WO2015162982A1 - 難燃性熱可塑性ポリウレタンエラストマー組成物 - Google Patents
難燃性熱可塑性ポリウレタンエラストマー組成物 Download PDFInfo
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- WO2015162982A1 WO2015162982A1 PCT/JP2015/054409 JP2015054409W WO2015162982A1 WO 2015162982 A1 WO2015162982 A1 WO 2015162982A1 JP 2015054409 W JP2015054409 W JP 2015054409W WO 2015162982 A1 WO2015162982 A1 WO 2015162982A1
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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
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/5205—Salts of P-acids with N-bases
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
Definitions
- the present invention relates to a thermoplastic polyurethane elastomer composition excellent in flame retardancy without impairing the original physical properties of the resin.
- Thermoplastic polyurethane elastomer consists of a long-chain part called a soft segment and a highly crystalline part called a hard segment, and its elasticity, elongation and mechanical properties derived from its characteristic structure. Excellent physical properties such as strength and abrasion resistance. Utilizing these resin properties, it has been used in various fields such as hoses, belts, electric wires, cables, pipes, shoe soles, automotive interior and exterior materials, and various molded products. ing.
- thermoplastic polyurethane elastomer In order to impart flame retardancy to this thermoplastic polyurethane elastomer, a flame retardant is blended, but the use of a halogen-based flame retardant has a problem of generating harmful gases during combustion. Therefore, it is known to add a compound containing nitrogen and / or phosphorus, such as melamine phosphate, melamine polyphosphate, and condensed phosphate ester, as a non-halogen flame retardant (Patent Document 1).
- a compound containing nitrogen and / or phosphorus such as melamine phosphate, melamine polyphosphate, and condensed phosphate ester
- Patent Literature 2 phosphate-based flame retardants that exhibit flame retardancy by forming a surface expansion layer (Intumescent) during combustion and suppressing the diffusion and heat transfer of decomposition products has also been proposed (Patent Literature) 2).
- the first object of the present invention is to provide heat having excellent flame retardancy and excellent physical properties of the resin without using a halogen-based flame retardant or a fluorine-based drip inhibitor that generates harmful gas during combustion.
- the object is to provide a plastic polyurethane elastomer.
- a second object of the present invention is to provide a molded article that does not generate a harmful gas derived from halogen during combustion and has excellent flame retardancy and excellent physical properties of the resin.
- the present invention relates to a thermoplastic polyurethane elastomer
- the present invention provides a flame retardant thermoplastic polyurethane elastomer composition comprising the following components (A), (B) and (C).
- n a number of 1 to 100
- X 1 is ammonia or a triazine derivative represented by the following general formula (2)
- p is a number satisfying 0 ⁇ p ⁇ n + 2.
- Z 1 and Z 2 may be the same or different, and —NR 5 R 6 group [wherein R 5 and R 6 are the same or different and represent a hydrogen atom, a straight chain of 1 to 6 carbon atoms or Represents a branched alkyl group or a methylol group], a hydroxyl group, a mercapto group, a linear or branched alkyl group having 1 to 10 carbon atoms, a linear or branched alkoxy group having 1 to 10 carbon atoms, a phenyl group, and vinyl It is a group selected from the group consisting of groups.)
- Y 1 is a diamine represented by [R 1 R 2 N (CH 2 ) mNR 3 R 4 ], a piperazine or a diamine containing a piperazine ring
- R 1 , R 2 , R 3 and R 4 are each a hydrogen atom, a linear or branched alkyl group having 1 to 5 carbon atoms, and R 1 , R 2 , R 3 and R 4 may be the same group but different.
- M is an integer of 1 to 10
- q is a number satisfying 0 ⁇ q ⁇ r + 2.
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention preferably further contains zinc oxide as the component (D).
- the component (A) is such that n in the general formula (1) is 2, p is 2, and X 1 is melamine (Z in the general formula (2)). Preference is given to melamine pyrophosphate wherein 1 and Z 2 are —NH 2 ).
- the component (B) is preferably piperazine polyphosphate in which q in the general formula (3) is 1 and Y 1 is piperazine.
- the piperazine polyphosphate is preferably piperazine pyrophosphate.
- the molded article of the present invention is obtained from any one of the above flame-retardant thermoplastic polyurethane elastomer compositions.
- thermoplastic polyurethane elastomer having excellent flame retardancy and excellent physical properties inherent to a resin can be obtained without using a halogen-based flame retardant or a fluorine-based anti-drip agent that generates harmful gas during combustion.
- a halogen-based flame retardant or a fluorine-based anti-drip agent that generates harmful gas during combustion.
- Example 2 is a photograph showing a state of formation of a surface expansion layer of a test piece of Example 1.
- 6 is a photograph showing a state of forming a surface expansion layer of a test piece of Comparative Example 1.
- thermoplastic polyurethane elastomer used for the flame-retardant thermoplastic polyurethane elastomer of the present invention will be described.
- thermoplastic polyurethane elastomer (TPU) used in the present invention is generally prepared using a polyol, a diisocyanate, and a chain extender.
- examples of the polyol include polyester polyol, polyester ether polyol, polycarbonate polyol, and polyether polyol.
- polyester polyol examples include aliphatic dicarboxylic acids such as succinic acid, adipic acid, sebacic acid, and azelaic acid; aromatic dicarboxylic acids such as phthalic acid, terephthalic acid, isophthalic acid, and naphthalenedicarboxylic acid.
- An alicyclic dicarboxylic acid such as hexahydrophthalic acid, hexahydroterephthalic acid, and hexahydroisophthalic acid; or an acid ester or anhydride thereof and ethylene glycol, 1,3-propylene glycol, 1,2; -Propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, neopentyl glycol, 1,3 -Octanediol, 1,9-nonanediol, etc. , Polyester polyols obtained by dehydration condensation reaction of a mixture thereof; polylactone diols obtained by ring-opening polymerization of lactones monomer such as ⁇ - caprolactone.
- Polyester ether polyols include aliphatic dicarboxylic acids such as succinic acid, adipic acid, sebacic acid, and azelaic acid; aromatic dicarboxylic acids such as phthalic acid, terephthalic acid, isophthalic acid, and naphthalenedicarboxylic acid. Alicyclic dicarboxylic acids such as hexahydrophthalic acid, hexahydroterephthalic acid, and hexahydroisophthalic acid; or acid esters or anhydrides thereof and glycols such as diethylene glycol or propylene oxide adducts, or the like The compound etc. which are obtained by dehydration condensation reaction with this mixture are mentioned.
- examples of the polycarbonate polyol include ethylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6
- One or more polyhydric alcohols such as hexanediol, 3-methyl-1,5-pentanediol, neopentyl glycol, 1,8-octanediol, 1,9-nonanediol, diethylene glycol, and diethylene carbonate
- Polycarbonate polyol obtained by reacting with dimethyl carbonate, diethyl carbonate or the like. Further, it may be a copolymer of polycaprolactone polyol (PCL) and polyhexamethylene carbonate (PHL).
- Polyether polyols include polyethylene glycol, polypropylene glycol, polytetramethylene ether glycol and the like obtained by polymerizing cyclic ethers such as ethylene oxide, propylene oxide, and tetrahydrofuran, and copolyethers thereof.
- diisocyanate examples include tolylene diisocyanate (TDI), 4,4′-diphenylmethane diisocyanate (MDI), 1,5-naphthylene diisocyanate (NDI), tolidine diisocyanate, 1,6-hexamethylene diisocyanate (HDI).
- TDI tolylene diisocyanate
- MDI 4,4′-diphenylmethane diisocyanate
- NDI 1,5-naphthylene diisocyanate
- HDI 1,6-hexamethylene diisocyanate
- IPDI Isophorone diisocyanate
- XDI xylylene diisocyanate
- hydrogenated XDI triisocyanate, tetramethylxylene diisocyanate (TMXDI), 1,6,11-undecane triisocyanate, 1,8-diisocyanate methyloctane, lysine ester
- Triisocyanate 1,3,6-hexamethylene triisocyanate, bicycloheptane triisocyanate, dicyclohexylmethane diisocyanate (hydrogenated MDI; HMDI) and the like.
