WO2009113536A1 - 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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- WO2009113536A1 WO2009113536A1 PCT/JP2009/054541 JP2009054541W WO2009113536A1 WO 2009113536 A1 WO2009113536 A1 WO 2009113536A1 JP 2009054541 W JP2009054541 W JP 2009054541W WO 2009113536 A1 WO2009113536 A1 WO 2009113536A1
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- polyacetal resin
- resin composition
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34922—Melamine; Derivatives thereof
-
- 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
- C08L59/02—Polyacetals containing polyoxymethylene sequences only
Definitions
- the present invention relates to a polyacetal resin composition containing a polyacetal resin, an amine-substituted triazine compound and an aliphatic compound.
- a preferred embodiment of the present invention relates to a polyacetal resin composition that is excellent in creep resistance, exhibits high releasability, and has good thermal stability during kneading or molding.
- Polyacetal resin is an engineering plastic with an excellent balance of mechanical properties (friction resistance / abrasion resistance, chemical resistance, creep resistance, dimensional stability), extremely excellent fatigue resistance, and low water absorption. .
- polyacetal resin has made use of these characteristics to make automobile interior parts, interior parts such as houses (hot water mixer taps, etc.), clothing parts (fasteners, belt buckles, etc.) and building materials (piping, pump parts, etc.), electrical Used in resin parts used for parts (gears, etc.), demand is growing.
- the present invention solves the above-mentioned problems, and polyacetal resin composition with greatly improved creep resistance, releasability and thermal stability without impairing the advantages of polyacetal resin such as high rigidity and excellent moldability It is an object to provide a product and a method for manufacturing the product.
- the present inventors have obtained the above-described conventional polyacetal resin composition comprising a polyacetal resin and a specific amount of an amine-substituted triazine compound and an aliphatic compound. I found that at least one of the problems could be solved. Furthermore, the present invention has found that a polyacetal resin composition in which the total amount of alkali metal and alkaline earth metal in the resin composition is 50 ppm or less is excellent in creep resistance, releasability and thermal stability, and the present invention. Was completed.
- one embodiment of the present invention is a polyacetal resin composition containing (B) and (C) below with respect to (A) 100 parts by weight of a polyacetal resin.
- the amine-substituted triazine compound is melamine, methylolmelamine, benzoguanamine
- a preferred embodiment is at least one selected from the group consisting of water-soluble melamine-formaldehyde resins.
- an embodiment in which the aliphatic compound is ethylene bisstearamide is also preferable.
- Another embodiment of the present invention relates to (B) amine-substituted triazine compound 0.05 to 0.15 part by weight and (C) aliphatic compound 0.10 to 0.20 part by weight with respect to 100 parts by weight of polyacetal resin. Is added, and devolatilized under reduced pressure of 20.7 to 26.7 kPa while being heated and melted in a temperature range of 210 to 230 ° C., to produce a polyacetal resin composition. In the present invention, a mode of degreasing under a reduced pressure of 21.3 kPa is preferable.
- the polyacetal resin composition according to a preferred embodiment of the present invention has greatly improved creep resistance, releasability and thermal stability. Because of such excellent performance, interior parts for automobiles, home interior parts (hot water mixer taps, etc.), clothing parts (fasteners, belt buckles, etc.) and building materials (piping / pump parts, etc.), electrical parts (Gears, etc.), fuel parts and the like can be suitably used.
- the (A) polyacetal resin used in the present invention is a polymer having an acetal structure — (— O—CRH—) n — (wherein R represents a hydrogen atom or an organic group) in a repeating structure.
- the main structural unit is an oxymethylene group (—CH 2 O—) which is a hydrogen atom.
- the polyacetal resin used in the present invention includes a copolymer (block copolymer) or a terpolymer containing one or more repeating structural units other than the oxymethylene group in addition to the acetal homopolymer consisting only of this repeating structure, and further linear. It may have not only a structure but also a branched or crosslinked structure.
- Examples of the structural unit other than the oxymethylene group include an oxyethylene group (—CH 2 CH 2 O—), an oxypropylene group (—CH 2 CH 2 CH 2 O—), and an oxybutylene group (—CH 2 CH 2 CH). 2 CH 2 O—) and the like, and optionally branched oxyalkylene groups having 2 to 10 carbon atoms are mentioned, among which an optionally branched oxyalkylene group having 2 to 4 carbon atoms is preferable.
