JP2558130B2 - Polyolefin resin composition - Google Patents
Polyolefin resin compositionInfo
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- JP2558130B2 JP2558130B2 JP62326236A JP32623687A JP2558130B2 JP 2558130 B2 JP2558130 B2 JP 2558130B2 JP 62326236 A JP62326236 A JP 62326236A JP 32623687 A JP32623687 A JP 32623687A JP 2558130 B2 JP2558130 B2 JP 2558130B2
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- polyolefin resin
- inorganic filler
- resin composition
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はポリオレフイン樹脂組成物に関する。さらに
詳しくはポリオレフイン樹脂に無機充填剤、特定構造の
環状リン化合物および脂肪族金属塩もしくは特定構造を
有するアルキルリン酸金属塩のそれぞれ特定量を配合し
てなるポリオレフイン樹脂組成物に関する。TECHNICAL FIELD The present invention relates to a polyolefin resin composition. More specifically, it relates to a polyolefin resin composition obtained by mixing a polyolefin resin with a specific amount of an inorganic filler, a cyclic phosphorus compound having a specific structure, and an aliphatic metal salt or a metal alkylphosphate having a specific structure.
無機充填剤入りポリオレフイン樹脂組成分は剛性、耐
熱性、寸法安定性に優れているため、射出成形分野、押
出成形分野、真空（圧空）成形分野で各種の成形品の製
造に用いられている。Since the polyolefin resin composition containing an inorganic filler is excellent in rigidity, heat resistance and dimensional stability, it is used for manufacturing various molded articles in the fields of injection molding, extrusion molding and vacuum (pressure) molding.
（従来の技術） 無機充填剤入りポリオレフイン樹脂組成物は、剛性、
耐熱性、寸法安定性に優れるものの耐衝撃性、引張伸度
が低下するといつた欠点を有しており、この耐衝撃性お
よび引張伸度を改良する方法として、エチレン−プロピ
レンラバー（ERR）やエチレン−プロピレン−ジエンタ
−ポリマーなどのゴム状物質を添加する方法が一般に知
られている。しかしながらゴム状物質を添加すると衝撃
強度および引張伸度は著しく改良されるものの逆に剛性
や耐熱性が低下するといつた矛盾点がある。また通常無
機充填剤入りポリオレフイン樹脂組成物には安定剤とし
てチオエーテル系酸化防止剤、フエノール系酸化防止剤
および中和剤、顔料分散剤として金属セツケン等を添加
した配合処方がよく用いられているが、この配合処方で
は該配合処方の組成物を用いて成形したときの該成形品
の柔軟性が低下し、たとえば引張伸度、衝撃強度の低下
などの問題がある。(Prior Art) A polyolefin resin composition containing an inorganic filler has rigidity,
Although it has excellent heat resistance and dimensional stability, it has some drawbacks when impact resistance and tensile elongation decrease, and as a method of improving this impact resistance and tensile elongation, ethylene-propylene rubber (ERR) and The method of adding a rubber-like substance such as ethylene-propylene-diene-polymer is generally known. However, when a rubber-like substance is added, impact strength and tensile elongation are remarkably improved, but on the contrary, there is a contradiction in that rigidity and heat resistance are lowered. In addition, a thioether-based antioxidant, a phenol-based antioxidant and a neutralizing agent as a stabilizer and a compounding recipe in which metal soap and the like are added as a pigment dispersant are often used for a polyolefin resin composition containing an inorganic filler. In this compounded formulation, the flexibility of the molded product when molded using the composition of the compounded formulation is lowered, and there is a problem such as a decrease in tensile elongation and impact strength.
（発明が解決しようとする問題点） 本発明者らは無機充填剤入りポリオレフイン樹脂組成
物にかかわる上述の問題点すなわち、該組成物を成形品
としたときの該成形品の剛性、耐熱性、寸法安定性を損
なうことなく、耐衝撃性および引張伸度を改善すること
のできる無機充填剤入りポリオレフイン樹脂組成物を得
るべく鋭意研究した。その結果、ポリオレフイン樹脂に
無機充填剤、特製構造を有する環状リン化合物および脂
肪酸金属塩のそれぞれ特定量を配合してなる組成物が上
述の問題点を解決できることを見い出し、この知見にも
とづき本発明を完成した。(Problems to be Solved by the Invention) The inventors of the present invention have the above-mentioned problems associated with the inorganic filler-containing polyolefin resin composition, namely, the rigidity and heat resistance of the molded article when the composition is used as a molded article. Intensive research was conducted to obtain an inorganic filler-containing polyolefin resin composition capable of improving impact resistance and tensile elongation without impairing dimensional stability. As a result, it has been found that a composition obtained by blending a polyolefin resin with an inorganic filler, a specific amount of a cyclic phosphorus compound having a special structure and a fatty acid metal salt can solve the above problems, and the present invention is based on this finding. completed.
