JPS6112742A - Resin composition for exterior material - Google Patents

Resin composition for exterior material

Info

Publication number
JPS6112742A
JPS6112742A JP13263584A JP13263584A JPS6112742A JP S6112742 A JPS6112742 A JP S6112742A JP 13263584 A JP13263584 A JP 13263584A JP 13263584 A JP13263584 A JP 13263584A JP S6112742 A JPS6112742 A JP S6112742A
Authority
JP
Japan
Prior art keywords
ethylene
flow rate
melt flow
weight
density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13263584A
Other languages
Japanese (ja)
Inventor
Takashi Sugimoto
杉本　孝
Yukio Okada
行雄 岡田
Toyoo Kawase
川瀬　豊生
Toshimitsu Matsuoka
俊光 松岡
Yujiro Kawamura
河村　友二郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Mitsubishi Petrochemical Co Ltd
Original Assignee
Nissan Motor Co Ltd
Mitsubishi Petrochemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd, Mitsubishi Petrochemical Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP13263584A priority Critical patent/JPS6112742A/en
Priority to GB08516016A priority patent/GB2161490A/en
Publication of JPS6112742A publication Critical patent/JPS6112742A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers

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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

PURPOSE:To provide the titled composition having excellent impact resistance, moldability and heat-deformation resistance, and suitable for an exterior part, especially the bumper of automobile, by compound a specific propylene-ethylene block copolymer with an ethylene-propylene copolymer rubber, a high-density polyethylene and talc at specific ratios. CONSTITUTION:(A) 62-57(wt.)% propylene-ethylene block copolymer having an ethylene content of 2-3% and a melt flow rate of 40-45g/10min is compounded with (B) 26-28% ethylene-propylene copolymer rubber having an ethylene content of 70-80% and a Mooney viscosity of 55-58, (C) 2-3% high-density polyethylene having a density of 0.955-0.96g/cm<3> and a melt flow rate of 18-22g/ 10min, and (D) 10-12% talc having an average particle diameter of 1.8-2.2mu and a specific surface area of 36,000-42,000cm<2>/g, to obtain a resin composition having a melt flow rate of 13-18g/10min, density of 0.95-0.98g/cm<3>, a flexural modulus of 11,500-14,000kg/cm<2>, a linear expansion coefficient (20-80 deg.C) of 7X 10<-5>-10X10<-5>cm/cm/ deg.C, and a surface gloss of >=55%.

Description

【発明の詳細な説明】 発明の背景 技術分野 本発明は、改良されたポリプロピレン樹脂よりなる、特
に自動車に用いられる、外装部材用樹脂材料に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin material for exterior members, particularly for use in automobiles, made of an improved polypropylene resin.

自動車の軽量化への要請ならびに形状ないし色彩に対す
る自由度の増大に対する要請から、自動車の外装部材の
少なくとも一部を合成樹脂材料で構成することが行なわ
れるようになった。2. Description of the Related Art In response to demands for lighter weight automobiles and greater freedom in terms of shape and color, at least a portion of automobile exterior members have come to be constructed from synthetic resin materials.

このような自動車用外装部材の一例は、パンノソである
。パン・ぐ用合成樹脂材料としては、耐衝撃性が大きい
ばかりでなく強靭であることが要求される。An example of such an exterior member for an automobile is Pannoso. Synthetic resin materials for bread and gaskets are required not only to have high impact resistance but also to be tough.

先行技術 パンｉＲ用材料として上記の特性を持つものとして、ポ
リゾロビレ／樹脂からなるものがある。Prior art Pan iR materials having the above-mentioned properties include those made of polyzorobire/resin.

