JP2002097314A - Metal hydroxide resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a resin composition well balanced in a tensile elongation and a tensile strength even when a metal hydroxide is densely filled up. SOLUTION: A resin comprising (A) a polyolefin, (B) a metal hydroxide expressed by formula 1: Mg1-xMx(OH)2 (wherein, M is one or more kinds selected from the group of Mn, Fe, Co, Ni, Cw and Zn and x is 0-0.1) and the surface of which is not treated, (C) an amino group-containing organic silane compound and (D) an organic silane compound containing no amino group is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a polyolefin resin (hereinafter referred to as "PO") having high flame retardancy and mechanical properties.
And a flame retardant material used for, for example, vehicle interiors, curing sheets, home electric appliance parts, electric conduits, electric wire insulators, cable sheaths, and the like.

[0002]

2. Description of the Related Art Heretofore, PO flame-retarded with polyvinyl chloride or a halogen-based flame retardant has been used as such a flame-retardant material. However, with these halogen-containing materials, there is a concern about equipment corrosion due to a small amount of hydrogen halide generated during processing such as molding. On the other hand, in the case of a low-corrosion material in which a metal hydroxide is mixed with PO, it is necessary to fill a large amount of metal hydroxide of 50 parts by weight or more with respect to 100 parts by weight of PO from the viewpoint of flame retardancy. Therefore, there is a problem that various resin characteristics are significantly impaired. Therefore, the surface of the metal hydroxide is treated with fatty acids and their derivatives, phosphate esters,
There has been proposed a method of performing a surface treatment with a silane coupling agent, a titanate coupling agent, an aluminum coupling agent, an N-alkanoyl amino acid, or the like. However, even with such a surface treatment, mechanical properties, particularly tensile strength and elongation, were insufficient.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a PO-based flame-retardant material filled with a large amount of metal hydroxide and having high mechanical properties.

[0004]

Means for Solving the Problems The present inventors diligently studied the above problem, and surprisingly, by using a plurality of specific organic silane compounds, a large amount of the metal hydroxide can be obtained. It has been found that a flame-retardant material having high mechanical properties can be realized even if the material is filled into the glass, and the present invention has been completed.

That is, it is composed of the following A, B, C and D,
For 100 parts by weight of A, B is 50 to 300 parts by weight, and for 100 parts by weight of B, the total of C and D is 1-2.
0 parts by weight and the weight ratio of C / D is 1 / 99-99.
/ 1.

(A) Polyolefin.

(B) A metal hydroxide represented by the following formula 1 and not subjected to a surface treatment.

Mg _1-x M _x (OH) ₂ (Formula 1) [In Formula 1, M is Mn, Fe, Co, Ni, Cu,
It is at least one kind selected from Zn, and x has a value of 0 or more and 0.1 or less. (C) at least one selected from amino group-containing organosilane compounds having a structure represented by the following formula 2:

[0009] In _{^{R c l R d m SiX a}} n ( Equation 2) [Formula 2, l, m and n satisfy the l + m + n = 4, l is 0 to 2, m and n are an integer from 1 to 3 .
R ^c has one or more amino groups bonded thereto, and the covalent bond from the amino group to the Si is non-hydrolyzable;
When there are a plurality of R ^{c s} , they may be different or the same, or may be bonded to each other to form a ring structure. R ^d does not contain an amino group, the R ^d -Si bond is a non-hydrolyzable group, and when there are a plurality of R ^d ,
They may be different from each other or the same, or may be bonded to each other to form a ring structure. And X ^a X ^a -S
When the i bond is a hydrolyzable group and there are a plurality of X ^a , they may be different or the same, or may be bonded to each other to form a ring structure. In (D) one or more selected from amino group-free organosilane compound having a structure shown by the following formula 3 R ^e _k SiX ^b _h (Equation 3) [Equation 3, k and h satisfy the k + h = 4, k Is an integer of 0 to 3 and h is an integer of 1 to 4. R ^e is, R ^e -S
When the i-bond is a non-hydrolyzable group that does not contain an amino group and has a plurality of R ^e , they may be different from each other or the same, or may be bonded to each other to form a ring structure. . X ^b is a group in which the Si—X ^b bond is hydrolysable;
^When there are a plurality of ^b , they may be different from each other or the same, or may be bonded to each other to form a ring structure. Hereinafter, a more detailed description will be given.

