JPS6049045A - Olefin polymer composition - Google Patents

Abstract

PURPOSE:To obtain titled composition of high adhesivity and coatability, with excellent processability and rigidity, by incorporating an olefin polymer with OH-contg. organic compound, organic peroxide, and specific inorganic filler followed by heat treatment. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of an olefin polymer with (B) 0.1-50pts.wt. of an organic compound having in one molecule one or more unsaturated bond and hydroxyl group (e.g., 2-hydroxyethyl acrylate, 3,6-dimethyl-4-octyne-3,6-diol), (C) 0.01-20.0pts.wt. of an organic peroxide (pref. with 1min half life at >=130 deg.C) and (D) 20-90wt%, based on the whole composition, of inorganic filler with a density >=2.0 (pref. >=2.2)g/cm<3> (except glass fiber, graphite, carbon fiber and mica in single use, respectively) followed by heat treatment at such temperatures as to cause the decomposition of the component (C), but below 300 deg.C. The density of the final composition is pref. >=1.2g/cm<3>.

Description

[Detailed description of the invention] [■] Purpose of the invention The present invention relates to olefinic polymer compositions.

More specifically, (A) olefin polymer, (B)
An olefin-based compound consisting of an organic compound having at least one unsaturated bond and a hydroxyl group in the molecule, (C) an organic peroxide, and (D) an inorganic filler with a density of 2.0 g/cm3 or more This relates to a composition obtained by treating a polymer mixture at a temperature of 300°C or lower, which is the temperature at which the organic peroxide decomposes. The object of the present invention is to provide these articles which have extremely good adhesion and good rigidity.

[ll] Background of the Invention As is well known, olefin resins have excellent moldability and good properties such as mechanical strength, heat resistance, solvent resistance, and chemical resistance, so they are widely used in industrial applications. It is manufactured in the United States and used in many fields as a general-purpose resin. However, olefin resins do not have polar groups in their molecules and have extremely low solubility in solvents, so when used in fields such as painting and adhesives,
Very poor paintability and adhesion.

As mentioned above, although olein-based polymers have excellent moldability and the above-mentioned properties, olefin-based polymers are used in fields where good adhesion and paintability are required (e.g., automobile parts, home appliance parts). The use of olefin-based polymers has naturally been limited.In order to solve the problems of adhesion and coating properties of olefin-based polymers, various methods have been proposed for quite some time, such as those described below.

(a) A method of externally surface-treating an olefin polymer or its molded product and modifying it by a physical or chemical treatment method (hereinafter referred to as "modification method") (b) Adding other polymeric substances or materials to the olefin polymer method of adding agents.

Hereinafter, among these methods, the modification method will be explained in more detail and problems will be described.

This method includes ``flame treatment method, plasma treatment method, ozone treatment method, corona discharge treatment method, and irradiation treatment method using ultraviolet rays or electron beams'' [hereinafter referred to as ``denaturation method (a)''.
] and [method of treatment using a mixed solution of chromic acid and mineral acids such as concentrated sulfuric acid, and using a compound containing a polar group in the olefin polymer or its molded product in the presence or absence of a crosslinking agent. A method of chemical treatment such as grafting (hereinafter referred to as "denaturation method (b)") is mentioned below.

These modification methods impart chemically active sites rich in polar groups to the surface of the olefin polymer or its molded product, thereby physically roughening the surface. As a result, it is thought that the effects of improved paintability and adhesiveness can be obtained.

However, in order to carry out this modification method (a), the shape of the molded object to be treated is significantly limited, and furthermore, not only is the treatment effect significantly reduced over time by leaving it after the treatment, but also the In many cases, the preparation is not always sufficient. Moreover, it has disadvantages such as being economically disadvantageous because it requires various expensive processing equipment.

Of the modification methods (b), the treatment method using mineral acids not only tends to cause pollution due to the chemicals used, but also requires complicated post-treatment steps such as neutralization, water washing, and drying. It is. Furthermore, even chemical treatment methods such as grafting require a drying step, require careful consideration of monomer application, grafting atmosphere, etc., and the grafting reaction time is relatively long. Therefore, the disadvantages such as not being suitable for continuous production are overcome.

