JP3039799B2 - Cyclic olefin resin - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to heat resistance, impact resistance, rigidity, strength, moldability,
The present invention relates to a cyclic olefin resin having an excellent balance of scratch resistance.

Technical Background of the Invention Conventionally, ABS resins (acrylonitrile, butadiene, styrene resins) and the like have been widely used as raw material resins for molded articles in applications such as automobiles, home appliances, OA equipment, and miscellaneous goods. ABS resin is amorphous, and has excellent heat resistance, rigidity, dimensional accuracy, etc., but has poor light resistance, and has a problem that the resin deteriorates and its mechanical strength decreases over a long period of use. . On the other hand, crystalline polypropylene or the like is used as a resin having excellent light resistance, but there is a problem that heat resistance, rigidity, dimensional accuracy, and the like are inferior to ABS resin.

By the way, a cyclic olefin having an ethylenic double bond in the ring has polymerizability, and for example, a cyclic olefin / α-olefin random copolymer may be obtained by reacting with an α-olefin such as ethylene. It is known (see Japanese Patent Application No. 60-26024).

Such a cyclic olefin-based random copolymer has excellent heat resistance, rigidity, and scratch resistance. By taking advantage of this feature, it is suitable as a molding material for automobiles, home appliances, OA equipment, sundries, and the like. It was thought that it could be one of the resins. However, the impact resistance of the cyclic olefin-based random copolymer alone is insufficient, and in order to improve the impact resistance, a composition with a rubber-like elastic body has already been known (Japanese Patent Application Laid-Open No. 2-167318). However, there is a demand for a composition having a good balance of physical properties, such as excellent rigidity and scratch resistance, while substantially maintaining the impact resistance of such a composition.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a cyclic olefin-based resin having an excellent balance of heat resistance, impact resistance, rigidity, strength, moldability, and scratch resistance. It is an object.

SUMMARY OF THE INVENTION The cyclic olefin resin according to the present invention comprises: (a) at least one cyclic olefin polymer selected from the group consisting of the following groups (a) to (d): 100 parts by weight; an elastic modulus ^{0.1kg / cm 2 ~20000kg / cm 2} , glass transition point (Tg) of 0 ℃ or less, the rubber-like elastic material crystallinity of 30% or less; and 0.5 to 50 parts by weight, (c ) is the elastic modulus ^{1kg / cm 2 ~30000kg / cm 2} , glass transition point (Tg) of 0 ℃ or less, polyethylene or ethylene · alpha-olefin polymer crystallinity is 30% or more; 5
To 150 parts by weight and (d) a crosslinking agent; a reaction product obtained by reacting 0.01 to 1 part by weight with respect to a total of 100 parts by weight of the above components (a) to (c). .

(A) A copolymer of ethylene and a cyclic olefin represented by the following formula [I] or [1 '], having an intrinsic viscosity "η" of 0.05 to 10 dl / g measured in decalin at 135 ° C. An ethylene / cyclic olefin copolymer having a softening temperature (TMA) of 70 ° C. or higher; (b) a cyclic olefin ring-opening polymer represented by the following formula [I] or [I ′]: A cyclic olefin ring-opened polymer having an intrinsic viscosity [η] measured in decalin at 135 ° C. in the range of 0.05 to 10 dl / g and a softening temperature (TMA) of 70 ° C. or higher; A ring-opening copolymer of two or more cyclic olefins represented by I] or [I '], having an intrinsic viscosity [η] in the range of 0.05 to 10 dl / g measured in decalin at 135 ° C. A cyclic olefin ring-opening copolymer having a softening temperature (TMA) of 70 ° C. or more; (d) the hydrogenated product of (b) or (c) above.

(In the formula, n is 0 or 1, m is 0 or a positive integer, and R ^{1 to} R ¹⁸ are each independently an atom selected from the group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group. R ^{15 to} R ¹⁸ may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond; R ¹⁵ and R ¹⁶ or R ¹⁷ and R ¹⁸ may form an alkylidene group.) (In the formula [I '], p is 0 or an integer of 1 or more;
And r are 0, 1 or 2, and R ^{1 to} R ¹⁵ are each independently a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group,
Represents an atom or group selected from the group consisting of an aromatic hydrocarbon group and an alkoxy group, wherein R ⁵ (or R ⁶ ) and R 5
⁹ (or R ⁷ ) may be bonded via an alkylene group having 1 to 3 carbon atoms, or may be directly bonded without any group. Specific description of the invention Hereinafter, the cyclic olefin-based resin according to the present invention will be specifically described.

The cyclic olefin resin of the present invention comprises a reaction product of a cyclic olefin polymer (a), a rubbery elastic body (b), an ethylene / α-olefin polymer (c), and a crosslinking agent (d). .

In the present invention, when a polymer is referred to, the polymer is used in a concept including both a homopolymer and a copolymer.

Hereinafter, the cyclic olefin-based polymer (a), the rubber-like elastic body (b), the ethylene / α-olefin-based polymer (c), and the crosslinking agent (d) will be sequentially described.

Cyclic olefin-based polymer (a) As the cyclic olefin-based polymer (a) used in the present invention, the following polymers (a) to (d) can be exemplified.

(A) an ethylene / cyclic olefin-based copolymer which is a copolymer of ethylene and a cyclic olefin represented by the following formula [I] or [I ']; (b) the following formula [I] or [I'] (C) a ring-opening copolymer of two or more types of cyclic olefins represented by the following formula [I] or [I ']; Or (c) the hydrogenated product.

These polymers or copolymers can be used alone or in combination of two or more.

And, as for the cyclic olefin polymer as described above, the intrinsic viscosity [η] measured in decalin at 135 ° C. is 0.0
A cyclic olefin polymer having a softening temperature (TMA) of 70 ° C. or higher, which is in the range of 5 to 10 dl / g, is used.

(In the formula, n is 0 or 1, m is 0 or a positive integer, and R ^{1 to} R ¹⁸ are each independently an atom selected from the group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group. R ^{15 to} R ¹⁸ may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond; R ¹⁵ and R ¹⁶ or R ¹⁷ and R ¹⁸ may form an alkylidene group.) (In the formula [I '], p is 0 or an integer of 1 or more;
And r are 0, 1 or 2, and R ^{1 to} R ¹⁵ are each independently a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group,
Represents an atom or group selected from the group consisting of an aromatic hydrocarbon group and an alkoxy group, wherein R ⁵ (or R ⁶ ) and R 5
⁹ (or R ⁷ ) may be bonded via an alkylene group having 1 to 3 carbon atoms, or may be directly bonded without any group. However, in the above formula [I], n is 0 or 1, and preferably 0. M is 0 or a positive integer, preferably 0 to 3. In addition, the above formula [I ']
In the above, p is 0 or an integer of 1 or more, preferably 0 to 3.

