JP2021004347A - Composition - Google Patents

Abstract

To provide a composition having high fire retardancy and excellent heat resistance.SOLUTION: A composition comprising an olefinic polymer (component (A)) and a fire retardant agent (component (B)), in which chemiluminescent average emission intensity of the component (A) is 5000 counts or larger.SELECTED DRAWING: None

Description

The present invention relates to compositions.

Patent Document 1 describes a flame-retardant ethylene-based resin composition containing an ethylene-α-olefin copolymer having specific flow characteristics and a flame retardant.

Further, Patent Document 2 describes a flame-retardant resin composition containing a cyclic olefin-based copolymer having a glass transition temperature in a specific range and a flame retardant.

Japanese Unexamined Patent Publication No. 2007-23229 Japanese Unexamined Patent Publication No. 5-112678

There is a demand for a resin composition having higher flame retardancy and higher heat resistance than the resin compositions disclosed in Patent Documents 1 and 2.

One aspect of the present invention is to provide a composition having high flame retardancy and excellent heat resistance.

As a result of diligent studies on the above problems, the present inventors have found that the average luminescence intensity of the olefin polymer is related to the flame retardancy and heat resistance of the polymer itself.

More specifically, they have found that a composition containing an olefin polymer having a chemylluminescence average emission intensity in a specific range and a flame retardant exhibits flame retardancy, and have completed the present invention. That is, the present invention includes the following inventions.
A composition containing an olefin polymer (component (A)) and a flame retardant (component (B)), wherein the chemylluminescence average emission intensity of the component (A) is 5000 counts or more.
An olefin polymer (component (A)) containing a monomer unit (M1) derived from ethylene and a monomer unit (M2) derived from a monocyclic cyclic olefin, and a flame retardant (component (B)). The content of the monomer unit (M1) contained in the component (A) is 92 mol% to 98 mol%, and the content of the monomer unit (M2) is 2. A composition which is from 0.0 mol% to 8.0 mol%.

According to one aspect of the present invention, it is possible to provide a composition having high flame retardancy and excellent heat resistance.

An embodiment of the present invention will be described below, but the present invention is not limited thereto. The present invention is not limited to the configurations described below, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments and examples can be used. Embodiments and examples obtained in appropriate combinations are also included in the technical scope of the present invention. Further, unless otherwise specified in the present specification, "A to B" representing a numerical range is intended to be "A or more and B or less".

〔Composition〕
The composition according to one aspect of the present invention is characterized by containing the following component (A) and component (B).
Component (A): Chemylluminescence An olefin polymer component (B) having an average emission intensity of 5000 count or more: a flame retardant.

The composition according to one aspect of the present invention can exhibit high flame retardancy and excellent heat resistance by containing an olefin polymer having a chemylluminescence average emission intensity of 5000 count or more as the component (A). .. Therefore, the composition according to one aspect of the present invention can be suitably used for various applications in which heat resistance and flame retardancy are required, such as insulators and sheaths of electric wires and cables, wallpaper, and floor materials.

[Component (A)]
The component (A) constituting the composition according to one aspect of the present invention has a chemylluminescence average emission intensity of 5000 counts or more, more preferably 10000 counts or more.

When the average emission intensity of chemylluminescence is 5000 counts or more, the flame retardancy of the composition can be enhanced and the heat resistance can be improved.

The average emission intensity of chemylluminescence is not limited, but is preferably 100,000 counts or less, and more preferably 30,000 counts or less.

The average luminescence intensity of chemylluminescence is measured by detecting weak light generated when the molecules of the reaction system change from the excited state to the ground state in a chemical reaction, and the specific measurement method is described in Examples. Will be explained in detail.

[Olefin polymer]
The component (A) is an olefin polymer, which is a copolymer containing a monomer unit derived from an olefin and another monomer unit.

In one embodiment of the present invention, the monomer unit constituting the olefin polymer as the component (A) includes a monomer unit derived from ethylene (M1) and a monomer derived from a monocyclic cyclic olefin. The unit (M2) and other monomeric units (M3) can be mentioned.