As described above, although the modification methods can improve the paintability and adhesion to some extent, it is difficult to say that these methods are satisfactory improvement methods because they have various drawbacks.

Furthermore, as a method for imparting paintability and adhesion to the surface of a molded product made of olefinic polymer, the surface of the molded product is coated with chlorinated polypropylene or anhydrous maleic H (r r raft polymerized) before applying a paint or adhesive. A method has been developed in which a primer is coated with a JJV component mainly composed of a polyolefin or the like.

However, in the method of applying a primer, the cost increases because one additional step of coating or adhesion is required.

Including the above, olefinic polymers, modified products and mixtures (compositions) thereof that do not impair the above-mentioned properties and processability of olefinic polymers and have good adhesiveness and paintability are Structure of the Invention Based on the above, the present inventors have searched for ways to produce olefin polymers and olefin polymer mixtures with excellent paintability and adhesive properties. , (A) an olefin polymer, (B) "having at least one unsaturated bond in the molecule,"
and an organic compound containing a hydroxyl group (hereinafter referred to as a "hydroxyl compound"), (C) an organic peroxide, and (D) an olefinic filler containing an inorganic filler with a density of 2.0 g/cx' or more. It is a composition obtained by treating a mixture of polymers at a temperature of 300°C or lower, which is the temperature at which the organic peroxide decomposes, and the composition ratio of the inorganic filler in the composition is 20 to 300°C. The mixing ratio for 100 parts by weight of the olefin polymer is 0.1 to 50 parts by weight of the hydro A-/L compound, and 0.01 to 20.0 parts by weight of the organic peroxide. However, glass fiber, graphite, carbon fiber, and mica are not used individually.Olefin polymer compositions have the above-mentioned drawbacks and do not adhere firmly to paint regardless of the type. They discovered this and arrived at the present invention.

(1) It is possible to obtain an excellent coated material or bonded material without carrying out the above-mentioned modification of the surface as conventionally done.

(2) Since a paint having an isocyanate group can be applied directly to the surface of a molded product without applying a primer in advance, a coated product with good oil resistance can be obtained.

(3) It is ideal as a core material for various parts that require high rigidity, and by applying the above coating, it is possible to obtain molded products with good oil properties and high rigidity. can.

The mixture obtained according to the present invention can be used in a wide variety of ways to achieve the above-mentioned effects.

Typical usage examples are shown below.

(1) Automotive parts such as pants, instrument panels, armrests, door liners, sort packs, duct covers, etc. (2) Home appliance parts such as the interior and exterior of coolers and refrigerators (3) Roots quenelles, insulation walls Housing materials such as (4
) Dining tables, desk surfaces, furniture/P-panels, kitchen cabinets,
Daily necessities such as ice boxes, furniture (5) Freezer components such as interior materials for refrigerated trucks and freezer walls (6) Cabinets for audio equipment [■] Detailed description of the invention) Olefin polymers Olefin polymers used in the present invention Polymers include homopolymers of ethylene, homopolymers of propylene, random or block copolymers of ethylene and propylene, and ethylene and/or propylene with other α-olefins having at most 12 carbon atoms. Examples include random or block copolymers (the copolymer network of α-olefin is at most 20% by weight). Melt index of these olefin polymers (JIS K-676
According to 0, the temperature is 190℃ and the load is 2.16k.
The melt flow index (according to JIS K-6758, measured at a temperature of 230°C and a load of 2.16 kg, hereinafter referred to as rMI4J) is 001. ~100g
/10 minutes is preferred, especially 0.01-80g
/10 minutes is suitable. M, 1. If an olefin polymer with an MFI of 0.001.9/] or less than 0 minutes is used, not only will the resulting composition be poor, but also the composition will not be homogeneous due to the poor melt crosstalk described below. It becomes difficult to obtain things. On the other hand, if an olefin polymer with a weight exceeding 100 g/10 minutes is used, the melt cross-mixability and moldability are excellent, but the mechanical properties of the resulting molded product are poor. 1.Low density (0,900g/cm3)
or high density (0,980 g/C1n3) ethylene homopolymer, propylene homopolymer, random or block copolymer of ethylene and propylene, and random or block copolymer of ethylene or propylene with other α-olefins. Polymers are preferred.