The PO of the component A used in the present invention is a polymer containing an olefin as a monomer, and may be a single resin or a combination of plural kinds.

The olefin monomer referred to here is a hydrocarbon having a carbon-carbon double bond, and examples thereof include ethylene, propylene, butene, pentene, hexene, heptene and octene. In addition, not only these monoenes but also dienes such as butadiene, methylbutadiene, cyclopentadiene and ethylidene norbornene are exemplified. These monoenes and dienes include all structural isomers and geometric isomers with respect to carbon-carbon double bonds.

The component A may be a homopolymer composed of a single monomer or a copolymer composed of a plurality of monomers. All of the monomers of the copolymer need not necessarily be olefins, but may be any as long as olefins are used as part of the monomers. Further, a copolymer polymerized by a macromonomer method may be used.

[0013] Monomers that are not olefinic hydrocarbons (hereinafter, referred to as "olefins" together with olefinic hydrocarbons) have both a carbonyl group and a vinyl polymerizable functional group. Therefore, it is preferable because the metal hydroxide as the B component has a good filling property. Examples of the carbonyl group-containing compound include ketones, aldehydes, carboxylic acids, carboxylic esters, carboxylic amides, carboxylic anhydrides, and carboxylate salts. For example,
Fatty acid vinyls, acid anhydrides, salts, esters, amides of α, β-unsaturated carboxylic acids and α, β-unsaturated dicarboxylic acids,
Examples include imides and the like. Examples of such α, β-unsaturated carboxylic acids and derivatives thereof include (meth) acrylic acid, maleic acid, fumaric acid, 2-methyl-2- (Z) -butene dicarboxylic acid, and 2-methyl-2-carboxylic acid. (E) -Butene dicarboxylic acid, furan carboxylic acid, crotonic acid, isocrotonic acid, 2-pentene carboxylic acid and derivatives thereof are examples. Examples of the copolymer include an ethylene-vinyl acetate copolymer (hereinafter, abbreviated as “EVA”), an ethylene-methyl acrylate copolymer, an ethylene-ethyl acrylate copolymer (hereinafter, “EEA”), and an ethylene-vinyl acetate copolymer. Propyl acrylate copolymer, ethylene-butyl acrylate polymer, ethylene-isobutyl acrylate copolymer, ethylene-
Methyl (meth) acrylate polymer is an example of the component A that is easily industrially available.

The method for polymerizing these resins is not particularly limited. For example, radical polymerization, coordination polymerization, anionic polymerization, and cationic polymerization can be mentioned. Examples of the coordination polymerization include Ziegler catalysts, Ziegler-Natta catalysts, and various metal complex catalysts such as metallocene complexes and Brookhart complexes.

The component A may be obtained by graft-polymerizing another monomer to the homopolymer or copolymer of the above-mentioned olefins, or may contain the same. Such monomers for graft polymerization include carboxyl groups, epoxy groups, hydroxyl groups,
Compounds having a functional group such as an amino group and a vinyl-polymerizable functional group, alkenyl cyclic imino ether derivatives, organic titanate compounds having a vinyl-polymerizable functional group, organic silane compounds having a vinyl-polymerizable functional group, and the like. Can be

Examples of the compound having a carboxyl group and a vinyl polymerizable functional group include those exemplified as the monomers for the copolymerization.