- An oxyethylene group is preferred.
- the content of such oxyalkylene structural units other than oxymethylene groups is preferably 0.1% by weight or more and 20% by weight or less, more preferably 0.5% by weight or more and 15% or less in the polyacetal resin. % By weight or less.
- the production method of the polyacetal resin is arbitrary, and may be produced by any conventionally known method.
- a method for producing a polyacetal resin having an oxymethylene group and an oxyalkylene group having 2 to 4 carbon atoms as a structural unit an oxymethylene group such as formaldehyde trimer (trioxane) or tetramer (tetraoxane) is used.
- the polyacetal resin used in the present invention is preferably a copolymer of a cyclic oligomer such as trioxane or tetraoxane and ethylene oxide or 1,3-dioxolane, and among them, the copolymer of trioxane and 1,3-dioxolane is preferable. It is preferably a coalescence.
- (B) amine-substituted triazine compound examples include, for example, guanamine, melamine, methylolmelamine, N-butylmelamine, N-phenylmelamine, N, N-diphenylmelamine, N, N-diallylmelamine, N, N ′, N ′′ -triphenylmelamine, N, N ′, N ′′ -trimethylolmelamine, benzoguanamine, 2,4-diamino-6-methyl-sym-triazine, 2,4-diamino-6-butyl-sym- Triazine, 2,4-diamino-6-benzyloxy-sym-triazine, 2,4-diamino-6-butoxy-sym-triazine, 2,4-diamino-6-cyclohexyl-sym-triazine, 2,4-diamino -6-chloro-sy
- melamine methylolmelamine
- benzoguanamine methylolmelamine
- water-soluble melamine-formaldehyde resin are particularly preferable.
- the amount of the amine-substituted triazine compound added and blended is preferably 0.05 to 0.15 parts by weight, more preferably 0.07 parts by weight to 0.12 parts by weight with respect to 100 parts by weight of the polyacetal polymer.
- the (C) aliphatic compound used in the present invention is a compound having an aliphatic chain and not containing an aromatic chain, and the aliphatic chain may be linear, branched or cyclic.
- the aliphatic compound includes a halogen atom, carboxyl group, alkylcarbonyl group, alkoxycarbonyl group, aminocarbonyl group, alkylaminocarbonyl group, hydroxyl group, alkoxy group, cyano group, nitro group, amino group, aminoalkyl group, sulfo group. It may be substituted with a group or the like. Of these substituents, two or more of the same or different substituents may be contained in the molecule.
- Preferred examples include aliphatic hydrocarbons, fatty acid compounds, fatty acid amide compounds, and the like, more preferably fatty acid amide compounds.
- aliphatic hydrocarbon examples include liquid paraffin, montan wax, beeswax, low-polymerized polyethylene, and hydrogenated polybutene.
- fatty acid compound examples include linear saturated fatty acid, cyclic saturated fatty acid, branched saturated fatty acid, unsaturated fatty acid, unsaturated fatty acid having a hydroxyl group, and the like.
- the fatty acid amide compound a compound represented by RCONH 2, methylene bis-amide compound represented by RCONH-CH 2 -NHCOR, or ethylene bisamide compounds are exemplified represented by RCONH-CH 2 CH 2 -NHCOR, with RCOOH And amide compounds obtained from ammonia, methylenediamine, and ethylenediamine, respectively.
- Examples of the carboxylic acid compound represented by RCOOH include linear saturated fatty acids, cyclic saturated fatty acids, branched saturated fatty acids, unsaturated fatty acids, unsaturated fatty acids having a hydroxyl group, and the like.
- Specific examples of the fatty acid amide compound include palmitylamide, stearylamide, oleylamide, methylenebisstearamide, ethylenebisstearamide and the like, and ethylenebisstearamide is more preferable.
- the polyacetal resin composition of the present invention contains the above-mentioned (A), (B), and (C) as essential components, but in addition to the above components, known additions within a range that does not impair the original purpose.
- Agents and / or fillers may be added.
- the additive include a lubricant, an antistatic agent, an ultraviolet absorber, a light stabilizer, and a coloring dye / pigment.
- the filler include glass fiber, glass flake, glass bead, talc, mica, calcium carbonate, potassium titanate whisker, and the like.