The olefin polymer contains a monomer unit (M2) derived from a monocyclic cyclic olefin, and further comprises a group consisting of a monomer unit (M1) derived from ethylene and another monomer unit (M3). It preferably contains at least one monomeric unit of choice. The olefin polymer is an ethylene-monocyclic cyclic olefin copolymer containing a monomer unit (M1) derived from ethylene and a monomer unit (M2) derived from a monocyclic cyclic olefin. Is.

Further, as long as the average emission intensity of chemylluminescence of the component (A) is 5000 counts or more, even if it is one kind of olefin polymer obtained in one manufacturing step, two or more kinds of olefins produced in different manufacturing steps. It may be a mixture containing a polymer.

(Monomer unit derived from ethylene (M1))
The content of the ethylene-derived monomer unit (M1) contained in the olefin polymer is 80 mol% to 99.9 mol%, preferably 92 mol% to 98 mol%, and more preferably 93. It is from mol% to 97 mol%.

(Monomer unit derived from monocyclic cyclic olefin (M2))
Examples of the monocyclic cyclic olefin include cyclobutene, cyclopentene, 1-methyl-1-cyclopentene, 3-methyl-1-cyclopentene, 4-methyl-1-cyclopentene, cyclohexene, 1-methyl-1-cyclohexene, 3-. Examples thereof include methyl-1-cyclohexene, 4-methyl-1-cyclohexene, cyclohexene and cyclooctene, preferably cyclopentene, cyclohexene or cyclooctene, and more preferably cyclopentene. The olefin polymer contains a monomer unit (M2) derived from a monocyclic cyclic olefin rather than a monomer unit derived from a polycyclic cyclic olefin such as norbornene. As a result, the average emission intensity of chemylluminescence can be suitably increased while imparting high heat resistance to olefin polymerization.

The monomer unit (M2) may be contained alone or in combination of two or more, but is preferably contained alone.

The content of the monomer unit (M2) contained in the olefin polymer is 0.1 mol% to 20 mol%, preferably 2.0 mol% to 8.0 mol%, and more preferably 3 The flame retardancy of the composition increases as the content of the monomer unit (M2) increases in the range of 0.0 mol% to 7.0 mol% and 0.1 mol% to 20 mol%. It can be increased, and the average emission intensity of chemilinessence can be increased to 5000 counts or more. Further, by setting the content of the monomer unit (M2) to 20 mol% or less, the heat resistance of the composition can be enhanced.

(Other monomer unit (M3))
The olefin polymer may contain a monomer unit (M1) and a monomer unit (M3) different from the monomer unit (M2). Examples of the monomer unit (M3) include a monomer unit derived from an α-olefin having 3 to 20 carbon atoms.

Examples of the α-olefin having 3 to 20 carbon atoms include propylene, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-hexene, 1-octene and 1-decene.

The monomer unit (M3) may be contained alone or in combination of two or more.

The content of the monomer unit (M3) contained in the olefin polymer is usually 0.1 mol% to 5.0 mol%, preferably 0.5 mol% to 3.0 mol%. More preferably, it is 1.0 mol% to 2.0 mol%. When the content of the monomer unit (M3) contained in the olefin polymer is 3.0 mol% or less, the mechanical strength of the olefin polymer can be increased.

As the component (A) contained in the composition according to one embodiment, the olefin polymer is an ethylene-monocyclic cyclic olefin composed of only a monomer unit (M1) and the monomer unit (M2). It is preferably a polymer. When the olefin polymer is composed of only the monomer unit (M1) and the monomer unit (M2), the balance between the heat resistance and the flame retardancy of the composition can be improved.

The content of the monomer unit (M1), the monomer unit (M2) and the monomer unit (M3) contained in the olefin polymer can be measured by the NMR method for the olefin polymer.

