polyethylene bottle was determined according to JISK0102, 29 (formaldehyde), and the amount of formaldehyde generated per surface area ( ⁇ g / cm 2 ) was calculated.
- a polycyclic aromatic carboxylic acid hydrazide an antioxidant, a processing stabilizer, a heat stabilizer, a coloring agent, and a weather (light) stabilizer are added in the proportions shown in Tables 1 and 2.
- the mixture was charged into a main feed port of a twin screw extruder having a diameter of 30 mm having one vent port and melted and mixed to prepare a pellet-shaped composition.
- predetermined test pieces were molded by an injection molding machine, and the amount of formaldehyde generated in the test pieces was evaluated. The results are shown in Tables 1 and 2.
- Polyacetal resin copolymer (a-D 95 parts by weight, polycyclic aromatic carboxylic acid hydrazide (b-1), anti-oxidation agent (c 1), processing stabilizer (d-1), heat stabilizer ( e-1) was pre-blended in the proportions shown in Table 2, and then a 30 mm diameter twin screw extruder with one vent was used. Feed rocker was also added, and 5 parts by weight of the polyacetal resin copolymer (a-1) powder and a heat stabilizer [(e-5) in Example 14 and (e-6) in Example 15] In Example 16, a mixture with (e-7) heat-resistant stabilizer] 0.05 parts by weight was melt-mixed by adding a side feed rocker set after the vent port to prepare a pellet-shaped composition. Using the obtained pellets, a predetermined test piece was molded by an injection molding machine, and the amount of formaldehyde generated from the test piece was evaluated. Table 2 shows the results.
- the above melt index is a value (gZlO content) determined under the conditions of 190 ° C and 2169 g according to ASTM-D1238.
- (d-2) montanic acid ester [LUZA WAX-EP manufactured by Toyo Petrolite Co., Ltd.]
- (d-3) polyethylene glycol [molecular weight: 35000].
- Heat stabilizers organic carboxylic acid metal salts, alkaline earth metal salts, basic nitrogen compounds
- the resin compositions of Examples have extremely low formaldehyde emission as compared with Comparative Examples, so that the working and use environment can be greatly improved.
- the moldability can be improved, and the quality of the molded product can be improved by preventing bleeding.
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP04788011A EP1679346B1 (en) | 2003-10-01 | 2004-09-22 | Polyacetal resin composition |
JP2005514397A JP4764170B2 (ja) | 2003-10-01 | 2004-09-22 | ポリアセタール樹脂組成物 |
KR1020067006334A KR101121398B1 (ko) | 2003-10-01 | 2004-09-22 | 폴리아세탈 수지 조성물 |
US10/573,824 US20070123617A1 (en) | 2003-10-01 | 2004-09-22 | Polyacetal resin composition |
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JP2003343697 | 2003-10-01 | ||
JP2003-343697 | 2003-10-01 |
Publications (1)
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WO2005033201A1 true WO2005033201A1 (ja) | 2005-04-14 |
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PCT/JP2004/013828 WO2005033201A1 (ja) | 2003-10-01 | 2004-09-22 | ポリアセタール樹脂組成物 |
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US (1) | US20070123617A1 (ja) |
EP (1) | EP1679346B1 (ja) |
JP (1) | JP4764170B2 (ja) |
KR (1) | KR101121398B1 (ja) |
CN (1) | CN1890319A (ja) |
TW (1) | TWI354686B (ja) |
WO (1) | WO2005033201A1 (ja) |
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JP2005263921A (ja) * | 2004-03-17 | 2005-09-29 | Mitsubishi Engineering Plastics Corp | ポリアセタール樹脂組成物およびそれからなる成形品 |
JP2005336304A (ja) * | 2004-05-26 | 2005-12-08 | Mitsubishi Engineering Plastics Corp | ポリアセタール樹脂組成物およびそれからなる成形品 |
JP2006131568A (ja) * | 2004-11-08 | 2006-05-25 | Ueno Seiyaku Oyo Kenkyusho:Kk | ヒドロキシナフトエ酸ヒドラジドおよびその誘導体ならびにその製造方法 |
JP2007091973A (ja) * | 2005-09-30 | 2007-04-12 | Polyplastics Co | ポリアセタール樹脂組成物及び成形品 |
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JP2011020307A (ja) * | 2009-07-14 | 2011-02-03 | Asahi Kasei Chemicals Corp | ポリオキシメチレン樹脂組成物の製造方法 |
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- 2004-09-22 KR KR1020067006334A patent/KR101121398B1/ko not_active IP Right Cessation
- 2004-09-22 EP EP04788011A patent/EP1679346B1/en not_active Not-in-force
- 2004-09-22 US US10/573,824 patent/US20070123617A1/en not_active Abandoned
- 2004-09-22 CN CNA2004800357348A patent/CN1890319A/zh active Pending
- 2004-09-22 WO PCT/JP2004/013828 patent/WO2005033201A1/ja active Application Filing
- 2004-09-22 JP JP2005514397A patent/JP4764170B2/ja not_active Expired - Fee Related
- 2004-09-30 TW TW093129534A patent/TWI354686B/zh not_active IP Right Cessation
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JP2005263921A (ja) * | 2004-03-17 | 2005-09-29 | Mitsubishi Engineering Plastics Corp | ポリアセタール樹脂組成物およびそれからなる成形品 |
JP2005336304A (ja) * | 2004-05-26 | 2005-12-08 | Mitsubishi Engineering Plastics Corp | ポリアセタール樹脂組成物およびそれからなる成形品 |
JP4676167B2 (ja) * | 2004-05-26 | 2011-04-27 | 三菱エンジニアリングプラスチックス株式会社 | ポリアセタール樹脂組成物およびそれからなる成形品 |
JP2006131568A (ja) * | 2004-11-08 | 2006-05-25 | Ueno Seiyaku Oyo Kenkyusho:Kk | ヒドロキシナフトエ酸ヒドラジドおよびその誘導体ならびにその製造方法 |
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JP2010084140A (ja) * | 2008-09-03 | 2010-04-15 | Mitsubishi Engineering Plastics Corp | ポリアセタール樹脂組成物、樹脂成形品、ポリアセタール樹脂原料組成物の改質方法及び改質剤 |
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JP2011052126A (ja) * | 2009-09-02 | 2011-03-17 | Mitsubishi Engineering Plastics Corp | ポリアセタール樹脂組成物、樹脂成形品、ポリアセタール樹脂原料組成物の改質方法及び改質剤 |
JP2012255093A (ja) * | 2011-06-09 | 2012-12-27 | Mitsubishi Engineering Plastics Corp | 熱可塑性樹脂組成物および成形体 |
Also Published As
Publication number | Publication date |
---|---|
CN1890319A (zh) | 2007-01-03 |
KR101121398B1 (ko) | 2012-03-14 |
EP1679346B1 (en) | 2012-11-14 |
EP1679346A4 (en) | 2007-11-28 |
KR20060081712A (ko) | 2006-07-13 |
EP1679346A1 (en) | 2006-07-12 |
US20070123617A1 (en) | 2007-05-31 |
TW200521181A (en) | 2005-07-01 |
TWI354686B (en) | 2011-12-21 |
JPWO2005033201A1 (ja) | 2007-11-15 |
JP4764170B2 (ja) | 2011-08-31 |
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