These olefinic polymers are produced by using a catalyst system (so-called Ziegler catalyst) obtained from a transition metal compound and an organoaluminum compound, and by supporting a chromium compound (e.g., chromium oxide) on a carrier (e.g., Soriyoku). It can be obtained by homopolymerizing or copolymerizing an olefin using the resulting catalyst system (so-called Philizos catalyst) or a radical initiator (for example, an organic peroxide).

Furthermore, the present invention also includes modified polyolefins obtained by graft polymerizing a compound having at least one double bond (for example, an unsaturated carboxylic acid or a vinyl silane compound) to these olefin polymers.

These olefin polymers and modified polyolefins may be used alone or in combination of two or more. Furthermore, two or more of these olefin polymers and modified polyolefins may be used as a resin blend in any proportion.

The production methods for these olefin polymers and modified polyolefins are well known.

(B) Hydroxyl compound Furthermore, the hydroxyl compound used in the present invention contains at least one unsaturated bond (double bond, triple bond)'
f: is a compound having the following and containing a hydroxyl group. Typical examples include alcohols with double bonds, alcohols with triple bonds, esters of -valent or divalent unsaturated carboxylic acids and unsubstituted dihydric alcohols, and alcohols with unsaturated carboxylic acids and unsubstituted dihydric alcohols. Examples include esters with unsubstituted trihydric alcohols, esters with unsubstituted trihydric alcohols, and esters with unsubstituted alcohols having a higher valence.

Preferred representative examples of alcohols having a triple bond are those whose general formula is represented by the following formula [Formula (I)].

In formula (1), R1 and R may be the same or different, and are a hydrogen atom or a hydrocarbon group having 1 to 24 carbon atoms.

Representative examples of desirable alcohols having a triple bond are those whose general formula is represented by the following formula [formula (■)].

(R" -c=c-RcytoOH (III) In the formula (II), R and R may be the same or may be hydrogen, and are a hydrogen atom or a hydrocarbon group having 1 to 24 carbon atoms.

Further, the ester of an unsubstituted dihydric alcohol and an unsaturated carboxylic acid is an ester of a monovalent unsaturated carboxylic acid and a non-1δ-substituted dihydric alcohol, and a representative example of a preferable one is the general formula: It is expressed by the following formula [measurement].

In formula (2), R5 is an unsaturated hydrocarbon group having 2 to 24 carbon atoms, and R6 is a hydrocarbon group having 2 to 24 carbon atoms.

Sarah, unsubstituted trihydric alcohol and unsaturation power/l/yl
? The ester of phosphoric acid is an ester of monovalent unsaturated phosphoric acid and unsubstituted trihydric alcohol, and a typical example of a desirable one has the general formula shown below. It is something.

In 2, R7 is an unsaturated hydrocarbon group having 2 to 24 carbon atoms, and R6 is a hydrocarbon group having 2 to 24 carbon atoms.

Also, the ester of non-value converted tetrahydric alcohol and unsaturated carboxylic acid is monovalent unsaturated carboxylic acid 7J? Representative examples of preferred esters of phosphoric acid and unsubstituted tetrahydric alcohols and 1.
The general formula is represented by the following formula [Formula M].

(In the Vt formula, R9 is an unsaturated hydrocarbon group having 2 to 24 carbon atoms, and R10 is a hydrocarbon group having 2 to 24 carbon atoms.

Furthermore, the ester of a non-1iilt-converted pentavalent or higher alcohol and an unsaturated orocal rtonic acid is an ester of -1 As representative fll, the-
The five-χ formula is expressed by the following formula.