- the method for producing the polyacetal resin composition of the present invention comprises a temperature range of 210 to 230 ° C. when mixing and kneading the above-described components (A) to (C) and other components added as necessary. It is characterized by devolatilization under reduced pressure of 20.7 to 26.7 kPa while being heated and melted. The deaeration treatment is particularly preferably performed under a reduced pressure of 21.3 kPa.
- the polyacetal resin for example, with respect to 100 parts by weight of the polyacetal resin, 0.05 to 0.15 parts by weight of (B) amine-substituted triazine compound and (C) 0.10 to 0.20 parts by weight of aliphatic compound, Mix at the same time or in any order, add other resin additives if necessary, then mix with a tumbler-type blender, etc., and melt and knead the resulting mixture in a single or twin screw extruder When extruding into a strand, devolatilization is performed under a reduced pressure of 20.7 to 26.7 kPa (preferably under a reduced pressure of 21.3 kPa) while heating and melting in a temperature range of 210 to 230 ° C. Subsequently, the polyacetal resin composition of a desired composition can be obtained by pelletizing.
- the polyacetal resin composition of the present invention can be molded according to a known polyacetal resin molding method.
- a molded article containing the polyacetal resin composition of the present invention as a material for pellets, round bars, planks, sheets, tubes, various containers, machinery, electricity, automobiles, building materials and other various parts, etc.
- the amount of the other additive is an amount (parts by weight) based on 100 parts by weight of the polyacetal resin obtained from trioxane and 1,3 dioxolane.
- the creep test, fuel resistance, mold contamination, yellow discoloration, and thermal stability were evaluated as follows.
- Fuel (1): Toluene / isooctane 60 wt% / 40 wt%
- Fuel (2): Fuel (1) / Ethanol 70wt% / 30wt% (3) Mold contamination, yellow discoloration Mold contamination was evaluated in 1 to 5 stages as follows, after 400 shots were molded at a cylinder temperature of 200 ° C. and a mold temperature of 35 ° C. As for discoloration, the yellow discoloration degree of a molded piece molded at a cylinder temperature of 240 ° C. and a mold temperature of 80 ° C. was evaluated in 1 to 5 stages as follows. (4) Thermal stability It was made to stay in the molding machine with a cylinder temperature of 240 degree
- Comonomer 1,3 dioxolane (comonomer of (A) polyacetal resin)
- Mx Melamine ((B) amine-substituted triazine compound)
- EBS Ethylene bisstearamide ((C) aliphatic compound)
- St-Ca calcium stearate (additive)
- PEG Polyethylene glycol 20000P (additive)
- PW Paraffin wax (additive)
- Comonomer 1,3 dioxolane (comonomer of (A) polyacetal resin)
- Mx Melamine ((B) amine-substituted triazine compound)
- EBS Ethylene bisstearamide ((C) aliphatic compound)