R ^{1 to} R ¹⁸ (formula [I]) or R ^{1 to} R ¹⁵ (formula [I ′]) each independently represent an atom or a atom selected from the group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group. Represents a group. Here, examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom. Further, as the hydrocarbon group, each independently, usually an alkyl group having 1 to 6 carbon atoms,
A cycloalkyl group having 3 to 6 carbon atoms can be mentioned, and specific examples of the alkyl group include a methyl group, an ethyl group, an isopropyl group, an isobutyl group and an amyl group. Specific examples include a cyclohexyl group, a cyclopropyl group, a cyclobutyl group, and a cyclopentyl group.

Alternatively, in the above formula [I ′], R ⁵ (or R ⁶ ) and R ⁹
(Or R ⁷ ) may be bonded via an alkylene group having 1 to 3 carbon atoms, or may be directly bonded without any group.

Further, in the above formula [I], R ^{15 to} R ¹⁸ may be bonded to each other (together) to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring has a double bond. It may be. Further, R ¹⁵ and R ¹⁶ or R ¹⁷ and R ¹⁸ may form an alkylidene group. Such an alkylidene group can usually be an alkylidene group having 2 to 4 carbon atoms, and specific examples thereof include an ethylidene group, a propylidene group, an isopropylidene group and an isopropylidene group.

The cyclic olefin represented by the formula [I] or [I '] can be easily produced by condensing cyclopentadiene and a corresponding olefin or cyclic olefin by a Diels-Alder reaction.

Specific examples of the cyclic olefin represented by the formula [I] or [I ′] include, for example, Bicyclo [2.2.1] hept-2-ene derivatives such as; Can be mentioned.

This cyclic olefin random copolymer which is a copolymer of cyclic olefins and ethylene as described above (a)
Is ethylene and the above-mentioned cyclic olefin as essential components, but other copolymerizable unsaturated monomers may be added as necessary within a range not to impair the object of the present invention in addition to the essential two components. A component may be contained. Specific examples of the unsaturated monomer which may be optionally copolymerized include, for example, propylene, 1-butene, and 4-methyl in an amount less than an equimolar amount to an ethylene component unit in the produced random copolymer. -1-pentene, 1-hexene, 1-octene, 1-
Examples thereof include α-olefins having 3 to 20 carbon atoms, such as decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, and 1-eicosene.

In the cyclic olefin-based random copolymer (a) as described above, the repeating unit (a) derived from ethylene
Is present in the range of 40 to 85 mol%, preferably 50 to 75 mol%, and the repeating unit (b) derived from the cyclic olefin has 15 to 60 mol%, preferably 25 to 50 mol%. The repeating unit (a) derived from ethylene and the repeating unit (b) occurring in the cyclic olefin are randomly and substantially linearly arranged. Incidentally, the ethylene composition and the cyclic olefin composition are ¹³ C-NMR
Was measured by The fact that the cyclic olefin-based random copolymer is substantially linear and does not have a gel-like crosslinked structure can be confirmed by completely dissolving the copolymer in decalin at 135 ° C.

Such a cyclic olefin random copolymer (a)
The intrinsic viscosity [η] measured in decalin at 135 ° C. is 0.0
It is in the range of 5-10 dl / g, preferably 0.08-5 dl / g.

The softening temperature (TMA) of the cyclic olefin random copolymer (a) measured by a thermal mechanical analyzer is 70 ° C. or higher, preferably 90 to 250 ° C., more preferably 100 to 200 ° C. The softening temperature (TM
A) was measured by a thermal deformation behavior of a sheet having a thickness of 1 mm using a Thermo mechanical Analyzer manufactured by DuPont. That is, place a quartz needle on the sheet, apply a load of 49 g,
The temperature rises at a rate of ° C / min.
And The glass transition temperature (Tg) of the cyclic olefin-based random copolymer is usually 50 to 230 ° C., preferably 70 to 230 ° C.
It is desirably in the range of -210 ° C.

The cyclic olefin-based random copolymer (a)
The crystallinity measured by the X-ray diffraction method is 0 to 10%,
Preferably it is in the range of 0-7%, particularly preferably 0-5%.

In the present invention, in addition to the above-mentioned cyclic olefin random copolymer (a) as the cyclic olefin polymer,
Use of a ring-opened polymer (b) or a ring-opened copolymer (c) of a cyclic olefin represented by the formula [I] or [I '] or a hydrogenated product (d) of these (b) and (c) Can also.

The intrinsic viscosities [η] of the cyclic olefin polymers (b) to (d) measured in decalin at 135 ° C. and the softening point (TM
A), the glass transition temperature (Tg) and the degree of crystallinity are the same as those of the cyclic olefin-based random copolymer (a).

The cyclic olefin polymer used in the present invention is disclosed in JP-A-60-168708, JP-A-61-120816, JP-A-61-115912, JP-A-61-115916,
JP-A 62-252406, JP-A 62-252407, JP-A 61
-271308, JP-A-61-272216, and the like, by appropriately selecting conditions according to the method proposed by the present applicant.

Such a cyclic olefin random copolymer (a)
Wherein the structural unit (b) derived from the cyclic olefin represented by the formula [I] or [I '] is represented by the following formula [I
It is considered to form a repeating unit having the structure represented by [I] or [II '].

(In the formula [II], m, n and R ^{1 to} R ¹⁸ are the same as defined in the formula [I].) (In the formula [II ′], p, q, r and R ^{1 to} R ¹⁵ are the same as defined in the formula [I ′].) In the present invention, as described above, the cyclic olefin-based random copolymer is used. In addition to the polymer (a), a cyclic olefin ring-opening polymer (b), a ring-opening copolymer (c), or a hydrogenated product thereof obtained by ring-opening the same or different cyclic olefin monomer. D) can also be used. Such a cyclic olefin ring-opened polymer (b), a ring-opened copolymer (c) and a hydrogenated product thereof (d) will be described by taking the cyclic olefin represented by the formula [I] as an example. It is believed that they react to form ring-opened (co) polymers and their hydrogenated products as described below.