- MDI 4,4′-diphenylmethane diisocyanate
- HDI 1,6-hexamethylene diisocyanate
- a low molecular weight polyol is used as the chain extender used for the preparation of the thermoplastic polyurethane elastomer (TPU).
- TPU thermoplastic polyurethane elastomer
- the low molecular weight polyol include ethylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6 -Aliphatic polyols such as hexanediol, 3-methyl-1,5-pentanediol, neopentyl glycol, 1,8-octanediol, 1,9-nonanediol, diethylene glycol, 1,4-cyclohexanedimethanol, glycerol, And aromatic glycols such as 1,4-dimethylolbenzene, bisphenol A, bisphenol A ethylene oxide or propylene oxide ad
- Thermoplastic polyurethane elastomers are ester (lactone) polyurethane copolymers, ester (adipate) polyurethane copolymers, ether polyurethane copolymers, carbonate polyurethane copolymers, ether ester polyurethane copolymers.
- Specific examples of these commercially available products include Elastollan C80A10 (manufactured by BASF Japan Ltd.), Elastollan C80A50.
- the (poly) phosphate compound represented by the general formula (1) used as the component (A) of the present invention includes (poly) phosphoric acid and ammonia or a triazine derivative represented by the general formula (2) Of salt.
- Examples of the linear or branched alkyl group having 1 to 10 carbon atoms represented by Z 1 and Z 2 in the general formula (2) include methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl , Isobutyl, amyl, isoamyl, tertiary amyl, hexyl, cyclohexyl, heptyl, isoheptyl, tertiary heptyl, n-octyl, isooctyl, tertiary octyl, 2-ethylhexyl, nonyl, decyl, etc.
- Examples of the 10 straight-chain or branched alkoxy groups include groups derived from these alkyl groups.
- Examples of the linear or branched alkyl group having 1 to 6 carbon atoms represented by R 5 and R 6 in the —NR 5 R 6 group that Z 1 and Z 2 can take include, for example, the alkyl groups listed above. Among them, those having 1 to 6 carbon atoms are mentioned.
- triazine derivative examples include melamine, acetoguanamine, benzoguanamine, acrylic guanamine, 2,4-diamino-6-nonyl-1,3,5-triazine, 2,4-diamino-6-hydroxy-1 , 3,5-triazine, 2-amino-4,6-dihydroxy-1,3,5-triazine, 2,4-diamino-6-methoxy-1,3,5-triazine, 2,4-diamino- 6-ethoxy-1,3,5-triazine, 2,4-diamino-6-propoxy-1,3,5-triazine, 2,4-diamino-6-isopropoxy-1,3,5-triazine, 2 , 4-diamino-6-mercapto-1,3,5-triazine, 2-amino-4,6-dimercapto-1,3,5-triazine and the like.
- Examples of the (poly) phosphate compound represented by the general formula (1) preferably used as the component (A) include a salt of (poly) phosphoric acid and melamine or an ammonium polyphosphate compound.
- Examples of the salt of (poly) phosphoric acid and melamine that are preferably used include melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate.
- n in the above general formula (1) is 2
- Melamine pyrophosphate in which p is 2 and X 1 is melamine is particularly preferred.
- the salt of phosphoric acid and melamine can be obtained by the following method.
- sodium pyrophosphate and melamine can be reacted by adding hydrochloric acid at an arbitrary reaction ratio, and neutralized with sodium hydroxide to obtain melamine pyrophosphate.
- the ammonium polyphosphate compound is a compound containing ammonium polyphosphate alone or ammonium polyphosphate as a main component.
- Commercially available products can be used as the ammonium polyphosphate alone. Examples of commercially available products include Exolite-422 and Exolite-700 manufactured by Clariant, Foschek-P / 30, Foschek-P / 40 manufactured by Monsanto, Sumitomo Examples include SUMI SAFE-P manufactured by Chemical Co., Ltd., and TERRAGE-S10 and TERRAGE-S20 manufactured by Chisso Corporation.
- the surface of ammonium polyphosphate is coated with a material in which ammonium polyphosphate is coated or microencapsulated with a thermosetting resin, or with a melamine monomer or other nitrogen-containing organic compound. And those that have been treated with a surfactant or silicon, and those that have been made slightly soluble by adding melamine or the like in the process of producing ammonium polyphosphate.
- the (poly) phosphate compound represented by the general formula (3) used as the component (B) of the present invention is composed of (poly) phosphoric acid and a diamine represented by Y 1 ([R 1 R 2 N ( CH 2 ) mNR 3 R 4 ] and a diamine, piperazine or a diamine containing a piperazine ring).
- Y 1 [R 1 R 2 N ( CH 2 ) mNR 3 R 4 ]
- a diamine, piperazine or a diamine containing a piperazine ring examples of the linear or branched alkyl group having 1 to 5 carbon atoms represented by R 1 to R 4 include those described above as specific examples of the alkyl group represented by Z 1 and Z 2 . Examples thereof include those having 1 to 5 carbon atoms.
- diamine represented by Y 1 in the general formula (3) examples include N, N, N ′, N′-tetramethyldiaminomethane, ethylenediamine, N, N′-dimethylethylenediamine, and N, N.
- Examples of the (poly) phosphate compound represented by the general formula (3) preferably used as the component (B) include a salt of (poly) phosphoric acid and piperazine.
- Specific examples of the salt of (poly) phosphoric acid and piperazine include piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate.
- the salt of (poly) phosphoric acid and piperazine can be obtained by the following method.
- piperazine pyrophosphate piperazine and pyrophosphoric acid are reacted in water or an aqueous methanol solution to easily obtain a poorly water-soluble precipitate.
- piperazine polyphosphate a salt obtained from polyphosphoric acid and piperazine made of a mixture of orthophosphoric acid, pyrophosphoric acid, tripolyphosphoric acid and other polyphosphoric acids may be used, and the constitution of the raw material polyphosphoric acid is not particularly limited. (B) 2 or more types of mixtures may be sufficient as a component.
- the blending amount of the component (A) is preferably 5 to 60 parts by mass, more preferably 10 to 30 parts by mass, and even more preferably 12 to 20 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane elastomer.
- the blending amount of the component (B) is preferably 10 to 90 parts by mass, more preferably 15 to 45 parts by mass, and still more preferably 18 to 30 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane elastomer. .
- the total blending amount of the component (A) and the component (B) exhibits excellent flame retardancy and does not impair the physical properties of the thermoplastic polyurethane elastomer.
- the amount is preferably 15 to 65 parts by mass, more preferably 25 to 55 parts by mass, and still more preferably 30 to 50 parts by mass. If it is less than 15 parts by mass, sufficient flame retardancy may not be obtained, and if it exceeds 65 parts by mass, the physical properties inherent to the resin may be reduced.
- (C) component of this invention is a silicon dioxide, The effect which prevents a drip is exhibited by mix
- the form of silicon dioxide may be any of powder, granule, and granule, and the type thereof is not particularly limited, but any of natural silica and synthetic silica may be used, either crystalline silica or amorphous silica may be used, dry silica, Any of fumed silica, fused silica, fused silica, and wet silica may be used. Further, it may be one having pores inside (so-called porous or porous) or one having no pores (so-called nonporous).
- Silicon dioxide is preferably in the form of fine powder, and the average primary particle size is preferably 0.005 to 30 ⁇ m, more preferably 0.1 to 10 ⁇ m, and even more preferably 0.5 to 5 ⁇ m. If the average primary particle diameter exceeds 30 ⁇ m, the physical properties inherent to the resin may be reduced. The average primary particle diameter can be measured using, for example, a laser diffraction / scattering particle size distribution analyzer.