Examples of the compound having an epoxy group and a vinyl polymerizable functional group include 2,3-epoxypropyl esters of various carboxylic acids exemplified as monomers for the above-mentioned copolymerization, and 5,6-epoxy-3. -Oxa-1-hexene, 6,7-epoxy-4-oxa-1-heptene, 1
-Ethenyl-4- (2,3-epoxypropyloxy)
Benzene, 1-ethenyl-4- (2,3-epoxypropyl) benzene and the like are exemplified. Compounds having a hydroxyl group and a vinyl polymerizable functional group include (meth)
Examples thereof include 2-hydroxyethyl acrylate, 1-hydroxypropyl (meth) acrylate, and 2-hydroxypropyl (meth) acrylate. Examples of the compound having an amino group and a vinyl polymerizable functional group include 2-dimethylaminoethyl (meth) acrylate and 2 (meth) acrylic acid.
-Diethylaminoethyl, 2-dibutylaminoethyl (meth) acrylate and the like. Examples of the alkenyl cyclic iminoniether derivative include 2-vinyl-2-oxazoline, 2-isopropenyl-2-oxazoline,
Vinyl-5,6-dihydro-4H-1,3-oxazine, 2-isopropenyl-5,6-dihydro-4H-
Examples thereof include 1,3-oxazine and the like. Examples of the organic titanate compound having a vinyl polymerizable functional group include tetraisopropenyl titanate and tetrabutenyl titanate. Examples of the organic silane compound having a vinyl polymerizable functional group include vinyltrimethoxysilane, vinyltriethoxysilane, and vinyltriacetylsilane.

As the component A, the above-mentioned homopolymer, copolymer or graft copolymer may be used alone, or a plurality of them may be used as a mixture. The binding ratio of carboxyl group-containing compounds such as fatty acid vinyl, (meth) acrylate and maleic anhydride to the whole component A is 10
It is preferable that the content is not less than% by weight because the metal hydroxide as the component B has a good filling property.

The B component used in the present invention has not been subjected to a surface treatment. Its chemical composition is shown by the above formula 1. That is, when x is 0, it is magnesium hydroxide, and when x> 0, it is a solid solution of magnesium hydroxide and a hydroxide of a +2 valent ion of a metal element M other than magnesium. M here means Mn, Fe, Co, N
At least one selected from i, Cu, and Zn. When x = 0, it is magnesium hydroxide itself, so that a white resin composition capable of toning to various colors is provided.
Further, when x> 0, a higher flame retardant effect can be obtained by the action of these M components, but even if x exceeds 0.1, the effect of the M components no longer increases. The solid solution structure does not necessarily need to be spread over the whole of the particles, and only the surface may be the solid solution. The filling amount of the component B is 50-30 per 100 parts by weight of the component A.
0 parts by weight. If the filling amount is less than 50 parts by weight, the mechanical properties are not significantly reduced due to the filling with the metal hydroxide-based flame retardant, so that the effect of the present invention is not remarkable. On the other hand, 300
If the amount is more than 10 parts by weight, the mechanical properties become insufficient even with the effects of the present invention.

In the present invention, component C, which is an organic silane compound containing an amino group, and component D, which is an organic silane compound containing no amino group, are used in combination. Both are compounds that can formally form a Si-OH structure by hydrolysis, and have a hydrolyzable group bonded to Si.

On the other hand, the C component and the D component are different with respect to a group having no hydrolyzability. The C component has at least one amino group bonded to a non-hydrolyzable group, and it is necessary that the amino group be retained even under conditions where the Si- ^Xa bond is hydrolyzed. Thereby, the tensile strength of the obtained resin composition increases. On the other hand, the non-hydrolyzable group of the component D does not contain an amino group. Thereby, the tensile elongation of the obtained resin composition increases.

As the C component, at least one selected from amino group-containing organic silane compounds having a structure represented by the following formula 2 is used.