Examples of such polymers include ring-opening copolymers of tetracyclododecene with norbornene and their derivatives,
And its hydrogenated products.

In the present invention, a part of the above-mentioned ring-opened polymer, ring-opened copolymer, hydrogenated product thereof and cyclic olefin random copolymer is modified with an unsaturated carboxylic acid such as maleic anhydride. It may be. Such a modified product can be produced by reacting the cyclic olefin resin as described above with an unsaturated carboxylic acid, an anhydride thereof, or a derivative such as an alkyl ester of an unsaturated carboxylic acid. In this case, the content of the structural unit derived from the modifying agent in the modified product of the cyclic olefin-based resin is usually 50 to 10 mol% or less. Such a modified cyclic olefin-based resin can be produced by blending a modifier with a cyclic olefin-based resin and graft-polymerizing the modified olefin-based resin so as to have a desired modification rate, or preparing a modified product having a high modification rate in advance. Then, it can also be produced by mixing this modified product with an unmodified cyclic olefin resin.

In the present invention, the above ring-opened polymer, ring-opened copolymer,
These hydrogenated products, cyclic olefin random copolymers and modified products thereof can be used alone or in combination.

Further, in the present invention, when the above-mentioned cyclic olefin-based random copolymer is produced, it is represented by the formula [I] or [I '] as long as the physical properties of the obtained polymer and the like are not impaired. A cyclic olefin other than the cyclic olefin can be polymerized. Examples of such a cyclic olefin include cyclobutene, cyclopentene, cyclohexene, 3,4-dimethylcyclohexene, 3-methylcyclohexene, 2- (2-methylbutyl) -1-cyclohexene, 2,3,3a, 7a-tetrahydro- 4,7-methano-1H-indene, 3a, 5,6,7a-tetrahydro-4,7-methano-1H-indene and the like can be mentioned. Such other cyclic olefins can be used alone or in combination, and are usually used in an amount of 0 to 50 mol%.

In the present invention, the cyclic olefin polymer having an intrinsic viscosity [η] measured in decalin at 135 ° C. as described above in the range of 0.05 to 10 dl / g and a softening temperature (TMA) of 70 ° C. or higher is used. In addition, if desired, the intrinsic viscosity [η] measured in decalin at 135 ° C. is in the range of 0.05 to 5 dl / g,
Another cyclic olefin polymer having a softening temperature (TMA) of less than 70 ° C. may be blended and used.

Rubber-like elastic body used in the rubber elastic material (b) (b) according to the invention, the elastic modulus was ^{0.1kg / cm 2 ~20000kg / cm 2} , preferably 10kg
/ cm ² was ～15000Kg / cm ^2, particularly preferably 10 kg / cm ² to 1
It is 0000 kg / cm ² . For the elastic modulus, the test piece shape was measured using ASTM T
Based on YPE _IV , it is a value measured with a thickness of 2 mm, a gap between chucks of 64 mm, and a tensile speed of 50 mm / min.

The glass transition temperature (T
g) is usually in the range of 0 ° C or lower, preferably -10 ° C or lower, more preferably -20 ° C or lower. Further, the intrinsic viscosity [η] of the rubber-like elastic body (b) measured in decalin at 135 ° C. is desirably 0.01 to 10 dl / g, preferably 0.08 to 7 dl / g. Further, the rubbery elastic body (b)
The crystallinity measured by the X-ray diffraction method is usually 30%
The rubber-like elastic body (b) is preferably low crystalline or amorphous.

Specific examples of the rubber-like elastic body (b) used in the present invention include an ethylene / α-olefin copolymer rubber and a propylene / α-olefin copolymer rubber. The above-mentioned ethylene / α-olefin copolymer rubber and propylene / α-olefin copolymer rubber can be used alone or in combination.

The α-olefin constituting the ethylene / α-olefin copolymer rubber is usually an α-olefin having 3 to 20 carbon atoms.
Olefins such as propylene, 1-butene, 1-
Pentene, 1-hexene, 4-methyl-1-pentene,
Mention may be made of 1-octene, 1-decene and mixtures thereof. Of these, α-olefins having 3 to 10 carbon atoms are particularly preferred.

The α-olefin constituting the propylene / α-olefin copolymer rubber is usually an α-olefin having 4 to 20 carbon atoms.
Olefins, such as 1-butene, 1-pentene, 1
-Hexene, 4-methyl-1-pentene, 1-octene, 1-decene and mixtures thereof. Of these, α-olefins having 4 to 10 carbon atoms are particularly preferred.

Incidentally, the α-olefin copolymer used in the present invention may be an α-olefin copolymer such as a component unit derived from a diene compound, as long as the properties of the α-olefin copolymer are not impaired.
-It may contain a component unit other than a component unit derived from an olefin.

For example, the component units permitted to be contained in the α-olefin copolymer used in the present invention include 1,4-
Hexadiene, 1,6-octadiene, 2-methyl-1,5-
Hexadiene, 6-methyl-1,5-heptadiene, 7-
Chain non-conjugated dienes such as methyl-1,6-octadiene; cyclohexadiene, dicyclopentadiene, methyltetrahydroindene, 5-vinylnorbornene, 5-
Cyclic non-conjugated dienes such as ethylidene-2-norbornene, 5-methylene-2-norbornene, 5-isopropylidene-2-norbornene, 6-chloromethyl-5-isopropylenyl-2-norbornene; 2,3-diisopropylene Liden-5-norbornene, 2-
Component units derived from diene compounds such as ethylidene-3-isopropylidene-5-norbornene and 2-propenyl-2,2-norbornadiene can be mentioned. Such diene components can be used alone or in combination. The content of such a diene component is usually 1 to 20 mol%, preferably 2 to 15 mol%.

In the ethylene / α-olefin copolymer used in the present invention, the molar ratio of ethylene to α-olefin (ethylene / α-olefin) varies depending on the type of α-olefin, but generally ranges from 1/99 to α / olefin. 99/1, preferably
30/70 to 95/5.

In the propylene / α-olefin copolymer used in the present invention, the molar ratio of propylene to α-olefin (propylene / α-olefin) varies depending on the type of α-olefin, but is generally 30/70. Preferably it is ~ 95/5.

In the present invention, among the α-olefin copolymers as described above, the ethylene content is 30 to 95 mol%, and the crystallinity is
It is particularly preferable to use 10% or less of an ethylene / propylene random copolymer or an ethylene / α-olefin random copolymer.

