JP5266622B2 - Novel polyolefin resin composition and resin molded body thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polyolefin-based resin composition capable of giving a molded body excellent in crystallinity, stiffness and transparency, and to provide a molded body of the polyolefin-based resin excellent in crystallinity, stiffness and transparency. <P>SOLUTION: A specific amide compound and at least one inorganic compound selected from a complex metal compound represented by general formula (2): (M<SP>1</SP><SB>Y</SB>M<SP>2</SP><SB>Z</SB>)<SB>1-X</SB>M<SP>3</SP><SB>X</SB>(OH)<SB>2</SB>A<SB>n</SB>-mH<SB>2</SB>O (2) and having a pH value in the range of 7.0-14.0, a baked product thereof and Mg<SB>3</SB>Si<SB>4</SB>O<SB>10</SB>(OH)<SB>2</SB>are incorporated in a polyolefin-based resin. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a novel polyolefin resin composition and a method for producing the same, a polyolefin resin molded product obtained by molding the composition, a method for improving the transparency of the polyolefin resin, and improving the rigidity of the polyolefin resin. The present invention relates to a method and a nucleating agent for polyolefin resin.

Polyolefin resins are excellent in moldability, mechanical properties, electrical properties, and the like, and are used in various fields as materials for film molding, sheet molding, blow molding, injection molding, and the like. However, although the polyolefin-based resin has excellent physical properties as described above, it generally has a problem of low transparency, crystallinity, and rigidity. In order to improve these problems, techniques for utilizing amide compounds as nucleating agents have been proposed (Patent Documents 1 to 4).
Polyolefin resin compositions containing these amide compounds have a high crystallization rate and contribute to shortening the molding cycle time when the composition is injection molded. Further, the obtained molded body is improved in transparency and mechanical properties (rigidity, etc.).

  However, in response to the advanced demands of end-users such as diversified and highly functional molded products of polyolefin resins, it is possible to provide molded products with further excellent transparency and mechanical strength (particularly rigidity). Development of a polyolefin-based resin composition that can be produced is desired.

Japanese Patent Application Laid-Open No. 6-192496 Japanese Patent Laid-Open No. 7-242610 JP-A-7-278374 JP-A-8-100088

  An object of the present invention is to provide a polyolefin-based resin composition capable of giving a molded article having excellent crystallinity, rigidity, and transparency, a method for producing the same, and crystallinity, rigidity, and transparency obtained by molding the resin composition. An object of the present invention is to provide an excellent molded polyolefin resin, a method for improving the transparency of the polyolefin resin, a method for improving the rigidity of the polyolefin resin, and a nucleating agent for the polyolefin resin.

  In view of the present situation, the present inventors have intensively studied to solve the above problems, and as a result, by blending a polyolefin resin with a specific amide compound and a specific inorganic compound, the crystallinity and rigidity of the polyolefin resin are improved. It has been found that the transparency is remarkably improved and the heat resistance is also improved. The present invention has been completed with further studies based on this finding. The present invention provides the following items of the invention.

［式中、Ｒ^１は、１，２，３−プロパントリカルボン酸又は１，２，３，４−ブタンテトラカルボン酸から全てのカルボンキシル基を除いて得られる残基を表す。３個又４個のＲ^２は、互いに同一又は異なって、それぞれ水素原子又は炭素数１〜１０の直鎖状若しくは分岐鎖状のアルキル基を表す。ｋは、３又は４の整数を表す。］
で表される少なくとも一種のアミド系化合物、及び
（Ｂ）成分：
一般式（２）
(Ｍ^１ _YＭ^２ _Ｚ)_１−Ｘ Ｍ^３ _Ｘ (ＯＨ)_２ Ａ_ｎ・ｍＨ_２Ｏ （２）
［式中、Ｍ^１及びＭ^２は、互いに異なって、リチウム、ナトリウム、カリウム、マグネシウム、マンガン、鉄、コバルト、ニッケル、銅又は亜鉛の１価又は２価の金属を表す。Ｍ^３は、アルミニウム、鉄、クロム、コバルト又はインジウムの３価の金属を表す。Ａは、ＯＨ⁻、Ｆ⁻、Ｃｌ⁻、Ｂｒ⁻、ＮＯ_３ ⁻、ＣＯ_３ ^２−、ＳＯ_４ ^２−、Ｆｅ(ＣＮ)_６ ^３−、ＣＨ_３ＣＯＯ⁻、Ｏ^２−，シュウ酸イオン又はサリチル酸イオンを表す。Ｘは０〜０．９、Ｙは０〜０．９、Ｚは０．１〜１の数を表す。ｎ及びｍは、０又は正の数を表す。］
で表され且つｐＨ値が７．０〜１４．０の範囲にある複合金属化合物、その複合金属化合物の焼成物及びＭｇ_３Ｓｉ_４Ｏ_１０(ＯＨ)_２からなる群より選ばれる少なくとも一種の無機化合物
を含有することを特徴とするポリオレフィン系樹脂組成物。 (Item 1) Polyolefin resin,
(A) component:
General formula (1)

[Wherein, R ¹ represents a residue obtained by removing all carboxyxyl groups from 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid. Three or four R ^{2 s} are the same or different from each other and each represent a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
And at least one amide compound represented by the formula (B):
General formula (2)
(M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An} · mH ₂ O (2)
[Wherein, M ¹ and M ² are different from each other and represent a monovalent or divalent metal such as lithium, sodium, potassium, magnesium, manganese, iron, cobalt, nickel, copper, or zinc. M ³ represents a trivalent metal such as aluminum, iron, chromium, cobalt, or indium. A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , oxalate ion or Represents salicylate ion. X represents 0 to 0.9, Y represents 0 to 0.9, and Z represents a number of 0.1 to 1. n and m represent 0 or a positive number. ]
And at least one inorganic selected from the group consisting of a composite metal compound having a pH value of 7.0 to 14.0, a fired product of the composite metal compound, and Mg ₃ Si ₄ O ₁₀ (OH) ₂ A polyolefin-based resin composition comprising a compound.

(Item 2) The above item 1 wherein the content of the component (A) is 0.001 to 5 parts by weight and the content of the component (B) is 0.001 to 5 parts by weight with respect to 100 parts by weight of the polyolefin resin. The polyolefin-based resin composition described in 1.

(Item 3) The polyolefin according to Item 1 or Item 2, wherein the weight ratio of the component (A) to the component (B) is in the range of (A) component: (B) component = 1: 0.01-10. -Based resin composition.

(Item 4) The component (B) is
General formula (3)
_{Mg h Al 2 (OH) 2h} + 4 CO 3 · pH 2 O (3)
[Wherein h represents h ≧ 3. p represents 0 or a positive number. ]
Hydrotalcite represented by the above, calcined product of the hydrotalcite,
General formula (4)
Li _1-X Al _X (OH) _{2 An} · mH ₂ O (4)
[Wherein, x, A, n and m have the same meaning as in general formula (2). ]
Lithium aluminum composite hydroxide salt represented by
Item _4. The polyolefin resin composition according to any one of Items 1 to 3, which is at least one selected from the group consisting of magnesium hydroxide and Mg ₃ Si ₄ O ₁₀ (OH) ₂ .

(Item 5) A polyolefin resin molded article obtained by molding the polyolefin resin composition according to any one of Items 1 to 4.

(Item 6) The polyolefin resin molded article according to item 5, wherein the molding method is a molding method including a step of substantially completely dissolving the component (A) in the molten polyolefin resin.