[Melt flow rate of component (A)]
The lower limit of the melt flow rate of the component (A) (hereinafter, may be referred to as “MFR”) is preferably 0.01 g / 10 from the viewpoint that the extrusion load when processing the resin can be further reduced. Minutes, more preferably 0.1 g / 10 minutes. The upper limit of MFR is preferably 1000 g / 10 minutes, more preferably 100 g / 10 minutes, and even more preferably 50 g / 10 minutes from the viewpoint of further increasing the mechanical strength of the resin. MFR is a value measured by the method A under the conditions of a temperature of 190 ° C. and a load of 21.18 N in the method specified in JIS K7210-11995. Further, the MFR of the component (A) can be adjusted by, for example, the hydrogen concentration and the polymerization temperature at the time of polymerization of the component (A), and when the hydrogen concentration and the polymerization temperature are increased, the MFR of the component (A) becomes higher. growing.

The polystyrene-equivalent weight average molecular weight of the component (A) is usually 1000 to 500000. The polystyrene-equivalent weight average molecular weight can be measured by gel permeation chromatography.

[Manufacturing method of component (A)]
The component (A) can be produced by polymerizing a monomer as a material at a temperature of 0 ° C. or higher in the presence of a polymerization catalyst.

In one embodiment, the component (A) is produced by polymerizing ethylene, a monocyclic cyclic olefin, and if necessary, an α-olefin having 3 to 20 carbon atoms at a temperature of 0 ° C. or higher. be able to.

Examples of the monocyclic cyclic olefin and the α-olefin having 3 to 20 carbon atoms include those described above.

Examples of the polymerization catalyst include a catalyst obtained by contacting the transition metal complex (a) with the co-catalyst component (b) and / or organoaluminum (c).

Examples of the transition metal complex (a) include isopropylidene (cyclopentadienyl) (3-tert-butyl-5-methyl-2-phenoxy) titanium dichloride and dimethylsilylene (tetramethylcyclopentadienyl), which are half-titanosen complexes. ) (3-tert-Butyl-5-methyl-2-phenoxy) titanium dichloride, diethylsilylene (tetramethylcyclopentadienyl) (3-tert-butyl-5-methyl-2-phenoxy) titanium dichloride, dimethylsilylene (3-tert-butyl-5-methyl-2-phenoxy) Fluolefunyl) (3-tert-butyl-5-methyl-2-phenoxy) Titanium dichloride and other complexes described in JP-A-9-87313 and rac-dimethylsilylene-bis (2-methyl-4-phenyl) which is a crosslinked zirconosen complex. Indenyl) zirconium dichloride, rac-dimethylsilylene-bis (2-methyl-5,6-benzoindenyl) zirconium dichloride, rac-ethylenebis indenyl zirconium dichloride, rac-dimethylsilylene-bis (2-methyl-4- Phenylindenyl) Titanium dichloride, rac-dimethylsilylene-bis (2-methyl-5,6-benzoindenyl) titanium dichloride, rac-ethylenebisindenyl titanium dichloride, rac-dimethylsilylene-bis (2-methyl-4) -Phenylindenyl) hafnium dichloride, rac-dimethylsilylene-bis (2-methyl-5,6-benzoindenyl) hafnium dichloride, rac-ethylenebisindenyl hafnium dichloride, etc., as described in JP-A-6-100579. Examples include complexes.

As the co-catalyst component (b), organic aluminum oxy compounds such as tetramethyldialuminoxane, tetraethyldiaminoxane, tetrabutyldialuminoxane, tetrahexyldialuminoxane, methylaluminoxane, ethylaluminoxane, butylaluminoxane, isobutylaluminoxane, and hexylaluminoxane; (Pentafluorophenyl) borane, triphenylcarbenium tetrakis (pentafluorophenyl) borate, tri (n-butyl) ammonium tetrakis (pentafluorophenyl) borate, N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate, etc. Examples include boron compounds.