Further, as the rubber-like elastic body (b) used in the present invention, a graft-modified α-olefin copolymer obtained by graft-modifying the above α-olefin copolymer with an unsaturated carboxylic acid or a derivative thereof is also used. be able to.
Graft-modified α-olefin copolymers are preferred because they are excellent in improving mechanical properties such as impact strength.

As the graft monomer used for producing the above graft-modified α-olefin copolymer, it is preferable to use an unsaturated carboxylic acid or a derivative thereof. Examples of such unsaturated carboxylic acids include acrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, isocrotonic acid, nadic acid (endocis-bicyclo [2,2,1]
Hept-5-ene-2,3-dicarboxylic acid). Further, examples of the derivative of the unsaturated carboxylic acid include unsaturated carboxylic anhydrides, unsaturated carboxylic acid halides, unsaturated carboxylic acid amides, unsaturated carboxylic acid imides and ester compounds of unsaturated carboxylic acids. . Specific examples of such derivatives include maleenyl chloride, maleimide, maleic anhydride, citraconic anhydride, monomethyl maleate, dimethyl maleate, and glycidyl maleate.

These graft monomers can be used alone or in combination.

Among the above graft monomers, unsaturated dicarboxylic acids or acid anhydrides thereof are preferable, and maleic acid, nadic acid or acid anhydrides thereof are particularly preferable.

The graft-modified α-olefin copolymer used in the present invention is produced, for example, by modifying the above-mentioned graft monomer and α-olefin copolymer by employing various conventionally known methods. Can be. For example, there is a method in which the α-olefin copolymer is melted and a graft monomer is added for graft polymerization, or a method in which the α-olefin copolymer is dissolved in a solvent and the graft monomer is added for graft copolymerization. Further, as a method for producing a graft-modified α-olefin copolymer, a method in which an unmodified α-olefin copolymer is modified by blending a graft monomer so as to have a desired graft modification rate, A graft-modified α-olefin copolymer having a desired modification ratio is prepared by diluting the high-modification α-olefin copolymer with an unmodified α-olefin copolymer. There is a method of manufacturing. In the present invention, a graft-modified olefin copolymer produced by any method can be used. And the graft-modified α used in the present invention
-The olefin copolymer has a modification ratio of usually 0.01 to 5
% By weight, preferably in the range of 0.1 to 4% by weight.

Such a reaction is preferably performed in the presence of a radical initiator in order to efficiently graft-copolymerize the graft monomer. The grafting reaction is usually performed at a temperature of 60 to 350 ° C. The usage ratio of the radical initiator is usually in the range of 0.001 to 5 parts by weight based on 100 parts by weight of the unmodified α-olefin elastic copolymer.

As the radical initiator, organic peroxides and organic peresters are preferably used. Specific examples of such radical initiators include benzoyl peroxide,
Dichlorobenzoyl peroxide, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-
2,5-di (peroxidebenzoate) hexyne-3,
1,4-bis (tert-butylperoxyisopropyl) benzene, lauroyl peroxide, tert-butylperacetate, 2,5-dimethyl-2,5- (tert-butylperoxy) hexyne-3,2,5-dimethyl-2 , 5-di (tert-
Butyl peroxy) hexane, tert-butyl perbenzoate, tert-butyl perphenyl acetate, tert-butyl
Butyl perisobutyrate, tert-butyl per-sec-
Octoate, tert-butyl perpivalate, cumyl perpivalate and tert-butyl perdiethyl acetate can be mentioned. Further, in the present invention, an azo compound may be used as a radical initiator, and specific examples of the azo compound include azobisisobutyronitrile and dimethylazoisobutyrate.

Among them, benzoyl peroxide, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexyne-3,2,5-dimethyl are used as radical initiators. −2,5−
Di (tert-butylperoxy) hexane, 1,4-bis (t
Dialkyl peroxides such as (ert-butylperoxyisopropyl) benzene are preferably used.

The graft-modified α-olefin elastic copolymer used in the present invention is usually the above-mentioned graft-modified ethylene α
-The olefin elastic copolymer and the graft-modified propylene / α-olefin elastic copolymer are used alone or in combination, but the above-mentioned graft-modified elasticity is within a range not to impair the characteristics of the graft-modified α-olefin elastic copolymer. The copolymer may include other polymers or copolymers or other graft copolymers.

In the present invention, examples of such another polymer or copolymer include an aromatic vinyl hydrocarbon / conjugated diene copolymer or a hydride thereof.
Specifically, such an aromatic vinyl hydrocarbon / conjugated diene copolymer or its hydride is styrene
Butadiene copolymer rubber, styrene / butadiene / styrene copolymer rubber, styrene / isoprene block copolymer rubber, styrene / isoprene / styrene block copolymer rubber, hydrogenated styrene / butadiene / styrene block copolymer rubber and water A styrene / isoprene / styrene block copolymer rubber can be used.

In the present invention, the rubber-like elastic body (b) as described above
Is used in an amount of 0.5 to 50 parts by weight, preferably 1 to 40 parts by weight, based on 100 parts by weight of the cyclic olefin polymer (a). The ethylene / α-olefin copolymer (c) described later is used in an amount of 5 to 150 parts by weight, preferably 5 to 100 parts by weight, based on 100 parts by weight of the cyclic olefin polymer (a). The crosslinking agent (d) described below is used in an amount of 0.01 to 1 based on 100 parts by weight of the total of the components (a) to (c).
It is used in an amount of part by weight, preferably 0.05 to 0.5 part by weight. By contacting the four components (a) to (d) at such a ratio, a cyclic olefin resin having improved properties such as impact strength can be obtained without impairing the excellent properties of the cyclic olefin polymer (a). Obtainable.

Polyethylene or ethylene / α-olefin copolymer (c) The polyethylene or ethylene / α-olefin copolymer (c) used in producing the cyclic olefin resin according to the present invention has an elastic modulus of 1 kg / cm. a ^{2 ~30000kg} / cm ^2, preferably ^{10kg / cm 2 ~20000kg / cm 2} , particularly preferably ^{10kg / cm 2 ~15000kg / cm 2} .

Polyethylene or ethylene-α- used in the present invention
The glass transition temperature (Tg) of the olefin copolymer (c) is
Usually, it is in the range of 0 ° C or less. Furthermore, this ethylene α
-The intrinsic viscosity [η] of the olefin copolymer (c) measured in decalin at 135 ° C is 0.01 to 10 dl / g, preferably 0.1 to 10 dl / g.
It is desirably from 08 to 7 dl / g. The degree of crystallinity of this polyethylene or ethylene / α-olefin copolymer (c) measured by X-ray diffraction was 30%.
That is all.

