본 발명은 고유동성, 내충격성 내열성등이 우수한 올레핀계 수지 조성물의 제조방법에 관한 것이다.The present invention relates to a method for producing an olefin resin composition excellent in high fluidity, impact resistance and heat resistance.
올레핀계 고무와 결정성 폴리프로필렌수지(이하 PP로 약칭)를 주원료로 하는 올레핀계 수지 조성물은 비중이 작고 내열성, 내후성 및 기계적 강도가 우수하며 가격이 싸기 때문에 자동차 외장부품 및 내장부품으로 많이 사용되고 있다.Olefin-based resin compositions containing olefinic rubber and crystalline polypropylene resin (hereinafter abbreviated as PP) as the main raw materials are frequently used as automotive exterior parts and interior parts because of their low specific gravity, excellent heat resistance, weather resistance, mechanical strength, and low cost. .
일반적으로 다량의 올레핀계 고무 성분을 PP에 용융 혼합시키면 유동성이 매우 나쁘게 되어 대형제품의 사출시 성형성이 좋지 않으며 후로우마크가 발생하게 된다.In general, when a large amount of olefinic rubber components are melt-mixed in PP, the fluidity becomes very poor, resulting in poor moldability during injection of a large product, and a blow mark is generated.
또한 고무성분을 비교적 적게하여 PP에 용융 혼합시키면 유동성은 개선되나 저온 충격강도, 신율등 제반물성이 저하된다.In addition, when the rubber component is relatively small and melt mixed with PP, fluidity is improved, but general physical properties such as low temperature impact strength and elongation are lowered.
본 발명의 주요 목적은 대형제품의 사출 성형시 문제가 되는 유동성을 크게 개선시키면서 저온 내충격성, 인장강도, 신율 및 내열성등 제반물성을 크게 향상시키는 것이다.The main object of the present invention is to significantly improve various physical properties such as low temperature impact resistance, tensile strength, elongation and heat resistance while greatly improving fluidity which is a problem in injection molding of large products.
일반적으로 유동성을 증진시키는 방법으로서 고유동성 PP를 사용하는 경우와 미네랄오일을 첨가하는 방법이 있는데 유동성 차이가 큰 원료를 사용함으로서 기인하는 성형품 표면에 후로우마크가 생기는 이상 현상이 발생하는 경우가 있다. 또한 미네랄오일을 다량 첨가하는 경우 제품의 내열성이 크게 손상되어 열변형성이 저하된다.Generally, high fluidity PP is used and mineral oil is added as a method of improving fluidity. An abnormal phenomenon may occur in which a blow mark is formed on the surface of a molded product caused by using a material having a large fluidity difference. . In addition, when a large amount of mineral oil is added, the heat resistance of the product is greatly impaired, and thus the heat deformation is lowered.
공지의 방법으로 일본 특개소 제 56-15740는 결정성 PP호모 폴리머의 일부를 올레핀계 고무 및 프로세스오일과 용융 혼합시킬때 유기 과산화물을 첨가하여 열처리한 후 얻어진 부분가교 조성물을 다시 나머지 결정성 PP호모 폴리머와 용융 혼합하는 방법으로 유동성, 충격강도등 기계적 강도가 낮으며 후로우마크가 발생되는 문제가 있다. 또한 일본 특개소 제 58-25342호는 PP, 올레핀계 고무 및 프로세스오일을 용융 혼합시킨 후 생성된 펠렛과 유기과산화물을 혼합하는 방법으로서 유동성은 해결되나 저온 충격강도, 신율등 제반물성이 불량하게 되며 후로우마크가 발생하는 등 성형성이 나쁘다.In a known method, Japanese Patent Application Laid-Open No. 56-15740 discloses that a partially crosslinked composition obtained after heat treatment by adding an organic peroxide when melt-mixing a part of a crystalline PP homopolymer with an olefinic rubber and a process oil is again subjected to the remaining crystalline PP homopolymer. The method of melt mixing with the polymer has a low mechanical strength, such as fluidity, impact strength, there is a problem that occurs a blow mark. In addition, Japanese Patent Application Laid-Open No. 58-25342 is a method of mixing the resulting pellets with organic peroxide after melting and mixing PP, olefin-based rubber and process oil, but the fluidity is solved, but the physical properties such as low temperature impact strength and elongation are poor. The moldability is bad, such as a flow mark.