従来の自動車パンパ用ポリゾロピレン樹脂とししかしな
がら、このような従来のポリゾロピレン樹脂製パン・ぞ
にあっては、耐衝撃性能全重視したため、材料としては
軟質であシすぎかつ線膨張率が大きいので、パンＡ？が
高温環境下（８０℃）に置かれたとき車体との線膨張差
によりパン・ぐが変形しやすく、またその線膨張差を車
体ステイ部でスライドさせて熱膨張を逃がすことはでき
るけれども、この場合にはパンパサイドとフェンダ−と
のクリアランスが一３０’Ｃ〜＋８０℃でｌＯ〜１５　
ｍｍ変動して外観品質を損なう問題点がある。このよう
な問題点を解決すべく使用されている従来のエチレン共
重合ポリプロピレン＋エチレン−プロピレン共重合体ゴ
ム＋高密度ポリエチレン＋タルクの４成分体パン・〈は
、エチレン共重合ポリプロピレンのエチレン含量が高い
ところより曲げ弾性率がまだ充分でなく、またエチレン
−ゾロピレン共重合体ツムが低ムーニーであるところよ
り耐傷性が低くて、塗装した場合に塗膜の付着強度がピ
ーリングで３００〜４００ｇ／ａｍと実用下限にわジ１
そのうえＶＦＲ（メルト・フロー・レート）が低いので
成形加工性が充分でない欠点がある。Conventional polyzolopylene resin is used for automobile bumpers.However, in the case of conventional polyzolopyrene resin pans and grooves, impact resistance performance was emphasized, and the material was too soft and had a high coefficient of linear expansion. A? When placed in a high-temperature environment (80℃), the breadboard tends to deform due to the difference in linear expansion with the car body, and although the thermal expansion can be released by sliding the linear expansion difference with the car body stay, In this case, the clearance between the pampa side and the fender is lO~15 at 130'C~+80℃.
There is a problem that the appearance quality is deteriorated due to the variation in mm. In order to solve these problems, the conventional four-component bread consisting of ethylene copolymer polypropylene + ethylene-propylene copolymer rubber + high density polyethylene + talc is used. The flexural modulus is still insufficient compared to the high flexural modulus, and the scratch resistance is lower than the low moony of the ethylene-zolopyrene copolymer, and when painted, the adhesion strength of the coating is 300 to 400 g/am after peeling. and practical lower limit 1
Furthermore, since the VFR (melt flow rate) is low, moldability is not sufficient.

発明の概要 要旨 本発明は上記の問題に解決を与えることを目的とし、（
ａ）低エチレン含量のエチレン共重合ポリプロピレンと
（ｂ）低〜中粘度のエチレン−プロピレン共重合体ゴム
と（Ｃ）高密度ポリエチレンと（ｄ）微粒タルクとの必
須四成分よりなる組成物によってこの目的を達成しよう
とするものである。SUMMARY OF THE INVENTION The present invention aims to provide a solution to the above problems.
This is achieved by a composition consisting of four essential components: a) ethylene copolymerized polypropylene with a low ethylene content, (b) ethylene-propylene copolymer rubber with a low to medium viscosity, (C) high-density polyethylene, and (d) finely divided talc. It is an attempt to achieve a goal.

従って、本発明による一Ｉｎ）十外装部材用樹脂組成物
は、下記（、）〜（ｄ）の各成分からなり、メルト・フ
ロー・レート【３〜１８ｇ／ｌｏ分、密度０．９５０〜
０．９８０　ｇ　／　ａｍ３、曲げ弾性率１１，５００
〜１４．０００ｋｇ／Ｃｍ２．２０〜８０℃間の線膨張
係数７ＸＩＯ−”〜１０　Ｘ　１０−”　ｃｍ　／　ａ
ｍ　７℃およびＪＩＳ−Ｚ　８７４１の６００−６０’
法による表面光沢度５５チ以上であること、を特徴とす
るものでおる。Therefore, the resin composition for exterior members according to the present invention consists of the following components (,) to (d), has a melt flow rate of 3 to 18 g/lo, and a density of 0.950 to
0.980 g/am3, flexural modulus 11,500
~14.000kg/Cm2. Linear expansion coefficient between 20 and 80℃ 7XIO-" ~10 X 10-" cm/a
m 7℃ and JIS-Z 8741 600-60'
It is characterized by having a surface gloss level of 55 inches or more according to the method.

（、）　　エチレン含量２〜３重量％、メルト・フロー
・レート４０−４５ エチレンブロック共重合体６２〜５７重量％、（ｂ）　
　エチレン含量７０〜８０重量％、ムーニー粘１＋４ １１ｊ　ＭＬ　　　　５５〜５８のエチレン−プロビレ
１００℃ ン共重合ゴム妬〜あ重量％、 （ｃ）密度０．９５５〜０．９６０　ｇ　／　ｃｍ”、
メルト・フロー・レート１８勺２２ チレン２〜３重量％、 （ｄ）　　平均粒径１．８　〜２．２μ、比表面４ａ６
，ｏｏ。(,) Ethylene content 2-3% by weight, melt flow rate 40-45 ethylene block copolymer 62-57% by weight, (b)
Ethylene content 70-80% by weight, Mooney viscosity 1+4 11j ML 55-58 ethylene-propylene 100°C copolymer rubber % by weight, (c) Density 0.955-0.960 g/cm",
Melt flow rate 18 22% tyrene 2-3% by weight, (d) Average particle size 1.8-2.2μ, specific surface 4a6
,oo.