[0023] In _{^{R c l R d m SiX a}} n ( Equation 2) [Formula 2, l, m and n satisfy the l + m + n = 4, l is 0 to 2, m and n are an integer from 1 to 3 .
R ^c has one or more amino groups bonded thereto, and the covalent bond from the amino group to the Si is non-hydrolyzable;
When there are a plurality of R ^{c s} , they may be different or the same, or may be bonded to each other to form a ring structure. R ^d does not contain an amino group, the R ^d -Si bond is a non-hydrolyzable group, and when there are a plurality of R ^d ,
They may be different from each other or the same, or may be bonded to each other to form a ring structure. And X ^a X ^a -S
When the i bond is a hydrolyzable group and there are a plurality of X ^a , they may be different or the same, or may be bonded to each other to form a ring structure. The amino group bonded to R ^c may be any of primary, secondary and tertiary, and may be an aliphatic amino group or an aromatic amino group. Also, one or more may be used. Further, the nitrogen atom of the amino group may form a heterocyclic ring. The heterocycle is not limited in its degree of unsaturation, from completely saturated to completely unsaturated. In order for the amino group to be retained even under conditions where the Si— ^Xa bond is hydrolyzed,
It is necessary that the covalent bond up to has no hydrolyzable structure. As R ^c in Formula 2, a 3-aminopropyl group, a 3-dimethylaminopropyl group, a 3- (2-
Examples thereof include an aminoethyl) aminopropyl group, a 3-ureidopropyl group, a 2- (4-pyridyl) ethyl group, a 2- (2-pyridyl) ethyl group, and a 2- (2-imidazolyl) ethyl group.

Some of the non-hydrolyzable groups bonded to Si of the component C may not contain an amino group.
As such groups R ^d, not only pure hydrocarbon group, an ester bond, ether bond, sulfide bond, an alcoholic hydroxyl group, or a hydrocarbon group containing a phenolic hydroxyl group. For example, methyl, ethyl, propyl, butyl, hexyl, octyl, decyl,
3-acetyloxypropyl group, 3-methoxypropyl group, 4-thiapentyl group, 3-hydroxypropyl group,
Examples thereof include a 2- (4-hydroxyphenyl) ethyl group.

X ^a in the formula (2) is a group in which the Si—X ^a bond is hydrolyzable, and examples of such a group include a halogen, an alkoxyl group or an aryloxyl group, an allyloxyl group, an alkanoyloxyl group, and an arylanoyloxyl group. However, the present invention is not limited to these.
In particular, those having an alkoxyl group, especially a methoxyl group or an ethoxyl group are preferred because they are industrially easy to obtain and have excellent storage stability.

As the C component, a component represented by the following formula 4 having a relatively small molecular weight is exemplified as a suitable component because the effect of improving the tensile strength can be obtained even with a smaller amount. More specific examples thereof include 3-aminopropyltriethoxysilane and 3-aminopropyltrimethoxysilane.

NH ₂ (CH ₂ ) ₃ Si (OR ′) ₃ (Formula 4) [In the formula 4, R ′ is an alkyl group or an aryl group. As the D component, at least one selected from amino group-free organic silane compounds having a structure represented by the following formula 3 is used.

[0028] In R ^e _k SiX ^b _h (Equation 3) [Equation 3, h and k satisfies h + k = 4, k is an integer of 0 to 3, h is 1 to 4. R ^e is, R ^e -S
i bond is non-hydrolysable, a group that does not contain an amino group, when R ^e is more, they may be the same or different from each other, also have a bond to ring structure Is also good. X ^b is a group in which the Si—X ^b bond is hydrolyzable, and when there are a plurality of X ^{b s} , they may be different or the same, or may be bonded to each other to form a ring structure. As R ^e is in] Formula 3, not only pure hydrocarbon group, an ester bond, ether bond, sulfide bond,
It may be a hydrocarbon group containing an alcoholic hydroxyl group, a phenolic hydroxyl group, or the like. For example, methyl, ethyl, propyl, butyl, hexyl, octyl, decyl, 3-acetyloxypropyl, 3-methoxypropyl, 4-thiapentyl, 3-hydroxypropyl, 2- ( 4-hydroxyphenyl) ethyl group and the like.