Examples of the organic aluminum component (c) include trialkylaluminum such as trimethylaluminum, triethylaluminum, tripropylaluminum, triisobutylaluminum, and trihexylaluminum; dimethylaluminum chloride, diethylaluminum chloride, dipropylaluminum chloride, and diisobutylaluminum hachloride. Dialkylaluminum chlorides such as dihexylaluminum chloride; alkylaluminum dichlorides such as methylaluminum dichloride, ethylaluminum dichloride, propylaluminum dichloride, isobutylaluminum dichloride, hexylaluminum dichloride; dimethylaluminum hydride, diethylaluminum hydride, dipropylaluminum hydride, diisobutylaluminum hydride , Dialkylaluminum hydride such as dihexyl aluminum hydride and the like.

The polymerization can be carried out by any of a liquid phase polymerization method such as dissolution polymerization and suspension polymerization or a gas phase polymerization method. Specific examples of the inert hydrocarbon medium used in the liquid phase polymerization method include aliphatic hydrocarbons such as propane, butane, pentane, hexane, heptane, octane, decane, dodecane, and kerosene; cyclopentane, cyclohexane, and the like. Alicyclic hydrocarbons such as methylcyclopentane and methylcyclohexane; aromatic hydrocarbons such as benzene, toluene and xylene; halogenated hydrocarbons such as ethylene chloride, chlorobenzene and dichloromethane or mixtures thereof. Benzene itself can also be used as a solvent.

The amount of olefin to be subjected to polymerization is not particularly limited, and is appropriately selected depending on the type of olefin to be used, the copolymerization ratio of the copolymer to be obtained, and the like.

The polymerization temperature using such a polymerization catalyst is preferably 0 ° C. or higher, more preferably 0 to 350 ° C., and even more preferably 50 to 220 ° C.

The polymerization pressure is usually 0.1 MPa to 350 MPa, preferably 1 MPa to 350 MPa, and particularly preferably 1 MPa to 100 MPa. The polymerization form can be either a batch type or a continuous type, but it is preferable to use a continuous type. As the reactor, a stirring tank type reactor or a tube type reactor can be usually used. The polymerization is also carried out in a single reaction region, but one reactor may be divided into a plurality of reaction bands, or a plurality of reactors may be connected in series or in parallel. When using a plurality of reactors, any combination of tank type-tank type or tank type-tube type may be used.

The molecular weight and molecular weight distribution of the component (A) can be adjusted by changing the polymerization temperature, using a chain transfer agent such as hydrogen, changing the amount of the organic aluminum (c) used, and the like. The amount of organoaluminum (c) used is 0.1 to 10,000,000, preferably 10 to 1000000, as the ratio of the number of moles of the transition metal of the transition metal compound to the number of moles of the organoaluminum compound (organoaluminium compound / transition metal). Is. The molecular weight can be reduced by increasing the ratio of (organoaluminium (c) / transition metal complex (a)).

[Component (B)]
The component (B) constituting the composition according to one aspect of the present invention is a flame retardant.

Examples of the flame retardant of the component (B) include metal hydroxides, metal oxides, inorganic salts / inorganic hydrated compounds, silane compounds, phosphorus compounds, bromine compounds, chlorine compounds and the like.

Examples of the metal hydroxide include magnesium hydroxide, aluminum hydroxide, calcium hydroxide, zirconium hydride, hydrotalcite and the like.

Examples of the metal oxide include antimony pentoxide, antimony trioxide, zinc oxide, ferrocene, copper oxide, calcium oxide, nickel oxide, bismuth oxide, zinc tinate, calcium aluminate and the like.

Examples of the inorganic salt / inorganic hydrated compound include calcium carbonate, barium borate, kaolin clay, pyrophyllite clay, dosonite, calcium aluminate silicate and the like.

Examples of the silane compound include silicone oil, silicone gum, and those having a functional group introduced therein.