In the formula (b), n is 4 or more, ull is an unsaturated carboxylic acid group having 2 to 24 carbon atoms, and u12
is a carbon-hydrocarbon group with 2 to 60 carbon IA&.

Furthermore, as other esters, esters of carboxycarboxylic acid and unsubstituted polyhydric alcohol are preferred.
) In the formula, m is 1 or more, u13 is an unsaturated hydrocarbon group having 2 to 50 carbon atoms, and R14 is an unsaturated hydrocarbon group having 2 to 50 carbon atoms. 2 to 100 hydrocarbon groups.

Typical examples of these hydroxyl compounds are listed in the specifications of Japanese Patent Application No. 1983-36502 and No. 57-49065, as well as in the "Handbook of Existing Chemical Substances" (Kagaku Kogyo Nippo Publishing Co., Ltd., published in 1978) based on the Ministry of International Trade and Industry. Supervised by the Chemical Safety Division of the Industrial Bureau, 2nd edition, pages 25, 27th to 28th
Pages 50 to 55 and 57 to 5
It is described on page 8.

Among the hydroxyl compounds used in the present invention,
Representative examples of suitable ones include 3-hydroxy-1-propene, 4-hydroxy-1-butene, cis-4-hydroxy-2-butene, trans-4-hydroxy-2-butene.
Butene, 3-human90 quin-2-methyl-1-zolodone, cis-5-hydroxy-2-4-ethene, trans-5
-Hydroxy-2-butene, cis-1,4-zohto90quin-2-butene, trans-1,4-dihythyl-7-2-butene, 2-hydroxyethyl acrylate-1
・, 2-hydroxyethyl methacrylate, 3-hydroxypropyl acrylate, 3-hydropyl methacrylate, 2-hydroxyethyl crotone)
, 2.3.4.5.6--z-tantahydroxyhexyl acrylate, 2,3,4,5.6--z-tahydroxyhexyl methacrylate, 2.3.4. ．． 5-tetrahydrokymenteteteracrylate and 2,3,4
．． 5-f), 7-hydroxybentyl methacrylate.

(C) Organic peroxide Furthermore, the organic peroxide used in the present invention is generally used as an initiator in radical polymerization and a crosslinking agent for polymers, and has a half-life of 1 minute.
The temperature is preferably 130°C or higher, particularly 130°C or higher. For the above temperature below 100℃,
Not only is it difficult to handle, but it is also undesirable because there is no discernible effect when using it. Representative examples of preferred organic peroxides include ketone peroxides such as l,1-bis-tertiary-butyloxy-3,3,5-trimethylcyclohexane, sialicyl peroxides such as dicumyl peroxide, oxides, hydroperoxides such as 2,5-nomethylbexane-2,5-hydroperoxide, noarsilver oxyl-'' such as penzoylno-P-oxide, and 2,5-tumethyl-2,5
- Peroxy esters such as nobenzoyl peroxyhexane are destroyed.

(2) Inorganic filler The inorganic filler used to produce the composition of the present invention is one commonly used in the field of synthetic resins and rubbers. Its density is 2,0117 cm' or more, particularly preferably 2.217 am3 or more. Furthermore, it is desirable that the material does not react with oxygen and water.
Moreover, those that do not decompose during kneading (300° C. or lower) are preferably used.

The inorganic fillers include metals such as aluminum, copper, iron, lead and nickel, and oxides of these metals and metals such as magnesium, calcium, dimonium, zinc, norconium, molybdenum, silicon, antimony, and titanium. , its hydrates (hydroxides), sulfates, carbonates,
It is broadly classified into compounds such as silicates, their double salts, and mixtures thereof. Typical examples of the inorganic fillers include the metals mentioned above, aluminum oxide (alumina), its hydrates, water and oxides of lead such as white lead, magnesium carbonate, calcium carbonate, basic magnesium carbonate, and hydroxide.
7 What about Il-car? Asbestos, tar, glass delicate, glass powder, glass beads, clay, diatomaceous earth, silica, wollastonite, titanium oxide (titania), sl, ]? hmm,
Examples include pumice powder, aluminum sulfate, calcium sulfate (including gypsum), zirconium silicate, norconium oxide, barium carbonate, barium sulfate, dolomite, molybdenum disulfide, and iron sand. Among these inorganic fillers, those in powder form preferably have a diameter of 1 nm or less (preferably 0.5 nm or less).