본 발명자들은 상기와 같은 문제점을 해결하기 위하여 가압형 반바리니더등을 사용하는 1차 공정에서 PP와 고무를 미리 부분가교 시킨 후, 압출기등을 사용하는 2차 공정에서는 유동성을 증진시킬 수 있도록 PP와 1차 생성물을 혼합시킬때 유기과산화물을 재첨가한 결과 용융 혼합되는 올레핀계 고무에 의한 유동성손상을 크게 개선하면서 제반 사출성형성을 향상시키고 저온 충격강도등을 비롯한 기계적강도가 월등히 증가된다는 것을 알게되어 본 발명을 완성하게 된 것이다.In order to solve the problems described above, the inventors of the present invention partially cross-link PP and rubber in a first step using a pressurized half-barrier, etc., and then improve PP in a second step using an extruder. As a result of re-adding the organic peroxide when mixing with the primary product, it was found that the fluid damage caused by the melt-mixed olefin-based rubber was greatly improved, thereby improving the overall injection moldability and increasing the mechanical strength including the low temperature impact strength. It is to complete the present invention.
또한 본 발명자들은 1차와 2차 공정에서 다관능기모노머와 같은 가교조제를 사용하면 PP와 올레핀계 고무사이에 결합반응으로 인한 제반물성 상승현상이 나타나는 것을 알아냈다.In addition, the present inventors have found that the use of a crosslinking aid such as a polyfunctional monomer in the first and second processes results in an overall increase in physical properties due to the coupling reaction between PP and the olefinic rubber.
즉 본 발명은 다음과 같다.That is, the present invention is as follows.
결정성 PP5-40중량부, 올레핀계 고무 60-95중량부, 유기과산화물 0.01-5중량부 및 프로세스오일 1-30중량부를 용융 혼합시켜 부분가교시킨 후 압출장치에서 유기과산화물 0.01-5중량부, 결정성 PP60-400중량부를 투입하여 열처리하며 압출하는 것을 특징으로 하는 올레핀계 수지 조성물의 제조방법.5-5 parts by weight of crystalline PP5, 60-95 parts by weight of olefinic rubber, 0.01-5 parts by weight of organic peroxide and 1-30 parts by weight of process oil are partially crosslinked by melt mixing, and then 0.01-5 parts by weight of organic peroxide in an extrusion apparatus, Method for producing an olefin resin composition, characterized in that the heat treatment by extrusion of crystalline PP60-400 parts by weight.
또한 유기과산화물과 함께 다관능기모노머와 같은 가교조제를 0.01-5중량부 투입하여 용융 브렌딩하면 저온 충격강도, 내열성, 인장파단강도, 신율등의 물성증진 효과를 얻을 수 있다.In addition, when blended with 0.01-5 parts by weight of a crosslinking aid, such as a polyfunctional monomer, together with the organic peroxide, it is possible to obtain physical properties such as low temperature impact strength, heat resistance, tensile strength at break, and elongation.
본 발명을 상세히 설명을 하면 다음과 같다.The present invention will be described in detail as follows.
가열가능한 가압형 반바리니더, 롤밀 등 고점도수지 혼합 용융 믹서를 사용하여 180-230℃정도에서 올레핀계 고무와 결정성 PP, 유기과산화물, 미네랄오일 그리고 다관능기모노머를 약 10-15분간 혼련하여 부분가교시킨후 펠렛타이저에서 펠렛으로 만든다. 이때 혼합효과가 좋기 때문에 소량의 안료, 안정제, 충진제등 비교적 불활성인 첨가제를 첨가하여도 무방하다.Mixing of olefinic rubber, crystalline PP, organic peroxide, mineral oil, and polyfunctional monomer at about 180-230 ℃ using high viscosity resin mixed melt mixer such as heat pressurized half-barliner, roll mill, etc. After crosslinking, the pellets are pelleted in a pelletizer. At this time, since the mixing effect is good, a small amount of a relatively inert additive such as a pigment, a stabilizer, and a filler may be added.
상기 부분가교된 1차 생성물을 유기과산화물, 결정성 PP, 다관능기모노머 등을 헨셀믹서 또는 텀물러믹서등에서 약 5-10분간 드라이브렌딩한다.The partially crosslinked primary product is subjected to drive blending of an organic peroxide, crystalline PP, polyfunctional monomer, and the like in a Henschel mixer or Tummul mixer for about 5-10 minutes.
