WO2017104731A1 - 積層体およびその製造方法、ならびに接着用組成物 - Google Patents
積層体およびその製造方法、ならびに接着用組成物 Download PDFInfo
- Publication number
- WO2017104731A1 WO2017104731A1 PCT/JP2016/087330 JP2016087330W WO2017104731A1 WO 2017104731 A1 WO2017104731 A1 WO 2017104731A1 JP 2016087330 W JP2016087330 W JP 2016087330W WO 2017104731 A1 WO2017104731 A1 WO 2017104731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- group
- polyolefin
- laminate
- adhesive composition
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D65/40—Applications of laminates for particular packaging purposes
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- C09J2423/00—Presence of polyolefin
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Definitions
- the present invention relates to a novel laminate, a method for producing the same, and an adhesive composition.
- polyketone is expected as a food storage or food packaging material because of its excellent gas barrier properties.
- polyketone is usually used as a laminate with polyolefin because of its poor heat seal characteristics and impact strength, but it usually has some adhesive layer because of its poor adhesion to other resins such as polyolefin. It is said.
- an adhesive layer of a polyketone and a polyolefin for example, a polyolefin modified with an unsaturated carboxylic acid and further modified with an amine has been proposed (for example, Patent Document 1).
- an adhesive layer made of an adhesive composition containing a graft-modified polyolefin and a tackifier has been proposed (for example, Patent Document 2).
- polyphenylene sulfide (hereinafter also referred to as PPS) has characteristics of high heat resistance and high chemical resistance, and is used in electronic parts, mechanical parts, medical parts, hot water pipes and the like.
- PPS polyphenylene sulfide
- modified polyolefin adheresive resin obtained by graft polymerization of an epoxy group-containing ethylenically unsaturated monomer to polyolefin is studied.
- a resin such as polyketone and polar resin (eg PPS) and a conventional adhesive layer.
- polyketone the adhesive layer is produced in a liquid amine used for modification, and special equipment and processes are used to blend the polyolefin (solid) modified with unsaturated carboxylic acid and the amine (liquid). It was necessary and complicated. In handling amines, there are various problems such as being not easy and harmful to the human body.
- polar resins such as PPS
- the adhesive resin has low heat resistance, and there is a problem that the adhesive strength with the polar resin is greatly reduced in a high temperature atmosphere.
- maleic anhydride graft-modified polyolefin has been studied as an adhesive resin having high heat resistance, but it is difficult to adhere to a polar resin with the polyolefin.
- an object of the present invention is to provide a laminate that can be easily produced and has sufficient adhesive strength between a layer containing a resin such as a polyketone and a polar resin (e.g., PPS) and an adhesive layer.
- a resin such as a polyketone and a polar resin (e.g., PPS)
- an adhesive layer e.g., PPS
- an object of the present invention is to provide a laminate having sufficient adhesive strength not only at room temperature but also in a high temperature atmosphere.
- the present invention includes, for example, the following [1] to [13].
- a polyolefin that is a reaction product of a polyolefin (a) having a group that reacts with a carbodiimide group and a carbodiimide group-containing compound (b) is included.
- the carbodiimide group is contained in an amount of 0.1 to 50 mmol per 100 g of the adhesive composition.
- the density is 0.870 to 0.940 g / cm 3 .
- a carbonyl group and a divalent organic group derived from an ethylenically unsaturated compound or a divalent organic group formed by linking two or more of the organic groups are alternately bonded.
- a polyolefin that is a reaction product of a polyolefin (a) having a group that reacts with a carbodiimide group and a carbodiimide group-containing compound (b) is included.
- the carbodiimide group is contained in an amount of 0.1 to 50 mmol per 100 g of the adhesive composition.
- a polyolefin that is a reaction product of a polyolefin (a) having a group that reacts with a carbodiimide group and a carbodiimide group-containing compound (b) having 10 or more carbodiimide groups in one molecule is included.
- the carbodiimide group is contained in an amount of 0.1 to 50 mmol per 100 g of the adhesive composition.
- the density is 0.870 to 0.940 g / cm 3 .
- a polyolefin having a carbodiimide group preferably a polyolefin (a) having a group that reacts with a carbodiimide group and a carbodiimide group-containing compound (b), which can be easily produced together
- a polyolefin having a carbodiimide group preferably a polyolefin (a) having a group that reacts with a carbodiimide group and a carbodiimide group-containing compound (b)
- a layer containing a resin such as polyketone and polar resin (eg, PPS)
- PPS polar resin
- the adhesive composition as an adhesive layer between a polyketone layer and a resin layer made of a resin other than a polyketone such as polyolefin, for example, the polyketone layer and the resin layer are strengthened.
- the laminated body bonded can be obtained more easily.
- the laminate of the present invention comprises a layer (A) containing a resin having no active hydrogen in the main molecular skeleton, and an adhesive layer (B) comprising at least a part of the adhesive composition described later in contact with the layer (A). And have. Specific examples thereof include the following first laminate and second laminate.
- the second laminate has a layer (A2) containing a polar resin and an adhesive layer (B) made of an adhesive composition to be described later at least partially in contact with the layer (A2).
- the adhesive composition is also referred to as an adhesive.
- the layer (A) contains a resin having no active hydrogen in the main molecular skeleton.
- the main molecular skeleton in the resin means a molecular portion excluding molecular ends.
- the resin include polyketone and polar resins other than polyketone.
- the layer (A1) comprises polyketone.
- the polyketone for example, a carbonyl group (CO) and a divalent organic group derived from an ethylenically unsaturated compound or a divalent organic group formed by linking two or more of the organic groups are alternately bonded. Examples thereof include linear polymers, which are generally represented by the general formula (1).
- A is a divalent organic group derived from an ethylenically unsaturated compound
- m is 1 to 6
- n is an integer of 2 or more, preferably an integer of 2 to 6000.
- Such polyketones are known and are usually polymers obtained by polymerizing carbon monoxide and ethylenically unsaturated compounds.