In addition, in the case of fibrous materials, the diameter is 1 to 500 microns (preferably 1 to 200 microns), and the length is 01 to 67 microns.
A thickness of 1 Im (preferably 0.1 to 5 mm) is desirable. Furthermore, flat plate-shaped items have a diameter of 2 mm or less (
1 mm or less) is preferable.

(E) Composition ratio The composition ratio of the inorganic filler in the composition of the present invention is 20
-90% by weight, preferably 20-80% by weight, particularly preferably 25-75% by weight. The composition ratio of the inorganic filler in the composition is 20 times JM. If it is less than 50%, the effect of improving rigidity is poor, so it is not preferable. On the other hand, 90
If the weight limit is exceeded, it will be difficult to produce a homogeneous composition, and even if a homogeneous composition is obtained, the moldability will be poor and the molding will be difficult. Not only is the appearance of the object poor, but also the mechanical strength (M+strength) is poor.

The mixing ratio of the hydroxyl compound to 100 parts by weight of the olefin polymer is 0.1 to 50 parts by weight, preferably 0.62 to 30 parts by weight, preferably 1.
20 parts by weight is preferred. The mixing ratio of hydroxyl compound to 100 parts by weight of olefin polymer is 0.1
Below parts by weight, the effect of improving adhesion is insufficient. On the other hand, even if 50 parts by weight or more is used, the effect of improving adhesion depending on the amount used is not observed, and rather the original properties of the olefin polymer are impaired, which is not preferable.

Furthermore, the mixing ratio of the organic peroxide to 100 parts by weight of the olefin polymer is 0.01 to 20 parts by weight,
0.05 to 10 parts by weight is desirable, and 0.01 to 7 parts by weight is particularly preferred. If the mixing ratio of the organic peroxide to 100 parts by weight of the olefin polymer is 0.01 parts by weight or less, not only the effect of improving adhesion is low, but also the durability of the adhesion strength of the mixture is reduced. On the other hand, if the amount is 20 parts by weight or more, the originally excellent mechanical properties of the polymer are deteriorated, so this is not desirable in any case.

(F) Production of composition To produce the composition of the present invention, an olefinic polymer,
It is better to uniformly mix the hydroxyl compound, organic peroxide, and the inorganic filler within the mixing ratio range described above. It can be produced by melt-kneading an organic peroxide by the method described below to produce a treated product (graft product), and uniformly mixing the obtained treated product and an inorganic filler. Furthermore, a composition in which the graft product and the inorganic filler are homogeneous may be produced by melt-kneading all the composition components.

Alternatively, a so-called masterbatch may be produced by mixing some of the composition components in advance, and this masterbatch and the remaining composition components may be produced to produce a composition having the above-mentioned blended components.

The composition may also consist of an olefinic polymer, a hydroxyl compound, an organic peroxide, and the inorganic filler, but depending on the intended use of the composition, these mixed components may be further treated with oxygen, heat, and stabilizer against ultraviolet light,
Metal deterioration inhibitors and difficult additives may be mixed as long as they do not impair the properties of the mixture of the present invention.

This composition is manufactured by melt-kneading using a mixer commonly used in the olefin polymer industry such as a screen IJ, a one-piece extruder, a pan cream mixer, a kneader, and a roll mill. be able to. At this time, a more uniform composition can be produced by tri-blending using a mixer such as a Hennel mixer and further melting and kneading the resulting mixture.

This melt kneading must be carried out at a temperature at which the organic peroxide used decomposes. If the temperature is lower than this, the hydroxyl compound will not be completely graft-polymerized to the olefin polymer, and a composition with good adhesion will not be obtained. is undesirable because it leaves some residue behind. On the other hand, 3o
If the temperature exceeds 0°C, the olefin polymer may deteriorate. For the above reasons, although it differs depending on the type of organic peroxide used, this melt kneading is generally carried out at 150 to 300°C, particularly at 160 to 300°C.
Preferably, it is carried out at °C.