- the surface of silicon dioxide may be surface-treated with a silane coupling agent or a surface treatment agent.
- Commercially available products of silicon dioxide include “AEROSIL” manufactured by Nippon Aerosil Co., Ltd., “Leosir” and “Tokuseal” manufactured by Tokuyama Co., Ltd. “Carplex” manufactured by Shionogi & Co., Ltd., “Fuji Silysia Co., Ltd.” "Siricia”, Mizusawa Chemical Co., Ltd. "Mizukasil” and the like.
- the blending amount of silicon dioxide as the component (C) is preferably 0.1 to 10.0 parts by weight, more preferably 0.5 to 5.0 parts by weight, and still more based on 100 parts by weight of the thermoplastic polyurethane elastomer.
- the amount is preferably 1.5 to 3.0 parts by mass. If it is less than 0.1 part by mass, the effect of preventing dripping may not be obtained, and if it exceeds 10.0 parts by mass, the physical properties inherent in the resin may be lowered, which is not preferable.
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention preferably further contains zinc oxide as the component (D).
- the zinc oxide may be surface-treated.
- Commercially available zinc oxide can be used, for example, one type of zinc oxide (manufactured by Mitsui Kinzoku Co., Ltd.), partially coated zinc oxide (manufactured by Mitsui Kinzoku Kogyo Co., Ltd.), nano fine 50 (average particle size) 0.02 ⁇ m ultrafine zinc oxide (manufactured by Sakai Chemical Industry Co., Ltd.), Nanofine K (ultrafine zinc oxide coated with zinc silicate having an average particle size of 0.02 ⁇ m: Sakai Chemical Industry Co., Ltd.), etc. .
- the blending amount of the component (D) zinc oxide is preferably 0.1 to 10 parts by weight, more preferably 0.5 to 5.0 parts by weight, and still more based on 100 parts by weight of the thermoplastic polyurethane elastomer composition.
- the amount is preferably 1.0 to 3.0 parts by mass.
- silicone oil may be blended for the purpose of suppressing secondary aggregation and improving water resistance.
- silicone oils include polysiloxane side chains, dimethyl silicone oils whose terminals are all methyl groups, methyl phenyl silicone oils whose polysiloxane side chains are partially phenyl groups, and part of polysiloxane side chains.
- silicone oil examples include KF-96 (manufactured by Shin-Etsu Chemical Co., Ltd.), KF-965 (manufactured by Shin-Etsu Chemical Co., Ltd.), KF-968 (manufactured by Shin-Etsu Chemical Co., Ltd.) as dimethyl silicone oil.
- silicone oils having a methyl hydrogen silicone oil or a methyl hydrogen polysiloxane structure examples include KF-99 (manufactured by Shin-Etsu Chemical Co., Ltd.), KF-9901 (Shin-Etsu Chemical Co., Ltd.), HMS-151 ( Gelest), HMS-071 (Gelest), HMS-301 (Gelest), DMS-H21 (Gelest), etc.
- Examples of methylphenyl silicone oil include KF-50 (Shin-Etsu).
- a silane coupling agent is a compound having a hydrolyzable group together with an organic functional group, and is represented by, for example, the general formula A— (CH 2 ) k —Si (OR) 3 .
- A is an organic functional group, k represents a number of 1 to 3, and R represents a methyl group or an ethyl group.
- Examples of the organic group of A include an epoxy group, a vinyl group, a methacryl group, an amino group, and a mercapto group.
- what has an epoxy group is especially preferable.
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention may contain a polyhydric alcohol compound as a flame retardant aid.
- the polyhydric alcohol compound is a compound in which a plurality of hydroxyl groups are bonded, for example, pentaerythritol, dipentaerythritol, tripentaerythritol, polypentaerythritol, neopentyl glycol, trimethylolpropane, ditrimethylolpropane, 1, 3,5-tris (2-hydroxyethyl) isocyanurate (THEIC), polyethylene glycol, glycerin, diglycerin, mannitol, maltitol, lactitol, sorbitol, erythritol, xylitol, xylose, sucrose (sucrose), trehalose, inositol, Fructose, maltose, lactose,
- polyhydric alcohol compounds one or more selected from the group of pentaerythritol and pentaerythritol condensates such as pentaerythritol, dipentaerythritol, tripentaerythritol, and polypentaerythritol are preferred, and dipentaerythritol, pentaerythritol Condensates are particularly preferred and dipentaerythritol is most preferred.
- THEIC and sorbitol can also be used conveniently.
- the condensate of pentaerythritol may be a mixture of a condensate of pentaerythritol and pentaerythritol (in the present invention, this is called a (poly) pentaerythritol mixture), and this (poly) pentaerythritol mixture has a degree of condensation of pentaerythritol of n.
- the compound shown by following General formula (4) is mentioned.
- t is an integer of 1 or more.
- Examples of the (poly) pentaerythritol mixture include those in which the condensate of pentaerythritol represented by the general formula (4) is ether-bonded in the molecule, intermediate methylol groups are ether-bonded to other molecules, and network-like Those that are connected to each other, and molecules that are further connected and become macrocyclic ether structures in various places may be included.
- the (poly) pentaerythritol mixture is not particularly limited and can be produced by a known method.
- pentaerythritol and / or pentaerythritol condensate can be produced by heat dehydration condensation reaction as it is or in the presence of a suitable catalyst and solvent.
- Examples of the catalyst used in the production of the (poly) pentaerythritol mixture include inorganic acids and organic acids that are usually used in the dehydration condensation reaction of alcohols.
- examples of inorganic acids include mineral acids such as phosphoric acid and sulfuric acid; acidic salts of these mineral acids; solid acid catalysts such as clay minerals (for example, montmorillonite), silica / alumina, and zeolite.
- examples of the organic acid include formic acid and p-toluenesulfonic acid.
- the amount of the catalyst used is not particularly limited, but when a water-soluble acid catalyst is used, the amount in the reaction system during the reaction may be an amount that can be maintained at less than 7, preferably 5 or less. When a solid acid catalyst is used, the amount used is usually 0.1 to 100% by mass with respect to pentaerythritol.
- Examples of the solvent used in the production of the (poly) pentaerythritol mixture include hydrocarbons such as benzene, xylene, decalin, tetralin, dioxane, tetrahydrofuran, ethyl ether, anisole, phenyl ether, diglyme, tetraglyme, 18- Ethers such as crown-6, ketones such as methyl acetate, ethyl butyrate, methyl benzoate and ⁇ -butyrolactone, N-methylpyrrolidone-one, N, N-dimethylacetamide, N-methylpiperidone, hexamethylphosphoric triamide N-substituted amides such as N, N-diethylaniline, N-methylmorpholine, tertiary amines such as pyridine and quinoline, sulfones such as sulfolane, sulfoxides such as dimethyl sulfoxide,
- the reaction temperature of the heat dehydration condensation in the production of the (poly) pentaerythritol mixture is usually about 100 to 280 ° C., more preferably 150 to 240 ° C. If it is lower than 100 ° C., the reaction may be slow, and if it is higher than 280 ° C., it may be difficult to control the condensation reaction.
- the blending amount is preferably 0.01 to 10.0 parts by weight, more preferably 1.0 to 7.0 parts by weight with respect to 100 parts by weight of the thermoplastic polyurethane elastomer. Even more preferably, it is 1.5 to 3.0 parts by mass.
- a lubricant with the flame-retardant thermoplastic polyurethane elastomer composition of this invention as needed.
- lubricants include pure hydrocarbon lubricants such as liquid paraffin, natural paraffin, micro wax, synthetic paraffin, low molecular weight polyethylene and polyethylene wax; halogenated hydrocarbon lubricants; fatty acid lubricants such as higher fatty acids and oxy fatty acids.