- Examples of the ethylenically unsaturated compound include ⁇ -olefins having 2 to 12 carbon atoms such as ethylene, propylene, 1-butene, isobutylene and 1-pentene, preferably linear ⁇ -olefins having 2 to 6 carbon atoms.
- the ethylenically unsaturated compound is preferably a linear ⁇ -olefin having 2 to 6 carbon atoms, and particularly preferably contains only ethylene or ethylene and propylene. Therefore, the polyketone is preferably an ethylene / carbon monoxide copolymer and an ethylene / propylene / carbon monoxide copolymer.
- the ethylenically unsaturated compounds may be used alone or in combination of two or more. In the latter case, it is preferable to use a combination of ethylene and a linear ⁇ -olefin having 3 to 6 carbon atoms, particularly propylene. In this case, the molar ratio of ethylene / C3-C6 linear ⁇ -olefin is preferably larger than 1, more preferably 2-30.
- the melting point is usually 175 to 300 ° C., preferably 210 to 270 ° C.
- the intrinsic viscosity (IV) measured with a standard capillary viscometer in m-cresol is usually 0.5 to 10 dl / g, Preferably, it is 0.8 to 4 dl / g.
- AKROTEK PK-HM manufactured by AKRO-PLASTIC
- Carilon manufactured by Shell are listed.
- Polyketones may be used alone or in combination of two or more.
- Polyester, polycarbonate, PPS, polyphenylene oxide, polyether sulfone, polyacetal, and the like are examples of polar resins that do not have active hydrogen other than molecular ends and do not have active hydrogen in the main molecular skeleton.
- Polar resin may be used individually by 1 type, or may use 2 or more types.
- the amount derived from the compound (m) having a group that reacts with a carbodiimide group in the polyolefin (a) having a group that reacts with a carbodiimide group is usually 0.05 to 20% by weight. It is preferably 0.05 to 5% by weight, more preferably 0.05 to 3% by weight.
- the amount derived from the compound (m) having a group that reacts with a carbodiimide group is within the above range, the polyolefin (a) and the carbodiimide group-containing compound (b) are suitably crosslinked to produce an adhesive composition. This is preferable. Below the above range, the adhesive strength may be insufficient.
- Polycarbodiimide can be produced by subjecting organic diisocyanate such as aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate and the like to a decarboxylation condensation reaction in the presence of a condensation catalyst in a solvent-free or inert solvent.
- organic diisocyanate such as aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate and the like to a decarboxylation condensation reaction in the presence of a condensation catalyst in a solvent-free or inert solvent.
- the carbodiimide group-containing compound (b) may contain monocarbodiimide in polycarbodiimide, or a single compound or a mixture of plural compounds may be used.
- the 13 C-NMR measurement is performed, for example, as follows. That is, 0.35 g of a sample is dissolved by heating in 2.0 ml of hexachlorobutadiene. After this solution is filtered through a glass filter (G2), 0.5 ml of deuterated benzene is added and charged into an NMR tube having an inner diameter of 10 mm. Then, 13 C-NMR measurement is performed at 120 ° C. using a GX-500 type NMR measurement apparatus manufactured by JEOL Ltd. The number of integration is 10,000 times or more.
- the reaction method is not particularly limited. After the polyolefin (a) and the carbodiimide group-containing compound (b) are charged into, for example, a Henschel mixer, a V-type blender, a tumbler blender, a ribbon blender, etc. Examples thereof include a melt kneading method using an extruder, a multi-screw extruder, a kneader, a Banbury mixer and the like.
- an apparatus excellent in kneading performance such as a multi-screw extruder, kneader, Banbury mixer and the like because an adhesive composition in which each component is more uniformly dispersed and reacted can be obtained.
- the polyolefin (a) and the carbodiimide group-containing compound (b) are mixed in advance and then supplied from the hopper. Some components are supplied from the hopper and installed in an arbitrary portion between the vicinity of the hopper and the tip of the extruder. Any method of supplying other components from the supply port can be employed.
- the content of carbodiimide groups in the adhesive composition is 0.1 to 50 mmol, preferably 0.2 to 40 mmol, more preferably 0.5 to 30 mmol per 100 g of the adhesive composition. Within this range, the adhesiveness is excellent, and crosslinking of the polyolefin (a) through the carbodiimide group-containing compound (b) can be suppressed, which is preferable.
- the adhesive composition is produced by reacting the carbodiimide group (NCN) of the carbodiimide group-containing compound (b) with a group that reacts with the carbodiimide group of the polyolefin (a) as described above.
- a certain amount of carbodiimide group is consumed in the process, and the residue of the carbodiimide group connected to the polyolefin group as the same molecular chain contributes to the adhesion to the polyketone or polar resin.
- the content of the carbodiimide group exceeds the above range, the polyolefin (a) having a group that reacts with the carbodiimide group has an excess of free carbodiimide groups in the adhesive composition, Molding processability decreases.
- reaction rate between the polyolefin (a) and the carbodiimide group-containing compound (b) can be evaluated by the following method.
- each hot press sheet for the polyolefin (a) (reference) having a group that reacts with the carbodiimide group and an adhesive composition preferably containing a polyolefin having a carbodiimide group
- infrared absorption analysis is performed. Infrared absorption is measured using a device. From the obtained chart, the absorbance derived from the group reacting with the carbodiimide group in the polyolefin (a), the absorbance derived from the group reacting with the carbodiimide group in the polyolefin (a), and the carbodiimide group in the adhesive composition
- the reaction rate can be calculated using the following formula ( ⁇ 1) by comparing the difference with the absorbance derived from the group to be reacted.
- absorbance near 1790 cm ⁇ 1 can be used.
- the density of the adhesive composition (measured in accordance with JIS K7112) is 0.870 to 0.940 g / cm 3 , preferably 0.875 to 0.940 g / cm 3 , more preferably 0.8. 880 to 0.940 g / cm 3 .
- the density of the adhesive composition is 0.870 to 0.940 g / cm 3 , preferably 0.875 to 0.940 g / cm 3 , more preferably 0.8. 880 to 0.940 g / cm 3 .