〜４２　、　０００　０ｍ２／　ｇのタル２１０〜１２
重量％。~42,0000m2/g of barrel 210~12
weight%.

効果 本発明樹脂組成物は上記したような限足された成分およ
び組成のものであるが、このような樹脂組成物から回動
車パ／パを製作すれば、耐衝本性を保持しながら、外観
、品質、成形加工性、塗装性能の点で満足が得られ、ま
た耐熱剛性の向上および熱膨張量の低減によって熱変形
の防止およびパンＡ伸縮代が抑えらる。Effects Although the resin composition of the present invention has the limited ingredients and composition as described above, if a rotary wheel pa/pa is manufactured from such a resin composition, the appearance will be improved while maintaining its impact resistance properties. Satisfaction is achieved in terms of quality, moldability, and coating performance, and thermal deformation is prevented and bread A expansion/contraction allowance is suppressed by improving heat-resistant rigidity and reducing the amount of thermal expansion.

発明の詳細な説明 樹脂組成物 本発明による樹脂組成物は、前記必須四成分からなるも
のである。DETAILED DESCRIPTION OF THE INVENTION Resin Composition The resin composition according to the present invention comprises the above-mentioned four essential components.

各成分の相関 パンパの高温環境下での膨張変形および熱膨張でのフェ
ンダ−とのクリアランス変動を防止ないし軽減するには
、材料の対応策としては曲げ弾性率を向上させかつ線膨
張率を低減することが必要である。Correlation of each component In order to prevent or reduce the expansion deformation of the bumper in a high-temperature environment and the clearance fluctuation with the fender due to thermal expansion, the material countermeasures are to improve the bending elastic modulus and reduce the linear expansion coefficient. It is necessary to.

そのためには、無機質フィラーをポリプロピレンに充填
することで上記の両性質を達成できるが、この目的には
タルクが一番適している。To this end, both of the above properties can be achieved by filling polypropylene with an inorganic filler, and talc is most suitable for this purpose.

しかし、無機質フィラー充填ポリプロピレンは耐衝撃性
が大巾に低下してパンパ桐料としての適性を失ってしま
う。そこで、耐衝本性全必要な水準へ引き上げるため、
ゴム質の添加が必要となる。However, the impact resistance of polypropylene filled with inorganic fillers is greatly reduced, making it unsuitable for use as pampa paulownia material. Therefore, in order to raise the impact resistance to the required level,
Addition of rubber is required.

ゴム質の添加は弾性率の低下を伴なうので、タルクとゴ
ム質の各々の効果を注目しながら、最適添加量を決定す
る。Since the addition of rubbery substances is accompanied by a decrease in the elastic modulus, the optimum amount to be added is determined while paying attention to the respective effects of talc and rubbery substances.

一方、ゴム質の添加は組成体表面全柔らかくして、耐傷
性を大巾に引き下げ、組成物の成形加工後の外観にフロ
ーマーク、スティックスリップを発生しやくして外観品
質を損なわせるため、その欠点を軽減しうる他の成分（
タルク、ポリプロピレン）の選択が必要であり、♂ム質
自身も同観点からの選択も重要である。そのうえ、ゴム
質は、パン／ｅ品買ヲ一層向上しうる光沢度の高さ、塗
装後の塗膜の付着強度にも支配的であり、この方面の品
質にも気全配りながら選択する必要がある。On the other hand, the addition of rubber softens the entire surface of the composition, greatly lowering its scratch resistance, making it more likely to cause flow marks and stick-slips on the appearance of the composition after it is molded, impairing its appearance quality. Other ingredients that can alleviate the drawbacks (
talc, polypropylene) is necessary, and the selection of the male mucilage itself from the same point of view is also important. Furthermore, the rubber quality is also dominant in terms of high gloss, which can further improve the quality of bread/e-products, and the adhesion strength of the paint film after painting, so it is necessary to pay careful attention to quality in this area when selecting. There is.