- Fatty acid amide type lubricants such as fatty acid amides and bis fatty acid amides
- ester type lubricants such as lower alcohol esters of fatty acids, polyhydric alcohol esters of fatty acids such as glycerides, polyglycol esters of fatty acids, fatty alcohol esters of fatty acids (ester waxes) ;
- Metal soap fatty alcohol, polyhydric alcohol, polyglycol, polyglycerol, fatty acid and polyhydric alcohol partial ester, fatty acid and polyglycol, polyglycerol partial ester lubricant, silicone oil, mineral oil, etc. It is.
- the blending amount of these lubricants is preferably 0.01 to 5 parts by mass, more preferably 0.3 to 2 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane elastomer.
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention is a kind of organic or inorganic flame retardant or flame retardant aid that does not contain a halogen, if necessary, as long as the effects of the present invention are not impaired.
- These flame retardants and flame retardant aids include triazine ring-containing compounds, metal hydroxides, phosphate ester flame retardants, condensed phosphate ester flame retardants, phosphate flame retardants, inorganic phosphorus flame retardants, dialkylphosphinic acids
- Examples include salts, silicone flame retardants, metal oxides, boric acid compounds, expansive graphite, other inorganic flame retardant aids, and other organic flame retardants.
- triazine ring-containing compound examples include melamine, ammelin, benzguanamine, acetoguanamine, phthalodiguanamine, melamine cyanurate, butylene diguanamine, norbornene diguanamine, methylene diguanamine, ethylene dimelamine, trimethylene dimelamine, tetra Examples include methylene dimelamine, hexamethylene dimelamine, and 1,3-hexylene dimelamine.
- metal hydroxide examples include magnesium hydroxide, aluminum hydroxide, calcium hydroxide, barium hydroxide, zinc hydroxide, Kismer 5A (trademark of magnesium hydroxide manufactured by Kyowa Chemical Industry Co., Ltd.) and the like.
- Examples of the phosphoric acid ester flame retardant include, for example, trimethyl phosphate, triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate, trischloroethyl phosphate, trisdichloropropyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyl Diphenyl phosphate, trixylenyl phosphate, octyl diphenyl phosphate, xylenyl diphenyl phosphate, trisisopropylphenyl phosphate, 2-ethylhexyl diphenyl phosphate, t-butylphenyl diphenyl phosphate, bis- (t-butylphenyl) phenyl phosphate, tris- ( t-butylphenyl) phosphate, isopropylphenyldiphenylphosphate, bis- (iso
- Examples of the condensed phosphate ester flame retardant include 1,3-phenylene bis (diphenyl phosphate), 1,3-phenylene bis (dixylenyl phosphate), bisphenol A bis (diphenyl phosphate) and the like.
- Examples of the inorganic phosphorus flame retardant include red phosphorus.
- Examples of the dialkylphosphinic acid salts include aluminum diethylphosphinate and zinc diethylphosphinate.
- inorganic flame retardant aids include inorganic compounds such as titanium oxide, aluminum oxide, magnesium oxide, hydrotalcite, and surface-treated products thereof. Specific examples thereof include, for example, TIPAQUE R-680 (trademark of titanium oxide manufactured by Ishihara Sangyo Co., Ltd.), Kyowa Mag 150 (trademark of magnesium oxide manufactured by Kyowa Chemical Industry Co., Ltd.), and DHT-4A (hydrotalcite: Kyowa).
- TIPAQUE R-680 trademark of titanium oxide manufactured by Ishihara Sangyo Co., Ltd.
- Kyowa Mag 150 trademark of magnesium oxide manufactured by Kyowa Chemical Industry Co., Ltd.
- DHT-4A hydrotalcite: Kyowa
- Various commercial products such as Chemical Industry Co., Ltd., Alkamizer 4 (trademark of zinc-modified hydrotalcite manufactured by Kyowa Chemical Industry Co., Ltd.) can be used.
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention comprises a phenol-based antioxidant, a phosphorus-based antioxidant, a thioether-based antioxidant, an ultraviolet absorber, a hindered amine-based light stabilizer, and an anti-aging agent as necessary. Etc. may be blended.
- phenolic antioxidant examples include 2,6-ditert-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, distearyl (3,5-ditert-butyl-4). -Hydroxybenzyl) phosphonate, 1,6-hexamethylenebis [(3,5-ditert-butyl-4-hydroxyphenyl) propionic acid amide], 4,4'-thiobis (6-tert-butyl-m-cresol ), 2,2′-methylenebis (4-methyl-6-tert-butylphenol), 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), 4,4′-butylidenebis (6-tert-butyl) -M-cresol), 2,2'-ethylidenebis (4,6-ditert-butylphenol), 2,2'-ethylidenebis (4-secondarybutyl-6-tert-butylphenol)
- the blending amount of these phenolic antioxidants is preferably 0.001 to 10 parts by mass, more preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane elastomer.
- Examples of the phosphorus antioxidant include trisnonylphenyl phosphite, tris [2-tert-butyl-4- (3-tert-butyl-4-hydroxy-5-methylphenylthio) -5-methylphenyl].
- Phosphite tridecyl phosphite, octyl diphenyl phosphite, di (decyl) monophenyl phosphite, di (tridecyl) pentaerythritol diphosphite, di (nonylphenyl) pentaerythritol diphosphite, bis (2,4-di Tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-ditert-butyl-4-methylphenyl) pentaerythritol diphosphite, bis (2,4,6-tritert-butylphenyl) pentaerythritol diphosphite Phosphite, bis (2,4-dicumylphenyl) pen Erythritol diphosphite, tetra (tridecyl) isopropylidene diphenol diphosphit
- thioether-based antioxidant examples include dialkylthiodipropionates such as dilauryl thiodipropionate, dimyristyl thiodipropionate, distearyl thiodipropionate, and pentaerythritol tetra ( ⁇ -alkylthiopropionate esters). Is mentioned.
- the blending amount of these thioether-based antioxidants is preferably 0.001 to 10 parts by mass and more preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane elastomer.
- Examples of the ultraviolet absorber include 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 5,5′-methylenebis (2-hydroxy-4-methoxybenzophenone).
- 2-Hydroxybenzophenones such as 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-ditert-butylphenyl) -5-chloro Benzotriazole, 2- (2′-hydroxy-3′-tert-butyl-5′-methylphenyl) -5-chlorobenzotriazole, 2- (2′-hydroxy-5′-tert.
- Octylphenyl) benzotriazole 2- (2′-hydroxy-3 ′, 5′-dicumylphenyl) benzotriazole, 2,2′-methylenebis ( 2- (2′-hydroxyphenyl) such as tert-octyl-6- (benzotriazolyl) phenol) and 2- (2′-hydroxy-3′-tert-butyl-5′-carboxyphenyl) benzotriazole Benzotriazoles; phenyl salicylate, resorcinol monobenzoate, 2,4-ditert-butylphenyl-3,5-ditert-butyl-4-hydroxybenzoate, 2,4-ditert-amylphenyl-3,5-di Benzoates such as tert-butyl-4-hydroxybenzoate and hexadecyl-3,5-ditert-butyl-4-hydroxybenzoate; 2-ethyl-2′-ethoxyoxanilide, 2-ethoxy-4′
- hindered amine light stabilizer examples include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2, 6,6-tetramethyl-4-piperidylbenzoate, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-tetramethyl-4-piperidyl) Sebacate, bis (1-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) -1,2,3,4 -Butanetetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) -1,2,3,4-butanetetracarboxylate, bis (2,2, 6,6-tetramethyl-4-piperidyl) -di (tridecyl
- anti-aging agent examples include naphthylamine, diphenylamine, p-phenyldiamine, quinoline, hydroquinone derivatives, monophenol, thiobisphenol, hindered phenol, and phosphite.
- the blending amount of these anti-aging agents is preferably 0.001 to 10 parts by mass and more preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the thermoplastic polyurethane elastomer.