［式中、Ｒ^１は、１，２，３−プロパントリカルボン酸又は１，２，３，４−ブタンテトラカルボン酸から全てのカルボンキシル基を除いて得られる残基を表す。３個又４個のＲ^２は、互いに同一又は異なって、それぞれ水素原子又は炭素数１〜１０の直鎖状若しくは分岐鎖状のアルキル基を表す。ｋは、３又は４の整数を表す。］
で表される少なくとも一種のアミド系化合物、及び
（Ｂ）成分：
一般式（２）
(Ｍ^１ _YＭ^２ _Ｚ)_１−Ｘ Ｍ^３ _Ｘ (ＯＨ)_２ Ａ_ｎ・ｍＨ_２Ｏ （２）
［式中、Ｍ^１及びＭ^２は、互いに異なって、リチウム、ナトリウム、カリウム、マグネシウム、マンガン、鉄、コバルト、ニッケル、銅又は亜鉛の１価又は２価の金属を表す。Ｍ^３は、アルミニウム、鉄、クロム、コバルト又はインジウムの３価の金属を表す。Ａは、ＯＨ⁻、Ｆ⁻、Ｃｌ⁻、Ｂｒ⁻、ＮＯ_３ ⁻、ＣＯ_３ ^２−、ＳＯ_４ ^２−、Ｆｅ(ＣＮ)_６ ^３−、ＣＨ_３ＣＯＯ⁻、Ｏ^２−，シュウ酸イオン又はサリチル酸イオンを表す。Ｘは０〜０．９、Ｙは０〜０．９、Ｚは０．１〜１の数を表す。ｎ及びｍは、０又は正の数を表す。］
で表され且つｐＨ値が７．０〜１４．０の範囲にある複合金属化合物、その複合金属化合物の焼成物及びＭｇ_３Ｓｉ_４Ｏ_１０(ＯＨ)_２からなる群より選ばれる少なくとも一種の無機化合物
を含有せしめることを特徴とするポリオレフィン系樹脂の透明性を向上させる方法。 (Claim 7) Polyolefin resin
(A) component:
General formula (1)

[Wherein, R ¹ represents a residue obtained by removing all carboxyxyl groups from 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid. Three or four R ^{2 s} are the same or different from each other and each represent a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
And at least one amide compound represented by the formula (B):
General formula (2)
(M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An} · mH ₂ O (2)
[Wherein, M ¹ and M ² are different from each other and represent a monovalent or divalent metal such as lithium, sodium, potassium, magnesium, manganese, iron, cobalt, nickel, copper, or zinc. M ³ represents a trivalent metal such as aluminum, iron, chromium, cobalt, or indium. A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , oxalate ion or Represents salicylate ion. X represents 0 to 0.9, Y represents 0 to 0.9, and Z represents a number of 0.1 to 1. n and m represent 0 or a positive number. ]
And at least one inorganic selected from the group consisting of a composite metal compound having a pH value of 7.0 to 14.0, a fired product of the composite metal compound, and Mg ₃ Si ₄ O ₁₀ (OH) ₂ A method for improving the transparency of a polyolefin resin, which comprises incorporating a compound.

［式中、Ｒ^１は、１，２，３−プロパントリカルボン酸又は１，２，３，４−ブタンテトラカルボン酸から全てのカルボンキシル基を除いて得られる残基を表す。３個又４個のＲ^２は、互いに同一又は異なって、それぞれ水素原子又は炭素数１〜１０の直鎖状若しくは分岐鎖状のアルキル基を表す。ｋは、３又は４の整数を表す。］
で表される少なくとも一種のアミド系化合物、及び
（Ｂ）成分：
一般式（２）
(Ｍ^１ _YＭ^２ _Ｚ)_１−Ｘ Ｍ^３ _Ｘ (ＯＨ)_２ Ａ_ｎ・ｍＨ_２Ｏ （２）
［式中、Ｍ^１及びＭ^２は、互いに異なって、リチウム、ナトリウム、カリウム、マグネシウム、マンガン、鉄、コバルト、ニッケル、銅又は亜鉛の１価又は２価の金属を表す。Ｍ^３は、アルミニウム、鉄、クロム、コバルト又はインジウムの３価の金属を表す。Ａは、ＯＨ⁻、Ｆ⁻、Ｃｌ⁻、Ｂｒ⁻、ＮＯ_３ ⁻、ＣＯ_３ ^２−、ＳＯ_４ ^２−、Ｆｅ(ＣＮ)_６ ^３−、ＣＨ_３ＣＯＯ⁻、Ｏ^２−，シュウ酸イオン又はサリチル酸イオンを表す。Ｘは０〜０．９、Ｙは０〜０．９、Ｚは０．１〜１の数を表す。ｎ及びｍは、０又は正の数を表す。］
で表され且つｐＨ値が７．０〜１４．０の範囲にある複合金属化合物、その複合金属化合物の焼成物及びＭｇ_３Ｓｉ_４Ｏ_１０(ＯＨ)_２ からなる群より選ばれる少なくとも一種の無機化合物
を含有せしめることを特徴とするポリオレフィン系樹脂の剛性を向上させる方法。 (Section 8) Polyolefin resin
(A) component:
General formula (1)

[Wherein, R ¹ represents a residue obtained by removing all carboxyxyl groups from 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid. Three or four R ^{2 s} are the same or different from each other and each represent a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
And at least one amide compound represented by the formula (B):
General formula (2)
(M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An} · mH ₂ O (2)
[Wherein, M ¹ and M ² are different from each other and represent a monovalent or divalent metal such as lithium, sodium, potassium, magnesium, manganese, iron, cobalt, nickel, copper, or zinc. M ³ represents a trivalent metal such as aluminum, iron, chromium, cobalt, or indium. A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , oxalate ion or Represents salicylate ion. X represents 0 to 0.9, Y represents 0 to 0.9, and Z represents a number of 0.1 to 1. n and m represent 0 or a positive number. ]
And at least one inorganic selected from the group consisting of a composite metal compound having a pH value of 7.0 to 14.0, a fired product of the composite metal compound, and Mg ₃ Si ₄ O ₁₀ (OH) ₂ A method for improving the rigidity of a polyolefin-based resin, comprising incorporating a compound.

［式中、Ｒ^１は、１，２，３−プロパントリカルボン酸又は１，２，３，４−ブタンテトラカルボン酸から全てのカルボンキシル基を除いて得られる残基を表す。３個又４個のＲ^２は、互いに同一又は異なって、それぞれ水素原子又は炭素数１〜１０の直鎖状若しくは分岐鎖状のアルキル基を表す。ｋは、３又は４の整数を表す。］
で表される少なくとも一種のアミド系化合物、及び
（Ｂ）成分：
一般式（２）
(Ｍ^１ _YＭ^２ _Ｚ)_１−Ｘ Ｍ^３ _Ｘ (ＯＨ)_２ Ａ_ｎ・ｍＨ_２Ｏ （２）
［式中、Ｍ^１及びＭ^２は、互いに異なって、リチウム、ナトリウム、カリウム、マグネシウム、マンガン、鉄、コバルト、ニッケル、銅又は亜鉛の１価又は２価の金属を表す。Ｍ^３は、アルミニウム、鉄、クロム、コバルト又はインジウムの３価の金属を表す。Ａは、ＯＨ⁻、Ｆ⁻、Ｃｌ⁻、Ｂｒ⁻、ＮＯ_３ ⁻、ＣＯ_３ ^２−、ＳＯ_４ ^２−、Ｆｅ(ＣＮ)_６ ^３−、ＣＨ_３ＣＯＯ⁻、Ｏ^２−，シュウ酸イオン又はサリチル酸イオンを表す。Ｘは０〜０．９、Ｙは０〜０．９、Ｚは０．１〜１の数を表す。ｎ及びｍは、０又は正の数を表す。］
で表され且つｐＨ値が７．０〜１４．０の範囲にある複合金属化合物、その複合金属化合物の焼成物及びＭｇ_３Ｓｉ_４Ｏ_１０(ＯＨ)_２からなる群より選ばれる少なくとも一種の無機化合物
を含有するポリオレフィン系樹脂組成物の製造方法であって、（Ａ）成分が溶融ポリオレフィン系樹脂に実質的に完全溶解させる工程を具備するポリオレフィン系樹脂組成物の製造方法。 (Item 9) Polyolefin resin,
(A) component:
General formula (1)

[Wherein, R ¹ represents a residue obtained by removing all carboxyxyl groups from 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid. Three or four R ^{2 s} are the same or different from each other and each represent a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
And at least one amide compound represented by the formula (B):
General formula (2)
(M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An} · mH ₂ O (2)
[Wherein, M ¹ and M ² are different from each other and represent a monovalent or divalent metal such as lithium, sodium, potassium, magnesium, manganese, iron, cobalt, nickel, copper, or zinc. M ³ represents a trivalent metal such as aluminum, iron, chromium, cobalt, or indium. A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , oxalate ion or Represents salicylate ion. X represents 0 to 0.9, Y represents 0 to 0.9, and Z represents a number of 0.1 to 1. n and m represent 0 or a positive number. ]
And at least one inorganic selected from the group consisting of a composite metal compound having a pH value of 7.0 to 14.0, a fired product of the composite metal compound, and Mg ₃ Si ₄ O ₁₀ (OH) ₂ A method for producing a polyolefin resin composition containing a compound, the method comprising the step of substantially completely dissolving the component (A) in a molten polyolefin resin.