이 혼합물을 약 170-260℃정도로 가열된 싱글 또는 트윈스크류형 압출기, 코-니더등의 높은 전단응력을 유발시킬 수 있는 연속 혼련장치에서 압출하여 펠렛으로 만들면 유기과산화물등에 의하여 PP와 올레핀계 고무가 변성되어진 올레핀계 특수 내출격성수지가 연속적으로 얻어진다.When the mixture is extruded and pelletized in a continuous kneading apparatus capable of causing high shear stress such as a single or twin screw extruder or co-kneader heated to about 170-260 ° C., PP and olefin rubbers are formed by organic peroxides. Modified olefin-based special scramble resistant resins are obtained continuously.
본 발명에 사용된 성분에 대하여 자세한 설명을 하면 결정성 PP수지로서는 고분자량의 열가소성 PP수지가 사용될 수 있는데 호모폴리머 또는 다른 올레핀계 모노머와의 코폴리머들도 포함된다.Detailed description of the components used in the present invention as a crystalline PP resin may be a high molecular weight thermoplastic PP resin, including copolymers with homopolymers or other olefinic monomers.
이의 예로는 에틸렌, 프로필렌, 부텐-1, 펜텐-1, 4메틸-펜텐-1, 헥센-1 등과의 일반적인 올레핀계 폴리머 제조방법에 의하여 코폴리머화 시킨것 등을 들 수 있다. 이들 중에서 이소택틱 또는 신디오택틱 폴리프로필렌과 에틸프로필렌 블록 또는 랜덤코폴리머가 가장 바람직하다.Examples thereof include those copolymerized by a general olefin polymer production method such as ethylene, propylene, butene-1, pentene-1, 4methyl-pentene-1, hexene-1 and the like. Of these, isotactic or syndiotactic polypropylene and ethylpropylene block or random copolymer are most preferred.
올레핀계 고무로서는 무정형으로서 2종 또는 그 이상의 모노올레핀들과 공중합되어진 랜덤코폴리머가 사용될 수 있는데 에틸렌과 프로필렌을 주성분으로하며 제 3 의 모노올레핀을 공중합시킨 에틸렌프로필렌 모노머가 사용될 수 있으며, 불포화기능을 부여하기 위하여 디시클로펜타디엔, 1,4-헥사디엔, 메틸렌 노보넨, 에틸리덴 노보덴, 프로페닐 노보넨, 시클로엑사디엔 등이 도입된 에틸렌 프로필렌 디엔 모노머(이하 EPDM이라함)을 사용할 수 있다.As the olefinic rubber, a random copolymer copolymerized with two or more monoolefins may be used as an amorphous, but an ethylene propylene monomer copolymerized with ethylene and propylene as a main component and copolymerized with a third monoolefin may be used. Ethylene propylene diene monomer (hereinafter referred to as EPDM) introduced with dicyclopentadiene, 1,4-hexadiene, methylene norbornene, ethylidene nobodene, propenyl norbornene, cycloexadiene, etc. have.
프로세스오일로서는 아로마틱계, 나프텐계 및 파라핀계오일이 사용될 수 있다.As process oils, aromatic, naphthenic and paraffinic oils may be used.
가교제로서 유기과산화물을 주로 사용할 수 있는데 열분해온도가 높아 용융된 수지와 혼련되면서 올레핀계 고무의 가교반응 및 PP의 주쇄절단 반응을 일으킬 수 있는 것을 사용할 수 있다.As the crosslinking agent, organic peroxides may be mainly used, but those capable of causing crosslinking reaction of olefinic rubber and main chain cutting reaction of PP while being kneaded with molten resin due to high pyrolysis temperature.
예를들면 벤조일 퍼옥사이드, p-클로로벤조일 퍼옥사이드, 2,4-디클로로 벤조일 퍼옥사이드, 디큐밀 퍼옥사이드, 디-tert-부필 퍼옥사이드, 1,3-비스(tert-부필 퍼옥시 이소프로필)벤젠, 2,5-디메틸-2,5-디(tert-부틸 퍼옥사이드)헥산, 1,1-비스(tert-부틸 퍼옥시)-3,5,5-트리메틸시클로헥산등이 사용될 수 있다.For example benzoyl peroxide, p-chlorobenzoyl peroxide, 2,4-dichloro benzoyl peroxide, dicumyl peroxide, di-tert-butyl peroxide, 1,3-bis (tert-butyl peroxy isopropyl) Benzene, 2,5-dimethyl-2,5-di (tert-butyl peroxide) hexane, 1,1-bis (tert-butyl peroxy) -3,5,5-trimethylcyclohexane and the like can be used.