高密度ポリエチレンは、これを添加することによって、
生成組成物の光沢ヲ一層向上する作用がある。By adding this to high-density polyethylene,
It has the effect of further improving the gloss of the resulting composition.

各成分 本発明組成物は成分（、）〜（ｄ）からなるが、各成分
の詳細は下記の通りである。なお、以゛Ｆにおいて「係
」は、特記ない限り，「重量％」である。Each component The composition of the present invention consists of components (,) to (d), and the details of each component are as follows. In addition, in the following F, "related" means "% by weight" unless otherwise specified.

（ａ）　　４リプロピレンハ、ゾロピレン−エチレンブ
ロック共重合のものが適している。ホモポリプロピレン
またはランダム共重合体は、耐衝撃性の向上が大きくな
いので不適である。(a) 4-ripropylene, a zolopylene-ethylene block copolymer is suitable. Homopolypropylene or random copolymers are not suitable because they do not significantly improve impact resistance.

本発明組成物中での共重合ポリゾロビレ／（共重合ｐｐ
）含量は、６２〜５７％であることが必要である。５７
チ未満では曲げ弾性率の低下、耐衝撃性能の低下、塗膜
付着強度の低下に到る。６２チヲ超えると、耐衝撃性能
の低下、曲げ弾性率の低下が起る。Copolymerized polyzorobire/(copolymerized pp
) The content should be 62-57%. 57
If it is less than 1, the flexural modulus of elasticity will decrease, impact resistance will decrease, and coating film adhesion strength will decrease. If it exceeds 62 inches, impact resistance performance and flexural modulus will decrease.

この共重合ＰＰはエチレン含量が２〜３％であることが
必要である。２チ未満では耐衝撃性能の向上が小さく、
３％超えると弾性率の向上が小さくて耐傷性および光沢
度の低下につながる。この共重合ＰＰはＭＦＲが４０〜
４５ｇ／ｌｏ分であることが必要である。ＶＦＲが４ｏ
ｇ／１０分未満では成形加工性が劣り、４５ｇ／１０分
超えると耐衝撃性が低下する。This copolymerized PP must have an ethylene content of 2 to 3%. If it is less than 2 inches, the improvement in impact resistance will be small.
If it exceeds 3%, the improvement in elastic modulus is small, leading to a decrease in scratch resistance and gloss. This copolymerized PP has an MFR of 40~
It is necessary that the amount is 45 g/lo min. VFR is 4o
If it is less than 45 g/10 minutes, the moldability will be poor, and if it exceeds 45 g/10 minutes, the impact resistance will be reduced.

（ｂ）　　−？ム質は、エチレン−プロ♂レン共重合体
ザム（ＢＰＲ）が適しており、ＥＰＤＭ（エチレン−ゾ
ロピレン−非共後ジエン共重合体ゴム）、インプレンゴ
ム、ブチルゴム、ブタジェンげム等の合成ゴムは、成形
外観に７０−マークの発生、耐衝撃向上が小さい等で、
適性が小さい。(b) −? Ethylene-propylene copolymer ZAM (BPR) is suitable for the rubber quality, and synthetic rubbers such as EPDM (ethylene-zolopyrene-non-copolymer rubber), imprene rubber, butyl rubber, and butadiene rubber are suitable. , 70-marks appeared on the molded appearance, impact resistance improvement was small, etc.
Small aptitude.

本発明組成物中のＥＰＲ含量は、３〜２８％であること
が必要である。ＥＰＲが２６％未満でば、耐衝撃性能お
よび塗膜付着強度が低下する。一方、公チ超えると、成
形外観にフローマークの発生、耐衝撃性能の低下に到る
。The EPR content in the composition of the present invention is required to be 3-28%. If the EPR is less than 26%, impact resistance performance and coating film adhesion strength will decrease. On the other hand, if the temperature is exceeded, flow marks will appear on the molded appearance and impact resistance will deteriorate.

このＥＰＲはエチレン含量が特定のものでなければなら
ない。ＥＰＲ中のエチレン含量が７０チ未満では耐傷性
が低下し、一方８咋超えると耐衝撃性が低下する。This EPR must have a specific ethylene content. If the ethylene content in the EPR is less than 70 grams, the scratch resistance will decrease, while if it exceeds 8 grams, the impact resistance will decrease.