Examples of the phosphorus compound include non-halogen phosphates such as triphenyl phosphate, tricresyl phosphate, and trixylenyl phosphate; halogen-containing phosphorus such as trichloroethyl phosphate, trisdichloropropyl phosphate, and tris β-chloropropyl phosphate. Acid ester; polyphosphate ammon; polyphosphate amide; polychlorophosphate; condensed phosphonic acid ester; aromatic condensed phosphoric acid ester; red phosphorus and the like.

Examples of the bromine compound include decabromodiphenyl oxide, hexabromohycrododecane, ethylenebistetrabromophthalimide, hexapromobenzene and the like.

Examples of the chlorinated compound include perchlorohycropentadecane, chlorinated paraffin, chlorinated polyolefin, chlorinated polyethylene and the like.

As the component (B), the above compound may be used alone, or a plurality of the above compounds may be used in combination.

As the component (B), a non-halogen-based and non-phosphorus-based flame retardant is preferable, a metal hydroxide, a metal oxide, an inorganic salt / inorganic hydrate compound is more preferable, a metal hydroxide is further preferable, and hydroxide is used. Aluminum and magnesium hydroxide are particularly preferable.

In the composition according to one aspect of the present invention, the content of the component (B) is preferably 5 to 250 parts by weight, more preferably 80 parts by weight, based on 100 parts by weight of the content of the component (A). ~ 160 parts by weight. When the content of the component (B) is in the above range, good flame retardancy can be obtained, and good mechanical strength can be obtained when the composition is applied to the molded product.

[Other ingredients]
In addition to the component (A) and the component (B), the composition according to one aspect of the present invention contains, if necessary, an antioxidant, an anti-blocking agent, a lubricant, an antistatic agent, a weather-resistant stabilizer, a pigment, and processability. Additives such as improvers; polymer components other than the component (A) may be added, and two or more of these additives and polymer components may be used in combination.

Examples of the polymer component other than the component (A) (hereinafter referred to as the component (C)) include high-pressure low-density polyethylene and an ethylene-α-olefin copolymer. These may be used alone or in combination of two or more. The component (C) may have an average luminescence intensity of less than 5000 counts as long as the content does not impair the effects of the present invention. That is, the component (C) can be an olefin polymer that does not contain a monomer unit derived from a monocyclic cyclic olefin.

More specifically, the component (C) is preferably at least one ethylene polymer selected from the ethylene polymer group consisting of high-pressure low-density polyethylene and ethylene-α-olefin copolymers.

The ethylene-α-olefin copolymer used in the component (C) is an ethylene-α-olefin copolymer obtained by copolymerizing ethylene with an α-olefin having 3 to 20 carbon atoms. Examples of α-olefins having 3 to 20 carbon atoms include propylene, 1-butene, 1-pentene, 1-hexene, 1-hexene, 1-octene, 1-nonene, 1-decene, 1-dodecene, 4 Examples thereof include -methyl-1-pentene and 4-methyl-1-hexene, preferably 1-butene, 1-hexene and 1-octene. Further, the above-mentioned α-olefin having 3 to 20 carbon atoms may be used alone or in combination of two or more.

The ethylene-α-olefin copolymer used in the component (C) is, for example, an ethylene-propylene copolymer, an ethylene-1-butene copolymer, an ethylene-1-hexene copolymer, or an ethylene-1-octene. Examples thereof include ethylene-1-butene copolymers, ethylene-1-hexene copolymers, ethylene-1-butene-1-hexene copolymers, and ethylene-1-butene-1-octenes. It is a polymer.

As a method for producing the ethylene-α-olefin copolymer used in the component (C), a liquid phase polymerization method or a slurry is used using a known polymerization catalyst such as a Ziegler-Natta catalyst, a chromium catalyst, or a metallocene catalyst. Examples thereof include a method of producing by a known polymerization method such as a polymerization method, a vapor phase polymerization method and a high pressure ion polymerization method. Further, the polymerization method may be either a batch polymerization method or a continuous polymerization method, or may be a multi-stage polymerization method having two or more steps.