- the adhesive composition may contain a polyolefin in which a carbodiimide group is converted to a urea group by, for example, water in the atmosphere, and is one of the preferred embodiments of the present invention.
- the adhesive composition includes a polyolefin obtained by reacting the polyolefin (a) and the carbodiimide group-containing compound (b), but within a range not impairing the object of the present invention, the polyolefin (a) and the polyolefin preferably having a carbodiimide group
- Different resins may be included. Examples of such a resin include a modified resin having a group that reacts with a carbodiimide group in addition to an unmodified polyolefin, and examples thereof include a maleic acid-modified resin and an imine-modified resin.
- attachment may also contain unreacted polyolefin (a). These resins may be used alone or in combination of two or more.
- the adhesive layer (B) is particularly suitable for adhesion between the polyolefin layer and the polyketone layer.
- the monomer which has a polar group for example, a carbonyl group, a hydroxyl group, an ether bond group, etc.
- numerator for example, the monomer which has a polar group (for example, a carbonyl group, a hydroxyl group, an ether bond group, etc.) and a polymerizable carbon-carbon double bond in a molecule
- numerator is mentioned.
- polyolefin examples include, for example, (1) ethylene homopolymer (the production method may be either a low pressure method or a high pressure method), (2) 99 to 80 mol% of ethylene, and 1 to 20 mol% of propylene.
- Ethylene / propylene copolymer preferably 95 to 85 mol% of ethylene and 5 to 15 mol% of propylene, (3) 99 to 80 mol% of ethylene and 1 to 1 of 1-butene 20 mol% ethylene / 1-butene copolymer, preferably 95-85 mol% ethylene and 5-15 mol% ethylene / 1-butene copolymer, (4) 99-80 ethylene Ethylene / 1-octene copolymer of 1 mol% and 1 to 20 mol% of ethylene, preferably 97 to 85 mol% of ethylene and 3 to 15 mol% of 1/1 octene Octene copolymer, (5) copolymer of ethylene and other ⁇ -olefin
- the laminate of the present invention may be obtained by any manufacturing method.
- the molding method include known molding methods such as a laminate molding method, a coextrusion molding method, a blow molding method, and a co-injection molding method.
- a laminate molding method or a coextrusion molding method is preferable in terms of interlayer adhesion.
- a resin having no active hydrogen in the main molecular skeleton is melted, and through a molten adhesive composition, in a molten state, a coextrusion molding method, a blow molding method It can be manufactured by laminating by a known molding method such as a co-injection molding method.
- a coextrusion molding method there are a T-die method using a flat die and an inflation method using a circular die, and either method can be adopted.
- the flat die may use either a single manifold type using a black box or a multi-manifold type. Any known die can be used as the die used for the inflation method.
- the temperature at which the resin composition containing a resin having no active hydrogen in the main molecular skeleton and the bonding composition is preferably 260 ° C. or higher, more preferably 280 ° C. or higher.
- the upper limit of temperature is not specifically limited, For example, it is 370 degreeC.
- the laminate of the present invention has high interlayer adhesion between the layer (A) and the adhesive layer (B), and is particularly excellent in the interlayer adhesion not only at room temperature but also in a high temperature atmosphere.
- the laminate is excellent in the interlayer adhesion even after being subjected to hot water treatment, and has high hot water resistance.
- the use of the laminate of the present invention is not particularly limited.
- food packaging materials such as food containers and beverage containers
- chemical packaging materials such as cosmetic bottles and shampoo bottles, automobile parts, fuel pipes, gas pipes
- industrial materials such as hot water pipes, ink tubes and liquid transport tubes, and building materials such as decorative sheets.
- a laminate of three types and three layers (A1) / (B) / (C), and (A1) / (B) / (C) / (B) / (A1 ) Or (C) / (B) / (A1) / (B) / (C), which is more preferable, is not limited to these.
- the thickness of the layer (A1) is usually 0.005 to 3 mm, preferably 0.01 to 0.5 mm.
- the thickness of the adhesive layer (B) is usually 0.005 to 3 mm, preferably 0.01 to 0.5 mm.
- the thickness of the layer (C) is usually 0.01 to 100 mm, preferably 0.03 to 2 mm.
- the thickness of the three-layered three-layer structure (A1) / (B) / (C) is usually 0.02 to 106 mm, preferably 0.05 to 3 mm.
- a three-layered three-layer structure (A1) / (B) / (C) can be manufactured by the following molding method.
- a polyketone, an adhesive composition, and other resins other than polyketone such as polyolefin are melted in separate extruders, and then supplied to a three-layer die, and the adhesive composition is used as an intermediate layer. It can be manufactured by extrusion.
- the laminate is a method in which the layer (A1) and the layer (C) are formed in advance, and the adhesive composition is melt-extruded between the layer (A1) and the layer (C) (so-called sandwich lamination method).
- the layer (A1), the layer (B), and the layer (C) can be formed in advance, and the layers can be manufactured by a known laminating method such as a method in which these layers are simultaneously thermocompression bonded (so-called thermal laminating method). .
- the laminate is a so-called co-injection molding in which a polyketone, an adhesive composition, and other resins other than the polyketone such as polyolefin are melted by separate extruders and then injected into the mold simultaneously or at different timings. It can also be manufactured by the method.
- the molding temperature is particularly limited as long as the adhesive composition (carbodiimide-modified polyolefin) and the polyketone are bonded using a known molding method under a high temperature condition, preferably at 260 ° C or higher, more preferably at 280 ° C or higher. It may differ depending on various conditions such as the molding method, molding process, and types of raw materials (resin and composition). Considering the adhesive properties of the adhesive composition and the polyketone and the physical properties of the entire laminate, the molding temperature of the adhesive composition is usually 260 ° C or higher, preferably higher than 260 ° C, more preferably 280 ° C or higher.