このＥＰＲはムーニー粘度も特定のものである必１＋４ 要があって、ムーニー粘度ＭＬ　　　が５５未満で１０
０℃ は塗膜付着強度がデラミネーションにより低下し、１＋
４ 耐傷性も低下する。一方、ＭＬ　　　が５８を超え１０
（Ｆ′Ｃ ると、成形外観にフローマークが発生し、また光沢の低
下が顕著になる。ムーニー粘度は複数ＥＰＲの平均値で
も構わない。This EPR must also have a specific Mooney viscosity (1+4), and if the Mooney viscosity ML is less than 55, it is 10
At 0℃, the coating film adhesion strength decreases due to delamination, and the temperature is 1+.
4 Scratch resistance also decreases. On the other hand, ML exceeds 58 and 10
(If F'C is used, flow marks will occur on the molded appearance and the gloss will be significantly lowered.The Mooney viscosity may be the average value of multiple EPRs.

（ｃ）高密度ぼりエチレンは、密度が０．９５５〜０　
、９６０　ｇ　／　ａｍのものである。(c) High-density ethylene has a density of 0.955 to 0.
, 960 g/am.

この高密度ポリエチレンは、本発明組成物中に２チ未満
では光沢向上が充分でなく、一方３％を超えると生成組
成物の塗膜付着強度が低下する。If less than 2% of this high-density polyethylene is present in the composition of the present invention, the gloss will not be improved sufficiently, while if it exceeds 3%, the coating film adhesion strength of the resulting composition will be reduced.

この高密度ポリエチレンはＶＦＲが特定のものであって
、ＭＦＲが１８　ｇ　／　１０分未満では光沢が低下し
、成形品にフローマークが発生する。一方、ＭＦＲが２
２　ｇ　／　ｌｏ分を超えるものは、耐衝撃性能が低下
する。This high-density polyethylene has a specific VFR, and if the MFR is less than 18 g/10 minutes, the gloss will decrease and flow marks will occur on the molded product. On the other hand, MFR is 2
If it exceeds 2 g/lo minute, the impact resistance performance will deteriorate.

（ａ）　　タルクは、平均粒径１．８μ未満では分散に
高混練を要し、一方２．２μを超えると耐衝撃性能の低
下、曲げ弾性率向上効果の低下、耐、偏性が低下する。(a) When the average particle size of talc is less than 1.8μ, high kneading is required for dispersion, while when it exceeds 2.2μ, the impact resistance performance decreases, the effect of improving flexural modulus decreases, and the resistance and polarity decrease. .

タルクばまた、比表面積が３６　、０００〜４２＋ＯＱ
Ｏａｍ２／ｇのものでなければならない。Talc has a specific surface area of 36,000~42+OQ
Must be Oam2/g.

タルクの充填量が１０チ未満では曲げ弾性率が低下し、
線膨張係数の低減も少ない。一方、１２％超えると、耐
衝撃性能の低下および成形外観の不良に到る。If the filling amount of talc is less than 10 inches, the flexural modulus decreases,
The reduction in linear expansion coefficient is also small. On the other hand, if it exceeds 12%, it will lead to a decrease in impact resistance and a poor molded appearance.

（ｅ）　　所望成分 本発明樹脂組成物は上記必須成分（ａ）〜（ｄ）からな
るが、この組成物は本質的には熱可塑性樹脂組成物であ
るので、熱可塑性樹脂組成物に慣用されているところに
従って必要に応じて、酸化防止剤、紫外線吸収剤、造核
剤、顔料、等全添加してもよい。(e) Desired Components The resin composition of the present invention consists of the above-mentioned essential components (a) to (d), but since this composition is essentially a thermoplastic resin composition, it is not commonly used as a thermoplastic resin composition. Antioxidants, ultraviolet absorbers, nucleating agents, pigments, etc. may all be added as required according to the situation.

組成物の製造 本発明組成物は、上記成分を均一に混合することにより
、好ましくは樹脂ないしゴム成分の溶融を伴なう態様に
より、製造することができる。Production of Composition The composition of the present invention can be produced by uniformly mixing the above components, preferably by melting the resin or rubber component.

各成分を均一に混合する方法として、既存の二軸式混線
押出機によるのが最適であるが、単軸押出様を使用する
こともできる。刀−混線物は、ペレットの形で得ること
がふつうである。As a method for uniformly mixing each component, it is optimal to use an existing twin-screw mixed screw extruder, but a single-screw extrusion system can also be used. The sword-mixer is usually obtained in the form of pellets.