以上の記述から明らかなように本発明は成形品とした
際に該成形品の剛性、耐熱性、寸法安定性を損なうこと
なく、耐衝撃性および引張伸度を改善することのできる
ポリオレフイン樹脂組成物を提供することである。As is clear from the above description, the present invention is a polyolefin resin composition capable of improving impact resistance and tensile elongation without deteriorating the rigidity, heat resistance and dimensional stability of the molded product. It is to provide things.
（問題点を解決するための手段） 本発明は下記の構造を有する。(Means for Solving Problems) The present invention has the following structure.
（１）（ａ）ポリオレフイン樹脂 70〜90重量部 （ｂ）無機充填剤 30〜10重量部 （ｃ）上記（ａ）および（ｂ）の合計100重量部に対し
て下記一般式〔Ｉ〕で示される環状リン化合物0.05〜1.
0重量部および下記一般式〔II〕で示される脂肪酸金属
塩を0.1〜1.0重量部配合してなるポリオレフイン樹脂組
成物。(1) (a) Polyolefin resin 70 to 90 parts by weight (b) Inorganic filler 30 to 10 parts by weight (c) The total amount of 100 parts by weight of the above (a) and (b) is represented by the following general formula [I]. Cyclic phosphorus compounds shown 0.05-1.
A polyolefin resin composition comprising 0 part by weight and 0.1 to 1.0 part by weight of a fatty acid metal salt represented by the following general formula [II].
（ただし、R1、R2、R3はそれぞれ炭素数１〜６の異種も
しくは同種のアルキル基または水素原子を示す。） R4COOM1 〔II〕 （M1はCa、Mg、Al、Zn,PbもしくはSnを示す。R4は炭素
数16〜22の異種もしくは同種のアルキル基を示す） 本発明に用いられるポリオレフイン樹脂としてはエチ
レン、プロピレン、ブテン等のα−オレフインの結晶性
単独重合体、該α−オレフインと他のα−オレフインと
の結晶性ランダム重合体、結晶性ブロツク重合体があげ
られる。 (However, R 1 , R 2 and R 3 each represent a different or the same alkyl group having 1 to 6 carbon atoms or a hydrogen atom.) R 4 COOM 1 [II] (M 1 is Ca, Mg, Al, Zn , Pb or Sn. R 4 represents a different or the same type of alkyl group having 16 to 22 carbon atoms) The polyolefin resin used in the present invention is a crystalline homopolymer of α-olefin such as ethylene, propylene and butene. , A crystalline random polymer of the α-olefin and another α-olefin, and a crystalline block polymer.
特に結晶性プロピレン単独重合体、結晶性エチレン−
プロピレンランダム重合体、結晶性プロピレン−ヘキセ
ン−ブテン３元素重合体などのポリプロピレン樹脂が好
ましい。Especially crystalline propylene homopolymer, crystalline ethylene-
A polypropylene resin such as a propylene random polymer or a crystalline propylene-hexene-butene ternary polymer is preferable.
また、無機充填剤としては炭配カルシウム、タルク、
マイカ、クレー、水酸化マグネシウム、ウオラストナイ
ト、ケイ酸カルシウム、ガラス繊維等があげられるが、
平均粒子径２〜10μのタルクが好ましい。Also, as the inorganic filler, calcium carbonate, talc,
Examples include mica, clay, magnesium hydroxide, wollastonite, calcium silicate, glass fiber, etc.
Talc having an average particle size of 2 to 10 µ is preferable.
該無機充填剤の配合割合はポリオレフイン樹脂70〜90
重量部に無機充填剤30〜10重量部で合計100重量部とな
る配合割合である。The compounding ratio of the inorganic filler is 70 to 90 for the polyolefin resin.
The compounding ratio is 30 to 10 parts by weight of the inorganic filler in 100 parts by weight in total.