X ^b in the formula 3 is a group in which the Si—X ^b bond is hydrolyzable, and examples of such a group include a halogen, an alkoxyl group or an aryloxyl group, an allyloxyl group, an alkanoyloxyl group, and an arylanoyloxyl group. However, the present invention is not limited to these.
In particular, those having an alkoxyl group, especially a methoxyl group or an ethoxyl group are preferred because they are industrially easy to obtain and have excellent storage stability.

Above all, those having a simple alkyl group exemplified by the following formula 5 are preferred because the resulting resin composition has a high elongation.

C _i H _{2i + 1} Si (OR ″) ₃ (Formula 5) [In the formula 5, i is a natural number, and R ″ is an alkyl group or an aryl group. ] Further, when the number of carbon atoms of R ^e is 4 or more, but seems to be loss in the kneading process at a low volatility due to the relatively small, it is suitable because the effect of the elongation is improved conspicuous . On the other hand, a material having a relatively low molecular weight having 20 or less carbon atoms is preferable because the effect can be obtained even with a smaller amount.

If h in Equation 3 is 3, for example,
Octyltrimethoxysilane, decyltrimethoxysilane, dodecyltriethoxysilane, tetradecyltriethoxysilane, hexadecyltriethoxysilane, octadecyltriethoxysilane and the like can be mentioned.

[0033] Component D is a non-hydrolyzable group, there may be no R ^e. For example, the one shown by the following equation 6 is given.

Si (OR ^* ) ₄ (formula 6) [In formula 6, R ^* is an alkyl group or an aryl group. The amounts of the components C and D also depend on the specific surface area of the component B, but the total of both C and D is 1 to 20 parts by weight with respect to 100 parts by weight of the component B. When the amount is less than 1 part by weight, no improvement in mechanical properties, which is an effect of the present invention, is observed.
The effect of the present invention is not improved even if it is added in excess of parts by weight. The ratio of the C component to the D component is C / C on a weight basis.
D is in the range of 1 / 99-99 / 1. From this range C
If the component is small, the tensile strength among the mechanical properties is not sufficiently improved, and if the component C is too large, the tensile elongation becomes low.

The method for producing the resin composition of the present invention is not particularly limited. Specifically, a kneading method using an extruder, a Banbury mixer, a kneader, a roll, or the like is exemplified.
At the time of kneading, the C component and the D component may be simultaneously mixed, or a resin composition containing the C component and a resin composition containing the D component may be mixed and used.

Other flame retardants, antioxidants, pigments, fillers, cross-linking agents, cross-linking assistants, antibacterial agents and other auxiliary materials and additives are used in combination, as long as the spirit of the present invention is not impaired. May be.

Examples of other flame retardants include phosphorus-based flame retardants, nitrogen-based flame retardants, metal oxide-based flame retardants, metal complex salts, and metal hydroxide-based flame retardants other than the above-mentioned metal hydroxides. You.

As the phosphorus-based flame retardant, inorganic phosphorus-based substances,
Organic phosphorus compounds may be used. Examples of the inorganic phosphorus-based substance include red phosphorus and ammonium polyphosphate. Examples of the organic phosphorus compounds include melamine polyphosphate, melamine-modified ammonium polyphosphate, organic phosphates, organic phosphonates, organic phosphinates, organic phosphine oxides, organic phosphites, organic phosphites, organic phosphinites, and organic phosphines. Are listed. Organic phosphinates include 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide,
And derivatives utilizing the reactivity of the PH bond thereof. In addition, as organic phosphites, the following formula 7-1
0 is exemplified.

[0039]

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[0040]

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[0041]

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[0042]

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Examples of the nitrogen-based flame retardant include derivatives such as melamine and salts thereof, and (iso) cyanuric acid and derivatives thereof. For example, melamine (iso) cyanurate, melamine sulfate, and the like. Other examples include a condensate of (iso) cyanuric acid and polyethylene polyamine,
1, oligomers composed of repeating units of the formula 12 and the like are exemplified.

[0044]

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[0045]

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Examples of the metal oxide-based flame retardant include zinc borate, molybdenum borate, boric acid derivatives such as barium metaborate, and zinc stannate.