가교조제로는 올레핀계 고무의 용융 가교반응시 부분가교의 균일성 및 가교효과를 높이고 내열성등과 같은 제반물성을 상승시키기 위하여 첨가될 수 있다.The crosslinking aid may be added in order to increase the uniformity and crosslinking effect of partial crosslinking in the melt crosslinking reaction of the olefinic rubber and to increase various physical properties such as heat resistance.
또한 PP와 올레핀계 고무의 용융 가교반응시 PP의 과도한 주쇄 절단반응의 방지 및 올레핀계 고무와 PP의 결합반응을 유발시킬 수 있는 것을 사용한다.In addition, the melt crosslinking reaction of PP and olefinic rubber may be used to prevent excessive backbone chain breaking of PP and to induce a coupling reaction of olefinic rubber and PP.
예를들면 디비닐 벤젠, 트리메틸을 프로판 트리메타크릴레이트, 디알릴프탈레이트, 에틸렌 디메타크릴레이트, 트리알릴 이소시아눌레이트, 트리알릴시아눌레이트, m-페닐렌 비스말레이미드, 퀴논 디옥심등이 가교조제로서 사용될 수 있다. 이중 트리알릴 시아눌레이트, 트알릴이소시아눌레이트, 디비닐벤젠 및 트리비닐벤젠이 가장 바람직하다.For example divinyl benzene, trimethyl propane trimethacrylate, diallyl phthalate, ethylene dimethacrylate, triallyl isocyanurate, triallyl cyanurate, m-phenylene bismaleimide, quinone dioxime, etc. It can be used as this crosslinking aid. Most preferred are triallyl cyanurate, triallyl isocyanurate, divinylbenzene and trivinylbenzene.
이하 실시예에 의해 본 발명을 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to the following examples.
실시예에 앞서 시편준비방법 및 시험에 관하여 설명하면 1) 실린더온도가 200-230℃이며 금형온도가 30-50℃인 사출성형장치에서 ASTM 및 KS규격에 따라 물성시편을 준비하였으며 시편의 두께는 3.2mm로 하였다. 또한 후로우마크 및 표면불량 현상을 관찰하기 위하여 10×10×0.32cm의 평판을 시편성형과 같은 조건에서 성형하여 외관을 관찰하였다.The specimen preparation method and test described before the embodiment 1) In the injection molding apparatus with a cylinder temperature of 200-230 ℃ and a mold temperature of 30-50 ℃ prepared a physical specimen in accordance with ASTM and KS standards and the thickness of the specimen 3.2 mm was set. In addition, in order to observe the flow marks and surface defects, a flat plate of 10 × 10 × 0.32 cm was molded under the same conditions as the specimen forming to observe the appearance.
2) 물성측정항목츠은 ASTM규격에 따라 충격강도, 굴곡탄성율, 바이켓 연화점등을 측정하였고 인장강도, 신율은 KS-M-6518규격에 따라 측정하였다.2) Physical property measurement items were measured according to ASTM standard, impact strength, flexural modulus, bike softening point, and tensile strength and elongation were measured according to KS-M-6518 standard.
3) 외관검사에 관하여 설명하면 a) 후로우마크에 대하여: 10×10×0.32cm평판 사출성형시 후로우마크가 관찰되지 않음.: 10×10×0.32cm평판 사출성형시 후로우마크가 부분적으로 관찰됨. X : 10×10×0.32cm평판 사출성형시 후로우마크가 전면에 걸쳐 관찰됨.3) When explaining the external inspection a) About the FLOW mark : No blow mark is observed in 10 × 10 × 0.32cm flat plate injection molding. : In case of 10 × 10 × 0.32cm flat plate injection molding, the blow mark is partially observed. X: A blow mark is observed over the entire surface during 10 × 10 × 0.32cm flat plate injection molding.
b) 표면불량 현상에 대하여: 10×10×0.32cm평판에서 표면이 균일하고 매끄러움.: 10×10×0.32cm평판에서 표면이 다소 불균일함. X : 10×10×0.32cm평판에서 표면이 매우 불균일하고 거칠음.b) surface defects : Surface is uniform and smooth on 10 × 10 × 0.32cm flat plate. : Surface is somewhat uneven on 10 × 10 × 0.32cm flat plate. X: Surface is very uneven and rough on 10 × 10 × 0.32cm flat plate.