該配合割合が30重量部より多いと、得られた組成物を
用いて成形したときの該成形品の対衝撃性および引張伸
度が低下し、また10重量部より少ないと剛性、寸法安定
性の改善が達成されないので好ましくない。When the compounding ratio is more than 30 parts by weight, impact resistance and tensile elongation of the molded product when molded by using the obtained composition decrease, and when less than 10 parts by weight, rigidity and dimensional stability It is not preferable because the improvement of is not achieved.
本発明で用いられる一般式〔Ｉ〕で示される環状リン
化合物としては9,10−ジ−ヒドロ−９−オキサ−10−フ
オスフアフエナンスレン−10−オキサイド（以下、HCA
−Ｐという。）があり、また一般式〔II〕で示される脂
肪酸金属塩としてはステアリン酸亜鉛、マグネシウムス
テアレート、カルシウムステアレート、アルミニウムス
テアレート、ステアリン酸バリウム等である。また一般
式〔III〕または〔IV〕で示される化合物の混合物であ
るアルキルリン酸金属塩はステアリン酸金属塩（金属と
してZn、Ca、Mg、SrもしくはBa）、ラウリルリン酸金属
塩（金属としてZn、Ca、Mg、SrもしくはBa）、２−エチ
ルヘキシルリン酸金属塩（金属としてZn、Ca、Mg、Srも
しくはBa）等があげられる。Examples of the cyclic phosphorus compound represented by the general formula [I] used in the present invention include 9,10-di-hydro-9-oxa-10-phosphaphenanthrene-10-oxide (hereinafter referred to as HCA).
-P. ) And the fatty acid metal salt represented by the general formula [II] includes zinc stearate, magnesium stearate, calcium stearate, aluminum stearate, barium stearate and the like. In addition, the alkylphosphoric acid metal salt which is a mixture of the compounds represented by the general formula [III] or [IV] is stearic acid metal salt (Zn, Ca, Mg, Sr or Ba as a metal), laurylphosphoric acid metal salt (as a metal Zn, Ca, Mg, Sr or Ba), 2-ethylhexyl phosphate metal salt (as a metal, Zn, Ca, Mg, Sr or Ba) and the like.
また無機充填剤入りポリオレフイン樹脂100重量部に
対して、一般式〔Ｉ〕で示される環状リン化合物の添加
割合は0.05〜1.0重量部、好ましくは0.05〜0.5重量部で
ある。0.05重量部未満では耐衝撃性および引張伸度の改
善効果が充分発揮されず、他方１重量部を超えてもかま
わないが、それ以上の上述の効果の向上が期待できず実
際的でない。Further, the addition ratio of the cyclic phosphorus compound represented by the general formula [I] is 0.05 to 1.0 part by weight, preferably 0.05 to 0.5 part by weight, based on 100 parts by weight of the inorganic filler-containing polyolefin resin. If it is less than 0.05 parts by weight, the effect of improving impact resistance and tensile elongation will not be sufficiently exerted, while if it exceeds 1 part by weight, further improvement of the above-mentioned effects cannot be expected and it is not practical.
また前記〔II〕で示される脂肪酸金属塩の添加割合は
0.1〜1.0重量部、好ましくは0.1〜0.5重量部である。Further, the addition ratio of the fatty acid metal salt represented by the above [II] is
The amount is 0.1 to 1.0 part by weight, preferably 0.1 to 0.5 part by weight.
また添加量においてそれぞれ0.1重量部未満では耐衝
撃性および引張進度の改善効果が充分発揮されず、他方
１重量部を超えてもかまわないがそれ以上の上述の効果
の向上が期待できず、実際的でないばかりか不経済であ
る。さらに本発明にあつては通常無機充填剤入りポリオ
レフイン樹脂に添加される添加剤、例えばフエノール
系、チオエーテル系および亜リン酸エステル系などの酸
化防止剤、光安定剤、帯電防止剤、顔料、重金属不活性
化剤（銅害防止剤）、難燃剤、中和剤を併用することが
できる。If the addition amount is less than 0.1 parts by weight, the effect of improving impact resistance and tensile progress is not sufficiently exerted, while if it exceeds 1 part by weight, further improvement of the above effects cannot be expected. Not only is it uneconomical Further, in the present invention, additives usually added to polyolefin resin containing an inorganic filler, for example, antioxidants such as phenol type, thioether type and phosphite type antioxidants, light stabilizers, antistatic agents, pigments, heavy metals An inactivating agent (copper damage inhibitor), a flame retardant, and a neutralizing agent can be used in combination.