Among the above, the α-olefin constituting the polyethylene or the ethylene / α-olefin copolymer (c) is usually an α-olefin having 3 to 20 carbon atoms, for example, propylene, 1-butene, 1-pentene, -Hexene, 4-methyl-1-pentene, 1-octene, 1-decene and mixtures thereof. Of these, α-olefins having 3 to 10 carbon atoms are particularly preferred.

The polyethylene or ethylene / α-olefin copolymer (c) used in the present invention is derived from a diene compound as long as the properties of the polyethylene or ethylene / α-olefin copolymer (c) are not impaired. Component units other than the component units derived from α-olefins such as component units.

For example, as the component unit allowed to be contained in the polyethylene or ethylene / α-olefin copolymer (c) used in the present invention, 1,4-hexadiene,
1,6-octadiene, 2-methyl-1,5-hexadiene,
Chain non-conjugated dienes such as 6-methyl-1,5-heptadiene, 7-methyl-1,6-octadiene; cyclohexadiene, dicyclopentadiene, methyltetrahydroindene, 5-vinylnorbornene, 5-
Cyclic non-conjugated dienes such as ethylidene-2-norbornene, 5-methylene-2-norbornene, 5-isopropylidene-2-norbornene, 6-chloromethyl-5-isopropylenyl-2-norbornene; 2,3-diisopropylene Liden-5-norbornene, 2-
Component units derived from diene compounds such as ethylidene-3-isopropylidene-5-norbornene and 2-propenyl-2,2-norbornadiene can be mentioned. Such diene components can be used alone or in combination. The content of such a diene component is usually 1 to 20 mol%, preferably 2 to 15 mol%.

In the ethylene / α-olefin copolymer (c) used in the present invention, the molar ratio of ethylene to α-olefin (ethylene / α-olefin) varies depending on the type of α-olefin, but is generally 1%. / 99 to 99/1, preferably 50/50 to 95/5.

Further, as the polyethylene or the ethylene / α-olefin copolymer (c) used in the present invention, the polyethylene or the α-olefin copolymer as described above may be used.
A graft-modified polyethylene or a graft-modified ethylene / α-olefin copolymer graft-modified with an unsaturated carboxylic acid or a derivative thereof can also be used.
Graft-modified polyethylene or a graft-modified ethylene / α-olefin copolymer is preferred because it has an excellent effect of improving mechanical properties such as impact strength.

As the graft monomer used for producing the above-mentioned graft-modified polyethylene or graft-modified α-olefin copolymer, it is preferable to use the above-mentioned unsaturated carboxylic acid or its derivative.

And, the graft-modified polyethylene or the graft-modified ethylene α- preferably used in the present invention.
The olefin copolymer is a copolymer having a modification ratio in the range of usually 0.01 to 5% by weight, preferably 0.1 to 4% by weight.

Such a reaction is preferably performed in the presence of a radical initiator in order to efficiently graft-copolymerize the graft monomer. The grafting reaction is usually performed at a temperature of 60 to 350 ° C. The usage ratio of the radical initiator is usually 0.001 to 100 parts by weight of unmodified polyethylene or unmodified ethylene / α-olefin copolymer.
-5 parts by weight.

As the radical initiator, organic peroxides and organic peresters are preferably used. Specific examples of such a radical initiator include those similar to the radical initiator used in producing the rubber-like elastic material described above. Can be exemplified.

In the graft-modified polyethylene or the graft-modified ethylene / α-olefin copolymer used in the present invention, the above-mentioned graft-modified elastic copolymer is used as another polymer or copolymer or other copolymer as long as its properties are not impaired. May be included.

In the present invention, examples of such another polymer or copolymer include an aromatic vinyl hydrocarbon / conjugated diene copolymer or a hydride thereof.
Specifically, an aromatic vinyl hydrocarbon / conjugated diene copolymer or a hydride thereof which can be added to the rubber-like elastic material described above can be exemplified.

The above polyethylene or ethylene / α-olefin copolymer (c) is used in an amount of 5 to 150 parts by weight, preferably 5 to 150 parts by weight, based on 100 parts by weight of the cyclic olefin polymer (a).
Used in amounts of up to 100 parts by weight.

Crosslinking Agent (d) As the crosslinking agent (d) used in producing the cyclic olefin-based resin, an organic peroxide, a cationic polymerization initiator, and an amino group-containing compound can be preferably used.

When the components (a) to (d) are brought into contact, the crosslinking agent (d)
Is 0.0 with respect to 100 parts by weight of the total of the components (a) to (c).
It is used in an amount of 1 to 1 part by weight, preferably 0.05 to 0.5 part by weight. As a method of contact, a known method can be applied, for example, each component can be mixed simultaneously,
It is preferable to mix the components (a), (b) and (c) and then mix the component (d). In this case, components such as other additives are preferably mixed simultaneously with the components (a), (b) and (c), and the component (d) is mixed with the components (a), (b) and (c). In this case, it is preferable that the component (d) is also sufficiently mixed.

The composition of the components (a), (b), and (c) is (a),
The components (b) and (c) are manufactured separately, and (a), (b),
A method in which the component (c) is blended with an extruder to produce, or a component (a), (b) or (c) is a suitable solvent, for example, a saturated hydrocarbon such as heptane, hexane, decane or cyclohexane, toluene , Benzene, xylene and a solution blending method in which the polymer is obtained by synthesizing the components (a), (b) and (c) in separate polymerization reactors. It can be produced by a method of blending in a container. The composition (a), (b), and (c) thus obtained is added to the composition (d) and blended to obtain the cyclic olefin resin of the present invention.

The cyclic olefin-based resin of the present invention is reacted at a temperature at which the crosslinking agent (d) is decomposed or reacted,
A cyclic olefin-based resin can be obtained.

The organic peroxide, the cationic polymerization initiator, and the amino group-containing compound will be specifically described with reference to examples.