- a reinforcing material may be blended as an optional component as long as the effects of the present invention are not impaired.
- a fibrous, plate-like, granular or powdery material usually used for reinforcing a synthetic resin can be used.
- These reinforcing materials may be coated or focused with a thermoplastic resin such as an ethylene / vinyl acetate copolymer or a thermosetting resin such as an epoxy resin, or with a coupling agent such as aminosilane or epoxysilane. It may be processed.
- a thermoplastic resin such as an ethylene / vinyl acetate copolymer or a thermosetting resin such as an epoxy resin
- a coupling agent such as aminosilane or epoxysilane. It may be processed.
- a layered silicate may be blended as an optional component as long as the effects of the present invention are not impaired.
- layered silicates include smectite clay minerals such as montmorillonite, saponite, hectorite, beidellite, stevensite, nontronite, vermiculite, halloysite, swellable mica, talc, etc.
- quaternary ammonium cations and phosphonium cations may be intercalated.
- a crystal nucleating agent may be further blended as an optional component as long as the effects of the present invention are not impaired.
- the crystal nucleating agent those generally used as a polymer crystal nucleating agent can be appropriately used.
- an inorganic crystal nucleating agent or an organic crystal nucleating agent can be used.
- the inorganic crystal nucleating agent examples include kaolinite, synthetic mica, clay, zeolite, graphite, carbon black, magnesium oxide, titanium oxide, calcium sulfide, boron nitride, calcium carbonate, barium sulfate, aluminum oxide, and neodymium oxide. And metal salts such as phenylphosphonate.
- These inorganic crystal nucleating agents may be modified with an organic substance in order to enhance the dispersibility in the composition.
- organic crystal nucleating agents include sodium benzoate, potassium benzoate, lithium benzoate, calcium benzoate, magnesium benzoate, barium benzoate, lithium terephthalate, sodium terephthalate, potassium terephthalate, calcium oxalate , Sodium laurate, potassium laurate, sodium myristate, potassium myristate, calcium myristate, sodium octacosanoate, calcium octacosanoate, sodium stearate, potassium stearate, lithium stearate, calcium stearate, magnesium stearate, stearic acid Barium, sodium montanate, calcium montanate, sodium toluate, sodium salicylate, potassium salicylate, zinc salicylate, Luminium dibenzoate, potassium dibenzoate, lithium dibenzoate, organic carboxylic acid metal salts such as sodium ⁇ -naphthalate, sodium cyclohexanecarboxylate, etc., organic sulfonates such as sodium
- a plasticizer may be blended as an optional component as long as the effects of the present invention are not impaired.
- the plasticizer those generally used as polymer plasticizers can be appropriately used.
- polyester plasticizers, glycerin plasticizers, polycarboxylic acid ester plasticizers, polyalkylene glycol plasticizers and epoxies examples thereof include plasticizers.
- polyester plasticizer examples include acid components such as adipic acid, sebacic acid, terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid, diphenyldicarboxylic acid, rosin, propylene glycol, 1,3-butanediol, 1,4 Examples thereof include polyesters composed of diol components such as butanediol, 1,6-hexanediol, ethylene glycol and diethylene glycol, and polyesters composed of hydroxycarboxylic acids such as polycaprolactone. These polyesters may have their ends blocked with a monofunctional carboxylic acid or a monofunctional alcohol, and may be blocked with an epoxy compound or the like.
- acid components such as adipic acid, sebacic acid, terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid, diphenyldicarboxylic acid, rosin, propylene glycol, 1,3-butanediol, 1,4
- glycerin plasticizer examples include glycerin monoacetomonolaurate, glycerin diacetomonolaurate, glycerin monoacetomonostearate, glycerin diacetomonooleate, and glycerin monoacetomonomontanate.
- polyvalent carboxylic acid ester plasticizers include dimethyl phthalate, diethyl phthalate, dibutyl phthalate, dioctyl phthalate, diheptyl phthalate, dibenzyl phthalate, butyl benzyl phthalate, trimellit Trimellitic acid esters such as tributyl acid, trioctyl trimellitic acid, trihexyl trimellitic acid, diisodecyl adipate, n-octyl-n-decyl adipate, methyl diglycol butyl diglycol adipate, benzyl methyl diglycol adipate, adipine Adipic acid esters such as benzyl butyl diglycol acid, citrate esters such as triethyl acetyl citrate and tributyl acetyl citrate, azelaic acid esters such as di-2-ethylhexyl azel
- polyalkylene glycol plasticizer examples include polyethylene glycol, polypropylene glycol, poly (ethylene oxide / propylene oxide) block and / or random copolymer, polytetramethylene glycol, ethylene oxide addition polymer of bisphenols, and bisphenols. And end-capped compounds such as terminal epoxy-modified compounds, terminal ester-modified compounds, and terminal ether-modified compounds.
- the epoxy plasticizer generally refers to an epoxy triglyceride composed of an alkyl epoxy stearate and soybean oil, but there are other so-called epoxy resins mainly made of bisphenol A and epichlorohydrin. Can be used.
- plasticizers include benzoic acid esters of aliphatic polyols such as neopentyl glycol dibenzoate, diethylene glycol dibenzoate, triethylene glycol di-2-ethylbutyrate, fatty acid amides such as stearamide, oleic acid
- plasticizers include benzoic acid esters of aliphatic polyols such as neopentyl glycol dibenzoate, diethylene glycol dibenzoate, triethylene glycol di-2-ethylbutyrate, fatty acid amides such as stearamide, oleic acid
- aliphatic carboxylic acid esters such as butyl, oxyacid esters such as methyl acetylricinoleate and butyl acetylricinoleate, pentaerythritol, various sorbitols, polyacrylic acid esters, and paraffins.
- 1 type may be used or 2 or more types may be used
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention may further contain an acrylic processing aid as an optional component within a range not impairing the effects of the present invention.
- an acrylic processing aid one obtained by polymerizing one kind of (meth) acrylic acid ester or copolymerizing two or more kinds can be used.
- the flame retardant thermoplastic polyurethane elastomer composition of the present invention can be blended with an anti-drip agent as long as the effects of the present invention are not impaired.
- the blending of the fluorine-based anti-drip agent is not preferable from the viewpoint of non-halogen, and further, the physical properties, particularly elongation, of the thermoplastic polyurethane elastomer is lowered, which is not preferable.
- the blending of polytetrafluoroethylene is not particularly preferred.
- fluorine anti-drip agents include, for example, fluorine resins such as polytetrafluoroethylene, polyvinylidene fluoride, polyhexafluoropropylene, sodium perfluoromethanesulfonate, potassium perfluoro-n-butanesulfonate, Perfluoroalkanesulfonic acid alkali metal salts such as perfluoro-t-butanesulfonic acid potassium salt, perfluorooctanesulfonic acid sodium salt, perfluoro-2-ethylhexanesulfonic acid calcium salt, or perfluoroalkanesulfonic acid alkaline earths A metal salt etc. are mentioned.
- fluorine resins such as polytetrafluoroethylene, polyvinylidene fluoride, polyhexafluoropropylene, sodium perfluoromethanesulfonate, potassium perfluoro-n-butanesulfonate, Perfluoroalkane
- additives that are usually used in synthetic resins as necessary, for example, crosslinking agents, antistatic agents, metal soaps, spotting agents, antifogging agents.
- the plate-out preventing agent, the surface treatment agent, the fluorescent agent, the antifungal agent, the bactericidal agent, the foaming agent, the metal deactivator, the release agent, the pigment, the processing aid, etc. Can be blended.
- the blending amount does not impair the effects of the present invention.
- it will not be restrict
- thermoplastic polyurethane elastomer composition of the present invention a synthetic resin other than the thermoplastic polyurethane elastomer may be blended as a resin component.