［式中、Ｒ^１は、１，２，３−プロパントリカルボン酸又は１，２，３，４−ブタンテトラカルボン酸から全てのカルボンキシル基を除いて得られる残基を表す。３個又４個のＲ^２は、互いに同一又は異なって、それぞれ水素原子又は炭素数１〜１０の直鎖状若しくは分岐鎖状のアルキル基を表す。ｋは、３又は４の整数を表す。］
で表される少なくとも一種のアミド系化合物と、
（Ｂ）成分：
一般式（２）
(Ｍ^１ _YＭ^２ _Ｚ)_１−Ｘ Ｍ^３ _Ｘ (ＯＨ)_２ Ａ_ｎ・ｍＨ_２Ｏ （２）
［式中、Ｍ^１及びＭ^２は、互いに異なって、リチウム、ナトリウム、カリウム、マグネシウム、マンガン、鉄、コバルト、ニッケル、銅又は亜鉛の１価又は２価の金属を表す。Ｍ^３は、アルミニウム、鉄、クロム、コバルト又はインジウムの３価の金属を表す。Ａは、ＯＨ⁻、Ｆ⁻、Ｃｌ⁻、Ｂｒ⁻、ＮＯ_３ ⁻、ＣＯ_３ ^２−、ＳＯ_４ ^２−、Ｆｅ(ＣＮ)_６ ^３−、ＣＨ_３ＣＯＯ⁻、Ｏ^２−，シュウ酸イオン又はサリチル酸イオンを表す。Ｘは０〜０．９、Ｙは０〜０．９、Ｚは０．１〜１の数を表す。ｎ及びｍは、０又は正の数を表す。］
で表され且つｐＨ値が７．０〜１４．０の範囲にある複合金属化合物、その複合金属化合物の焼成物及びＭｇ_３Ｓｉ_４Ｏ_１０(ＯＨ)_２からなる群より選ばれる少なくとも一種の無機化合物とからなるポリオレフィン系樹脂用核剤。 (Item 10) Component (A):
General formula (1)

[Wherein, R ¹ represents a residue obtained by removing all carboxyxyl groups from 1,2,3-propanetricarboxylic acid or 1,2,3,4-butanetetracarboxylic acid. Three or four R ^{2 s} are the same or different from each other and each represent a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
At least one amide compound represented by:
(B) component:
General formula (2)
(M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An} · mH ₂ O (2)
[Wherein, M ¹ and M ² are different from each other and represent a monovalent or divalent metal such as lithium, sodium, potassium, magnesium, manganese, iron, cobalt, nickel, copper, or zinc. M ³ represents a trivalent metal such as aluminum, iron, chromium, cobalt, or indium. A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , oxalate ion or Represents salicylate ion. X represents 0 to 0.9, Y represents 0 to 0.9, and Z represents a number of 0.1 to 1. n and m represent 0 or a positive number. ]
And at least one inorganic selected from the group consisting of a composite metal compound having a pH value of 7.0 to 14.0, a fired product of the composite metal compound, and Mg ₃ Si ₄ O ₁₀ (OH) ₂ A polyolefin resin nucleating agent comprising a compound.

(Item 11) The above item 10 wherein the content of the component (A) is 0.001 to 5 parts by weight and the content of the component (B) is 0.001 to 5 parts by weight with respect to 100 parts by weight of the polyolefin resin. The nucleating agent for polyolefin resin as described in 2.

(Item 12) The polyolefin according to Item 10 or Item 11, wherein the weight ratio of the component (A) to the component (B) is in the range of (A) component: (B) component = 1: 0.01-10. Nucleating agent for resin.

(Item 13) The component (B) is
General formula (3)
_{Mg h Al 2 (OH) 2h} + 4 CO 3 · pH 2 O (3)
[Wherein h represents h ≧ 3. p represents 0 or a positive number. ]
Hydrotalcite represented by the above, calcined product of the hydrotalcite,
General formula (4)
Li _1-X Al _X (OH) _{2 An} · mH ₂ O (4)
[Wherein, x, A, n and m have the same meaning as in general formula (2). ]
Lithium aluminum composite hydroxide salt represented by
Polyolefin resins for nucleating agent according to any preceding claim 10 to 12 is at least one selected from magnesium hydroxide and _{Mg 3 Si 4 O 10 (OH} ) group consisting of _2.

  ADVANTAGE OF THE INVENTION According to this invention, the useful polyolefin resin composition which can give the polyolefin resin molding excellent in crystallinity, rigidity, transparency, and heat resistance can be obtained. Also, by molding the polyolefin resin composition, a polyolefin resin molded article having excellent crystallinity, rigidity, transparency and heat resistance can be easily obtained.

[(A) component: amide compound]
The component (A) according to the present invention is at least one amide compound represented by the general formula (1).
Specifically, 1,2,3-propanetricarboxylic acid tricyclohexylamide, 1,2,3-propanetricarboxylic acid tri (2-methylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-methyl) Cyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-methylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-ethylcyclohexylamide) 1,2,3-propanetricarboxylic acid tri ( 3-ethylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-ethylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-n-propylcyclohexylamide), 1,2,3 -Propanetricarboxylic acid tri (3-n-propylcyclohexyla ), 1,2,3-propanetricarboxylic acid tri (4-n-propylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-iso-propylcyclohexylamide), 1,2,3-propane Tricarboxylic acid tri (3-iso-propylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-iso-propylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-n-butylcyclohexyl) Amide), 1,2,3-propanetricarboxylic acid tri (3-n-butylcyclohexylamide) 1,2,3-propanetricarboxylic acid tri (4-n-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid Acid tri (2-iso-butylcyclohexylamide), 1,2,3- Lopantricarboxylic acid tri (3-iso-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-iso-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-sec-butyl) Cyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-sec-butylcyclohexylamide) 1,2,3-propanetricarboxylic acid tri (4-sec-butylcyclohexylamide), 1,2,3-propane Tricarboxylic acid tri (2-tert-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-tert-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-tert-butylcyclohexyl) Amide), 1,2,3-propa Tricarboxylic acid tri (4-n-pentylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-n-hexylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-n-heptylcyclohexyl) Amide), 1,2,3-propanetricarboxylic acid tri (4-n-octylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri [4- (2-ethylhexyl) cyclohexylamide], 1,2,3 Propanetricarboxylic acid tri (4-n-nonylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-n-decylcyclohexylamide), 1,2,3-propanetricarboxylic acid [(cyclohexylamide) di (2-methylcyclohexylamide)], 1,2,3-propane Tricarboxylic acid [di (cyclohexylamide) (2-methylcyclohexylamide)],

1,2,3,4-butanetetracarboxylic acid tetracyclohexylamide, 1,2,3,4-butanetetracarboxylic acid tetra (2-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-ethylcyclohexylamide) 1 , 2,3,4-Butanetetracarboxylic acid tetra (3-ethylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-ethylcyclohexylamide), 1,2,3,4-butane Tetracarboxylic acid tetra (2-n-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic Tetra (3-n-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-n-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2- iso-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-iso-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-iso-propylcyclohexyl) Amide), 1,2,3,4-butanetetracarboxylic acid tetra (2-n-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-n-butylcyclohexylamide) 1, 2,3,4-butanetetracarboxylic acid tetra (4-n-butylcyclohexylamide), 1,2,3 4-Butanetetracarboxylic acid tetra (2-iso-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-iso-butylcyclohexylamide) 1,2,3,4-butanetetracarboxylic Acid tetra (4-iso-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-sec-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3 -Sec-butylcyclohexylamide) 1,2,3,4-butanetetracarboxylic acid tetra (4-sec-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-tert-butylcyclohexyl) Amide), 1,2,3,4-butanetetracarboxylic acid tetra (3-tert-butyl) Lucyclohexylamide) 1,2,3,4-butanetetracarboxylic acid tetra (4-tert-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-n-pentylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-n-hexylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-n-heptylcyclohexylamide), 1,2, 3,4-butanetetracarboxylic acid tetra (4-n-octylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra [4- (2-ethylhexyl) cyclohexylamide], 1,2,3 4-Butanetetracarboxylic acid tetra (4-n-nonylcyclohexylamide), 1,2,3,4-butanetetra Carboxylic acid tetra (4-n-decyl cyclohexyl amide), 1,2,3,4-butane tetracarboxylic acid [di (cyclohexyl amide) di (2-methylcyclohexyl amide)] and the like.