Examples of the metal complex salt include bis (acetylacetonato) nickel (II) and bis (hydroxyquinolinato) copper (II). Examples of metal hydroxide-based flame retardants include magnesium hydroxide, the surface of which has been treated with a fatty acid and its derivatives, phosphates, and the like, aluminum hydroxide and its surface-treated product, zinc hydroxystannate, and the like. Can be

Examples of the antioxidant include hindered phenols, phosphites, sulfides and the like.

The pigment may be organic or inorganic, and includes carbon black and the like.

Examples of the filler include calcium carbonate, titanium dioxide, talc, mica, various clays and the like.

The resin composition of the present invention may be crosslinked after molding. The methods include chemical crosslinking utilizing radicals generated by thermal decomposition of organic peroxides and the like, radiation crosslinking for irradiation with ionizing radiation, and organic silane compounds having a hydrolyzable group and a functional group to which a radical can be added. Is bonded to the A component to form a Si—O—Si bond by the action of water or moisture. In particular, in the case of the former two methods, a crosslinking assistant having a plurality of functional groups to which a radical can be added, such as triallyl (iso) cyanurate, may be used in combination. In the case of the water crosslinking, a catalyst such as an organotin compound may be used.

[0052]

Next, the present invention will be described with reference to examples and comparative examples, but the present invention is not limited to these examples.

[(A) PO] Table 1 is shown in Examples and Comparative Examples.
Was used.

[0054]

[Table 1]

[(B) Metal hydroxide] (B1) Magnesium hydroxide prepared by the method described in Example 1 of JP-B-63-48809. The specific surface area measured by the BET method was 7.2 m ² / g.

(B2) Magnesium hydroxide whose surface has been treated with sodium oleate. Made by Kyowa Chemical Industry Co., Ltd., trade name Kisuma 5B.

[Preparation of Resin Composition] A component was wound around an open roll at 120 ° C., and three components B1, C and D were added simultaneously and kneaded to obtain a resin composition. The composition is shown in Table 2.

[(C) Amino group-containing organic silane compound] (C1) 3-Aminopropyltriethoxysilane (C2) 2- (4-pyridyl) ethyltriethoxysilane [(D) Amino group-free organic silane compound] (D1) Decyltriethoxysilane (D2) Tetraethoxysilane [Evaluation] The resin composition prepared by the above method was compression-molded to prepare a JIS K 7113 No. 2 type test piece.
A tensile test was performed at 00 mm / min. The results are shown in Table 2. In Table 2, the tensile strength is the higher of the yield strength and the breaking strength.

[Examples 1-5 and Comparative Examples 1-4] EVA having a vinyl acetate content of 25% by weight as an A component (A
3) Magnesium hydroxide (B1) not subjected to surface treatment as the B component, 3-aminopropyltriethoxysilane as the C component, decyltrimethoxysilane as the D component, and 200 parts of B1 for 100 parts by weight of A3. When the total amount of the C component and the D component and the weight ratio of the C component and the D component are within the range of the present invention, the tensile elongation as high as 150% or more and 10 MPa
The resin composition having the above high strength was obtained (Example 1-).
5). However, either the C component or the D component was not used (Comparative Example 1), or neither was used (Comparative Example 2,
3) Elongation and strength were not compatible. Therefore, it is understood that the combined use of the C component and the D component is necessary for achieving the effects of the present invention. However, when the total amount is less than the range of the present invention (Comparative Example 4) and when the total amount is larger (Comparative Example 5),
Again, elongation and strength were not compatible [Comparative Examples 6, 7] In the case of using only a surface-treated metal hydroxide (B2), which is generally used as a flame retardant, as a B component (Comparative Example 6), It can be seen that even when both C and D components of the present invention are added (Comparative Example 7), the effects obtained by the method of the present invention cannot be obtained.