本発明組成物の物性 本発明組成物は、上記必須成分（ａ）〜（ｄ）の諸物性
全規定範囲内で適当に選んで、下記の物性値が実現され
るように構成したものである。Physical properties of the composition of the present invention The composition of the present invention is constructed so that the physical properties of the above-mentioned essential components (a) to (d) are appropriately selected within the specified range to achieve the following physical property values. .

メルト・フロー・レート　１３〜１８ｇ／１０分密度　
　　　０．９５０〜０．９８０ｇ／ａｍ３曲げ弾性率　
　　　　　１１＋５００〜１４，０００ｋｇ／ａｍ”線
膨張係数（２０〜８０℃間） ７×１ｃｒ５−１０刈σ５ｃｒｒｙ’ｃｍ／’Ｃ９［ｉ
沢ｉ　（ＪＩＳ−２８７４１〕６００−６０°法による
）５５％以上 自動車外装部材の製作 自動車外装部材、たとえば、ｚンノク、全本発明樹脂組
成吻から製作するには、この種樹脂材料からこの糧部材
を製作するのに慣用されている方法によればよい。Melt flow rate 13-18g/10min Density
0.950-0.980g/am3 Flexural modulus
11+500~14,000kg/am" Linear expansion coefficient (between 20~80℃) 7x1cr5-10 σ5crry'cm/'C9[i
55% or more (according to JIS-28741 600-60° method) Production of automobile exterior parts In order to manufacture automobile exterior parts, for example, ZUNNOKU, from the resin composition of the present invention, it is necessary to use this material from this kind of resin material. Any method commonly used for manufacturing the member may be used.

たとえば、一般に、パン・ぞの成形は、射出成形法、ス
タンピング法、等が適している。For example, injection molding method, stamping method, etc. are generally suitable for molding breads and grooves.

でき上ったパンパは、使用樹脂組成物に固有の色彩のも
のとして使用することもできるし、適当な溶剤たとえば
１，１．１−トリクロルエタン蒸気での洗滌後に塗装す
るか、低温プラズマ処理をして、ウレタン系塗料で塗装
してもよい。The resulting pampa can be used in a color specific to the resin composition used, or it can be painted after washing with a suitable solvent such as 1,1,1-trichloroethane vapor, or treated with a low-temperature plasma. Then, it may be painted with urethane paint.

実験例 第２表は、実施例および比較例に用いた樹脂組成物の組
成を示すものである。これらの組成物の物性は第３表に
示す通りである。Experimental Examples Table 2 shows the compositions of the resin compositions used in Examples and Comparative Examples. The physical properties of these compositions are shown in Table 3.

矢１　第２表の実施例および比較例の組成物には酸化防
止剤〔ｎ〜オクタデシル−β−（４′−ヒドロキシ−３
’、５’−ジ−ｔ−ブチルフェノール）プロピオネート
〕、紫外線吸収剤〔ビス（２，２，６，６−チトラメチ
ルビペリジル）セパケート〕、カーボンブラックが各々
０．６部、０．３部、０．５部（いずれも重量部）が外
敵で添加されている。Arrow 1 The compositions of Examples and Comparative Examples in Table 2 contain an antioxidant [n~octadecyl-β-(4'-hydroxy-3
',5'-di-t-butylphenol) propionate], ultraviolet absorber [bis(2,2,6,6-titramethylbiperidyl)sepacate], and carbon black, 0.6 parts and 0.3 parts, respectively. , 0.5 parts (all parts by weight) are added as foreign substances.