Among the amide compounds, R ² in the general formula (1) is a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, particularly from the viewpoint of nucleating action (nucleating agent effect). Amide compounds are preferred.
Specifically, 1,2,3-propanetricarboxylic acid tricyclohexylamide, 1,2,3-propanetricarboxylic acid tri (2-methylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-methyl) Cyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-methylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-ethylcyclohexylamide) 1,2,3-propanetricarboxylic acid tri ( 3-ethylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-ethylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-n-propylcyclohexylamide), 1,2,3 -Propanetricarboxylic acid tri (3-n-propylcyclohexyla ), 1,2,3-propanetricarboxylic acid tri (4-n-propylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-iso-propylcyclohexylamide), 1,2,3-propane Tricarboxylic acid tri (3-iso-propylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-iso-propylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-n-butylcyclohexyl) Amide), 1,2,3-propanetricarboxylic acid tri (3-n-butylcyclohexylamide) 1,2,3-propanetricarboxylic acid tri (4-n-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid Acid tri (2-iso-butylcyclohexylamide), 1,2,3- Lopantricarboxylic acid tri (3-iso-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-iso-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (2-sec-butyl) Cyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-sec-butylcyclohexylamide) 1,2,3-propanetricarboxylic acid tri (4-sec-butylcyclohexylamide), 1,2,3-propane Tricarboxylic acid tri (2-tert-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-tert-butylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-tert-butylcyclohexyl) Amide),

1,2,3,4-butanetetracarboxylic acid tetra (cyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic Acid tetra (3-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-ethylcyclohexylamide) ) 1,2,3,4-butanetetracarboxylic acid tetra (3-ethylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-ethylcyclohexylamide), 1,2,3,4 -Butanetetracarboxylic acid tetra (2-n-propylcyclohexylamide), 1,2,3,4-butanetetracar Acid tetra (3-n-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-n-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra ( 2-iso-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-iso-propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-iso-) Propylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-n-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-n-butylcyclohexylamide) 1,2,3,4-butanetetracarboxylic acid tetra (4-n-butylcyclohexylamide), 1,2 3,4-butanetetracarboxylic acid tetra (2-iso-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-iso-butylcyclohexylamide) 1,2,3,4-butane Tetracarboxylic acid tetra (4-iso-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-sec-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-sec-butylcyclohexylamide) 1,2,3,4-butanetetracarboxylic acid tetra (4-sec-butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (2-tert- Butylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-tert- Butylcyclohexylamide) 1,2,3,4-butanetetracarboxylic acid tetra (4-tert-butylcyclohexylamide) and the like.

Among these preferable amide compounds, an amide compound in which R ² in the general formula (1) is a hydrogen atom or a methyl group is particularly preferable, particularly from the viewpoint of balance of transparency and rigidity and easy availability of raw materials. Specifically, 1,2,3-propanetricarboxylic acid tricyclohexylamide, 1,2,3-propanetricarboxylic acid tri (2-methylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-methyl) Cyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetracyclohexylamide, 1,2,3,4-butanetetracarboxylic acid Tetra (2-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (3-methylcyclohexylamide), 1,2,3,4-butanetetracarboxylic acid tetra (4-methylcyclohexylamide) Etc. are exemplified.

When emphasizing the effect of improving the transparency, an amide compound in which R ¹ in the general formula (1) is a residue obtained by removing all carboxyxyl groups from 1,2,3-propanetricarboxylic acid Is particularly preferred. Specifically, 1,2,3-propanetricarboxylic acid tricyclohexylamide, 1,2,3-propanetricarboxylic acid tri (2-methylcyclohexylamide), 1,2,3-propanetricarboxylic acid tri (3-methyl) Cyclohexylamide), 1,2,3-propanetricarboxylic acid tri (4-methylcyclohexylamide) and the like.

  Said amide type compound can be used individually or in combination of 2 or more types as appropriate.

  The crystal form of the amide compound according to the present invention is not particularly limited as long as the effects of the present invention can be obtained, and any crystal form such as hexagonal crystal, monoclinic crystal, cubic crystal and the like can be used. These crystals are also known or can be produced according to known methods.

  The amide compound according to the present invention preferably has a purity of substantially 100%, but may contain some impurities. Even when impurities are contained, the purity of the amide compound is preferably 90% by weight or more, more preferably 95% by weight or more, and particularly 97% by weight or more. Examples of the impurities include monoamide dicarboxylic acid derived from a reaction intermediate or unreacted substance or an ester compound thereof, diamide monocarboxylic acid or an ester compound thereof, an imide compound derived from a side reaction product, and the like.

  The method for producing the amide compound according to the present invention is not particularly limited as long as the target amide compound is obtained. For example, it can be produced from a specific aliphatic polycarboxylic acid component and a specific alicyclic monoamine component according to a conventionally known method (for example, JP-A-7-242610).

  Examples of the aliphatic polycarboxylic acid component include 1,2,3-propanetricarboxylic acid, 1,2,3,4-butanetetracarboxylic acid, acid chlorides and anhydrides of the polycarboxylic acid, and the polycarboxylic acid. Examples thereof include derivatives such as esters with lower alcohols having 1 to 4 carbon atoms. These aliphatic polycarboxylic acid components can be used for amidation alone or in combination of two kinds.

The alicyclic monoamine component is at least one selected from the group consisting of cyclohexylamine and a cyclohexylamine substituted with a linear or branched alkyl group having 1 to 10 carbon atoms (preferably 1 to 4 carbon atoms). It can be used for amidation alone or in combination of two or more.
Specifically, cyclohexylamine, 2-methylcyclohexylamine, 3-methylcyclohexylamine, 4-methylcyclohexylamine methylcyclohexylamine, 2-ethylcyclohexylamine, 2-n-propylcyclohexylamine, 2-iso-propylcyclohexyl Examples include amines, 2-n-butylcyclohexylamine, 2-iso-butylcyclohexylamine, 2-sec-butylcyclohexylamine, 2-tert-butylcyclohexylamine and the like.

  The cyclohexylamine substituted with the above alkyl group may be any of a cis isomer, a trans isomer and a mixture of these stereoisomers. The preferred cis: trans ratio is preferably in the range of 50:50 to 0: 100, particularly preferably in the range of 35:65 to 0: 100.

  The particle size of the amide compound according to the present invention is not particularly limited as long as the effects of the present invention can be obtained, but those having a particle size as small as possible are preferable from the viewpoint of the dissolution rate (or dissolution time) for the molten polyolefin resin. . When the measurement value of the particle size obtained by the laser diffraction light scattering method is adopted, the maximum particle size of the amide compound is 200 μm or less, preferably 100 μm or less, more preferably 50 μm, particularly 10 μm or less. Is done.

  As a method for adjusting the maximum particle size within the above range, a method using a known pulverizer in this field is generally used, and a known classifier can be used if necessary. Specifically, a fluidized bed type counter jet mill 100AFG (trade name, manufactured by Hosokawa Micron Corporation), a supersonic jet mill PJM-200 (trade name, manufactured by Nippon Pneumatic Co., Ltd.), a pin mill, etc. And dry classifiers (such as cyclones and micron separators).

[(B) component: inorganic compound]
The component (B) according to the present invention is a composite metal compound represented by the above general formula (2) and having a pH value in the range of 7.0 to 14.0, a fired product of the composite metal compound, and Mg ₃ Si _4. It is at least one inorganic compound selected from the group consisting of O ₁₀ (OH) ₂ .