- synthetic resins include polypropylene, high density polyethylene, low density polyethylene, linear low density polyethylene, crosslinked polyethylene, ultrahigh molecular weight polyethylene, polybutene-1, poly-3-methylpentene, and other ⁇ -olefin heavy polymers.
- Polymers or polyolefins such as ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-propylene copolymer, and copolymers thereof, polyvinyl chloride, polyvinylidene chloride, chlorinated polyethylene, chlorinated polypropylene, Polyvinylidene fluoride, rubber chloride, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-vinylidene chloride-vinyl acetate terpolymer, vinyl chloride- Acrylic ester copolymer, vinyl chloride -Halogen-containing resins such as maleic acid ester copolymer, vinyl chloride-cyclohexyl maleimide copolymer; petroleum resin, coumarone resin, polystyrene, polyvinyl acetate, acrylic resin, polymethyl methacrylate
- thermoplastic elastomers examples include isoprene rubber, butadiene rubber, acrylonitrile-butadiene copolymer rubber, styrene-butadiene copolymer rubber, fluorine rubber, and silicone rubber.
- synthetic resins include olefin-based thermoplastic elastomers, styrene-based thermoplastic elastomers, polyester-based thermoplastic elastomers, nitrile-based thermoplastic elastomers, nylon-based thermoplastic elastomers, vinyl chloride-based thermoplastic elastomers, polyamide-based thermoplastics. Examples thereof include a plastic elastomer.
- Synthetic resins may be used alone or in combination of two or more.
- the synthetic resin may be alloyed.
- Synthetic resin includes molecular weight, degree of polymerization, density, softening point, proportion of insoluble matter in solvent, degree of stereoregularity, presence or absence of catalyst residue, type and blending ratio of monomer as raw material, type of polymerization catalyst (for example, Ziegler catalyst, metallocene catalyst, etc.) can be used.
- ethylene polymers such as high density polyethylene (HDPE), low density polyethylene (LDPE), and linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, Ethylene copolymers such as ethylene-methyl acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer are preferred.
- HDPE high density polyethylene
- LDPE low density polyethylene
- LLDPE linear low density polyethylene
- Ethylene copolymers such as ethylene-methyl acrylate copolymer, ethylene-acrylic acid copolymer, and ethylene-methacrylic acid copolymer are preferred.
- the blending amount is not particularly limited as long as the effect of the present invention is not impaired, but with respect to 100 parts by mass of the thermoplastic polyurethane elastomer.
- the amount is preferably 100 parts by mass or less, and more preferably 50 parts by mass or less.
- the timing when the components (A), (B) and (C) and, if necessary, the component (D) are further added to the thermoplastic polyurethane elastomer is particularly limited.
- two or more types selected from the components (A) to (D) may be blended into a thermoplastic polyurethane elastomer after making one pack, or each component may be blended with a thermoplastic polyurethane elastomer. May be.
- each component may be pulverized and mixed in advance, or may be pulverized after mixing each component in advance. The same applies when a resin other than the thermoplastic polyurethane elastomer and other optional components are blended.
- the molded product excellent in flame retardancy can be obtained by molding the flame retardant thermoplastic polyurethane elastomer composition of the present invention.
- the molding method is not particularly limited, and examples thereof include extrusion processing, calendar processing, injection molding, roll, compression molding, blow molding, and the like, and molded products having various shapes such as resin plates, sheets, films, and irregular shaped products. Can be manufactured.
- thermoplastic polyurethane elastomer composition of the present invention and its molded product are used in electricity, electronics, communications, agriculture, forestry and fisheries, mining, construction, food, textile, clothing, medical, coal, petroleum, rubber, leather, automobile, precision It can be used in a wide range of industrial fields such as equipment, wood, building materials, civil engineering, furniture, printing and musical instruments. More specifically, printers, personal computers, word processors, keyboards, PDAs (small information terminals), telephones, copiers, facsimiles, ECRs (electronic cash registers), calculators, electronic notebooks, cards, holders, stationery, etc.
- AV equipment such as liquid crystal displays, connectors, relays, capacitors, switches, printed boards, coil bobbins, semiconductor sealing materials, LED sealing materials, electric wires, cables, transformers, deflection yokes, distribution boards, watches, etc.
- housings frames, housings, covers, exteriors
- the flame retardant thermoplastic polyurethane elastomer composition and the molded body thereof according to the present invention include a seat (filling, outer material, etc.), belt, ceiling, compatible top, armrest, door trim, rear package tray, carpet, mat, sun visor.
- Foil covers mattress covers, airbags, insulation materials, suspension hands, suspension straps, wire coating materials, electrical insulation materials, paints, coating materials, upholstery materials, flooring materials, corner walls, carpets, wallpaper, wall covering materials , Exterior materials, interior materials, roofing materials, deck materials, wall materials, pillar materials, floorboards, eaves materials, frames and repetitive shapes, window and door shapes, slabs, siding, terraces, balconies, soundproofing plates, heat insulation Automobiles, hybrid cars, electric cars, vehicles, ships, aircraft, buildings, housing and building materials, civil engineering materials, clothing, curtains, sheets, plywood, etc. ⁇ , carpet, entrance mats, sheets, buckets, hoses, containers, glasses, bags, cases, goggles, skis, rackets, tents, household goods of the musical instrument or the like, and is used in sporting goods, various applications and the like.
- Examples 1 to 5 and Comparative Examples 1 to 5 100 parts by mass of a thermoplastic polyurethane elastomer (manufactured by Dainichi Seika Kogyo Co., Ltd .: Resamine P-2283), 0.1 part by mass of calcium stearate (lubricant), tetrakis [3- (3,5-ditertiarybutyl-4 -Hydroxyphenyl) methyl propionate] methane (phenolic antioxidant) 0.1 part by mass and tris (2,4-di-tert-butylphenyl) phosphite (phosphorus antioxidant) 0.1 part by mass And 0.3 part by mass of glycerin monostearate (lubricant) and the components shown in Table 1 below were blended and then extruded at 200 ° C.
- a thermoplastic polyurethane elastomer manufactured by Dainichi Seika Kogyo Co., Ltd .: Resamine P-2283
- lubricant calcium
- Example 1 Comparative Example 1, test pieces having a length of 100 mm, a width of 100 mm, and a thickness of 2 mm were also obtained.
- (A) component and (B) component of following Table 1 were manufactured with the following method.
- ⁇ Flame Retardant UL-94V Test Method> The test piece of 127mm in length, 12.7mm in width and 1.6mm in thickness is kept vertical, the flame of the burner is removed at the lower end after indirect flame for 10 seconds, and the time when the fire ignited on the test piece is extinguished. It was measured. Next, at the same time when the fire was extinguished, the second flame contact was performed for 10 seconds, and the time when the ignited fire was extinguished was measured in the same manner as the first time. Moreover, it was also evaluated at the same time whether or not the cotton under the test piece was ignited by the falling fire type.
- Combustion ranks were assigned according to the UL-94V standard from the first and second combustion times, the presence or absence of cotton ignition, and the like.
- the flame rank is V-0, and the flame retardance decreases as V-1 and V-2 are reached.
- those not corresponding to any of the ranks V-0 to V-2 are NR.
- Example 1 In addition, using the test pieces obtained in Example 1 and Comparative Example 1 having a length of 100 mm, a width of 100 mm, and a thickness of 2 mm, a corn calorimeter (CONEIII manufactured by Toyo Seiki Seisakusho Co., Ltd.) is used based on ISO5660.
- the heat release rate was measured using the following conditions of radiant heat.
- the total heat generation amount (MJ / m 2 ), the maximum heat generation rate (kW / m 2 ), and the maximum heat generation rate duration (second) are shown in Table 1 (radiant heat condition: 50 kW / m 2 ).
- a photograph of the state of formation of the surface expansion layer was taken and the maximum value of the thickness of the surface expansion layer was measured.
- a photograph of the test piece of Example 1 is shown in FIG. 1, and a photograph of the test piece of Comparative Example 1 is shown in FIG. Table 1 shows the result of the maximum thickness.