The density of the composition thus produced is J.

b, etc., preferably 1.1 g/cm or more, and particularly preferably 2 jj/cm3 or more.

Even if the density is 1. (Molding using a composition less than J'//cnl' is not preferable because the rigidity is low.

Further, when the resulting composition is used as a cabinet for audio equipment, a composition having a density of 1.2 g/cm 3 or more is particularly desirable from the viewpoint of sound insulation properties.

(G) Molding method The composition thus produced is processed into various molded products by processing methods commonly used in the field of olefin polymers, such as extrusion molding, injection molding, and press molding. Bye.

At this time, it is necessary to conduct the reaction at a temperature higher than the temperature at which the modified olefin polymer (graft product) obtained as described above melts. However, if carried out at a considerably high temperature, the olefin polymer may deteriorate, so naturally it must be carried out at a temperature below which decomposition occurs (300°C).

(iI) Coating method etc. Applying incyanate to the surface of the molded product obtained as above.
The object of the present invention can be achieved by uniformly applying a paint having a 1-group, Zolaimer, or an acrylic paint to a thickness of 1 to 500 microns (when dry). The application method is not a special method, but it is sufficient to apply a method that is generally used on the surface of metal or synthetic resin molded objects. Typical methods include applying with a spray gun and applying with a brush. Examples include a coating method and a method of applying using a roll coater.

According to the present invention, it is possible to obtain a molded article that not only has excellent adhesion and gloss on the coated surface, but also has excellent weather resistance and gasoline resistance when coated with urethane, for example, and is therefore suitable for use in automobiles. It can be applied to parts, etc.

It is also suitable for metallization, lamination of different materials, etc. by utilizing the applied coating film having an incyanate group.

Next, for adhesion using an adhesive, an adhesive having an incyanate group (for example, a solvent-based urethane adhesive or a water-based vinyl urethane adhesive) is applied to the surface of the obtained molded product, and the adhesion surface is covered with an adhesive having an incyanate group. The bonded body of the present invention can be obtained by bonding shapes of bondable substances with an adhesive.

These substances include metals (e.g. aluminum, iron, copper, and their alloys), glass, paper, fiber water, leather, etc.
・- (for example, neoplastic rubber, urethane rubber, butadiene rubber, natural rubber), polar group-containing resins (for example, Al3S resin, polyester, polyamide, acrylonitrile, the above-mentioned olefin polymers) In addition, the shaped objects include thin objects (for example, foils, papers, films), sheet-like objects, 71-rod-like objects, plate-like objects, tube-like objects, rod-like objects, container-like objects, Spherical objects, foil objects,
Other examples include those with complicated shapes. moreover,
It is not limited to two layers, and multiple layers are also possible.

Sarani 1. I? Regarding urethane foam, the laminate of the present invention can be produced by simultaneously carrying out the urethane polymer production reaction and foaming on the surface of the molded product.

In manufacturing this laminate, no special equipment or special method is required. Sunawachi,
Foaming methods commonly used in the field of polyurethane foam manufacturing such as injection foaming, mold foaming, and spray foaming may be used. Furthermore, the polyol, incyanate compound, blowing agent, etc. used as raw materials for polyurethane foam do not need to be special, and any commonly used ones may be used without any limitation.

In addition, in performing the above-described coating, adhesion, and lamination, the surface of the molded product may be cleaned or degreased in the previous step in the conventional methods. The main purpose of this is to remove surface stains caused by oils and fats, eliminate variations in adhesion, and further improve adhesion. Specific examples include wiping with an organic solvent such as isopropyl alcohol, toluene, or trichlene; or, for large molded items, immersing them in such organic solvents under heating or treating them with heated steam. can give. These degreasing and cleaning steps can be similarly applied to the molded product obtained according to the present invention.

Furthermore, the same effects as before can be expected without being affected in any way.