- the molding temperature of the polyketone is appropriately determined in consideration of fluidity and various molding conditions at a temperature equal to or higher than the melting point, but is usually 280 ° C. or lower, preferably 260 ° C. or lower. In addition, although the upper limit of these temperatures is not specifically limited, For example, it is 370 degreeC.
- the adhesive composition is described as an adhesive, for example, polar resin / adhesive, adhesive / polar resin / adhesive, polar resin / adhesive / polar Resin, adhesive / polar resin / adhesive / polyolefin, polyolefin / adhesive / polar resin / adhesive / polyolefin.
- the molding temperature is not particularly limited as long as the bonding composition (carbodiimide-modified polyolefin) and the polar resin are bonded using a known molding method under high temperature conditions, and the molding method, molding process, and raw materials (resin and composition). It may be different depending on various conditions such as the type of.
- the molding temperature of the adhesive composition is usually 260 ° C. or higher, preferably 280 ° C. or higher.
- the molding temperature of the polar resin is appropriately determined in consideration of fluidity and various molding conditions at a temperature higher than its melting point.
- MFR Melt flow rate
- Carbodiimide group content The carbodiimide group content in Examples and Comparative Examples was calculated from the charged amount of the carbodiimide group-containing compound.
- the graft amount of maleic anhydride was measured by the following method using FT-IR. A sample was heat-pressed at 250 ° C. for 3 minutes to prepare a sheet, and then an infrared spectrophotometer (manufactured by JASCO Corporation, FT-IR410 type) was used to measure around 1790 cm ⁇ 1 by transmission method. Infrared absorption spectrum was measured. The measurement conditions were a resolution of 2 cm ⁇ 1 and an integration count of 32 times.
- reaction rate (%) is the grafting amount of maleic anhydride measured by FT-IR on the adhesive composition and polyolefin (a) (absorbance derived from maleic anhydride groups in the adhesive composition, polyolefin Using the above formula ( ⁇ 1), the absorbance derived from the maleic anhydride group in (a) was used.
- the obtained laminate was cut to a width of 15 mm, and the adhesive strength at the interface between the PPS layer and the adhesive layer such as the CDI-PP1b layer was measured at room temperature 23 ° C. by the T peel method using the tensile tester. It measured at 80 degreeC and 100 degreeC. Moreover, hot water evaluation was implemented by the method similar to the above.
- the obtained laminate was cut to a width of 15 mm, and the interface between the polycarbonate layer and the CDI-PP1 layer, the MAH-PE layer, or the MAH-PP-2 layer by the T peel method using the tensile tester.
- the adhesive force was measured at room temperature 23 ° C. and 100 ° C.
- hot water evaluation was implemented by the method similar to the above.
- the crosshead speed was 300 mm / min.
- the unit of adhesive strength (interlayer adhesive strength, peel strength) is N / 15 mm.
- HMV-8CA a compound containing carbodiimide group (manufactured by Nisshinbo Chemical Co., Ltd., trade name Carbodilite (registered trademark) HMV-8CA, carbodiimide group equivalent 278, number average molecular weight 2100, number of carbodiimide groups in one molecule 9)
- HMV-15CA carbodiimide group-containing compound (manufactured by Nisshinbo Chemical Co., Ltd., trade name Carbodilite (registered trademark) HMV-15CA, carbodiimide group equivalent 262, number average molecular weight 3050, 12 carbodiimide groups in one molecule)
- the obtained MAH-PP-1 was dissolved in xylene, and then the obtained xylene solution was poured into acetone to reprecipitate and purify the MAH-PP-1.
- the amount of maleic anhydride grafted was measured by FT-IR and found to be 0.7% by weight.
- Example AA1 and Comparative Example AA1 ⁇ Manufacture of adhesive composition> 100 parts of the MAH-PP-1 produced above and 1.7 parts of the carbodiimide group-containing compound HMV-8CA were mixed, and a cylinder temperature of 250 ° C., screw rotation speed of 200 rpm was discharged using a twin-screw kneader. Extrusion was performed at an amount of 80 g / min to produce pellets of the adhesive composition (hereinafter abbreviated as CDI-PP1).
- the obtained CDI-PP1 had an MFR (230 ° C., 2.16 kg load) of 130 g / 10 min and a density of 0.915 g / cm 3.
- the carbodiimide group content calculated from the charged amount of the carbodiimide group-containing compound was It was 6 mmol / 100 g.
- Example AA1 Using a four-kind five-layer T die cast sheet molding machine (manufactured by EDI), by coextrusion molding as Example AA1, PP-2 / CDI-PP1 / polyketone / CDI-PP1 / PP-2, and Comparative Example AA1 A laminate of PP-2 / MAH-PP-2 / polyketone / MAH-PP-2 / PP-2 was prepared. As the polyketone, AKRO-PLASTIC, product name AKROTEK: PK-HM) was used.
- PP-2 layer extruder is 50mm ⁇ and temperature is 230 ° C
- CDI-PP1 or MAH-PP-2 layer extruder is 40mm ⁇ and temperature is 280 ° C
- polyketone layer extruder is 30mm ⁇ and temperature is 260 ° C
- die The temperature of the part was set to 280 ° C. and taken up at 1 m / min.
- Example AA2 and Comparative Example AA2 ⁇ Creating a sheet> Sheets of polyketone (product names AKROTEK: PK-HM), CDI-PP1 and MAH-PP-2 were prepared by the following method using an automatic press molding machine (NSF50, manufactured by Kondo Metal Industry Co., Ltd.).
- NSF50 automatic press molding machine
- Iron plate (3mm) / Aluminum plate (0.2mm) / Polyfluorinated ethylene sheet (0.3mm) / Gold frame (0.5mm) / Polyfluorinated ethylene sheet (0.3mm) / Aluminum plate (0.2mm) / Iron plate (3 mm) were stacked in this order, and pellets of polyketone, CDI-PP1 or MAH-PP-2 were spread inside the metal frame to form a molding unit.
- the molding unit is installed in an automatic press molding machine set at a heating temperature (1), and after heating for a preheating time (2) without pressure, a heating time (3) under a surface pressure of 40 kgf / cm 2 Was heated.