- Example 1 As shown in Table 1, in the flame retardancy UL-94V test results, all of Examples 1 to 5 were evaluated as V-0. On the other hand, in Comparative Examples 1 to 5, cotton was ignited by dripping, and all were determined to be V-2. Moreover, Example 1 showed the flame retardance outstanding compared with the comparative example 1 also at the point of the total calorific value and the maximum heat generating temperature. Moreover, as shown in Table 1 and FIG. 1, in Example 1, it turns out that sufficient surface expansion layer is formed and the spreading
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Abstract
Description
また本発明の第2の目的は、燃焼時にハロゲン由来の有害なガスを発生せず、優れた難燃性と、樹脂本来の優れた物性を有した成形体を提供することにある。
すなわち本発明は、熱可塑性ポリウレタンエラストマーに対して、
下記(A)成分、(B)成分及び(C)成分を配合してなることを特徴とする難燃性熱可塑性ポリウレタンエラストマー組成物を提供するものである。
(A)成分:下記一般式(1)で表される(ポリ)リン酸塩化合物
(B)成分:下記一般式(3)で表される(ポリ)リン酸塩化合物
(C)成分:二酸化ケイ素
また、ポリカプロラクトンポリオール(PCL)とポリヘキサメチレンカーボネート(PHL)との共重合体であっても良い。
これらの熱可塑性ポリウレタンエラストマー(TPU)は、単独で用いても、組み合わせて用いてもよい。
本発明の(A)成分として用いられる上記一般式(1)で表される(ポリ)リン酸塩化合物は、(ポリ)リン酸とアンモニア又は上記一般式(2)で表されるトリアジン誘導体との塩である。
上記一般式(2)におけるZ1及びZ2で表される炭素原子数1~10の直鎖又は分岐のアルキル基としては、メチル、エチル、プロピル、イソプロピル、ブチル、第二ブチル、第三ブチル、イソブチル、アミル、イソアミル、第三アミル、ヘキシル、シクロヘキシル、ヘプチル、イソヘプチル、第三ヘプチル、n-オクチル、イソオクチル、第三オクチル、2-エチルヘキシル、ノニル、デシル等が挙げられ、炭素原子数1~10の直鎖又は分岐のアルコキシ基としては、これらアルキル基から誘導される基が挙げられる。Z1及びZ2がとりうる-NR5R6基におけるR5及びR6で表される炭素原子数1~6の直鎖又は分岐のアルキル基としては、例えば、上記に挙げたアルキル基のうちの炭素原子数1~6のものが挙げられる。
好ましく使用される(ポリ)リン酸とメラミンとの塩としては、例えば、オルトリン酸メラミン、ピロリン酸メラミン、ポリリン酸メラミン等が挙げられ、これらの中でも、上記一般式(1)におけるnが2、pが2、X1がメラミンであるピロリン酸メラミンが特に好ましい。リン酸とメラミンとの塩は次の方法によって得ることができる。例えばピロリン酸メラミンの場合は、ピロリン酸ナトリウムとメラミンとを任意の反応比率で塩酸を加えて反応させ、水酸化ナトリウムで中和してピロリン酸メラミンを得ることができる。
上記のポリリン酸アンモニウムを主成分とする化合物としては、ポリリン酸アンモニウムを熱硬化性樹脂で被覆若しくはマイクロカプセル化したものや、メラミンモノマーや他の含窒素有機化合物等でポリリン酸アンモニウム表面を被覆したもの、界面活性剤やシリコン処理を行ったもの、ポリリン酸アンモニウムを製造する過程でメラミン等を添加し難溶化したもの等が挙げられる。
(A)成分は2種以上の混合物でもよい。
本発明の(B)成分として用いられる上記一般式(3)で表される(ポリ)リン酸塩化合物は、(ポリ)リン酸とY1で表されるジアミン(〔R1R2N(CH2)mNR3R4〕で表されるジアミン、ピペラジン又はピペラジン環を含むジアミン)との塩である。R1~R4で表される炭素原子数1~5の直鎖若しくは分岐のアルキル基としては、例えば、前記でZ1及びZ2で表されるアルキル基の具体例として挙げたもののうちの炭素原子数1~5のものが挙げられる。
上記一般式(3)におけるY1で表されるジアミンとしては、具体的には、N,N,N',N'-テトラメチルジアミノメタン、エチレンジアミン、N,N'-ジメチルエチレンジアミン、N,N'-ジエチルエチレンジアミン、N,N-ジメチルエチレンジアミン、N,N-ジエチルエチレンジアミン、N,N,N',N'-テトラメチルエチレンジアミン、N,N,N',N'-ジエチルエチレンジアミン、テトラメチレンジアミン、1,2-プロパンジアミン、1,3-プロパンジアミン、テトラメチレンジアミン、ペンタメチレンジアミン、ヘキサメチレンジアミン、1、7-ジアミノへプタン、1,8-ジアミノオクタン、1,9ージアミノノナン、1,10-ジアミノデカン、ピペラジン、trans-2,5-ジメチルピペラジン、1,4-ビス(2-アミノエチル)ピペラジン、1,4-ビス(3-アミノプロピル)ピペラジン等が挙げられ、全て市販品を用いることができる。
(B)成分は2種以上の混合物でもよい。
本発明の(C)成分は、二酸化ケイ素であり、これを配合することによりドリップを防止する効果を発揮する。
二酸化ケイ素の形態は粉末状、顆粒状、グラニュール状いずれでもよく、その種類は特に限定されないが、天然シリカ、合成シリカいずれでもよく、結晶質シリカ、非晶質シリカいずれでもよく、乾式シリカ、フュームドシリカ、フューズドシリカ、溶融シリカ、湿式シリカ、いずれでもよい。また内部に細孔を持つもの(いわゆる孔質ないし多孔質)であっても、細孔を持たないもの(いわゆる無孔質)であってもよい。
また二酸化ケイ素の表面はシランカップリング剤や表面処理剤等で表面処理されていてもよい。
二酸化ケイ素の、市販品としては日本アエロジル(株)製「AEROSIL」、トクヤマ(株)製「レオシール」、「トクシール」、塩野義製薬(株)製「カープレックス」、富士シリシア(株)製「サイリシア」、水澤化学工業(株)製「ミズカシル」等が挙げられる。
(D)成分の酸化亜鉛の配合量は、熱可塑性ポリウレタンエラストマー組成物100質量部に対して、好ましくは0.1~10質量部、より好ましくは0.5~5.0質量部、さらにより好ましくは1.0~3.0質量部である。
前記ペンタエリスリトール及びその縮合物としては、下記一般式(4)で示される化合物が挙げられる。
これら滑剤の配合量は、熱可塑性ポリウレタンエラストマー100質量部に対して0.01~5質量部が好ましく、0.3~2質量部がより好ましい。
上記、無機リン系難燃剤としては、赤リンが挙げられる。
上記、ジアルキルホスフィン酸塩としては、ジエチルホスフィン酸アルミニウム、ジエチルホスフィン酸亜鉛等が挙げられる。
これらリン系酸化防止剤の配合量は、熱可塑性ポリウレタンエラストマー100質量部に対して、0.001~10質量部が好ましく、0.05~5質量部がより好ましい。
これらチオエーテル系酸化防止剤の配合量は、熱可塑性ポリウレタンエラストマー100質量部に対して、0.001~10質量部が好ましく、0.05~5質量部がより好ましい。
これら紫外線吸収剤の配合量は、熱可塑性ポリウレタンエラストマー100質量部に対して、0.001~30質量部が好ましく、0.05~10質量部がより好ましい。