Organic peroxide Specific examples of the organic peroxide include ketone peroxides such as methyl ethyl ketone peroxide and cyclohexanone peroxide; 1,1-bis (t-butylperoxy) cyclohexane, 2,2-bis Peroxy ketals such as (t-butylperoxy) octane; t-butyl hydroperoxide, cumene hydroperoxide, 2,5-dimethylhexane-2,5-dihydroxy peroxide, 1,1,3,3- Hydroperoxides such as tetramethylbutyl hydroperoxide; di-t-butyl peroxide, 2,5-dimethyl-2,5-
Dialkyl peroxides such as di (t-butylperoxy) hexane and 2,5-dimethyl-2,5- (t-butylperoxy) hexyne-3; diacyl peroxides such as lauroyl peroxide and benzoyl peroxide Peroxyesters such as t-butylperoxyacetate, t-butylperoxybenzoate, and 2,5-dimethyl-2,5-di (benzoylperoxy) hexane; Such organic peroxides can be used alone or in combination of two or more. When the above organic peroxide is used, it is preferable to use a compound having two or more radically polymerizable functional groups in the molecule. Examples of the compound having two or more radically polymerizable functional groups in a molecule include divinylbenzene, vinyl acrylate, vinyl methacrylate, triaryl isocyanurate, diaryl phthalate, ethylene dimethacrylate, and trimethylolpropane trimethacrylate. be able to.

Cationic Polymerization Initiator The above cationic polymerization initiator is described in Toshinobu Higashimura, Lecture Polymerization Theory, Vol. 3, “Cation Polymerization”, Kagaku Dojin, 1974
The initiators mentioned in Chapter 2 of the Year, ie, protic acids, metal oxides, halogens, metal halides, organometallic compounds, and stable cations, are preferred. Of these, protonic acids and metal halides are preferred. As the protonic acid, specifically, H ₃ PO ₃ , H ₂ SO ₄ , HClO ₄ , HCl, HBr, Cl ₃ CO
₂ H, CHCl ₂ CO ₂ H, CF ₃ CO ₂ H, H (CF ₂ ) ₆ CO ₂ H, ClSO ₃ H, FS
O ₃ H, p-toluenesulfonic _{acid, CF 3 SO 3 H, CH} 3 COClO
₄ (acetyl perchlorate) and the like.
As the metal halide, Be, Mg, Zn, Cd, Hg, B, Al, G
a, Ti, Zr, Sn, P, Sb, Nb, Bi, Ta, U, Re, Fe and other metal halides. Among these, in particular, B, Al, Ti, Sn, Fe halide Is preferred. Specifically, boron trifluoride (BF ₃ ), boron trifluoride-diethyl ether complex (BF ₃
O (C ₂ H ₅ ) ₂ ), boron trifluoride-phenol complex (BF ₃
HOC ₆ H ₅ ), an organoaluminum compound represented by the general formula R _n AlX _3-n (x is any of chlorine, bromine, iodine or fluorine, n is a value satisfying 0 ≦ n <3, R is alkyl Group), titanium tetrachloride (TiCl ₄ ), tin tetrachloride (SnCl ₄ ), iron trichloride (FeCl ₃ ), and the like.

Examples of the organoaluminum compounds represented by R _n AlX _3-n, such as diethyl aluminum chloride, diethyl aluminum pro bromide, ethylaluminum sesquichloride, ethylaluminum sesquichloride pro bromide, ethyl aluminum dichloride, ethyl aluminum dipropionate bromide and the like. As long as the composition is R _n AlX _3-n, it may be a mixture of various organic aluminum compounds.

These cationic polymerization initiators can be used alone or in combination of two or more.

Amino group-containing compound As the amino group-containing compound, at least 2
Compounds having one amino group can be used.

Examples of such an amino group-containing compound include ethylenediamine, propylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, iminobispropylamine, bis (hexamethylene) triamine, 1,3,
Aliphatic amines such as 6-trisaminomethylhexane, trimethylhexamethylenediamine, diethylene glycol, bispropylenediamine, diethylaminopropylamine; mensendiamine, isophoronediamine, bis (4
-Amino-3-methylcyclohexyl) methane, N-aminoethylpiperazine, aliphatic amines such as 1,3-diaminocyclohexane; aliphatic aromatic amines such as meta-xylylenediamine; o-, m-, p-phenylenediamine; Diaminodiphenylmethane, diaminodiphenylsulfone, 2,4-diaminoanisole, 2,4-toluenediamine, 2,4-diaminodiphenylamine, 4,4′-methylenedianiline,
Aromatic amines such as diaminodixylylsulfone; bisspirocyclic diamines such as 3,9-bis (3-aminopropyl) -2,4,8,10-tetraspiro [5,5] undecane;

Such amino group-containing compounds can be used alone or in combination of two or more.

Further, the cyclic olefin resin according to the present invention, a rubber component for improving impact strength, or a heat stabilizer, weather stabilizer, antistatic agent, slip agent, antiblocking agent, antifogging agent, lubricant, Dyes, pigments, natural oils, synthetic oils, waxes, and the like can be blended, and the blending ratio is an appropriate amount. For example, as a stabilizer blended as an optional component, specifically, tetrakis [methylene-3]
(3,5-di-t-butyl-4-hydroxyphenyl) propionate] methane, β- (3,5-di-butyl-4-
(Hydroxyphenyl) propionic acid alkyl ester,
Phenolic antioxidants such as 2,2'-oxamidobis [ethyl-3 (3,5-di-tert-butyl-4-hydroxyphenyl)] propionate; zinc stearate, calcium stearate, calcium 12-hydroxystearate and the like. Fatty acid metal salts, fatty acid esters of polyhydric alcohols such as glycerin monostearate, glycerin monolaurate, glycerin distearate, pentaerythritol monostearate, pentaerythritol distearate, pentaerythritol tristearate and the like can be mentioned. . These may be blended alone or in combination. For example, tetrakis [methylene-3 (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] methane and zinc stearate may be used. Examples thereof include a combination with glycerin monostearate.

In the present invention, it is particularly preferable to use a combination of a phenolic antioxidant and a fatty acid ester of a polyhydric alcohol.
It is preferable that the polyhydric alcohol is a polyhydric alcohol fatty acid ester in which a part of the alcoholic hydroxyl group of the polyhydric alcohol having a valency or higher is esterified.

As the fatty acid ester of such a polyhydric alcohol, specifically, glycerin monostearate, glycerin monolaurate, glycerin monomyristate, glycerin monopalmitate, glycerin distearate, glycerin fatty acid esters such as glycerin dilaurate, Pentaerythritol monostearate, pentaerythritol monolaurate, pentaerythritol dilaurate, pentaerythritol distearate,
Fatty acid esters of pentaerythritol such as pentaerythritol tristearate are used.