In the composition according to one aspect of the present invention, the content of the component (C) is preferably 100% by weight from the viewpoint of further enhancing the appearance of the extruded molded product, with the total of the component (A) and the component (C) being 100% by weight. The content of the component (C) is 70% by weight or less (the content of the component (A) is 30% by weight or more), and more preferably, the content of the component (C) is 60% by weight or less (the component (component (A)). The content of A) is 40% by weight or more). Further, from the viewpoint of further increasing the mechanical strength of the extruded product, the content of the component (C) is preferably 5% by weight or more (the content of the component (A) is 95% by weight or less), and more preferably. , The content of the component (C) is 10% by weight or more (the content of the component (A) is 90% by weight or less), and more preferably, the content of the component (C) is 15% by weight or more (the content of the component (A)). ) Is 85% by weight or less).

In the composition according to one aspect of the present invention, for example, the component (A), the component (B), and, if necessary, another component (component (C), etc.) are melt-kneaded by a known method. , Tumbler blender, Henschel mixer, etc., and then melt-kneaded with a single-screw extruder, multi-screw extruder, etc., or melt-kneaded with a kneader, Banbury mixer, etc. The component (B) and other components (component (C), etc.) may be dry-blended as one or more master batches. Further, the polymer components such as the component (A) and the component (C) may be modified with an organic silane compound, an acid anhydride, an organic peroxide or the like before or during the melt kneading.

[Use of composition]
The composition according to one aspect of the present invention can exhibit high flame retardancy by containing the component (A) and the component (B). More specifically, the composition according to one aspect of the present invention preferably exhibits an oxygen index of 25% or more, more preferably 26% or more, and more preferably 26% or more, as an index of flame retardancy. Can show an oxygen index of 27% or higher.
Therefore, the composition according to one aspect of the present invention is used for various uses requiring high heat resistance, for example, insulators and sheaths for wallpaper, curtains, flooring materials, packing materials, hoses, tubes, pipes, electric wires, cables, and the like. , Electronic equipment, electrical equipment, home appliances, sporting goods, office equipment, vehicle equipment, transportation equipment, logistics materials such as containers and cases, shoes, clothing, etc. In particular, it is suitably used for insulators and sheaths of electric wires and cables.

As a method for molding various molded bodies of the composition according to one aspect of the present invention, known molding methods such as extrusion molding method, injection molding method, powder molding method such as slush molding and rotary molding, and compression molding method. Etc. are used. In particular, the extrusion molding method is preferably used, for example, a coating extrusion molding method for coating electric wires and pipes, a tube extrusion molding method, a pipe extrusion molding method, an extrusion hose molding method, an inflation molding method, a T die casting method, and a hollow. Extrusion molding method and the like can be mentioned.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

Various physical properties were measured according to the following method.
(1) Chemylluminescence average emission intensity The ethylene polymer is pressed with a hot press at 150 ° C. at a pressure of 2 MPa for 5 minutes, then cooled with a cooling press at 30 ° C. for 5 minutes, and is a 3 cm square sheet with a thickness of 2 mm. Was produced.

The prepared sheet was set in the sample chamber of a chemiluminescence measuring device (CLA-FS4, Tohoku Denshi Sangyo Co., Ltd.) having a photomultiplier tube that had been heated to 160 ° C. as a detection element, and had an oxygen concentration of 20%. The measurement of chemiluminescence intensity at 300 nm to 850 nm was started while sending air to the sample chamber at 50 ml / min. The average value of the chemylluminescence emission intensity from 25 minutes to 30 minutes after the start of the measurement of the chemylluminescence emission intensity was defined as the chemylluminescence average emission intensity (count).

(2) Oxygen index (%)
The oxygen index was measured according to the method specified in JIS K7201-1976.

(3) Vicat softening point (° C)
The Vicat softening point was measured according to the method specified in JIS K7206-1979.