これらヒンダードアミン系光安定剤の配合量は、熱可塑性ポリウレタンエラストマー100質量部に対して、0.001~30質量部が好ましく、0.05~10質量部がより好ましい。
多価カルボン酸エステル系可塑剤の具体例としては、フタル酸ジメチル、フタル酸ジエチル、フタル酸ジブチル、フタル酸ジオクチル、フタル酸ジヘプチル、フタル酸ジベンジル、フタル酸ブチルベンジル等のフタル酸エステル、トリメリット酸トリブチル、トリメリット酸トリオクチル、トリメリット酸トリヘキシル等のトリメリット酸エステル、アジピン酸ジイソデシル、アジピン酸n-オクチル-n-デシル、アジピン酸メチルジグリコールブチルジグリコール、アジピン酸ベンジルメチルジグリコール、アジピン酸ベンジルブチルジグリコール等のアジピン酸エステル、アセチルクエン酸トリエチル、アセチルクエン酸トリブチル等のクエン酸エステル、アゼライン酸ジ-2-エチルヘキシル等のアゼライン酸エステル、セバシン酸ジブチル、及びセバシン酸ジ-2-エチルヘキシル等のセバシン酸エステル等を挙げることができる。
本発明において可塑剤を使用する場合は、1種のみを使用しても、2種以上を併用してもよい。
合成樹脂は、分子量、重合度、密度、軟化点、溶媒への不溶分の割合、立体規則性の程度、触媒残渣の有無、原料となるモノマーの種類や配合比率、重合触媒の種類(例えば、チーグラー触媒、メタロセン触媒等)等に関わらず、使用することができる。
これら合成樹脂の中でも、高密度ポリエチレン(HDPE)、低密度ポリエチレン(LDPE)、線状低密度ポリエチレン(LLDPE)などのエチレン重合体、エチレン-酢酸ビニル共重合体、エチレン-エチルアクリレート共重合体、エチレン-メチルアクリレート共重合体、エチレン-アクリル酸共重合体、エチレン-メタクリル酸共重合体等のエチレン系共重合体が好ましい。
ワンパック化する場合には、各成分を予め各々粉砕してから混合してもよく、又は予め各成分を混合してから粉砕してもよい。熱可塑性ポリウレタンエラストマー以外の樹脂や他の任意成分を配合する場合も同様である。
熱可塑性ポリウレタンエラストマー(大日精化工業(株)製:レザミンP-2283)100質量部に、ステアリン酸カルシウム(滑剤)0.1質量部、テトラキス〔3-(3,5-ジ第三ブチル-4-ヒドロキシフェニル)プロピオン酸メチル〕メタン(フェノール系酸化防止剤)0.1質量部、及びトリス(2,4-ジ-第三ブチルフェニル)ホスファイト(リン系酸化防止剤)0.1質量部とグリセリンモノステアレート0.3質量部(滑剤)、下記表1記載の成分を配合し、次いで200℃で押し出してペレットを製造した。得られたペレットを190℃で射出成型し、長さ127mm、幅12.7mm、厚さ1.6mmの試験片を得た。また実施例1及び比較例1においては、長さ100mm、幅100mm、厚さ2mmの試験片も得た。
〔製造例1〕
(A)成分:ピロリン酸メラミン
ピロリン酸とメラミンを1:2のモル比で反応させて製造した。
(B)成分:ピロリン酸ピペラジン
ピロリン酸とピペラジンを1:1のモル比で反応させて製造した。
長さ127mm、幅12.7mm、厚さ1.6mmの試験片を垂直に保ち、下端にバーナーの火を10秒間接炎させた後で炎を取り除き、試験片に着火した火が消える時間を測定した。次に、火が消えると同時に2回目の接炎を10秒間行ない、1回目と同様にして着火した火が消える時間を測定した。また、落下する火種により試験片の下の綿が着火するか否かについても同時に評価した。
1回目と2回目の燃焼時間、綿着火の有無等からUL-94V規格にしたがって燃焼ランクをつけた。燃焼ランクはV-0が最高のものであり、V-1、V-2となるにしたがって難燃性は低下する。但し、V-0~V-2のランクの何れにも該当しないものはNRとする。
測定後の試験片について、表面膨張層の形成状態の写真を撮影し、また表面膨張層の厚さの最大値を測定した。実施例1の試験片の写真を図1に、比較例1の試験片の写真を図2に示す。また厚さの最大値の結果を表1に示す。
また表1及び図1に示すように、実施例1では、充分な表面膨張層が形成され、分解生成物の拡散や伝熱を抑制できることがわかる。これに対し、比較例1では、表1及び図2に示すように、表面膨張層の形成が不充分であり、分解生成物の拡散や伝熱の抑制に劣ることがわかる。
Claims (6)
- 熱可塑性ポリウレタンエラストマーに対して、
下記(A)成分、(B)成分及び(C)成分を配合してなることを特徴とする難燃性熱可塑性ポリウレタンエラストマー組成物。
(A)成分:下記一般式(1)で表される(ポリ)リン酸塩化合物
(B)成分:下記一般式(3)で表される(ポリ)リン酸塩化合物
(C)成分:二酸化ケイ素
(式中、nは1~100の数を表し、X1はアンモニア又は下記一般式(2)で表されるトリアジン誘導体であり、pは0<p≦n+2を満たす数である。)
(式中、Z1及びZ2は同一でも異なっていてもよく、-NR5R6基〔ここでR5及びR6は同一又は異なって水素原子、炭素原子数1~6の直鎖若しくは分岐のアルキル基若しくはメチロール基を表す〕、水酸基、メルカプト基、炭素原子数1~10の直鎖若しくは分岐のアルキル基、炭素原子数1~10の直鎖若しくは分岐のアルコキシ基、フェニル基及びビニル基からなる群より選ばれる基である。)
(式中、rは1~100を表し、Y1は〔R1R2N(CH2)mNR3R4〕で表されるジアミン、ピペラジン又はピペラジン環を含むジアミンであり、R1、R2、R3及びR4はそれぞれ水素原子、炭素原子数1~5の直鎖若しくは分岐のアルキル基であり、R1、R2、R3及びR4は同一の基であっても異なってもよく、mは1~10の整数であり、qは0<q≦r+2を満たす数である。) - 更に(D)成分として、酸化亜鉛を配合してなる請求項1に記載された難燃性熱可塑性ポリウレタンエラストマー組成物。
- 上記(A)成分として、上記一般式(1)におけるnが2、pが2、X1がメラミン(上記一般式(2)におけるZ1及びZ2が-NH2)であるピロリン酸メラミンを用いる請求項1又は2に記載された難燃性熱可塑性ポリウレタンエラストマー組成物。
- 上記(B)成分として、上記一般式(3)におけるqが1、Y1がピペラジンであるポリリン酸ピペラジンを用いる請求項1~3の何れか1項に記載された難燃性熱可塑性ポリウレタンエラストマー組成物。
- 上記ポリリン酸ピペラジンが、ピロリン酸ピペラジンである請求項4に記載された難燃性熱可塑性ポリウレタンエラストマー組成物。
- 請求項1~5の何れか1項に記載された難燃性熱可塑性ポリウレタンエラストマー組成物から得られる成形体。
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BR112016023206B1 (pt) | 2021-09-08 |
JP2015042730A (ja) | 2015-03-05 |
EP3135729B1 (en) | 2019-12-04 |
KR20160149196A (ko) | 2016-12-27 |
US20170121502A1 (en) | 2017-05-04 |
US9926434B2 (en) | 2018-03-27 |
JP6611706B2 (ja) | 2019-11-27 |
CN106232722A (zh) | 2016-12-14 |
EP3135729A1 (en) | 2017-03-01 |
CN106232722B (zh) | 2019-03-08 |
EP3135729A4 (en) | 2017-11-22 |
BR112016023206A2 (ja) | 2018-05-15 |
JPWO2015162982A1 (ja) | 2017-04-13 |
KR102279250B1 (ko) | 2021-07-19 |
TW201540776A (zh) | 2015-11-01 |
TWI654248B (zh) | 2019-03-21 |
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