本発明の組成物の製造はポリオレフイン樹脂に無機充
填剤および通常用いられる上述の添加剤および前記一般
式〔Ｉ〕で示される環状リン化合物および前記一般式
〔II〕で示される脂肪酸金属塩のそれぞれ所定量を撹拌
混合装置に入れ１〜10分間撹拌混合したのち、該混合物
を押出機にて溶融混練しペレツト化することにより行う
ことができる。The composition of the present invention is produced by adding an inorganic filler to the polyolefin resin and the above-mentioned additives usually used, the cyclic phosphorus compound represented by the general formula [I] and the fatty acid metal salt represented by the general formula [II]. It can be carried out by placing a predetermined amount in a stirring and mixing apparatus and stirring and mixing for 1 to 10 minutes, and then melt-kneading the mixture with an extruder to form a pellet.
混合装置はヘンシエルミキサー（商品名）スーパーミ
キサーなどの高速撹拌機付混合機、リボンブレンダー、
タンブラーミキサー、バンバリーミキサーなどの通常の
混合装置を使用すればよく、溶融混練は通常の単軸押出
機または２軸押出機などが使われる。The mixing device is a Hensiel mixer (trade name) super mixer, a mixer with a high-speed agitator, a ribbon blender,
An ordinary mixing device such as a tumbler mixer or a Banbury mixer may be used, and an ordinary single-screw extruder or twin-screw extruder is used for melt kneading.
溶融混練温度は190〜300℃、好ましくは200〜260℃で
ある。The melt-kneading temperature is 190 to 300 ° C, preferably 200 to 260 ° C.
かくして得られた無機充填剤入りポリオレフイン組成
物のペレツトから所定の試験片を成形し本発明の組成物
を評価した。A predetermined test piece was molded from the thus obtained pellet of the polyolefin composition containing an inorganic filler, and the composition of the present invention was evaluated.
試験片の評価方法としては、引張伸度の測定（JIS
Ｋ 7113）と、アイゾツト衝撃強度の測定（JIS Ｋ 7
110）（ノツチ付）を行つた。As a method of evaluating the test piece, measurement of tensile elongation (JIS
K 7113) and measurement of Izod impact strength (JIS K 7
110) (with a notch).
（実施例） 以下、実施例および比較例によつて本発明を具体的に
説明するが、本発明は、それによつて範囲を限定される
ものではない。(Examples) Hereinafter, the present invention will be described specifically with reference to Examples and Comparative Examples, but the scope of the present invention is not limited thereby.
実施例１〜７、比較例１〜３ 実施例１〜５として、ポリオレフイン樹脂としてメル
トフローレート9.8g/10分（230℃における荷重2.16kgを
加えて場合の10分間の溶融樹脂の吐出量）のプロピレン
単独重合体80重量部に平均粒子径６〜８μのタルク20重
量部の合計100重量部に、後述の第１表に記載の環状リ
ン化合物としてHCA−Ｐを0.05〜0.5重量部および脂肪酸
金属塩としてステアリン酸亜鉛をそれぞれ0.1〜0.5重量
部またはその他の添加剤とし2,5−ジ−ｔ−ブチル−Ｐ
−クレゾール0.05重量部、テトラキス〔メチル−３−
（3,5−ジ−ｔ−ブチルヒドロキシフエニル）プロピオ
ネート〕メタン0.1重量部、ジミリスチルチオプロピオ
ネート0.05重量部を添加してヘンシエルミキサーで３分
間撹拌混合したのち、該混合物を口径30mmの２軸押出機
で溶融混練温度250℃に溶融混練しペレタイズしてペレ
ツトを得た。Examples 1 to 7 and Comparative Examples 1 to 3 As Examples 1 to 5, as a polyolefin resin, a melt flow rate of 9.8 g / 10 minutes (a discharge amount of the molten resin for 10 minutes when a load of 2.16 kg at 230 ° C. is applied). Of propylene homopolymer of 80 parts by weight to 20 parts by weight of talc having an average particle size of 6 to 8 μm in a total of 100 parts by weight, 0.05 to 0.5 parts by weight of HCA-P and a fatty acid as a cyclic phosphorus compound described in Table 1 below. 0.1-0.5 parts by weight of zinc stearate as a metal salt or 2,5-di-t-butyl-P as other additives
-Cresol 0.05 part by weight, tetrakis [methyl-3-
(3,5-Di-t-butylhydroxyphenyl) propionate] Methane (0.1 parts by weight) and dimyristylthiopropionate (0.05 parts by weight) were added, and the mixture was stirred and mixed with a Hensiel mixer for 3 minutes. Was melt-kneaded at a temperature of 250 ° C. and pelletized to obtain a pellet.