[실시예 1]Example 1
에틸렌프로필렌 비가 65/35인 에틸렌프로필렌 에틸리덴 노보넨이 공중합된 EPDM(ML-100℃=80) 70중량부, 결정성 PP호모폴리머 (230℃, 2160g에서의 MFR : 8g/10min) 30중량부, 유기과산화물 (Dicumyl peroxide) 0.5중량부, 파라핀계 프로세스오일 5중량부를 180℃로 가열된 가압형 반바리니더에서 약 10분간 60RPM으로 혼합하여 EPDM을 균일하게 부분가교시킨후 펠렛타이저에서 높이 3mm 직경 4mm의 실린더형 펠렛으로 제조한다.70 parts by weight of EPDM (ML-100 ° C. = 80) copolymerized with ethylene propylene ethylidene norbornene having an ethylene propylene ratio of 65/35, 30 parts by weight of crystalline PP homopolymer (230 ° C., MFR at 2160 g: 8 g / 10 min) 0.5 parts by weight of organic peroxide and 5 parts by weight of paraffin-based process oil were mixed at 60 RPM in a pressurized half-barrier heated at 180 ° C for about 10 minutes to uniformly crosslink EPDM, and then 3 mm high in the pelletizer. It is made of cylindrical pellets with a diameter of 4 mm.
생성된 펠렛 50중량부와 결정성 PP호모 폴리머(230℃, 2160g에서의 MFR : 8g/min) 50중량부를 텀블러믹서에서 고르게 혼합시킨 후 여기에 유기과산화물(Dicumyl peroxide) 0.5중량부를 투입한 후 약 5분간 추가 혼합하여 펠렛표면에 유기과산화물을 균일하게 분산시킨다.50 parts by weight of the resulting pellet and 50 parts by weight of a crystalline PP homopolymer (230 ° C., 2160 g, MFR: 8 g / min) were evenly mixed in a tumbler mixer, and 0.5 parts by weight of organic peroxide was added thereto. The mixture is further mixed for 5 minutes to uniformly disperse the organic peroxide on the surface of the pellet.
상기 혼합물을 코-니더를 사용하여 220℃에서 용융 혼합시키면서 압출하여 생성물을 얻은후 사출성형 및 물성측정을 하여 표 1 에 나타내었다.The mixture was extruded while melt-mixing at 220 ° C. using a co-kneader to obtain a product, which is shown in Table 1 by injection molding and physical property measurement.
[비교예 1]Comparative Example 1
실시예 1과 동일한 공정을 사용하여 1차 반바리공정을 거친 1차 생성물 50중량부와 결정성 PP호모폴리머(230℃, 216g,MFR40g/min) 50중량부를 텀블러믹서에서 3분간 혼합한후 200℃로 미리 가열된 코-니더에서 용융브렌딩하여 생성물을 얻은 후 사출성형 및 물성 측정으로 하여 표 1 에 나타내었다.Using the same process as in Example 1, 50 parts by weight of the primary product and 50 parts by weight of the crystalline PP homopolymer (230 ° C., 216 g, MFR40 g / min) after the first half-barrier process were mixed for 3 minutes in a tumbler mixer, followed by 200 After melt blending in a co-kneader preheated to ℃ to obtain the product is shown in Table 1 by injection molding and physical properties measurement.
[비교예 2]Comparative Example 2
실시예 1에서 사용된 EPDM 33.3중량부와 프로세스오일 2.38중량부, 결정성 PP호모폴리머(230℃, 2160g, MFR : 8g/10min) 64.4중량부를 1차 반바리공정을 사용하여 200℃에서 10분간 혼련한 후 펠렛으로 제조하였다.33.3 parts by weight of EPDM used in Example 1, 2.38 parts by weight of process oil, and 64.4 parts by weight of crystalline PP homopolymer (230 ° C., 2160 g, MFR: 8 g / 10 min) were used for 10 minutes at 200 ° C. using a first half-barrier process. After kneading it was prepared into pellets.
상기 배합분 펠렛을 텀블러믹서에서 유기과산화물(Dicumyl peroxide) 0.5중량부를 약 7분간 균일하게 분산시켜 220℃로 미리 가열된 코-니더에서 용융 혼합하여 생성물을 얻은 후 사출성형 및 물성측정으로 하여 표 1 에 나타내었다.0.5 parts by weight of organic peroxide (Dicumyl peroxide) in a tumbler mixer was uniformly dispersed for about 7 minutes and melt-mixed in a pre-heated co-kneader at 220 ° C. to obtain a product, followed by injection molding and physical property measurement. Shown in
[표 1]TABLE 1
* HOMO PP-1 : 결정성 PP호모폴리머(230℃,2160g에서의 MFR : 40g/10min)* HOMO PP-1: Crystalline PP homopolymer (MFR at 230 ℃, 2160g: 40g / 10min)
