WO1993001236A1 - Composition elastomere thermoplastique - Google Patents

Composition elastomere thermoplastique Download PDF

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Publication number
WO1993001236A1
WO1993001236A1 PCT/JP1991/000938 JP9100938W WO9301236A1 WO 1993001236 A1 WO1993001236 A1 WO 1993001236A1 JP 9100938 W JP9100938 W JP 9100938W WO 9301236 A1 WO9301236 A1 WO 9301236A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermoplastic elastomer
ethylene
copolymer
elastomer composition
olefin
Prior art date
Application number
PCT/JP1991/000938
Other languages
English (en)
Japanese (ja)
Inventor
Masaji Yamamori
Mitsuaki Maeda
Original Assignee
Monsanto Japan Limited
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 Monsanto Japan Limited filed Critical Monsanto Japan Limited
Publication of WO1993001236A1 publication Critical patent/WO1993001236A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene

Definitions

  • the present invention relates to a thermoplastic elastomer composition, and more particularly, to a thermoplastic elastomer composition having high tear strength while maintaining low hardness (flexibility).
  • ⁇ ⁇ ⁇ ⁇ elastomer an olefin-based thermoplastic elastomer (hereinafter referred to as ⁇ ⁇ ⁇ ⁇ elastomer) composed of ⁇ -monoolefin copolymer rubber (typically EPDM) and crystalline polyolefin resin (typically PP) has been used.
  • EPDM ⁇ -monoolefin copolymer rubber
  • PP crystalline polyolefin resin
  • the present invention relates to an orifice-based thermoplastic elastomer ( a ) composed of an ⁇ -monoolefin copolymer rubber and a crystalline polyolefin resin, ( a ) 30 to 90% by weight;
  • thermoplastic elastomer composition comprising a C- or more ethylene- ⁇ -refined copolymer (b) in an amount of 7% to 10% by weight.
  • thermoplastic elastomer composition of the present invention comprises a TPO elastomer and a density of 0.870 to 0.91 ⁇ g ⁇ , and a vicatification temperature of 50 ° C or more.
  • the two components of the ethylene- ⁇ -refined copolymer are essential components.
  • the ⁇ -monoolefin copolymer rubber that constitutes the ⁇ 0 elastomer is essentially a non-polymer composed of a copolymer of at least one polyene (usually a gen) and two or more ⁇ -monoolefins.
  • a crystalline rubbery copolymer, P-DM is preferred.
  • the fin resin is a crystalline polymer obtained by polymerizing an olefin such as ethylene, propylene, butene-11, pentene-11, etc., alone or in combination of two or more thereof by an ordinary method.
  • a copolymer typically, such as polyethylene, a copolymer containing ethylene as a main component, polypropylene, a copolymer containing propylene as a main component, and polybutene.
  • a copolymer containing propylene as a main component is preferable.
  • the proportions of the ⁇ -monoolefin copolymer rubber and the crystalline polyolefin resin are usually 40 to 80% by weight of the ⁇ -monoolefin copolymer rubber and 60 to 20% by weight of the crystalline polyolefin resin. %. Both components are kneaded at a temperature higher than the melting point and become an elastomer.
  • the kneading treatment is performed by using a peroxide, a fuanol resin, sulfur, or the like. It is carried out in the presence of a vulcanizing agent.
  • the elastomer may contain other components as long as the rubber properties and the like are not impaired. Specifically, for example, an oil, a filler, a carbon black, a stabilizer and the like are mixed.
  • the one-year-old olefin to be copolymerized with ethylene generally has 3 to 6 carbon atoms. Specifically, propylene, butene-1, 1,4-methylpentene-11, hexene-11, etc.
  • the ⁇ -olefin content in the copolymer is not particularly limited, but is preferably from 5 to 4 mol%.
  • the ethylene one-year-old olefin copolymer used in the present invention has a density of 0.870 to 0.910 g ZCTI, preferably 0.895 to 0.910 g ZCTi. There must be. Dense Echiren the density exceeds 0. 9 1 0 g Zc / n 3 - a
  • the Orefui down copolymer upon the composition by blending the TP 0 Heras Tomah foremost, the flexibility of the composition lost Also, there is no effect of improving the tear strength of the composition.
  • an ethylene- ⁇ -olefin copolymer having a density lower than 0.870 g is not preferred because the tensile strength of the composition is reduced and the tackiness is too large.
  • the density of a general ethylene-based polymer is, for example, low density polyethylene (LDPE): 0.910 to
  • the ethylene- ⁇ -olefin copolymer used in the present invention is an extremely low-density ethylene-based polymer, unlike such a general polyethylene or a copolymer thereof, and generally comprises VLDPE. (Very Low Dens i ty
  • the ethylene- ⁇ -olefin copolymer used in the present invention must have a density in the specific range described above and have a vicat softening temperature (JISK7206) of 50 C or more.
  • Bikatsu preparative softening temperature in the present invention is used as the crystalline index, Bika' preparative softening temperature 5 0 e C than the polymer is a crystalline polymer. Therefore, the ethylene-one-year-old olefin copolymer used in the present invention is not an amorphous polymer.
  • the upper limit of the vicat softening temperature is not particularly limited.
  • Ethylene mono- ⁇ -olefin copolymers having such specific ranges of densities and bicut softening temperatures are commercially available from various companies under various brands. Co., Ltd.'s Nackflex® D One one
  • the blending ratio of the ethylene- ⁇ -age olefin copolymer is an important requirement, and TP0 elastomer and ethylene-free olefin copolymer have a total amount of TP 0
  • the proportion of the elastomer is 30 to 90% by weight 96, preferably 40 to 75% by weight, and the proportion of the ethylene- ⁇ -olefin copolymer is 70 to 10% by weight, preferably. Or between 6 ° and 25% by weight. If the proportion of the ethylene- ⁇ -olefin copolymer is less than the above range, the effect of improving the tear strength is not sufficient, and if it is more than the above range, the flexibility is lost and the elastomer is lost. Rubber elasticity, which is a characteristic of, is eliminated.
  • additives such as a plasticizer, a filler, a pigment, and a stabilizer can be blended within a range not to impair the purpose.
  • other rubbers or thermoplastic resins may be blended according to the purpose.
  • thermoplastic elastomer composition of the present invention can be obtained by uniformly kneading the elastomer, the ethylene- ⁇ -olefin copolymer, and other optional components in a molten state.
  • the kneading method is not particularly limited, and an ordinary kneading machine such as an extruder or a barrel can be used.
  • the kneading temperature is 18 ⁇ ⁇ 23 ⁇ .
  • the range of C is preferred.
  • the tear strength of TP0 elastomers varies significantly depending on their hardness.
  • the TP0 elastomer having the same hardness ethylene- ⁇ -olefin of component (b)
  • the physical properties of ⁇ ⁇ 0 elastomers of various hardnesses were measured and shown as a control.
  • test piece was prepared by pressing TP elastomer (Sant Plane®) into a flat plate having a thickness of 2 ⁇ (forming temperature: 180 ° C).
  • TPO Elastomer Santoprene®
  • Ethylene Eleven-Year-Olefin Copolymer Nakflex®
  • the kneaded material was taken out and formed into a plate having a thickness of 2 mni by a press (forming temperature: 180 ° C.) to prepare a test piece. Physical properties were measured for the above test pieces, and the results are shown in Table 1. I did not.
  • Specimens were prepared in the same manner as in the examples, except that polyethylene ( ⁇ ) was used instead of the ethylene- ⁇ -olefin copolymer.
  • thermoplastic elastomer composition of the present invention comprising a specific amount of an ethylene-olefin copolymer having specific physical properties, in contrast to the TP0 elastomer, The tear strength is improved without significantly impairing the flexibility.
  • LDPE, LLDPE, and HDPE are blended, the hardness increases, and therefore, only a small amount can be blended to maintain flexibility, and the blending also improves the tear strength. It is not allowed.
  • thermoplastic elastomer composition of the present invention has low hardness, that is, flexibility, and also has high tear strength. Therefore, the thermoplastic elastomer composition is advantageously used particularly in application fields where low hardness is required. can do.