(4) TG 60% (° C)
The ethylene polymer was pressed with a hot press at 150 ° C. at a pressure of 2 MPa for 5 minutes and then cooled with a cooling press at 30 ° C. for 5 minutes to prepare a 3 cm square sheet having a thickness of 2 mm. A sample of about 10 mg was cut out from the sheet.
The cut-out sample is heated at a heating rate of 30 ° C. to 10 ° C./min using a thermogravimetric-differential thermal measuring device (TG / DTA6300 manufactured by Hitachi High-Tech Science Corporation), and the weight change of the sheet is measured. did. The temperature at the time when the weight became 60% from the initial weight of the measurement was defined as TG 60% (° C.).

[Example 1]
100 mL of cyclopentene and 2361 mL of heptane were introduced into an autoclave with a stirring blade having an internal volume of 5.0 L sufficiently substituted with argon, and the temperature was raised to 60 ° C. Ethylene gas was introduced so that the ethylene partial pressure was 1.4 MPa, and after the inside of the system was stabilized, hydrogen gas was introduced so that the hydrogen partial pressure was 30 kPa. Next, a hexane solution of dimethylsilylene (tetramethylcyclopentadienyl) (3-tert-butyl-5-methyl-2-phenoxy) titanium dichloride adjusted to 1 mL (1 mmol) of triisobutylaluminum hexane solution and 1 μmol / ml. Polymerization was started by adding 3 mL (3 μmol) and 15 mL (15 μmol) of a toluene slurry of N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate, and the polymerization was carried out at 60 ° C. for 180 minutes. After 180 minutes from the start of the polymerization, ethanol was introduced to stop the polymerization. The obtained polymer slurry was put into acetone and precipitated to obtain an ethylene-cyclopentene copolymer (E-CPE).

The monomer unit derived from cyclopentene contained in the obtained E-CPE was 5.2 mol%. When the average luminescence intensity of E-CPE was measured, the average luminescence intensity of chemylluminescence was 14061 count.

A laboratory of 100 parts by weight of E-CPE (component (A)) obtained above and 100 parts by weight of magnesium hydroxide (component (B)) (Kisuma (registered commercial law) 5B, manufactured by Kyowa Chemical Industry Co., Ltd.) The mixture was kneaded with a plast mill at 150 ° C. for 5 minutes to obtain a composition. The obtained composition was pressed by a hot press at 190 ° C. and a pressure of 2 MPa for 5 minutes, and then cooled by a cooling press at 30 ° C. for 5 minutes to obtain a 7.5 cm × 1 cm thick sheet and a thickness of 4 mm. A 1.5 cm square sheet with a thickness of 5 mm was produced. When the oxygen index of the prepared 4 mm thick sheet and the Vicat softening point and TG 60% of the prepared 5 mm thick sheet were measured, the oxygen index was 27.2%, the Vicat softening point was 87 ° C, and the TG was 60%: 497 ° C. It was.

[Example 2]
A composition was obtained in the same manner as in Example 1 except that the blending amount of magnesium hydroxide (component (B)) was changed from 100 parts by weight to 150 parts by weight. From the obtained composition, a sheet was prepared in the same manner as in Example 1, and the oxygen index, Vicat softening point and TG60% were measured. As a result, the oxygen index: 31.5%, Vicat softening point: 86 ° C., TG60. %: It was 484 ° C.

[Comparative Example 1]
Instead of E-CPE (component (A)), ethylene-1-hexene copolymer (E-HEX: Excelene® GMH GH030, melt flow rate 0.5 g / 10 min, density 912 kg / cm ³ , A composition was obtained in the same manner as in Example 1 except that (manufactured by Sumitomo Chemical Co., Ltd.) was used.
When the average luminescence intensity of the above E-HEX was measured, the average luminescence intensity of chemylluminescence was 1623 count.

From the composition obtained above, a sheet was prepared in the same manner as in Example 1, and the oxygen index, the Vicat softening point and the TG of 60% were measured. As a result, the oxygen index: 26.3% and the Vicat softening point: 86 ° C. , TG 60%: 472 ° C.