- the molded body is taken out from the automatic press molding machine, transferred to another automatic press molding machine set at a temperature of 27 ° C., and the molding unit is rapidly cooled under a pressure of 40 kgf / cm 2 only for the cooling time (4).
- a 5 mm sheet was prepared.
- the temperature and time conditions for polyketone, CDI-PP1, and MAH-PP-2 are shown below.
- Iron plate (3mm) / Aluminum plate (0.2mm) / Polyfluorinated ethylene sheet (0.3mm) / Gold frame (1.0mm) / Polyfluorinated ethylene sheet (0.3mm) / Aluminum plate (0.2mm) / Iron plate (3 mm) were stacked in this order, and the molding unit was prepared by stacking the polyketone sheet and CDI-PP1 sheet prepared above or the polyketone sheet and MAH-PP-2 sheet inside the metal frame.
- the molding unit was installed in an automatic press molding machine set at 260 ° C., and crimped for 30 seconds under a surface pressure of 40 kgf / cm 2 .
- the molded body was taken out from the automatic press molding machine, transferred to another automatic press molding machine set at a temperature of 27 ° C., and the molding unit was rapidly cooled for 3 minutes under a pressure of 40 kgf / cm 2 to produce a laminate.
- Example AA1 ′ In Example AA1, the temperature of the CDI-PP single layer extruder (40 mm ⁇ ), the temperature of the polyketone layer extruder (30 mm ⁇ ), and the temperature of the die part were changed as shown in Table 3, and a laminate of three types and five layers was produced. did.
- Example BB1 ⁇ Manufacture of adhesive composition> 90 parts of PP-1, 10 parts of MAH-PP-1 produced above, and 1.7 parts of carbodiimide group-containing compound HMV-8CA were mixed, and the cylinder temperature was 250 using a twin-screw kneader. Extrusion was performed at a temperature of 200 ° C., a screw rotational speed of 200 rpm, and a discharge rate of 80 g / min to produce pellets of the adhesive composition (hereinafter abbreviated as CDI-PP1b).
- the obtained CDI-PP1b had an MFR (230 ° C., 2.16 kg load) of 3 g / 10 min and a density of 0.910 g / cm 3 .
- MFR 230 ° C., 2.16 kg load
- a density 0.910 g / cm 3
- CDI-PP1b heating temperature (1): 200 ° C Preheating time (2): 2 minutes Heating time (3): 2 minutes Cooling time (4): 2 minutes PPS: Heating temperature (1): 320 ° C Preheating time (2): 5 minutes Heating time (3): 5 minutes (the surface pressure was changed to 100 kgf / cm 2 ) Cooling time (4): 5 minutes (the surface pressure was changed to 100 kgf / cm 2 ) ⁇ Creation of laminate>
- the CDI-PP1b sheet manufactured above and the PPS sheet are overlapped, and the temperature on the PPS side is set to 300 ° C. and the CDI-PP1b side is measured using a heat sealer (TP-701-A / B manufactured by Tester Sangyo Co., Ltd.).
- the laminate was obtained by heat sealing at a temperature of 150 ° C. and a pressure of 0.05 MPa for 8 seconds.
- Example BB2 to BB3 Comparative Examples BB1 to BB2
- the composition was changed as described in Table 4, and then the production of the sheet and laminate and the evaluation thereof were also carried out in the same manner as in Example BB1. .
- the results are shown in Table 4.
- Example CC1 and Comparative Examples CC1 and CC2 ⁇ Creating a sheet> Using an automatic press molding machine (NSF50, manufactured by Shindo Metal Industries Co., Ltd.), sheets of polycarbonate (LEXAN TM 141R manufactured by SABIC), CDI-PP1, MAH-PE, and MAH-PP-2 were obtained by the following method. Created.
- NSF50 automatic press molding machine
- sheets of polycarbonate LEXAN TM 141R manufactured by SABIC
- CDI-PP1, MAH-PE, and MAH-PP-2 were obtained by the following method. Created.
- Iron plate (3mm) / Aluminum plate (0.2mm) / Polyfluorinated ethylene sheet (0.3mm) / Gold frame (0.5mm) / Polyfluorinated ethylene sheet (0.3mm) / Aluminum plate (0.2mm) / Iron plates (3 mm) were stacked in this order, and a molding unit was prepared by laying pellets of polycarbonate, CDI-PP1, MAH-PE or MAH-PP-2 inside the metal frame.
- the molding unit is installed in an automatic press molding machine set to a heating temperature (1), and after heating for a preheating time (2) without pressure, a heating time (3) under a surface pressure of 40 kgf / cm 2 Was heated.
- a molding unit was created. The molding unit was installed in an automatic press molding machine set at 270 ° C., and pressure-bonded for 120 seconds under a surface pressure of 40 kgf / cm 2 .
- the molded body was taken out from the automatic press molding machine, transferred to another automatic press molding machine set at a temperature of 27 ° C., and the molding unit was rapidly cooled under a pressure of 40 kgf / cm 2 for 3 minutes to produce a laminate.