Abstract

Composition élastomère thermoplastique renfermant: a) de 30 à 90 % en poids d'un élastomère thermoplastique d'oléfine comprenant un caoutchouc copolymère α-monooléfine et une résine polyoléfine cristalline et b) de 70 à 10 % en poids d'un copolymère éthylène-α-oléfine d'une densité de 0,870 à 0,910 g/cm3, et caractérisée par un point de ramollissement de Vicat de 50 °C ou plus.
PCT/JP1991/000938 1990-02-13 1991-07-12 Composition elastomere thermoplastique WO1993001236A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3199790A JPH03234744A (ja) 1990-02-13 1990-02-13 熱可塑性エラストマー組成物

Publications (1)

Publication Number Publication Date
WO1993001236A1 true WO1993001236A1 (fr) 1993-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/000938 WO1993001236A1 (fr) 1990-02-13 1991-07-12 Composition elastomere thermoplastique

Country Status (2)

Country Link
JP (1) JPH03234744A (fr)
WO (1) WO1993001236A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887378A1 (fr) * 1996-03-15 1998-12-30 Sumitomo Chemical Company Limited Composition et poudre d'elastomere thermoplastique et article moule obtenu

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1208378C (zh) 1997-11-20 2005-06-29 高级弹性体系统两合公司 用乙烯的热塑性无规共聚物改性的热塑性硫化体
CN103797067B (zh) 2011-09-15 2016-06-01 旭化成株式会社 交联组合物、交联组合物的制造方法和成型体

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101135A (ja) * 1981-12-10 1983-06-16 Idemitsu Petrochem Co Ltd ポリプロピレン組成物
JPS59219350A (ja) * 1983-05-27 1984-12-10 Showa Denko Kk ラミネ−ト用エチレン系共重合体組成物
JPS6198756A (ja) * 1984-10-20 1986-05-17 Mitsui Petrochem Ind Ltd 低温耐衝撃性に優れた中空瓶
JPS6295334A (ja) * 1985-10-21 1987-05-01 Mitsubishi Petrochem Co Ltd エチレン共重合体樹脂組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101135A (ja) * 1981-12-10 1983-06-16 Idemitsu Petrochem Co Ltd ポリプロピレン組成物
JPS59219350A (ja) * 1983-05-27 1984-12-10 Showa Denko Kk ラミネ−ト用エチレン系共重合体組成物
JPS6198756A (ja) * 1984-10-20 1986-05-17 Mitsui Petrochem Ind Ltd 低温耐衝撃性に優れた中空瓶
JPS6295334A (ja) * 1985-10-21 1987-05-01 Mitsubishi Petrochem Co Ltd エチレン共重合体樹脂組成物

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887378A1 (fr) * 1996-03-15 1998-12-30 Sumitomo Chemical Company Limited Composition et poudre d'elastomere thermoplastique et article moule obtenu
EP0887378A4 (fr) * 1996-03-15 1999-07-14 Sumitomo Chemical Co Composition et poudre d'elastomere thermoplastique et article moule obtenu
US6331360B1 (en) 1996-03-15 2001-12-18 Sumitomo Chemical Company, Limited Thermoplastic elastomer composition and powder and molded article thereof

Also Published As

Publication number Publication date
JPH03234744A (ja) 1991-10-18

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