M ¹ and M ² in the general formula (2) are different from each other and are lithium, sodium, potassium, magnesium, manganese, iron, cobalt, nickel, copper, or zinc, preferably lithium, sodium, potassium, magnesium, It is manganese, iron, cobalt, nickel or copper, more preferably lithium or magnesium, and particularly preferably magnesium.

M ³ in the general formula (2) is aluminum, iron, chromium, cobalt, or indium, and preferably aluminum.

A in the general formula (2) is OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ^{2. −} , Oxalate ion or salicylate ion, preferably OH ⁻ , Cl ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ .

  The pH value of the composite metal compound is 7.0 to 14.0, preferably 7.2 to 13.0, particularly 7.5 to 12.0.

As the composite metal compound, a commercially available product can be used as long as the effects of the present invention are not impaired. For _{example, Mg 4.5 Al 2 (OH)} 13 CO 3 · 3.5H 2 O ( manufactured by Kyowa Chemical Industry Co., Ltd., trade name _{"DHT-4A"), Mg 4.5 Al 2 (OH} ) 13 CO 3 ( Kyowa Manufactured by Chemical Industry Co., Ltd., trade name “DHT-4A2”), Li ₂ Al ₄ (OH) ₁₂ CO ₃ / 3H ₂ O (manufactured by Mizusawa Chemical Industry Co., Ltd., trade name “Mizukarak L”), Mg _4.5 Al ₂ ( _{OH) 13 CO 3 · 3.5H 2} O ( manufactured by Kyowa chemical industry Co., Ltd., trade name "DHT-6"), Mg (OH) ₂ (manufactured by Kyowa chemical industry Co., Ltd., trade name "Magusaratto F") and the like are exemplified The

The “fired product of the composite metal compound” is an inorganic oxide obtained by firing the composite metal compound by a known method. As the fired product, a commercially available product can be used as long as the effects of the present invention are not impaired. For example, Mg _0.7 Al _0.3 O _1.15 (manufactured by Kyowa Chemical Industry Co., Ltd., trade name “KYOWARD 2100”) is exemplified.

The above “Mg ₃ Si ₄ O ₁₀ (OH) ₂ ” is synonymous with a compound generally called “talc” or “hydrous magnesium silicate”. As Mg ₃ Si ₄ O ₁₀ (OH) ₂ , a commercially available product can be used as long as the effects of the present invention are not impaired. For example, “Microace P-6” (trade name, manufactured by Nippon Talc Co., Ltd.) is exemplified. Mg ₃ Si ₄ O ₁₀ (OH) ₂ may contain a small amount of impurities such as carbonic acid and other minerals.

Among the components (B), preferably the hydrotalcite represented by the above general formula (3), the fired product of the hydrotalcite, the lithium aluminum composite hydroxide salt represented by the general formula (4), hydroxylation At least one selected from the group consisting of magnesium and Mg ₃ Si ₄ O ₁₀ (OH) ₂ , more preferably hydrotalcite or Mg ₃ Si ₄ O ₁₀ (OH) ₂ , particularly hydrotalcite is recommended.

Among the hydrotalcites, hydrotalcites in which h in the general formula (3) is preferably 3 to 20, more preferably 4 to 10 are recommended from the viewpoint of availability.
Specifically, Mg _4.5 Al ₂ (OH) ₁₃ CO ₃ .3.5H ₂ O, Mg ₄ Al ₂ (OH) ₁₂ CO ₃ .3H ₂ O, Mg ₃ Al ₂ (OH) ₁₀ CO ₃ .3H ₂ O, Mg ₆ Al ₂ (OH) ₁₆ CO _{3 and the} like. In addition, as the hydrotalcite, a commercially available product can be used as long as the effects of the present invention are not impaired. For _{example, Mg 4.5 Al 2 (OH)} 13 CO 3 · 3.5H 2 O ( manufactured by Kyowa Chemical Industry Co., Ltd., trade name _{"DHT-4A"), Mg 4.5 Al 2 (OH} ) 13 CO 3 ( Kyowa chemical industry Co., Ltd., trade name _{"DHT-4A2"), Mg 4.5 Al 2 (OH} ) 13 CO 3 · 3.5H 2 O ( manufactured by Kyowa chemical industry Co., Ltd., trade name "DHT-6") and the like are exemplified Is done.

  Said inorganic compound can be used individually or in combination of 2 or more types, respectively.

  The inorganic compound has a surface treated with a higher fatty acid such as stearic acid or oleic acid, a higher fatty acid amide such as stearic acid amide or oleic acid amide (for example, a treatment method such as coating). Can be used.

  The particle size of the inorganic compound is not particularly limited as long as the effects of the present invention are obtained, but those having a particle size as small as possible are preferable from the viewpoint of dispersibility with respect to the molten polyolefin resin and refractive index. When the measured value of the particle diameter obtained by the laser diffraction light scattering method is adopted, the median diameter of the inorganic compound is preferably 100 μm or less, more preferably 50 μm or less, still more preferably 10 μm, particularly 1 μm or less. Recommended.

In the claims and specification, the composite metal compound according to the present invention is represented by the general formula (2) “(M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An} · mH ₂ O”. "(M ¹ _αY M ² _αZ )" expressed by multiplying the coefficient (Y, Z, (1-X), X, 2) of the general formula (2) by α (positive number). The compound of _{α (1-X)} M ³ _αX (OH) _{2α An} · mH ₂ O ”is also represented by the general formula (2)“ (M ¹ _Y M ² _Z ) _1-X M ³ _X (OH) _{2 An ”.} “MH ₂ O”.
For example, when the compound represented by the general formula (2) is “Mg _0.692 Al _0.308 (OH) ₂ CO ₃ .3.5H ₂ O”, if α = 6.5, “Mg _4.5 al ₂ become _{(OH) 13 CO 3 · 3.5H} 2 O "(formula (corresponding to a kind of hydrotalcite represented by 3)). Both compounds appear to be represented by different coefficients, but as described above, they are compounds having the same meaning.

[Polypropylene resin]
Examples of the polyolefin resin according to the present invention include a polyethylene resin, a polypropylene resin, and a polybutene resin.
Specifically, high density polyethylene, medium density polyethylene, linear polyethylene, ethylene copolymer having an ethylene content of 50% by weight or more (preferably 70% by weight or more), propylene homopolymer, propylene content of 50% by weight or more (preferably 70% or more). % Propylene copolymer, butene homopolymer, butene content 50 wt% or more, preferably 70 wt% butene copolymer, methylpentene homopolymer, methylpentene content 50 wt% or more (preferably 70 wt% or more) Examples thereof include methylpentene copolymer and polybutadiene.

  The copolymer may be a random copolymer or a block copolymer. If these resins have stereoregularity, they may be isotactic or syndiotactic.

  As the comonomer that can constitute the copolymer, specifically, an α-olefin having 2 to 12 carbon atoms such as ethylene, propylene, butene, pentene, hexene, heptene, octene, nonene, decene, undecene, dodecene, 1,4- Examples include bicyclo type monomers such as endomethylenecyclohexene, (meth) acrylic acid esters such as methyl (meth) acrylate and ethyl (meth) acrylate, and vinyl acetate.

  As a catalyst applied for producing such a polymer, not only a Ziegler-Natta type catalyst generally used but also a transition metal compound (for example, a titanium halide such as titanium trichloride and titanium tetrachloride) is chlorinated. A catalyst system or metallocene catalyst obtained by combining a catalyst formed on a carrier mainly composed of magnesium halide such as magnesium and an alkylaluminum compound (tetraethylaluminum, diethylaluminum chloride, etc.) can also be used.

  The polyolefin resin melt flow rate according to the present invention (hereinafter abbreviated as “MFR”, conforming to JIS K 7210-1995) is appropriately selected depending on the molding method to be applied, but is usually 0.01 to 200 g / 10 min, preferably 0.05-100 g / 10 min is recommended.

[Polyolefin resin composition]
In the polyolefin resin composition of the present invention, the above component (A), component (B) and, if necessary, the following “other additives” (for example, a modifier for polyolefin resin) are blended in the polyolefin resin. Can be obtained.