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Abstract
Description
本発明の積層体は、主要分子骨格に活性水素を持たない樹脂を含む層(A)と、少なくとも一部が前記層(A)に接する、後述する接着用組成物からなる接着層(B)とを有する。その具体例としては、以下の第1の積層体および第2の積層体が挙げられる。
層(A)は、主要分子骨格に活性水素を持たない樹脂を含む。前記樹脂における主要分子骨格とは、分子末端を除く分子部分を意味する。前記樹脂としては、例えば、ポリケトン、およびポリケトン以外の極性樹脂が挙げられる。
第1の積層体において、層(A1)は、ポリケトンを含んでなる。ポリケトンとしては、例えば、カルボニル基(CO)と、エチレン性不飽和化合物から導かれる2価の有機基または当該有機基が2以上連結してなる2価の有機基とが交互に結合している線状重合体が挙げられ、通常、一般式(1)で表される。
第2の積層体において、層(A2)は、極性樹脂を含んでなる。極性樹脂は、好ましくは、接着用組成物に存在するカルボジイミド基との反応性を有する活性水素を持つポリマーであり、例えば、カルボン酸、アミン、アルコール、チオール等に由来する基を持つポリマーである。具体的には、ポリエステル、ポリアミド、ポリカーボネート、アクリル樹脂、ポリフェニレンスルフィド(PPS)、ポリフェニレンオキサイド、ポリエーテルスルフォン(PES)、ポリアセタール等のポリエーテル、エチレン-ビニルアルコール共重合体、アクリロニトリル-ブタジエン-スチレン共重合体(ABS)、更には、ポリオレフィンの変性物やエチレン-アクリル酸共重合体、エチレン-メタクリル酸共重合体、等の活性水素を持つポリオレフィンが挙げられる。なお、ポリエステル、ポリカーボネート、PPS、ポリフェニレンオキサイド、ポリエーテルスルフォン、ポリアセタールなどは分子末端以外に活性水素を有しておらず、主要分子骨格に活性水素を持たない極性樹脂の一例である。極性樹脂は、1種単独で用いても2種以上を用いてもよい。
接着層(B)は、下記特定の接着用組成物を含んでなる。本発明の接着用組成物は、特定のポリオレフィンを含み、前記特定のポリオレフィンは好ましくはカルボジイミド基を有する。前記ポリオレフィンは、カルボジイミド基と反応する基を有するポリオレフィン(a)と、カルボジイミド基含有化合物(b)とが反応したポリオレフィンである。ポリオレフィン(a)と、カルボジイミド基含有化合物(b)は、共に固体であることが好ましい。本発明の接着用組成物は、ポリケトンおよび極性樹脂だけでなく、ポリオレフィンへの接着性も高いので、接着剤として好適である。
カルボジイミド基と反応する基を有するポリオレフィン(a)は、ポリオレフィンに、カルボジイミド基と反応する基を有する化合物(m)を導入することにより得ることができる。ポリオレフィン(a)は、1種単独で用いても2種以上を用いてもよい。
カルボジイミド基と反応する基を有するポリオレフィン(a)は、ポリオレフィン主鎖にカルボジイミド基と反応する基を有する化合物(m)、必要に応じてその他のエチレン性不飽和単量体等を、ラジカル開始剤の存在下でグラフト共重合することによって得ることが可能である。
ポリオレフィン主鎖として用いられるポリオレフィンは、炭素数2~20の脂肪族α-オレフィン、環状オレフィン、非共役ジエンを主成分とする重合体であり、好ましくは炭素数2~10の脂肪族α-オレフィン、更に好ましくは炭素数2~8の脂肪族α-オレフィンを主成分とする重合体である。これらのオレフィンは、1種単独で用いても2種以上を用いてもよい。共重合体の場合、コモノマーとなるオレフィンの含有量は、本発明の効果を奏する限り特に限定されないが、通常50モル%以下であり、好ましくは40モル%以下、更に好ましくは30モル%以下である。このような範囲にあるポリオレフィンの中では、ポリエチレン、ポリプロピレン、ポリブテン-1、ポリ-4-メチルペンテン-1、およびエチレン、プロピレン、ブテン-1または4-メチルペンテン-1とコモノマーとのα-オレフィン共重合体等の結晶性ポリオレフィンが好ましく、ポリエチレン、ポリプロピレンまたはプロピレン-エチレン共重合体がより好ましい。また、これらはアイソタクチック構造、シンジオタクチック構造の両者ともに使用可能であり、立体規則性についても特段の制限はない。
化合物(m)をポリオレフィン主鎖にグラフトさせる方法については特に限定されず、溶液法、溶融混練法等の従来公知のグラフト重合法を採用することができる。
カルボジイミド基と反応する基を有するポリオレフィン(a)は、オレフィンと、カルボジイミド基と反応する基を有する化合物(m)とをラジカル共重合することによって得ることも可能である。オレフィンとしては、上述のポリオレフィン主鎖として用いられるポリオレフィンを形成する場合のオレフィンと同一のものを採用することが可能である。オレフィンと化合物(m)とを共重合させる方法については特に限定されず、従来公知のラジカル共重合法を採用することができる。
カルボジイミド基と反応する基を有するポリオレフィン(a)中におけるカルボジイミド基と反応する基を有する化合物(m)由来の量(例:構造単位量、グラフト量)は、通常は0.05~20重量%、好ましくは0.05~5重量%、さらに好ましくは0.05~3重量%である。カルボジイミド基と反応する基を有する化合物(m)由来の量が、上記範囲であれば、ポリオレフィン(a)とカルボジイミド基含有化合物(b)とが好適に架橋して、接着用組成物を製造することが可能となるため、好ましい。上記範囲を下回ると、接着力が不足する場合がある。
カルボジイミド基含有化合物(b)は、例えば、一般式(2)で示される繰り返し単位を有するポリカルボジイミドである。カルボジイミド基含有化合物(b)は、1種単独で用いても2種以上を用いてもよい。
カルボジイミド基を好ましくは有するポリオレフィンは、カルボジイミド基と反応する基を有するポリオレフィン(a)と、カルボジイミド基含有化合物(b)とを、好ましくは230℃以上にて反応させることにより得られる。前記ポリオレフィンを含む接着用組成物は、具体的には、溶融変性等のように溶融混練することにより得ることが可能であるが、この方法に限定されるものではない。