[■Examples and Comparative Examples The present invention will be explained in more detail with reference to Examples below.

In addition, in the Examples and Comparative Examples, the paint film peeling strength test was performed by cutting out a test piece on a strip with a width of 10 mm from the test piece.
After forcibly peeling off a portion of the coating film from one end of the specimen, a tensile tester used for tensile testing of plastics was used at a tensile speed of 50 mR/min and a peeling angle of 180 mr/min.
The coating film was peeled off at a temperature of 20°C and the peel strength at that time (j; l/10in) was determined. To determine the adhesive strength, a molded product of a mixture of olefin polymers was cut out into a 1010 ff1 x 2 rectangle, and an adhesive was applied to the end of the 3 ctrt x 2 am portion. A molded article of the olefin polymer composition obtained in the example or comparative example was attached to this adhesive part, and the tensile shear core force at the time of tensile stress and fracture was measured at a tensile speed of 50 mmZ. Furthermore, the adhesion strength between the molded product and the polyurethane foam was determined by injecting and foaming the polyurethane foam between flat test specimens arranged in parallel with an interval of 1 cTL, and then using the sandwich-like test. One sample was cut to a size of 1 cm x 1 cm, and the upper and lower molded parts of the sample were held between the crosshead of a tensile tester, and the tensile speed was 5 mm 1 min in the direction perpendicular to the contact surface. The strength at which the sample breaks was measured and determined as adhesion strength (kg/CTL2). Still, stiffness is measured using flexural modulus, and AS
Measured according to TM D-'790.

The physical properties and types of the olefin polymer, hydroxyl compound, organic peroxide, and various inorganic fillers used in Examples and Comparative Examples are shown below.

[Propylene homopolymer]

As an olefin polymer, the density is 0.900.9/sieve
A propylene homopolymer [hereinafter referred to as r PP (1) J] which is made of aluminum and has an MFI of 4.0 g/10 minutes was used.

[Block propylene copolymer]

In addition, as an olefin polymer, the content of ethylene is 1
A propylene-ethylene block copolymer (hereinafter referred to as rpp(2)J) having a weight coefficient of 2.0, an MFI of 2.01710 minutes, and a density of 0.900 g/cm' was used.

[Low density ethylene homopolymer]

Furthermore, as an olefin polymer, the density force i0,917
jl/cTL5, and M, 1. 5. ig/1
Low-density ethylene homopolymer (hereinafter referred to as "LDPE")
”) was used.

[Hydroxyl compound]

As hydroxyl compounds, 2-hydroxy diethyl acrylate [hereinafter referred to as "compound (A)"], 2-hydroxyprogyl methacrylate [hereinafter referred to as "compound (B)"]
J] and 3,6-dimethyl-4-octyne-
3,6-nool [hereinafter referred to as "compound (C)"] was used.

[Organic peroxide]

As an organic peroxide, penzoylno f-ocyanide [
[hereinafter referred to as "BPO"] and Nocumilno and Mono-Oxide [hereinafter referred to as rDCPJ] were used.

[Inorganic filler]

As inorganic fillers, calcium carbonate (hereinafter referred to as rcacO3J) with an average particle size of 10 microns, talc (density 27cm) with an average particle size of 20 microns, and sulfuric acid with an average particle size of 2.2 microns are used. Antimony trioxide (hereinafter referred to as "5b2o5") with an average particle size of 0.01 microns, aluminum powder (hereinafter referred to as "5b2o5") with an average particle size of 70 microns.
Iron sand (hereinafter referred to as "At powder"), iron sand having an average particle size of about 100 microns, and gypsum having an average particle size of 48 microns were used.

Examples 1 to 17, Comparative Examples 1 to 5 The olefin polymer, hydroxyl compound, organic peroxide, and inorganic filler whose blending amounts are shown in Table 1 were mixed in advance using a sous-cool mixer for 10 minutes. Mixing (tri-blend) was performed for minutes. Each of the obtained mixtures was melt-kneaded using a vented extruder (diameter 75) to produce pellets (compositions) (Examples 1 to 6).