黄２ＭＬ１＋４ １００℃ 餐３　比表面積は、平均粒径２．０μのタルクが４０　
＋０００　ａｍ　／　ｇ　、平均粒径７μのタルクが条
測定法 （１）Ｍ　Ｆ　ＲＪＩＳ　Ｋ７２１０準拠（ＰＰは２３
０°、）ＬＤ／ＰＥは１９０℃）（２）密　度　　　Ｊ
ＩＳ　Ｋ７１１２準拠（３）曲げ弾性率　ＪＩＳ　Ｋ７
２０３準拠（４）線膨張係数　Ａ８ＴＭ−Ｄ６９６準拠
（テストピース形状 ４Ｘ１２．７Ｘ　１００ｍｍ　） （５）光沢度　　　ＪＩＳ　ｚ８７４１準拠（６）アイ
ゾツト衝撃Ｉ　　Ｋ７１１０　　ｚ（７）タルク平均粒
径　液相沈降方式の光透過法で測定した粒度分布の累積
分布曲線に おける５０％点での粒径値をいう。Yellow 2ML1+4 100℃ Sake 3 The specific surface area of talc with an average particle size of 2.0μ is 40
+000 am/g, talc with an average particle size of 7μ is measured by the strip measurement method (1) MFRJIS K7210 (PP is 23
0°,) LD/PE is 190°C) (2) Density J
Based on IS K7112 (3) Flexural modulus JIS K7
203 compliant (4) Linear expansion coefficient compliant with A8TM-D696 (test piece shape 4 x 12.7 x 100 mm) (5) Glossiness JIS z8741 compliant (6) Izod impact I K7110 z (7) Talc average particle size Liquid phase precipitation method light It refers to the particle size value at the 50% point in the cumulative distribution curve of particle size distribution measured by a transmission method.

（８）タルク比表面積　恒圧通気式比表面積測定装置で
測定した値をいう。(8) Talc specific surface area This refers to the value measured using a constant pressure aeration type specific surface area measuring device.

（９）塗膜ビール試験 （１）塗料及び塗膜 プライマー：日本ビーケミカル社ＲＢ２９１を５μ トラフ：日本ヘイント社フレキセン １０１を１００μ （２）焼付条件 プライマー塗装後　９０℃２０分 トップ　　　＃　　　１２０℃３０分 （３）塗膜ビール法：塗膜中１０　ｍｍ　ｋ　２０　ｍ
ｍ　７分で一１８０°方向にひきはがす(9) Paint film beer test (1) Paint and paint film primer: Nippon B Chemical Co., Ltd. RB291 5μ Trough: Nippon Haint Co., Ltd. Flexene 101 100μ (2) Baking conditions After primer coating 90°C 20 minutes Top # 120°C 30 minutes (3) Coating film beer method: 10 mm k 20 m in the coating film
m Peel off in 1180° direction in 7 minutes

Claims (1)

【特許請求の範囲】 下記（ａ）〜（ｄ）の各成分からなり、メルト・フロー
・レート１３〜１８ｇ／１０分、密度０．９５０〜０．
９８０ｇ／ｃｍ＾３、曲げ弾性率１１，５００〜１４，
０００ｋｇ／ｃｍ＾２、２０〜８０℃間の線膨張係数７
×１０＾−＾５〜１０×１０＾−＾５ｃｍ／ｃｍ／℃お
よびＪＩＳ−Ｚ８７４１の６０°−６０°法による表面
光沢度５５％以上であることを特徴とする、外装部材用
樹脂組成物。 （ａ）エチレン含量２〜３重量％、メルト・フロー・レ
ート４０〜４５ｇ／１０分のプロピレン−エチレンブロ
ック共重合体６２〜５７重量％、（ｂ）エチレン含量７
０〜８０重量％、ムーニー粘度ＭＬ＾１＾＋＾４＿１＿
０＿０＿℃５５〜５８のエチレン−プロピレン共重合ゴ
ム２６〜２８重量％、 （ｃ）密度０．９５５〜０．９６０ｇ／ｃｍ＾３、メル
ト・フロー・レート１８〜２２ｇ／１０分の高密度ポリ
エチレン２〜３重量％、 （ｄ）平均粉径１．８〜２．２μ、比表面積３６，００
０〜４２，０００ｃｍ＾２／ｇのタルク１０〜１２重量
％。[Claims] Consisting of each of the following components (a) to (d), with a melt flow rate of 13 to 18 g/10 minutes, and a density of 0.950 to 0.
980g/cm^3, flexural modulus 11,500~14,
000kg/cm^2, linear expansion coefficient between 20 and 80℃ 7
A resin composition for an exterior member, characterized by having a surface gloss of 55% or more according to the 60°-60° method of JIS-Z8741 at . (a) Ethylene content 2-3% by weight, melt flow rate 40-45 g/10 min propylene-ethylene block copolymer 62-57% by weight, (b) Ethylene content 7
0 to 80% by weight, Mooney viscosity ML^1^+^4_1_
26-28% by weight of ethylene-propylene copolymer rubber at 0_0_℃55-58, (c) High-density polyethylene 2 with density 0.955-0.960 g/cm^3, melt flow rate 18-22 g/10 min. ~3% by weight, (d) Average powder diameter 1.8-2.2μ, specific surface area 36,00
10-12% by weight of talc of 0-42,000 cm^2/g.
JP13263584A 1984-06-27 1984-06-27 Resin composition for exterior material Pending JPS6112742A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13263584A JPS6112742A (en) 1984-06-27 1984-06-27 Resin composition for exterior material
GB08516016A GB2161490A (en) 1984-06-27 1985-06-25 Propylene-ethylene copolymer base resin composition for molding purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13263584A JPS6112742A (en) 1984-06-27 1984-06-27 Resin composition for exterior material