X=ポリオレフィン(a)中のカルボジイミド基と反応する基に由来する吸光度と、接着用組成物中のカルボジイミド基と反応する基に由来する吸光度との差
Y=ポリオレフィン(a)中のカルボジイミド基と反応する基に由来する吸光度
接着用組成物について上記方法で求めた反応率は、通常40~100%、好ましくは60~100%、更に好ましくは80~100%の範囲にある。
接着用組成物は、ポリオレフィン(a)とカルボジイミド基含有化合物(b)とが反応したポリオレフィンを含むが、本発明の目的を損なわない範囲で、ポリオレフィン(a)およびカルボジイミド基を好ましくは有するポリオレフィンと異なる樹脂を含んでもかまわない。このような樹脂としては、例えば、未変性ポリオレフィンの他、カルボジイミド基と反応する基を有する変性された樹脂が挙げられ、例えば、マレイン酸変性された樹脂、イミン変性された樹脂が挙げられる。また、接着用組成物は、未反応のポリオレフィン(a)を含んでもよい。これらの樹脂は、1種単独で用いても2種以上を用いてもよい。
ポリケトン以外のその他の樹脂を含む層(C)は、層(A1)および接着層(B)以外であり、ポリケトンおよび接着用組成物以外のその他の樹脂を含んでなる。その他の樹脂としては、本発明の効果を奏する限り特に限定されないが、例えば、ポリオレフィン、ポリ乳酸、ポリカーボネート、ポリエステル、ポリアミド、エチレン・ビニルアルコール共重合体が挙げられる。その他の樹脂は、1種単独で用いても2種以上を用いてもよい。なお、ポリケトンとは、層(A1)に用いられるポリケトンを参照できる。
本発明の積層体は,主要分子骨格に活性水素を持たない樹脂を含む層(A)と、少なくとも一部が前記層(A)に接する、接着用組成物からなる接着層(B)とを有し、この要件を満たせばどのような層構成であっても構わない。
本発明の第1の積層体は、ポリケトンを含む層(A1)と、少なくとも一部が前記層(A1)に接する、接着用組成物からなる接着層(B)とを有する。第1の積層体としては、ポリケトン以外のその他の樹脂を含む層(C)、好ましくはポリオレフィン層と、層(A1)とが、接着層(B)を介して積層された積層体であることが好ましく、層の表示を省略すると、(A1)/(B)/(C)の3種3層構造の積層体、および(A1)/(B)/(C)/(B)/(A1)または(C)/(B)/(A1)/(B)/(C)の3種5層構造の積層体がより好ましいが、これらに限定されない。
本発明の第2の積層体は,極性樹脂を含む層(A2)と、少なくとも一部が前記層(A2)に接する、接着用組成物からなる接着層(B)とを有し、具体的には、少なくとも、接着用組成物と極性樹脂とが接着して積層された構造を含む多層の積層体である。この要件を満たせばどのような層構成であっても構わない。
本実施例等においては、以下の方法に従って測定を実施した。
ASTM D1238に従い、230℃、2.16kg荷重の下、測定を実施した。
密度は、JIS K7112に準拠して測定した。
ゲルパーミエーションクロマトグラフィー(GPC)を用い、テトラヒドロフラン溶媒(移動相)とし、カラム温度40℃で測定した(ポリスチレン換算、Mw:重量平均分子量、Mn:数平均分子量)。標準ポリスチレンは、分子量が580≦Mw≦7×106については、アジレント・テクノロジー(株)(旧ポリマーラボラトリーズリミテッド)社製ポリスチレンPS-1を用いた。
実施例および比較例のカルボジイミド基の含有量は、カルボジイミド基含有化合物の仕込み量から算出した。
無水マレイン酸のグラフト量は、FT-IRを用いて次の方法にて測定した。試料を250℃、3分で熱プレスしてシ-トを作製した後に、赤外分光光度計(日本分光(株)社製、FT-IR410型)を用いて透過法で1790cm-1付近の赤外吸収スペクトルを測定した。測定条件は、分解能を2cm-1、積算回数を32回とした。
反応率(%)は、接着用組成物およびポリオレフィン(a)に対してFT-IRにて測定した無水マレイン酸のグラフト量(接着用組成物中の無水マレイン酸基に由来する吸光度と、ポリオレフィン(a)中の無水マレイン酸基に由来する吸光度)を用いて、上記式(α1)により算出した。
得られた積層体を15mm幅に切り取り、引張試験機((株)インテスコ社製IM-20ST型)を使用してTピール法にて、ポリケトン層とCDI-PP1層との界面の接着力、またはポリケトン層とMAH-PP-2層との界面の接着力を、室温23℃、100℃で測定した。さらに、耐熱水性を評価するため、得られた積層体を121℃の熱水中に30分間浸漬後、室温23℃雰囲気下でポリケトン層とCDI-PP1層との界面の接着力、またはポリケトン層とMAH-PP-2層との界面の接着力を測定した。
実施例および比較例において使用した各物質を以下に示す。尚、特に断らない限り、ポリオレフィンとしては、いずれも市販品を使用した。
(2)PP-2:ポリプロピレン(ホモPP、MFR=3g/10分、密度=0.910g/cm3、(株)プライムポリマー社製)
(3)MAH-PP-2:無水マレイン酸変性ポリプロピレン(MFR=6g/10分、密度=0.890g/cm3、無水マレイン酸のグラフト量=0.15重量%、三井化学(株)社製)
(4)HMV-8CA:カルボジイミド基含有化合物(日清紡ケミカル(株)社製、商品名カルボジライト(登録商標)HMV-8CA、カルボジイミド基当量278、数平均分子量2100、1分子中のカルボジイミド基数が9個)
(5)HMV-15CA:カルボジイミド基含有化合物(日清紡ケミカル(株)社製、商品名カルボジライト(登録商標)HMV-15CA、カルボジイミド基当量262、数平均分子量3050、1分子中のカルボジイミド基数が12個)
(6)エチレン-GMA共重合体:エチレン-グリシジルメタクリレート(GMA)共重合体(ARKEMA社製Lotader AX8840、MFR=10g/10分、密度=0.940g/cm3)