[Example 6-8, Comparative example 8-10] If the amount of metal hydroxide falls within the range of the present invention (Example 6-6)
8) The effect of the C component and the D component appears, and both elongation and strength are compatible. However, when the amount of metal hydroxide was small (Comparative Examples 8 and 9), they were almost the same regardless of the presence or absence of the C component and the D component. On the other hand, when the amount of the metal hydroxide is too large, the elongation and the strength are already remarkably low (Comparative Example 10).

[Examples 9-12] In the case where the component C has a pyridylethyl group (Example 9), the case where the number of hydrolyzable groups of the component D is 4 per Si atom (Example 1)
0) and even when the type of the component A is changed to those having a low vinyl acetate content (Examples 11 and 12), it is possible to achieve both elongation and strength within the scope of the present invention. I understand.

[0062]

[Table 2]

[0063]

An excellent resin composition having both tensile elongation and tensile strength is obtained by simultaneously kneading a polyolefin and an untreated surface metal hydroxide with an amino group-containing organic silane compound and an amino group-free organic silane compound. Things are obtained.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J002 BB011 BB031 BB051 BB061 BB071 BB081 BB091 BB121 BB171 BK001 BL011 BL021 DE076 DE096 DE106 DE116 EX038 EX077 FD130 FD136 FD207 FD208

Claims (3)

[Claims] 1. A method comprising the following A, B, C and D:
B is 50 to 300 parts by weight with respect to 0 parts by weight of A,
The total of C and D is 1-20 parts by weight with respect to 100 parts by weight of B, and the weight ratio of C / D is 1 / 99-99 / 1.
The resin composition in the range of. (A) Polyolefin. (B) A metal hydroxide represented by the following formula 1 and not subjected to surface treatment. Mg _1-x M _x (OH) ₂ (Formula 1) [In Formula 1, M is Mn, Fe, Co, Ni, Cu,
It is at least one kind selected from Zn, and x is a value of 0 or more and 0.1 or less. (C) at least one selected from amino group-containing organosilane compounds having a structure represented by the following formula 2: In ^{_{R c l R d m SiX a}} n ( Equation 2) [Formula 2, l, m and n satisfy the l + m + n = 4, l is 0 to 2, m and n are an integer from 1 to 3.
R ^c has one or more amino groups bonded thereto, and the covalent bond from the amino group to the Si is non-hydrolyzable;
When there are a plurality of R ^{c s} , they may be different or the same, or may be bonded to each other to form a ring structure. R ^d does not contain an amino group, the R ^d -Si bond is a non-hydrolyzable group, and when there are a plurality of R ^d ,
They may be different from each other or the same, or may be bonded to each other to form a ring structure. And X ^a X ^a -S
When the i bond is a hydrolyzable group and there are a plurality of X ^a , they may be different or the same, or may be bonded to each other to form a ring structure. In (D) one or more selected from amino group-free organosilane compound having a structure shown by the following formula 3 R ^e _k SiX ^b _h (Equation 3) [Equation 3, h and k satisfies h + k = 4, k Is an integer of 0 to 3 and h is an integer of 1 to 4. R ^e is, R ^e -S
When the i-bond is a non-hydrolyzable group that does not contain an amino group and has a plurality of R ^e , they may be different from each other or the same, or may be bonded to each other to form a ring structure. . X ^b is a group in which the Si—X ^b bond is hydrolysable;
^When there are a plurality of ^b , they may be different from each other or the same, or may be bonded to each other to form a ring structure. ] 2. The resin composition according to claim 1, wherein the component C is an organic silane compound containing an amino group represented by the following formula 4. NH ₂ (CH ₂ ) ₃ Si (OR ′) ₃ (Formula 4) [In Formula 4, R ′ is an alkyl group or an aryl group. ] 3. The resin composition according to claim 1, wherein the D component is at least one selected from organic silane compounds not containing an amino group represented by the following formulas 5 and 6. object. C _i H _{2i + 1} Si (OR ″) ₃ (Formula 5) [In Formula 5, i is a natural number, and R ″ is an alkyl group or an aryl group. Si (OR ^* ) ₄ (Formula 6) [In Formula 6, R ^* is an alkyl group or an aryl group. ]