- St-Ca calcium stearate (additive)
- PEG Polyethylene glycol 20000P (additive)
- PW Paraffin wax (additive)
- the polyacetal resin composition of the present invention includes, for example, automobile interior parts, interior parts such as houses (hot water mixing taps, etc.), clothing parts (fasteners, belt buckles, etc.), building materials (piping, pump parts, etc.), electrical parts, etc. (Gears, etc.), fuel parts, etc. can be suitably used.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
即ち、本発明の一実施形態は、(A)ポリアセタール樹脂100重量部に対して、以下の(B)及び(C)を含有することを特徴とするポリアセタール樹脂組成物である。
(B)アミン置換トリアジン化合物0.05~0.15重量部
(C)脂肪族化合物0.10~0.20重量部
本発明では、上記アミン置換トリアジン化合物が、メラミン、メチロールメラミン、ベンゾグアナミン、および水溶性メラミン-ホルムアルデヒド樹脂からなる群から選ばれた少なくとも1種である態様が好ましい。
また、本発明では、上記脂肪族化合物がエチレンビスステアロアミドである態様も好ましい。
本発明の別の実施形態は、ポリアセタール樹脂100重量部に対して、(B)アミン置換トリアジン化合物0.05~0.15重量部及び(C)脂肪族化合物0.10~0.20重量部を添加し、210~230℃の温度範囲で加熱溶融しながら20.7~26.7kPaの減圧下で脱揮することを特徴とするポリアセタール樹脂組成物の製造方法である。
本発明では、21.3kPaの減圧下で脱脂する態様が好ましい。
本発明に用いる(A)ポリアセタール樹脂は、アセタール構造-(-O-CRH-)n-(但しRは水素原子または有機基を示す。)を繰り返し構造に有する高分子であり、通常はRが水素原子であるオキシメチレン基(-CH2O-)を主たる構成単位とするものである。本発明に用いるポリアセタール樹脂は、この繰り返し構造のみからなるアセタールホモポリマー以外に、前記オキシメチレン基以外の繰り返し構成単位を1種以上含むコポリマー(ブロックコポリマー)やターポリマー等も含み、更には線状構造のみならず分岐、架橋構造を有していてもよい。
前記オキシメチレン基以外の構成単位としては例えば、オキシエチレン基(-CH2CH2O-)、オキシプロピレン基(-CH2CH2CH2O-)、オキシブチレン基(-CH2CH2CH2CH2O-)等の炭素数2以上10以下の、分岐していてもよいオキシアルキレン基が挙げられ、中でも炭素数2以上4以下の分岐していてもよいオキシアルキレン基が好ましく、特にオキシエチレン基が好ましい。またこの様な、オキシメチレン基以外のオキシアルキレン構造単位の含有量としては、ポリアセタール樹脂中において0.1重量%以上20重量%以下であることが好ましく、より好ましくは0.5重量%以上15重量%以下である。
表1及び表2に示す配合量及び種類の、(A)ポリアセタール樹脂、(B)アミン置換トリアジン化合物、(C)脂肪族化合物を混合して、二軸押出機にて、210~230℃の温度範囲で加熱溶融しながら21.3kPaの減圧下で脱揮した後ペレットを調製し、評価を行った。表1及び2に記載された「コモノマー含有量」は、トリオキサン100重量部に対して反応させたコモノマー(1,3ジオキソラン)の量(重量部)である。そして、その他の添加剤の量は、トリオキサンと1,3ジオキソランから得られたポリアセタール樹脂100重量部に対する量(重量部)である。
尚、クリープ試験、耐燃料性、金型汚染、黄変色、および熱安定性は次のようにして評価した。
東洋精機製クリープ試験器を用いて、3mm(D)×4mm(W)×75mm(L)の成形片に80℃、空気中で応力20MPaをかけ、クリープ破断時間を測定した。
(2)耐燃料性
下記燃料で、65℃、2000時間浸漬させたダンベル型成形片をISO527-1,2に従って引っ張り試験を行い、浸漬前後での強度保持率で評価した。
燃料(1):トルエン/イソオクタン=60wt%/40wt%
燃料(2):燃料(1)/エタノール=70wt%/30wt%
(3)金型汚染、黄変色
金型汚染はシリンダー温度200℃、金型温度35℃で400ショット成形後に金型への付着物量を下記のように1~5段階で評価した。
変色はシリンダー温度240℃、金型温度80℃で成形した成形片の黄変色度を下記のように1~5段階で評価した。
(4)熱安定性
シリンダー温度240度の成形機にて滞留させ、成形片表面に発泡跡が見られるまでの時間を評価した。12分刻みで72分まで評価した。
コモノマー:1,3ジオキソラン((A)ポリアセタール樹脂のコモノマー)
Mx :メラミン((B)アミン置換トリアジン化合物)
EBS :エチレンビスステアロアミド((C)脂肪族化合物)
St-Ca:ステアリン酸カルシウム(添加剤)
PEG :ポリエチレングリコール20000P(添加剤)
PW :パラフィンワックス(添加剤)
Claims (7)
- (A)ポリアセタール樹脂100重量部に対して、以下の(B)及び(C)を含有することを特徴とするポリアセタール樹脂組成物。
(B)アミン置換トリアジン化合物0.05~0.15重量部
(C)脂肪族化合物0.10~0.20重量部 - 前記アミン置換トリアジン化合物が、メラミン、メチロールメラミン、ベンゾグアナミン、および水溶性メラミン-ホルムアルデヒド樹脂からなる群から選ばれた少なくとも1種である請求項1に記載のポリアセタール樹脂組成物。
- 前記脂肪族化合物がエチレンビスステアロアミドである請求項1または2に記載のポリアセタール樹脂組成物。
- ポリアセタール樹脂100重量部に対して、(B)アミン置換トリアジン化合物0.05~0.15重量部及び(C)脂肪族化合物0.10~0.20重量部を添加し、210~230℃の温度範囲で加熱溶融しながら20.7~26.7kPaの減圧下で脱揮することを特徴とするポリアセタール樹脂組成物の製造方法。
- 21.3kPaの減圧下で脱脂する請求項4に記載のポリアセタール樹脂組成物の製造方法。