Such a phenolic antioxidant is used in an amount of 0 to 10 parts by weight, preferably 0 to 5 parts by weight, more preferably 0 to 2 parts by weight, based on 100 parts by weight of the cyclic olefin resin. The alcohol fatty acid ester is used in an amount of 0 to 10 parts by weight, preferably 0 to 5 parts by weight, based on 100 parts by weight of the cyclic olefin resin.

In the present invention, silica, diatomaceous earth, alumina, titanium oxide, magnesium oxide, pumice powder, pumice balloon, aluminum hydroxide, magnesium hydroxide, basic Magnesium carbonate, dolomite, calcium sulfate, potassium titanate, barium sulfate, calcium sulfite, talc, clay, mica, asbestos, glass fiber, glass flake, glass beads, calcium silicate, montmorillonite, bentonite, graphite, aluminum powder, molybdenum sulfide , Boron fiber, silicon carbide fiber,
Fillers such as polyethylene fibers, polypropylene fibers, polyester fibers, and polyamide fibers may be blended.

Although the above-mentioned cyclic olefin-based resin shows the above-mentioned excellent properties, various kinds of polymers can be further blended in the resin of the present invention as long as the properties of the resin are not impaired. The following polymers (1) to (17) can be blended with the cyclic olefin resin.
Can be exemplified.

(1) Polymer derived from hydrocarbon having one or two unsaturated bonds Specifically, for example, polyethylene, polypropylene,
Polymethylbutene-1, poly-4-methylpentene-1,
Polyolefins such as polybutene-1 and polystyrene. These polyolefins may have a crosslinked structure.

(2) Halogen-containing vinyl polymer Specifically, polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polychloroprene, chlorinated rubber, etc. (3) Polymer derived from α, β-unsaturated acid and its derivative Coalescence, specifically polyacrylate, polymethacrylate, polyacrylamide, polyacrylonitrile, or a copolymer with a monomer constituting the polymer, for example, an acrylonitrile-butadiene-styrene copolymer, an acrylonitrile-styrene copolymer, (4) Polymers derived from unsaturated alcohols and amines or their acyl derivatives or acetal, such as acrylonitrile-styrene-acrylate copolymers, specifically polyvinyl alcohol, polyvinyl acetate, polyvinyl stearate, Vinyl benzoate, (5) polymers derived from epoxides, such as copolymers with vinyl rimaleate, polyvinyl butyral, polyallyl phthalate, polyallyl melamine, or monomers constituting the polymer, such as ethylene and vinyl acetate copolymers; (6) Polyacetals, specifically, polyoxymethylene, polyoxyethylene, polyoxymethylene containing ethylene oxide as a comonomer, (7) (8) Polycarbonate, (9) Polysulfone, (10) Polyurethane and urea resins, (11) Diamines and polyamides derived from dicarboxylic and / or aminocarboxylic acids or the corresponding lactams. And copolyamides, specifically nylon 6, nylon 66, nylon 11, nylon 12, etc. (12) Polyesters derived from dicarboxylic acids and dialcohols and / or oxycarboxylic acids or the corresponding lactones, specifically polyesters (13) Polymers having a crosslinked structure derived from aldehyde and phenol, urea or melamine, such as terephthalate, polybutylene terephthalate, poly 1,4-dimethylol / cyclohexane terephthalate,
(14) Alkyd resin, specifically glycerin / phthalic acid resin, etc. (15) Copolyester of saturated and unsaturated dicarboxylic acid and polyhydric alcohol, such as phenol / formaldehyde resin, urea / formaldehyde resin, melamine / formaldehyde resin (16) Natural polymers, specifically cellulose, rubber, proteins, or derivatives thereof, such as cellulose acetate (17) Soft polymers or copolymers of isobutylene or isobutylene / conjugated diene Specifically, polyisobutylene rubber, polyisoprene rubber, polybutadiene rubber, isobutylene / isoprene And copolymer rubber.

A known method can be applied as a method for producing the cyclic olefin resin composition using the cyclic olefin resin according to the present invention, and the cyclic olefin obtained by bringing the components (a) to (d) into contact with each other. An extruder, a method of mechanically blending other components to be added as required with an extruder, a kneader, or a suitable good solvent such as hexane, heptane, decane, cyclohexane, benzene, toluene, xylene, etc. A method of dissolving in a hydrocarbon solvent at the same time or a method of separately dissolving and mixing each other to remove the solvent, a method of combining these two methods, and the like can be given.

Effects of the Invention According to the present invention, it is possible to provide a cyclic olefin-based resin having excellent heat resistance, impact resistance, rigidity, strength, moldability, and scratch resistance. Further, the cyclic olefin-based resin according to the present invention is not only excellent in the above-described properties, but also has a remarkably excellent thermal adhesion to different materials such as various resins and metals. It can be suitably used for applications such as metal coating. Specifically, automobile parts, mechanical housings, mechanical parts, gaskets for construction materials, civil engineering or architectural waterproof sheets, industrial hoses and tubes, housings for home appliances, and housings exemplified in the following (1) to (3): It can be widely used for applications such as bags, sporting goods, and office supplies.

(1) Automotive parts Instrument panel, console box, door trim, pillar, meter cluster, column cover, grill door mirror, fender, bonnet, radiator grill, side protect mall, bumper, soft facia, mudguard, glass run channel,
Windshield gasket.

(2) Machine housing Tools (power tools), office equipment (word processors, personal computers, copiers, printers, FDDs, CRTs), precision equipment (cameras),
Home appliances (microwave oven, electric kettle, refrigerator, pot, vacuum cleaner).

(3) Machine parts Sirocco fans for air conditioners.

[Examples] Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples. The methods for measuring and evaluating various animal properties in the present invention are described below.

(1) Preparation of Test Specimen Using an injection molding machine IS-55 manufactured by Toshiba Machine Co., Ltd. and a predetermined test specimen mold, molding was performed under the following molding conditions. The test pieces were left for 48 hours at room temperature after molding and then subjected to measurement.

Molding conditions: cylinder temperature 270 ° C, mold temperature 70 ° C, injection pressure primary / secondary = 1000 / 600kg / cm ² , injection speed (primary)
30 mm / sec, screw rotation speed 150 rpm, cycle ([injection + holding pressure] / cooling) = 7/15 sec (2) Bending test The bending test was performed according to ASTM D790.