Publications (1)

Publication Number Publication Date
JPS6112742A true JPS6112742A (en) 1986-01-21

Family

ID=15085935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13263584A Pending JPS6112742A (en) 1984-06-27 1984-06-27 Resin composition for exterior material

Country Status (2)

Country Link
JP (1) JPS6112742A (en)
GB (1) GB2161490A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0245552A (en) * 1988-08-08 1990-02-15 Mitsubishi Petrochem Co Ltd Automotive exterior member
JPH055051A (en) * 1991-01-25 1993-01-14 Mitsubishi Petrochem Co Ltd Thermoplastic polymer composition
EP0692505A2 (en) 1994-07-14 1996-01-17 Mitsubishi Chemical Corporation Process for procucing propylene block copolymers
EP0697435A1 (en) 1994-07-07 1996-02-21 Toyota Jidosha Kabushiki Kaisha Polypropylene resin composition for car upholstery
KR20240033549A (en) 2022-09-05 2024-03-12 정성재 Online start-up support system and its operation method
KR20240033574A (en) 2022-09-05 2024-03-12 정성재 Market information provision system and method for starting a business
KR20240033578A (en) 2022-09-05 2024-03-12 정성재 Integrated innovative start-up platform system
KR20240033575A (en) 2022-09-05 2024-03-12 정성재 Startup matching support service system
KR20240070154A (en) 2022-11-14 2024-05-21 정성재 Polypropylene resin composition for automobile interior
KR20240070168A (en) 2022-11-14 2024-05-21 정성재 Polypropylene resin composition with excellent paintability

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JP2618735B2 (en) * 1990-04-27 1997-06-11 豊田合成株式会社 Polypropylene resin composition
JP3014724B2 (en) * 1990-06-27 2000-02-28 日産自動車株式会社 Injection molding
KR970015655A (en) * 1995-09-06 1997-04-28 전성원 Polypropylene Bumper Cover Composition
BR9910759A (en) * 1998-05-28 2001-02-13 Dsm Nv Polymer composition containing a propylene block copolymer
GB2349447B (en) * 1999-04-30 2003-07-09 Birkbys Plastics Ltd A control pedal assembly
CN103153573B (en) * 2010-10-01 2016-06-15 旭化成化学株式会社 The shock-resistant injection-molded article of high clarity of non-application and manufacture method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0245552A (en) * 1988-08-08 1990-02-15 Mitsubishi Petrochem Co Ltd Automotive exterior member
JPH055051A (en) * 1991-01-25 1993-01-14 Mitsubishi Petrochem Co Ltd Thermoplastic polymer composition
EP0697435A1 (en) 1994-07-07 1996-02-21 Toyota Jidosha Kabushiki Kaisha Polypropylene resin composition for car upholstery
US5750612A (en) * 1994-07-07 1998-05-12 Toyota Jidosha Kabushiki Kaisha Polypropylene resin composition for car interior fittings
EP0692505A2 (en) 1994-07-14 1996-01-17 Mitsubishi Chemical Corporation Process for procucing propylene block copolymers
KR20240033549A (en) 2022-09-05 2024-03-12 정성재 Online start-up support system and its operation method
KR20240033574A (en) 2022-09-05 2024-03-12 정성재 Market information provision system and method for starting a business
KR20240033578A (en) 2022-09-05 2024-03-12 정성재 Integrated innovative start-up platform system
KR20240033575A (en) 2022-09-05 2024-03-12 정성재 Startup matching support service system
KR20240070154A (en) 2022-11-14 2024-05-21 정성재 Polypropylene resin composition for automobile interior
KR20240070168A (en) 2022-11-14 2024-05-21 정성재 Polypropylene resin composition with excellent paintability

Also Published As

Publication number Publication date
GB8516016D0 (en) 1985-07-31
GB2161490A (en) 1986-01-15

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