- 前記アミン置換トリアジン化合物が、メラミン、メチロールメラミン、ベンゾグアナミン、および水溶性メラミン-ホルムアルデヒド樹脂からなる群から選ばれた少なくとも1種である請求項4または5に記載のポリアセタール樹脂組成物。
- 前記脂肪族化合物がエチレンビスステアロアミドである請求項4から6のいずれかに記載のポリアセタール樹脂組成物。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP09719403.9A EP2256162B1 (en) | 2008-03-11 | 2009-03-10 | Polyacetal resin composition |
CN200980108118.3A CN101981122B (zh) | 2008-03-11 | 2009-03-10 | 聚缩醛树脂组合物 |
KR1020107022216A KR101677301B1 (ko) | 2008-03-11 | 2009-03-10 | 폴리아세탈 수지 조성물 |
JP2010502829A JP5685940B2 (ja) | 2008-03-11 | 2009-03-10 | ポリアセタール樹脂組成物 |
US12/921,907 US20110184098A1 (en) | 2008-03-11 | 2009-03-10 | Polyacetal resin composition |
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JP2008061666 | 2008-03-11 | ||
JP2008-061666 | 2008-03-11 |
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US (1) | US20110184098A1 (ja) |
EP (1) | EP2256162B1 (ja) |
JP (1) | JP5685940B2 (ja) |
KR (1) | KR101677301B1 (ja) |
CN (1) | CN101981122B (ja) |
WO (1) | WO2009113536A1 (ja) |
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CN102782041A (zh) * | 2010-03-12 | 2012-11-14 | 三菱瓦斯化学株式会社 | 聚缩醛树脂组合物 |
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EP2653497B1 (en) | 2012-04-17 | 2015-01-28 | Ticona GmbH | Weather resistant polyoxymethylene compositions |
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MY198446A (en) * | 2016-05-19 | 2023-08-29 | Mitsubishi Gas Chemical Co | Polyacetal Resin Composition and Method for Producing the same |
WO2018069838A1 (en) | 2016-10-11 | 2018-04-19 | Celanese Sales Germany Gmbh | Wear resistant polymer composition having improved surface appearance |
EP3606998A4 (en) | 2017-04-07 | 2021-02-24 | Ticona LLC | LOW-EMISSION POLYOXYMETHYLENE COMPOSITION |
EP3638735A1 (en) | 2017-06-16 | 2020-04-22 | Celanese Sales Germany GmbH | Reinforced polyoxymethylene composition with low emissions |
JP7550027B2 (ja) * | 2019-11-15 | 2024-09-12 | 旭化成株式会社 | ポリアセタール樹脂組成物及び金属樹脂組成物 |
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- 2009-03-10 KR KR1020107022216A patent/KR101677301B1/ko active IP Right Grant
- 2009-03-10 CN CN200980108118.3A patent/CN101981122B/zh active Active
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- 2009-03-10 US US12/921,907 patent/US20110184098A1/en not_active Abandoned
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CN102782041A (zh) * | 2010-03-12 | 2012-11-14 | 三菱瓦斯化学株式会社 | 聚缩醛树脂组合物 |
CN102782041B (zh) * | 2010-03-12 | 2015-02-11 | 三菱瓦斯化学株式会社 | 聚缩醛树脂组合物 |
Also Published As
Publication number | Publication date |
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JPWO2009113536A1 (ja) | 2011-07-21 |
KR20100134636A (ko) | 2010-12-23 |
US20110184098A1 (en) | 2011-07-28 |
CN101981122B (zh) | 2013-05-15 |
JP5685940B2 (ja) | 2015-03-18 |
EP2256162B1 (en) | 2016-12-28 |
CN101981122A (zh) | 2011-02-23 |
EP2256162A4 (en) | 2013-06-12 |
EP2256162A1 (en) | 2010-12-01 |
KR101677301B1 (ko) | 2016-11-17 |
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