Test specimen shape: 5 x 1/2 x 1/8 ^t inch, distance between spans 51 mm Test speed: 20 mm / min Test temperature: 23 ° C (3) Izod impact test The test was performed according to ASTM D256.

Test specimen shape: 5/2 × 1/2 × 1/8 ^t inch (with notch) Test temperature: 23 ° C. (4) Heat deformation temperature (HDT) This was performed according to ASTM D648.

Specimen shape: 5 x 1/4 x 1/2 ^t inch Load: 264 psi (5) Softening temperature (TMA) Measured by thermal deformation behavior of a 1 mm thick sheet using a Thermo Mechanical Analyzer manufactured by DuPont. That is, a quartz needle is placed on the sheet, a load of 49 g is applied, and 5 ° C.
The temperature was raised at a rate of / minute, and the temperature at which the needle penetrated 0.635 mm was defined as TMA.

(6) Melt flow index (MFR ₂₆₀ ° C.) Measured at a temperature of 260 ° C. and a load of 2.16 kg according to ASTM D1238.

(7) Rockwell hardness (R scale) According to ASTM D785.

Example 1 Ethylene content 62 measured by ¹³ C-NMR as component (a) 62
Mol%, MFR ₂₆₀ ° C 7.8 / 10 min, intrinsic viscosity [η] measured in decalin at 135 ° C 0.61 dl / g, softening temperature (TMA) 147 ° C, Tg
136 ° C ethylene and 1,4,5,8-dimetano-1,2,3,4,4a, 5,
8,8a-octahydronaphthalene (structural formula: (Hereinafter abbreviated as DMON) 4 kg of random copolymer pellets,
As the component (b), an ethylene / propylene random copolymer (ethylene content 80 mol%, Tg-54 ° C, MFR ₂₃₀ ° C 0.7 g / 1
0 min, [η] 2.2 dl / g, elastic modulus = 400 kg / cm ² ) pellet
0.7 kg, ethylene-methylpentene-1 copolymer (MFR ₂₃₀ ° C. = 18 g / 10 min, crystallinity = 50 as component (c))
%, Density = 0.92, elastic modulus = 3000 kg / cm ² ) 0.47
After fully mixing kg, twin screw extruder (Ikegai Iron Works Co., Ltd.)
It was melt-blended at 230 ° C. cylinder temperature by PCM 45) and pelletized with a pelletizer. Obtained (a)
For 1 kg of a pellet consisting of the components (b) and (c), perhexin manufactured by NOF Corporation was used as the component (d).
1 g of 25B (trademark) and 3 g of divinylbenzene were added and mixed well. The mixture was reacted in a molten state using the twin-screw extruder (cylinder temperature 230 ° C.), and pelletized with a pelletizer.

A test piece was prepared from the obtained pellets by the method described above, and the physical properties were measured.

 Table 1 shows the results.

Example 2 Ethylene / propylene / ethylidene norbornene copolymer (ethylene content = 67 mol%, ethylidene norbornene content = 3 mol%, Tg = −45 ° C.,
[Η] = 2.2 dl / g) was performed in the same manner as in Example 1.

Comparative Example The same operation as in Example 2 was performed except that the component (c) was not used. Flexural modulus of the resulting composition, flexural strength, Izod impact strength, HDT, and each color difference after a light resistance test ^{21200kg / cm 2, 780kg / cm} 2, 13kg · cm / cm, 120 ℃,
Rockwell hardness was 105 and MFR was 2.6.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yozo Yamamoto 61-2, Waki, Waki-machi, Kuga-gun, Yamaguchi Prefecture Inside Mitsui Petrochemical Industry Co., Ltd. (72) Inventor Hideki Sakai Waki, Waki-cho, Yamaguchi Prefecture 6-1-2, Mitsui Petrochemical Industry Co., Ltd. (56) References JP-A-2-167318 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C08L 23/08 C08J 3/24 C08L 23/16 C08L 23/26 C08L 45/00

Claims (1)

(57) [Claims] (A) at least one cyclic olefin polymer selected from the group consisting of the following groups (a) to (d): 100 parts by weight; and (b) an elastic modulus of 0.1 kg / cm ^2. ~20000kg / cm ^2, glass transition point (Tg) of 0 ℃ or less, the rubber-like elastic material crystallinity of 30% or less; and 0.5 to 50 parts by weight, (c) modulus of 1 kg / cm ² a ~30000kg / cm ^2, glass transition point (Tg) of 0 ℃ or less, polyethylene or ethylene · alpha-olefin polymer crystallinity is 30% or more; 5
To 150 parts by weight, and (d) a crosslinking agent; a cyclic olefin-based resin obtained by reacting 0.01 to 1 part by weight with respect to a total of 100 parts by weight of the components (a) to (c); And a cyclic olefin represented by the following formula [I] or [1 ′], wherein the intrinsic viscosity “η” measured in decalin at 135 ° C. is in the range of 0.05 to 10 dl / g, An ethylene / cyclic olefin copolymer having a softening temperature (TMA) of 70 ° C. or higher; (b) a ring-opened polymer of a cyclic olefin represented by the following formula [I] or [I ′], wherein 135 ° C. A cyclic olefin ring-opened polymer having an intrinsic viscosity [η] in the range of 0.05 to 10 dl / g and a softening temperature (TMA) of 70 ° C. or more in decalin; (c) the following formula [I] or [ I ′] is a ring-opening copolymer of two or more cyclic olefins, and has an intrinsic viscosity [135] measured in decalin at 135 ° C. η] is in the range of 0.05 to 10 dl / g and the softening temperature (TMA) is 70 ° C. or more; a cyclic olefin ring-opening copolymer; (d) the hydrogenated product of (b) or (c) above. (In the formula, n is 0 or 1, m is 0 or a positive integer, and R ^{1 to} R ¹⁸ are each independently an atom selected from the group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group. R ^{15 to} R ¹⁸ may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond; R ¹⁵ and R ¹⁶ or R ¹⁷ and R ¹⁸ may form an alkylidene group.) (In the formula [I '], p is 0 or an integer of 1 or more;
And r are 0, 1 or 2, and R ^{1 to} R ¹⁵ are each independently an atom selected from the group consisting of a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group, an aromatic hydrocarbon group, and an alkoxy group Or a group, R ⁵ (or R ⁶ ) and
R ⁹ (or R ⁷ ) may be bonded via an alkylene group having 1 to 3 carbon atoms, or may be directly bonded without any group. )