[Comparative Example 2]
A composition was obtained in the same manner as in Comparative Example 1 except that the blending amount of magnesium hydroxide (component (B)) was changed from 100 parts by weight to 150 parts by weight. From the obtained composition, a sheet was prepared in the same manner as in Example 1, and the oxygen index, the Vicat softening point and the TG of 60% were measured. As a result, the oxygen index: 29.7%, the Vicat softening point: 85 ° C., TG60. %: It was 486 ° C.

[Comparative Example 3]
Instead of E-CPE (component (A)), ethylene-norbornene copolymer (E-NOR: TOPAS E-140, TOPAS Advanced Polymers GmbH, manufactured by Norbornene-derived monomer unit: 7.8 mol% ) Was used, and a composition was obtained in the same manner as in Example 1.

When the average luminescence intensity of the E-NOR was measured, the average luminescence intensity of chemylluminescence was 3348 count.

A sheet was prepared from the composition obtained above in the same manner as in Example 1, and the oxygen index, the Vicat softening point and the TG of 60% were measured. As a result, the oxygen index: 26.0% and the Vicat softening point: 67 ° C. , TG 60%: 480 ° C.

The type of ethylene polymer used in Examples 1 and 2 and Comparative Examples 1 to 3, the blending amount of the component (B), the chemilinescence average emission intensity of the ethylene polymer, the oxygen index of the composition, and the Vicat softening point. And TG 60% are summarized in Table 1 below.

As shown in Table 1, the composition of Example 1 containing the E-CPE of the component (A) showing a high average luminescence intensity of chemylminescence contains E-HEX or E-NOR having a low average luminescence intensity of chemylminescence. Compared with the compositions of Comparative Examples 1 and 3, although the amount of the flame retardant of the component (B) was equal, it showed a high oxygen index and was excellent in heat resistance. Similarly, the composition of Example 2 containing the E-CPE of the component (A) has an equal amount of flame retardant of the component (B) as compared with the composition of Comparative Example 2 containing E-HEX. Nevertheless, it showed a high oxygen index and was excellent in heat resistance.

The composition according to one aspect of the present invention has excellent heat resistance, and is particularly preferably used for an insulator or a sheath of an electric wire or a cable.

Claims (10)

It contains an olefin polymer (component (A)) and a flame retardant (component (B)).
A composition in which the average luminescence intensity of the component (A) is 5000 counts or more. The composition according to claim 1, wherein the component (A) contains a monomer unit (M1) derived from ethylene and a monomer unit (M2) derived from a monocyclic cyclic olefin. The composition according to claim 2, wherein the monomer unit (M2) is a monomer unit derived from cyclopentene. The composition according to any one of claims 1 to 3, wherein the chemylluminescence average emission intensity of the component (A) is 5000 to 100,000 counts. The composition according to any one of claims 1 to 4, wherein the chemiluminescence average emission intensity of the component (A) is 1000 to 30000 counts. An olefin polymer (component (A)) containing a monomer unit (M1) derived from ethylene and a monomer unit (M2) derived from a monocyclic cyclic olefin,
Contains a flame retardant (component (B))
The content of the monomer unit (M1) contained in the component (A) is 92 mol% to 98 mol%, and the content of the monomer unit (M2) is 2.0 mol% to 2.0 mol%. The composition, which is 8.0 mol%. The composition according to claim 6, wherein the monomer unit (M2) is a monomer unit derived from cyclopentene. The composition according to any one of claims 1 to 7, wherein the content of the component (B) is 5 to 250 parts by weight with respect to 100 parts by weight of the content of the component (A). The composition according to any one of claims 1 to 8, wherein the content of the component (B) is 80 to 160 parts by weight with respect to 100 parts by weight of the content of the component (A). The invention according to any one of claims 1 to 9, wherein the component (B) is a metal hydroxide, a metal oxide, an inorganic salt / inorganic hydrate compound, a silane compound, a phosphorus compound, a bromine compound or a chlorine compound. Composition.