As a manufacturing method of the polyolefin resin composition of the present invention, for example,
(I) polyolefin resin (in the form of powder, granules, flakes or pellets), (A) component, (B) component and, if necessary, “other additives” so as to have a desired composition ratio; Then, using a conventional mixer (eg, Henschel mixer, ribbon blender, V blender, etc.), a powder blending (dry blending) to obtain a dry blend type polyolefin resin composition,
(Ii) The above-mentioned dry blend type polyolefin resin composition is usually 160 to 300 ° C., preferably 180 to 280 ° C., particularly preferably using a conventional kneader (for example, a uniaxial or biaxial extruder). Is exemplified by a method of melt-kneading at a temperature of 200 ° C. to 260 ° C., cooling the extruded strand, and cutting the obtained strand to obtain a pellet type polyolefin resin composition.
In addition, the method of making the pellet type includes a method of obtaining a polyolefin resin composition of high-concentration master batch pellets in which the component (A) is 1 to 20% by weight (preferably 2 to 15% by weight). It is preferable that the polyolefin resin composition of the high-concentration master batch pellet is provided in the molding step after being appropriately diluted with a polyolefin resin so as to have a desired composition ratio.

  In order to obtain the effect of the present invention more effectively, in the melt-kneading step described in (ii) above, the step includes a step of substantially completely dissolving the component (A) in the molten polyolefin resin. It is preferable. In particular, this is an important process when the polyolefin resin composition of the present invention is used for applications in which the transparency of the polyolefin resin molding is important.

  The method for producing a polyolefin resin composition according to (ii) is provided by a method for improving the transparency of the polyolefin resin according to Item 7 and a method for improving the rigidity of the polyolefin resin according to Item 8. At the same time.

The content of the component (A) according to the present invention is preferably 0.001 to 5 parts by weight, more preferably 0.005 to 2 parts by weight, particularly 0.01 to 1 part per 100 parts by weight of the polyolefin resin. Part by weight is recommended. Moreover, content of (B) component based on this invention is 0.01-5 weight part with respect to 100 weight part of polyolefin resin, More preferably, it is 0.005-3 weight part Especially 0.01-1 weight part. Is recommended. The content of the component (A) and the component (B) with respect to the polyolefin resin preferably satisfies the respective recommended content ranges at the same time.
The composition ratio (weight ratio) between the component (A) and the component (B) according to the present invention is preferably (A) component: (B) component = 1: 0.01 to 10, more preferably 1: 0.05-3, especially 1: 0.1-2 are recommended.
By blending within these ranges, a significant improvement in the effect of the present invention is recognized.

  In the case where the polyolefin resin according to the present invention is a polypropylene random copolymer, among the effects of the present invention, a tendency to improve transparency and crystallinity is recognized. In the case of a polypropylene homopolymer, transparency, crystal In the case of a polypropylene block polymer, crystallinity, heat resistance and rigidity tend to be further improved among the effects of the present invention.

  As described above, the provision of the polyolefin resin composition simultaneously provides a useful polyolefin resin nucleating agent as described in Items 10 to 13 above. The nucleating agent is substantially composed of only the component (A) and the component (B).

[Other additives]
In addition to the above components (A) and (B), the polyolefin-based resin composition of the present invention may include “other additives” such as a polyolefin modifier as appropriate according to the purpose of use and use thereof. It can mix | blend in the range which does not impair the effect.
Examples of the polyolefin modifier include various additives described in "Polylist Additives Manual" (January 2002) edited by the Sanitation Council for Polyolefins.
More specifically, stabilizers (metal compounds, epoxy compounds, nitrogen compounds, phosphorus compounds, sulfur compounds, etc.), ultraviolet absorbers (benzophenone compounds, benzotetraazole compounds, etc.), antioxidants (phenol compounds, Phosphite compounds, sulfur compounds, etc.), surfactants, lubricants (aliphatic hydrocarbons such as paraffin and wax, higher fatty acids having 8 to 22 carbon atoms, higher fatty acid metal salts having 8 to 22 carbon atoms (Al , Ca, Mg, Zn), higher aliphatic alcohols having 8 to 22 carbon atoms, polyglycol, esters of higher fatty acids having 4 to 22 carbon atoms and aliphatic monohydric alcohols having 4 to 18 carbon atoms, 8 to 8 carbon atoms 22 higher fatty acid amides, silicone oils, rosin derivatives, etc.), foaming agents, foaming aids, polymer additives, as well as plasticizers (dialkyl phthalates, dialkyl esters) Sa hydro phthalate), crosslinking agents, crosslinking accelerators, antistatic agents, dispersants, organic pigments, processing aids, various additives such as other nucleating agents are exemplified. The amount added can be appropriately selected within a range not impairing the effects of the present invention.

  For example, when the above-described metal compound or higher fatty acid metal salt is added to the polyolefin resin composition of the present invention, the transparency of the polyolefin resin molded product of the present invention (especially when the polyolefin resin is a polypropylene random copolymer) is further improved. The tendency to do is recognized. Examples of such additives include calcium stearate. The amount of the additive used is preferably 0.001 to 0.2 parts by weight, more preferably 0.005 to 0.1 parts by weight with respect to 100 parts by weight of the polyolefin resin.

  The polyolefin resin composition of the present invention thus obtained is a polyolefin resin composition capable of giving a useful resin molded article excellent in crystallinity, heat resistance, rigidity and transparency.

[Polyolefin resin molded product]
The polyolefin resin molded product of the present invention can be obtained by molding the polyolefin resin composition of the present invention according to a conventionally known molding method commonly used in this field.
Specifically, molding methods such as injection molding, extrusion molding, blow molding, pressure molding, rotational molding, sheet molding, film molding, and thermoforming are exemplified.

The molding conditions can be appropriately selected from a wide range of conventionally employed conditions. As a method for obtaining the effect of the present invention more effectively, when molding the polyolefin resin composition of the present invention, a step of substantially completely dissolving the component (A) contained in the resin composition in the molten polyolefin resin. It is preferable to go through. In particular, this is an important process when the polyolefin resin composition of the present invention is used for applications in which the transparency of the polyolefin resin molding is important.
The molding temperature (resin temperature) is usually 160 to 300 ° C, preferably 180 to 280 ° C, particularly preferably 200 to 260 ° C.

The polyolefin-based resin molded article of the present invention thus obtained has excellent crystallinity, transparency, rigidity, and heat resistance, and therefore contains a nucleating agent such as metal phosphates, metal carboxylates, and benzylidene sorbitols. In the field where the polyolefin resin composition to be used has been conventionally used, it can be used similarly.
Specifically, disposable syringes that can be sterilized by heat, radiation, etc., medical devices such as infusion / blood transfusion sets and blood collection devices; packaging for foods and plants that are sterilized by radiation, etc .; for clothing cases and clothing storage Various cases such as containers; cups for hot-filling food, packaging containers for retort foods; containers for microwave ovens; cans for beverages such as juice and tea, cosmetics, pharmaceuticals, shampoos, bottles, etc. Containers; Containers for seasonings such as miso and soy sauce and caps; Cases and containers for food such as water, rice, bread and pickles; Miscellaneous goods such as cases for refrigerators; Stationery; Electrical and mechanical parts; Is preferred.

  In addition to the effects of the present invention, the polyolefin resin molded article of the present invention is excellent in thermal stability of the amide compound itself of the component (A), so that the odor and taste transfer caused by the amide compound is not caused. Virtually does not occur. Therefore, the molded article is particularly useful for applications (food packaging materials, beverage bottles, cosmetics, etc.) that place importance on the transfer of odor and taste.

EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not limited to these Examples.
The pH value and particle size of the inorganic compound according to the present invention were measured by the methods described in (1) and (2) below. Moreover, the crystallinity, rigidity, heat resistance, and transparency of the polyolefin resin molded product were evaluated by the methods described in (3) to (6) below.

(1) pH value After adding 50 ml of 50v / v% ethanol aqueous solution to a 100 ml Erlenmeyer flask, add 1 g of inorganic compound, and stir for 10 minutes using a magnetic stirrer in a constant temperature bath at 25 ° C. to disperse the inorganic compound. I let you. Next, the pH value of the dispersion was measured using a pH meter (Horiba Seisakusho).