** NB : 파괴되지 않음.** NB: Not destroyed.
[실시예 2]Example 2
실시예 1과 동일한 공정 및 성분을 사용하였으나 결정성 PP호모폴리머 대신에 결정성 에틸렌-프로필렌 코폴리머(230℃, 2160g,MFR : 8.0g/10min)를 사용하여 반바리공정 및 코-니더 공정을 실시한후 물성 측정을 하여 표 2 에 나타내었다.The same process and components as in Example 1 were used, but the semi-barrier process and the co-kneader process were performed using a crystalline ethylene-propylene copolymer (230 ° C., 2160 g, MFR: 8.0 g / 10 min) instead of the crystalline PP homopolymer. The physical properties were measured and then shown in Table 2.
[실시예 3]Example 3
실시예 1과 동일한 공정 및 성분을 사용하였으나 1차 반바리공정 및 2차 코-니더 공정에서 가교조제인 트리알릴 이소시아눌레이트(Triallyl isocynurate) 각각 0.5중량부를 유기과산화물과 혼합하여 텀블러믹서에서 균일하게 분산시킨 후 용융 혼합하여 물성 측정한후 표 2 에 나타내었다.The same process and components as in Example 1 were used, but 0.5 parts by weight of triallyl isocynurate, a crosslinking aid, was mixed in the first half-barrier process and the second co-kneader process with organic peroxide, thereby uniformly mixing in a tumbler mixer. After dispersing, the mixture was melt mixed and the physical properties thereof were measured.
[실시예 4]Example 4
실시예 1과 동일한 공정을 사용하였으나 결정성 PP호모폴리머 대신에 결정성 에틸렌-프로필렌 코폴리머(230℃, 2160g, MFR : 8.0g/10min)를 사용하였으며 1차 반바리 공정 및 2차 코-니더 공정에서 가교조제인 트리알릴 이소시아눌레이크(Triallyl isocynurate) 각각 0.5중량부를 유기과산화물과 혼합하여 텀블러믹서에서 균일하게 분산시킨후 용융 혼합하여 물성 측정결과를 표 2 에 나타내었다.The same process as in Example 1 was used, but instead of the crystalline PP homopolymer, a crystalline ethylene-propylene copolymer (230 ° C., 2160 g, MFR: 8.0 g / 10 min) was used, and the first half-barrier process and the second co-kneader were used. 0.5 parts by weight of each of triallyl isocynurate, a crosslinking aid, was mixed with an organic peroxide, uniformly dispersed in a tumbler mixer, and then melt-mixed.
[표 2]TABLE 2
실시예 3-4에서 첨가된 다관능기모노머의 상승작용으로 인하여 유동성에는 거의 영향을 미치지않으면서 인장파단강도, 신율 굴곡강도, 내열성이 매우 효과가 있는 것으로 나타났다.Due to the synergism of the multifunctional monomer added in Example 3-4, it was found that the tensile breaking strength, the elongation flexural strength, and the heat resistance were very effective with little influence on the fluidity.
실시예 2에서 나타난 것처럼 PP코폴리머를 사용하였을 때 유동성 및 제반물성은 다소 저하되는 단점이 있지만 실제 문제가 될 수 있는 사출성형성은 양호한 것으로 나타났다. 또한 실시예 4에서 첨가된 다관능기모노머의 상승작용으로 인하여 실시예 1에서 사용된 PP호모폴리머를 사용하였을 때의 물성과 거의 유사한 수준으로 나타나는 것을 보여준다.As shown in Example 2, when the PP copolymer is used, the fluidity and general physical properties are slightly deteriorated, but the injection moldability, which may be a real problem, is found to be good. In addition, due to the synergism of the multifunctional monomer added in Example 4, it appears that the properties appear to be almost similar to the physical properties when using the PP homopolymer used in Example 1.
Application Number | Priority Date | Filing Date | Title |
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KR1019860006468AKR890003005B1 (en) | 1986-08-05 | 1986-08-05 | Preparation of olefin resin composition |
Application Number | Priority Date | Filing Date | Title |
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KR1019860006468AKR890003005B1 (en) | 1986-08-05 | 1986-08-05 | Preparation of olefin resin composition |
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KR880002934A KR880002934A (en) | 1988-05-12 |
KR890003005B1true KR890003005B1 (en) | 1989-08-18 |
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KR1019860006468AExpiredKR890003005B1 (en) | 1986-08-05 | 1986-08-05 | Preparation of olefin resin composition |
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