また実施例６、７として、ポリオレフイン樹脂および
無機充填剤の添加量を実施例１〜５と同じくし、一般式
〔Ｉ〕で示される環状リン化合物としてHCA−Ｐの添加
量を0.2重量部とし、また脂肪酸金属塩のマグネシウム
ステアレートおよびカルシウムステアレートをそれぞれ
0.2重量部または0.3重量部併用しその他の添加剤を実施
例１〜５と同じくし、実施例１〜５に準拠してペレツト
を得た。Further, in Examples 6 and 7, the amounts of the polyolefin resin and the inorganic filler added were the same as in Examples 1 to 5, and the amount of HCA-P as the cyclic phosphorus compound represented by the general formula [I] was 0.2 parts by weight. , And fatty acid metal salts of magnesium stearate and calcium stearate, respectively
Pellets were obtained in the same manner as in Examples 1 to 5 except that 0.2 part by weight or 0.3 part by weight was used in combination with other additives.
また、比較例１〜３として、実施例１〜５で用いたと
同様のプロピレン単独重合体80重量部に平均粒子径６〜
８μのタルク20重量部の合計100重量部に、比較例１は
一般式〔Ｉ〕で示される環状リン化合物としてHCA−Ｐ
を0.2重量部添加して、比較例２はステアリン酸亜鉛を
0.2重量部添加して、比較例３はHCA−Ｐを0.2重量部と
ステアリン酸亜鉛を0.05重量部添加する以外は、実施例
１〜５に準拠してペレツトを得た。Further, as Comparative Examples 1 to 3, 80 parts by weight of the same propylene homopolymer as used in Examples 1 to 5 had an average particle size of 6 to
In 20 parts by weight of talc of 8μ, a total of 100 parts by weight, Comparative Example 1 was prepared by using HCA-P as a cyclic phosphorus compound represented by the general formula [I].
Was added in an amount of 0.2 parts by weight, and in Comparative Example 2, zinc stearate was added.
In Comparative Example 3, 0.2 parts by weight was added, and 0.2 parts by weight of HCA-P and 0.05 parts by weight of zinc stearate were added, and pellets were obtained according to Examples 1 to 5.
実施各例および比較各例で得られたペレツトを射出成
形機にかけ、250℃の樹脂温で所定の試験片を成形し、
該試験片を用いて引張伸度およびアイゾツト衝撃強度の
測定を行つた。その結果を第１表に示した。The pellets obtained in each of the examples and comparative examples were applied to an injection molding machine to mold a predetermined test piece at a resin temperature of 250 ° C.,
Using the test piece, tensile elongation and Izod impact strength were measured. The results are shown in Table 1.
第１表からわかるように、HCA−Ｐを0.2重量部とステ
アリン酸亜鉛をそれぞれ0.1、0.2、0.5重量部添加併用
した実施例１〜３は、比較例１にくらべて引張伸度で約
２倍から５倍、アイゾツト衝撃強度で1.3倍〜1.5倍強向
上しており、本発明の効果が確認された。 As can be seen from Table 1, Examples 1 to 3 in which 0.2 parts by weight of HCA-P and 0.1, 0.2, and 0.5 parts by weight of zinc stearate were added and used, respectively, have a tensile elongation of about 2 as compared with Comparative Example 1. It was confirmed that the effect of the present invention was improved by a factor of 5 to 5 and an Izod impact strength of 1.3 to 1.5.