(2) Particle size An inorganic compound dispersion was prepared by uniformly dispersing an inorganic compound in water using a surfactant. The median diameter (μm) of the obtained dispersion was measured using a laser diffraction / scattering particle size distribution analyzer (model name “LA-910”, manufactured by Horiba, Ltd.). It shows that a particle size is so small that the obtained numerical value is small.

(3) Crystallinity Using an differential scanning calorimeter (model name “Diamond DSC”, manufactured by PerkinElmer), an exothermic peak was determined according to JIS K7121. The peak top of the obtained exothermic peak was defined as the crystallization temperature (° C). The higher the crystallization temperature, the better the crystallinity.
An increase in the crystallization temperature means an increase in the crystallization speed, which contributes to shortening of the molding cycle time at the time of injection molding.

(4) Rigidity Flexural modulus (MPa) was measured according to JIS K 7203 (1982) using a universal testing machine (model name “Instron”, manufactured by Instron Japan Company Limited).
The test temperature was 25 ° C. and the test speed was 10 mm / min. The greater the value of the flexural modulus, the better the rigidity.

(5) Heat resistance The deflection temperature under load (° C.) was measured according to ASTM D648 using an HDT test apparatus (model name “HDT TESTER 3M-2”, manufactured by Toyo Seiki Co., Ltd.).
The edgewise method was used and the bending stress was 0.45 MPa. The higher the deflection temperature under load, the better the heat resistance.

(6) Transparency Using a haze measuring device (model name “Hazeguard II”, manufactured by Toyo Seiki Seisakusho Co., Ltd.), the haze value (%, thickness 1 mm) was measured according to ASTM D1003. The smaller the numerical value obtained, the better the transparency.

[Production Example 1]
In a 500 ml four-necked flask equipped with a stirrer, thermometer, cooling pipe and gas inlet, 9.7 g (0.055 mol) of 1,2,3-propanetricarboxylic acid and 100 g of N-methyl-2-pyrrolidone were weighed. The 1,2,3-propanetricarboxylic acid was completely dissolved while stirring at room temperature under a nitrogen atmosphere. Subsequently, 2-methylcyclohexylamine (trans form: cis form = 74.3: 25.7, GLC area%) 20.5 g (0.1815 mol), triphenyl phosphite 56.3 g (0.1815 mol) ), 14.4 g (0.1815 mol) of pyridine and 50 g of N-methyl-2-pyrrolidone were added, and the reaction was performed at 100 ° C. for 4 hours with stirring in a nitrogen atmosphere. After cooling, the reaction solution was slowly poured into a mixed solution of 500 ml of isopropyl alcohol and 500 ml of water and stirred at about 40 ° C. for 1 hour, and then the precipitated white precipitate was filtered off. Further, the obtained white solid was washed twice with 500 ml of isopropyl alcohol at about 40 ° C. and then dried at 100 ° C. and 133 Pa for 6 hours.
The obtained dried product is pulverized in a mortar, passed through a standard sieve having an aperture of 106 μm (JIS Z-8801 standard), and 1,2,3-propanetricarboxylic acid tri (2-methylcyclohexylamide) according to the present invention ( Hereinafter, abbreviated as “PTC-2MeCHA”.) 18.8 g (yield 74%) was obtained.

[Production Example 2]
Except for using cyclohexylamine instead of 2-methylcyclohexylamine, the same procedure as in Production Method 1 was performed, and 1,2,3-propanetricarboxylic acid tricyclohexylamide (hereinafter referred to as “PTC-CHA”) according to the present invention was used. Abbreviated.) 17.3 g (yield 75%) was obtained.

[Example 1]
100 parts by weight of isotactic homopolypropylene resin (MFR = 30 g / 10 minutes, hereinafter abbreviated as “h-PP”), 0.15 parts by weight of PTC-2MeCHA prepared in Production Example 1 as component (A) , (B) component as _{Mg 4.5 Al 2 (OH) 13} CO 3 · 3.5H 2 O ( manufactured by Kyowa chemical industry Co., Ltd., trade name "DHT-4A") and 0.05 part by weight, still other Of tetrakis [methylene-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] methane (trade name “IRGANOX1010” manufactured by Ciba Specialty Chemicals) and tetrakis (2,4-di-t-butylphenyl) phosphite (Ciba Specialty Chemicals, trade name “IRGAFOS168”) 0.05 It was added in an amount unit, by dry blending 1000 rpm, 5 minutes by a Henschel mixer to obtain a polyolefin resin composition of the present invention the dry blend type.
Next, using a uniaxial extruder having a diameter of 20 mm, the blend type polyolefin resin composition is melt-kneaded at a resin temperature of 240 ° C., the extruded strand is cooled with water, and the obtained strand is cut. A pellet type polyolefin resin composition of the present invention was obtained.
Next, the obtained pellet was injection-molded under conditions of a resin temperature of 250 ° C. and a mold temperature of 40 ° C. to obtain a polyolefin-based resin molded body (test piece) of the present invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 1.
It was confirmed in advance that 0.15 parts by weight of PCT-2MeCHA was dissolved in 100 parts by weight of h-PP at a resin temperature of 240 ° C.

[Examples 2 to 7]
(B) Except having changed the kind of component into the kind of Table 1, it carried out similarly to Example 1 and obtained the polyolefin resin molding (test piece) of this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 1.

The following were used for (B) component of Tables 1-3.
Example 1, Examples 8 to 10, Example 12, Comparative Example 2, Comparative Example 8, Comparative Example 11; Mg _4.5 Al ₂ (OH) ₁₃ CO ₃ : Kyowa Chemical Industry Co., Ltd., trade name “DHT-” 4A "
Example _{2; Mg 4.5 Al 2 (OH} ) 13 CO 3: manufactured by Kyowa Chemical Industry Co., Ltd., trade name "DHT-4A2"
Example 3; Li ₂ Al ₄ (OH) ₁₂ CO ₃ .3H ₂ O: Mizusawa Chemical Co., Ltd.
Example _{4; Mg 4.5 Al 2 (OH} ) 13 CO 3 · 3.5H 2 O: manufactured by Kyowa Chemical Industry Co., Ltd., trade name "DHT-6"
Example 5: Mg _0.7 Al _0.3 O _1.15 : manufactured by Kyowa Chemical Industry Co., Ltd., trade name “KYOWARD 2100”
Examples 6 and 11; Mg ₃ Si ₄ O ₁₀ (OH) ₂ : manufactured by Nippon Talc Co., Ltd., trade name “Microace P-6”
Example 7: Mg (OH) ₂ : manufactured by Kyowa Chemical Industry Co., Ltd., trade name “Magsarat F”

[Example 8]
Except having changed the addition amount of (A) component and (B) component into the addition amount of Table 1, it carried out similarly to Example 1 and obtained the polyolefin-type resin molding (test piece) of this invention. . The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 1.

[Example 9]
(A) Except having changed the kind of component into the amide type compound prepared by the said manufacture example 2, it carried out similarly to Example 1 and obtained the polyolefin resin molding (test piece) of this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 1.
It was confirmed in advance that 0.15 parts by weight of PCT-CHA was dissolved in 100 parts by weight of h-PP at a resin temperature of 240 ° C.

[Comparative Example 1]
(B) Except not using a component, it carried out similarly to Example 1 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece were measured, and the measurement results are shown in Table 1.

[Comparative Example 2]
(A) Except not using a component, it carried out similarly to Example 1 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 1.

[Comparative Example 3]
In place of component (B), activated clay (chemical composition; “SiO ₂ = 71.6%, Al ₂ O ₃ = 14.3%, Fe ₂ O ₃ = 3.7%) which is an inorganic compound outside the present invention , MgO = 2.4%, CaO = 1.0%, Ig-Loss = 6.7% ”, manufactured by Mizusawa Chemical Industry Co., Ltd., trade name“ Mizuka Ace # 400 ”) It carried out similarly to Example 1 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 1.

[Comparative Example 4]
(B) Except not using a component, it carried out similarly to Example 8 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece were measured, and the measurement results are shown in Table 1.

[Comparative Example 5]
(B) Except not using a component, it carried out similarly to Example 9, and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece were measured, and the measurement results are shown in Table 1.