In addition, olefin polymers whose blending amounts are shown in Table 1,
A hydroxyl compound and an organic peroxide were triblended and melt mixed under the same conditions as above to produce pellets. Each of the obtained pellets and the inorganic filler whose composition ratio in the composition is shown in Table 1 were triblended and melt mixed in the same manner as above to produce a composition (-2 ret). Examples 7 to 17, Comparative Example 1
~5).

Each pellet (composition) thus obtained
was injection molded using a 5 oz injection molding machine at a temperature of 230°C to obtain flat specimens (120
2 mm thick).

A two-component urethane paint (manufactured by Nippon B Chemical Co., Ltd., trade name R-257) was applied to one side of each specimen thus obtained using a through gun to a thickness of 35 to 40 microns for a paint film peeling test. It's sprayed using. Then, heat drying was performed at a temperature of 90° C. for 30 minutes. After leaving the sample at room temperature for one day and night, a peel strength test of the coating film of each sample was conducted. The results are shown in Table 2.

After cutting the above-mentioned flat specimen into a short piece of 10 cm x 2 cm, a two-component cold-curing solvent-based polyurethane adhesive (manufactured by Konishi Co., Ltd., trade name, Pond KU-1) was applied.
0) was used to bond the sample of the resin part used in each Example or Comparative Example, which had also been cut into short strips of the same size, and was left at room temperature for 24 hours, after which the adhesive strength was measured. The results are shown in Table 2.

Two test specimens obtained as described above were fixed in parallel with a 1-degree interval between them, and between them, l? IJ urethane A
-m was produced by injection foaming method.

Equipment for injection foaming and yj? The stock solution for IJ urethane foam was Insalpa, a trade name of Insalpa (USA), Ri≠20 (foaming ratio: 40 times). After being left for 24 hours after injection, the adhesion strength of each specimen to the polyurethane foam was measured. The results are shown in Table 2. In this test, if the adhesion strength was too strong and no fracture occurred at the interface between the molded part, the polyurethane foam, and the 4-me part, and the 7JMJ urethane foam suffered cohesive failure,
"1 Cohesive failure" is written in the column of adhesion strength in Table 2.

Comparative Example 6 PP(x) was injection molded in the same manner as above to produce a flat specimen. Spray a thermosetting polypropylene primer (manufactured by Nippon P Chemical Co., Ltd., trade name RB-291, ■Primer) uniformly on one side of this specimen using a spray gun to a film thickness of 13 to 15 microns. After application, it was heated and dried for 30 minutes at a temperature of 90°C.Then, a two-component urethane paint was applied to the primer-coated surface in the same manner as above, and it was heated and dried at a temperature of 90°C for 30 minutes. The peel strength of this coating is 1609/
It was Confucian. Also, on this primer coated surface, apply a two-component room temperature curing type 7+? similar to the above. An IJ urethane adhesive (Pond KU-10) was used, and the adhesive strength was measured after the sample was left at room temperature for 24 hours. The adhesive strength was 2.5 kg/cIIL.Furthermore, polyurethane foam was manufactured on the primer-coated surface by the injection foaming method in the same manner as described above.When the adhesive strength of this specimen was measured, it was 1.8 kg. It was mu.

Claims (1)

[Scope of Claims] (A) an olefin polymer; (B) having at least one unsaturated bond in the molecule;
and an organic compound having a hydroxyl group, (C) an organic peroxide, and (D) an olefinic polymer consisting of an inorganic filler having a density of 20 μm or more. , is a composition obtained by processing at a temperature of 300°C or less, and the composition ratio of the inorganic filler in the composition is 20 to 90% by weight, and 10% by weight.
The mixing ratio with respect to 0 parts by weight of the olefin polymer is 0.1 to 50 parts by weight of the organic compound having a hydroxyl group, and 0.01 to 20.0 parts by weight of the organic peroxide. An olefinic polymer composition in which glass fiber, graphite, carbon fiber, and mica are not used alone as inorganic fillers.