また、実施例２、４、５は比較例２と同量のステアリ
ン酸亜鉛を添加しHCA−Ｐをそれぞれ0.2、0.05、0.5重
量部併用した場合であるが、おのおの併用したことで比
較例２にくらべて引張伸度で５倍強から３倍弱まで向上
しており、またアイゾツト衝撃強度においても1.3倍強
向上していることがわかる。Further, Examples 2, 4, and 5 are cases where the same amount of zinc stearate as in Comparative Example 2 was added and HCA-P was used in combination with 0.2, 0.05, and 0.5 parts by weight, respectively. It can be seen that the tensile elongation has improved from more than 5 times to less than 3 times, and the Izod impact strength has also improved more than 1.3 times.
HCA−Ｐとステアリン酸亜鉛の併用径でステアリン酸
亜鉛を0.1重量部以上添加併用した実施例１〜５は比較
例３にくらべて引張伸度およびアイゾツト衝撃強度の改
善が顕著であることがわかる。It can be seen that in Examples 1 to 5 in which 0.1 parts by weight or more of zinc stearate was added and used in combination with HCA-P and zinc stearate, the tensile elongation and the Izod impact strength were significantly improved as compared with Comparative Example 3. .
実施例６、７はHCA−Ｐの添加量0.2重量部にマグネシ
ウムステアレート0.2重量部およびカルシウムステアレ
ート0.3重量部併用した場合であるがその効果は実施例
２、３と比べても引張伸度およびアイゾツト衝撃強度に
おいてステアリン酸亜鉛−併用系とほぼ同等の効果が認
められる。In Examples 6 and 7, 0.2 parts by weight of HCA-P was used in combination with 0.2 parts by weight of magnesium stearate and 0.3 parts by weight of calcium stearate. Also, the effect similar to that of the zinc stearate-combined system is recognized in the Izod impact strength.
（発明の効果） 本発明の組成物は引張伸度およびアイゾツト衝撃強度
に優れており、射出成形分野、押出成形分野、真空（圧
空）成形分野などの各種成形分野で各種の成形品の製造
に好適に用いることができる。(Effects of the Invention) The composition of the present invention is excellent in tensile elongation and Izod impact strength, and is suitable for the production of various molded articles in various molding fields such as the injection molding field, extrusion molding field and vacuum (pressure) molding field. It can be preferably used.
Claims (1)
て下記一般式［Ｉ］で示される環状リン化合物0.05〜1.
0重量部および下記一般式［II］で示される脂肪酸金属
塩を0.1〜1.0重量部配合してなるポリオレフイン樹脂組
成物。 （ただし、R1、R2、R3はそれぞれ炭素数１〜６の異種も
しくは同種のアルキル基または水素原子を示す） R4COOM1 ［II］ （M1はCa、Mg、Al、Zn,PbもしくはSnを示す。R4は炭素
数16〜22の異種もしくは同種のアルキル基を示す）(A) 70 to 90 parts by weight of polyolefin resin (b) 30 to 10 parts by weight of inorganic filler (c) 100 parts by weight of the above (a) and (b) in total, ] The cyclic phosphorus compound shown by 0.05-1.
A polyolefin resin composition comprising 0 part by weight and 0.1 to 1.0 part by weight of a fatty acid metal salt represented by the following general formula [II]. (However, R 1 , R 2 , and R 3 each represent a different or same alkyl group having 1 to 6 carbon atoms or a hydrogen atom.) R 4 COOM 1 [II] (M 1 is Ca, Mg, Al, Zn, Represents Pb or Sn. R 4 represents an alkyl group having 16 to 22 carbon atoms which is different or the same)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62326236A JP2558130B2 (en) | 1987-12-23 | 1987-12-23 | Polyolefin resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62326236A JP2558130B2 (en) | 1987-12-23 | 1987-12-23 | Polyolefin resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0222349A JPH0222349A (en) | 1990-01-25 |
| JP2558130B2 true JP2558130B2 (en) | 1996-11-27 |
Family
ID=18185509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62326236A Expired - Lifetime JP2558130B2 (en) | 1987-12-23 | 1987-12-23 | Polyolefin resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558130B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11127595A (en) * | 1997-08-11 | 1999-05-11 | Seiko Epson Corp | Electronic equipment |
| US6262554B1 (en) | 1998-09-22 | 2001-07-17 | Seiko Epson Corporation | Electronic device and method of controlling the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6243442A (en) * | 1985-08-21 | 1987-02-25 | Adeka Argus Chem Co Ltd | Polyolefin resin composition |
-
1987
- 1987-12-23 JP JP62326236A patent/JP2558130B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0222349A (en) | 1990-01-25 |
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