[Comparative Example 6]
Except not using (A) component and (B) component, it carried out similarly to Example 1 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece were measured, and the measurement results are shown in Table 1.

[Example 10]
Except that h-PP was changed to a polypropylene block copolymer (MFR = 18 g / 10 min, hereinafter abbreviated as “b-PP”), the same procedure as in Example 1 was carried out, and the polyolefin resin molded product of the present invention (Test specimen) was obtained. The crystallization temperature, bending elastic modulus and deflection temperature under load of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 2.
It was confirmed in advance that 0.15 parts by weight of PCT-2MeCHA was dissolved in 100 parts by weight of b-PP at a resin temperature of 240 ° C.

[Example 11]
(B) Except having changed the kind of component into the kind of Table 1, it carried out similarly to Example 10 and obtained the polyolefin-type resin molding (test piece) of this invention. The crystallization temperature, bending elastic modulus and deflection temperature under load of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 2.

[Comparative Example 7]
(B) Except not using a component, it carried out similarly to Example 10 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, and deflection temperature under load of the obtained test piece were measured, and the measurement results are shown in Table 2.

[Comparative Example 8]
(A) Except not using a component, it carried out similarly to Example 10 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus and deflection temperature under load of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 2.

[Comparative Example 9]
Except not using (A) component and (B) component, it carried out similarly to Example 10 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, flexural modulus, and deflection temperature under load of the obtained test piece were measured, and the measurement results are shown in Table 2.

[Example 12]
Except that h-PP was changed to polypropylene random copolymer (MFR = 20 g / 10 min, hereinafter abbreviated as “r-PP”), the same procedure as in Example 1 was carried out, and the polyolefin resin molded article of the present invention (Test specimen) was obtained. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 3.
It was confirmed in advance that 0.15 parts by weight of PCT-2MeCHA was dissolved in 100 parts by weight of r-PP at a resin temperature of 240 ° C.

[Comparative Example 10]
(B) component: Except not using an inorganic compound, it carried out similarly to Example 12, and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece were measured, and the measurement results are shown in Table 3.

[Comparative Example 11]
(A) Except not using a component, it carried out similarly to Example 12 and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece, and the pH value and particle size of the inorganic compound used were measured, and the measurement results are shown in Table 3.

[Comparative Example 12]
Except not using (A) component and (B) component, it carried out similarly to Example 12, and obtained the polyolefin resin molding (test piece) outside this invention. The crystallization temperature, bending elastic modulus, deflection temperature under load and haze value of the obtained test piece were measured, and the measurement results are shown in Table 3.

The polyolefin resin composition of the present invention can be suitably used for conventionally known injection molding, film molding, blow molding, extrusion molding, thermoforming and the like. In addition, since the resin molded body obtained by molding the polyolefin resin composition is excellent in crystallinity, rigidity, heat resistance, and transparency, it can be used for medical instruments, food and plant packaging, and various cases. It can be used as materials for foods, food packaging containers, microwave oven containers, miscellaneous goods, stationery, electrical / mechanical parts, automotive parts, and the like.

Claims (6)

For 100 parts by weight of the polyolefin resin and the polyolefin resin,
(A) component:
General formula (1)

[In the formula, ^{R 1} represents a residue obtained by removing all of the local Boki sill groups from 1,2,3-propane tricarboxylic acid or 1,2,3,4 butane tetracarboxylic acid. R ² is the same as or different from each other, and each represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
0.01 to 1 part by weight of at least one amide compound represented by formula (B) and component (B):
General formula (3)
_{Mg h Al 2 (OH) 2h} + 4 CO 3 · pH 2 O (3)
[Wherein h represents h ≧ 3. p represents 0 or a positive number. ]
The hydrotalcite represented by the above, the fired product of the hydrotalcite, and the general formula (4)
Li _1-X Al _X (OH) _{2 An} · mH ₂ O (4)
[In the formula, A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , It represents oxalate ion or salicylate ion. X represents a number from 0 to 0.9. n and m represent 0 or a positive number. ]
A polyolefin-based resin composition comprising 0.01 to 1 part by weight of at least one inorganic compound selected from the group consisting of lithium aluminum composite hydroxide salts represented by: The polyolefin resin composition according to claim 1, wherein the weight ratio of the component (A) to the component (B) is in the range of (A) component: (B) component = 1: 0.01-10.   A polyolefin resin molded product obtained by molding the polyolefin resin composition according to claim 1. For 100 parts by weight of the polyolefin resin and the polyolefin resin,
(A) component:
General formula (1)

[In the formula, ^{R 1} represents a residue obtained by removing all of the local Boki sill groups from 1,2,3-propane tricarboxylic acid or 1,2,3,4 butane tetracarboxylic acid. R ² is the same as or different from each other, and each represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
0.01 to 1 part by weight of at least one amide compound represented by formula (B) and component (B):
General formula (3)
_{Mg h Al 2 (OH) 2h} + 4 CO 3 · pH 2 O (3)
[Wherein h represents h ≧ 3. p represents 0 or a positive number. ]
The hydrotalcite represented by the above, the fired product of the hydrotalcite, and the general formula (4)
Li _1-X Al _X (OH) _{2 An} · mH ₂ O (4)
[In the formula, A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , It represents oxalate ion or salicylate ion. X represents a number from 0 to 0.9. n and m represent 0 or a positive number. ]
A method for improving the transparency of a polyolefin-based resin, comprising 0.01 to 1 part by weight of at least one inorganic compound selected from the group consisting of lithium aluminum composite hydroxide salts represented by the formula: For 100 parts by weight of the polyolefin resin and the polyolefin resin,
(A) component:
General formula (1)

[In the formula, ^{R 1} represents a residue obtained by removing all of the local Boki sill groups from 1,2,3-propane tricarboxylic acid or 1,2,3,4 butane tetracarboxylic acid. R ² is the same as or different from each other, and each represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
0.01 to 1 part by weight of at least one amide compound represented by formula (B) and component (B):
General formula (3)
_{Mg h Al 2 (OH) 2h} + 4 CO 3 · pH 2 O (3)
[Wherein h represents h ≧ 3. p represents 0 or a positive number. ]
The hydrotalcite represented by the above, the fired product of the hydrotalcite, and the general formula (4)
Li _1-X Al _X (OH) _{2 An} · mH ₂ O (4)
[In the formula, A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , It represents oxalate ion or salicylate ion. X represents a number from 0 to 0.9. n and m represent 0 or a positive number. ]
A method for improving the rigidity of a polyolefin-based resin, comprising 0.01 to 1 part by weight of at least one inorganic compound selected from the group consisting of lithium aluminum composite hydroxide salts represented by the formula: For 100 parts by weight of the polyolefin resin and the polyolefin resin,
(A) component:
General formula (1)

[In the formula, ^{R 1} represents a residue obtained by removing all of the local Boki sill groups from 1,2,3-propane tricarboxylic acid or 1,2,3,4 butane tetracarboxylic acid. R ² is the same as or different from each other, and each represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms. k represents an integer of 3 or 4. ]
0.01 to 1 part by weight of at least one amide compound represented by formula (B) and component (B):
General formula (3)
_{Mg h Al 2 (OH) 2h} + 4 CO 3 · pH 2 O (3)
[Wherein h represents h ≧ 3. p represents 0 or a positive number. ]
The hydrotalcite represented by the above, the fired product of the hydrotalcite, and the general formula (4)
Li _1-X Al _X (OH) _{2 An} · mH ₂ O (4)
[In the formula, A represents OH ⁻ , F ⁻ , Cl ⁻ , Br ⁻ , NO ₃ ⁻ , CO ₃ ²⁻ , SO ₄ ²⁻ , Fe (CN) ₆ ³⁻ , CH ₃ COO ⁻ , O ²⁻ , It represents oxalate ion or salicylate ion. X represents a number from 0 to 0.9. n and m represent 0 or a positive number. ]
A method for producing a polyolefin resin containing 0.01 to 1 part by weight of at least one inorganic compound selected from the group consisting of lithium aluminum composite hydroxide salts represented by: A method for producing a polyolefin resin composition, comprising a step of substantially completely dissolving a polyolefin resin.