(7)MAH-PE:無水マレイン酸変性エチレン・α-オレフィンランダム共重合体(MFR=9.0g/10分、密度=0.900g/cm3、無水マレイン酸グラフト量=0.2%、三井化学(株)社製)
[二軸混練機]
以下の例において、二軸混練機として、(株)日本製鋼所製「TEX-30」(L/D=40、真空ベント使用)を用いた。
<カルボジイミド基と反応する基を有するポリオレフィン(a)の製造>
PP-1を100部に、無水マレイン酸(和光純薬工業(株)社製、以下、MAHと略記)1部、2,5-ジメチル-2,5-ビス(tert-ブチルパーオキシ)ヘキシン-3(日油(株)社製、商品名パーヘキシン(登録商標)25B)0.25部を混合し、二軸混練機を用いてシリンダー温度220℃、スクリュー回転数200rpm、吐出量80g/分にて押し出し、無水マレイン酸変性ポリプロピレン(以下、MAH-PP-1と略記)を得た。MAH-PP-1の密度は0.915g/cm3であった。
<接着用組成物の製造>
上記で製造したMAH-PP-1を100部と、カルボジイミド基含有化合物HMV-8CAを1.7部とをそれぞれ混合し、二軸混練機を用いてシリンダー温度250℃、スクリュー回転数200rpm、吐出量80g/分にて押し出し、接着用組成物のペレット(以下、CDI-PP1と略記)を製造した。
4種5層Tダイキャストシート成形機(EDI社製)を使用し、共押出成形によって実施例AA1としてPP-2/CDI-PP1/ポリケトン/CDI-PP1/PP-2、および比較例AA1としてPP-2/MAH-PP-2/ポリケトン/MAH-PP-2/PP-2の積層体を作成した。ポリケトンとしてはAKRO-PLASTIC社製、製品名AKROTEK:PK-HM)を用いた。PP-2層の押出機は50mmφで温度を230℃、CDI-PP1またはMAH-PP-2層の押出機は40mmφで温度を280℃、ポリケトン層の押出機は30mmφで温度を260℃、ダイス部分の温度を280℃とし、1m/minで引き取った。各層の厚さは、PP-2/CDI-PP1またはMAH-PP-2/ポリケトン/CDI-PP1またはMAH-PP-2/PP-2=350/100/150/100/350(μm)とした。
上記で製造した積層体の層間接着力を評価した。結果を表1に示す。
<シートの作成>
自動プレス成形機((株)神藤金属工業所製、NSF50)を使用し、下記方法によりポリケトン(製品名AKROTEK:PK-HM)、CDI-PP1およびMAH-PP-2それぞれのシートを作成した。
予備加熱時間(2):5分
加熱時間(3):3分
冷却時間(4):3分
・CDI-PP1:加熱温度(1):200℃
予備加熱時間(2):6分
加熱時間(3):4分
冷却時間(4):5分
・MAH-PP-2:加熱温度(1):200℃
予備加熱時間(2):6分
加熱時間(3):4分
冷却時間(4):5分
<積層体の製造>
上記で作成したシートを用いて、自動プレス成形機を使用し、下記方法により実施例AA2としてポリケトンシートとCDI-PP1シートとを、または比較例AA2としてポリケトンシートとMAH-PP-2シートとを貼り合わせて、積層体をそれぞれ製造した。
上記で製造した積層体の層間接着力を評価した。結果を表2に示す。
<接着用組成物の製造>
PP-1を90部と、上記で製造したMAH-PP-1を10部と、カルボジイミド基含有化合物HMV-8CAを1.7部とをそれぞれ混合し、二軸混練機を用いてシリンダー温度250℃、スクリュー回転数200rpm、吐出量80g/分にて押し出し、接着用組成物のペレット(以下、CDI-PP1bと略記)を製造した。
実施例AA2および比較例AA2における<シートの作成>において、金枠(1mm)を使用し、金枠内部にCDI-PP1bまたはPPS(Ticona社製フォートロン(登録商標)FX4382T1)のペレットを敷き詰めて成形ユニットを作成し、温度・時間・加圧条件を以下に示すようにした以外は同様にして、CDI-PP1bおよびPPSそれぞれの厚さ1mmのシートを作成した。
予備加熱時間(2):2分
加熱時間(3):2分
冷却時間(4):2分
・PPS:加熱温度(1):320℃
予備加熱時間(2):5分
加熱時間(3):5分(面圧を100Kgf/cm2に変更した)
冷却時間(4):5分(面圧を100Kgf/cm2に変更した)
<積層体の作成>
上記で製造したCDI-PP1bシートとPPSシートとを重ね、ヒートシール機(テスター産業(株)社製TP-701-A・B)を用いてPPS側の温度を300℃、CDI-PP1b側の温度を150℃、圧力を0.05MPaとして、8秒間ヒートシールすることで、積層体を得た。
上記で製造した積層体の層間接着力を測定した。結果を表4に示す。
実施例BB1の接着用組成物の製造において、表4に記載したとおりに組成を変更したこと以外は同様に行い、続いてシート・積層体の作成およびその評価も実施例BB1と同様に行った。結果を表4に示す。
<シートの作成>
自動プレス成形機((株)神藤金属工業所製、NSF50)を使用し、下記方法によりポリカーボネート(SABIC社製LEXANTM 141R)、CDI-PP1、MAH-PEおよびMAH-PP-2それぞれのシートを作成した。
予備加熱時間(2):5分
加熱時間(3):3分
冷却時間(4):3分
・CDI-PP1:加熱温度(1):200℃
予備加熱時間(2):6分
加熱時間(3):4分
冷却時間(4):5分
・MAH-PE:加熱温度(1):177℃
予備加熱時間(2):6分
加熱時間(3):4分
冷却時間(4):5分
・MAH-PP-2:加熱温度(1):200℃
予備加熱時間(2):6分
加熱時間(3):4分
冷却時間(4):5分
<積層体の製造>
上記で作成したシートを用いて、自動プレス成形機を使用し、下記方法により実施例CC1としてポリカーボネートシートとCDI-PP1シートとを、比較例CC1としてポリカーボネートシートとMAH-PEシートとを、比較例CC2としてポリカーボネートシートとMAH-PP-2シートとを貼り合わせて、積層体をそれぞれ製造した。
上記で製造した積層体の層間接着力を評価した。結果を表5に示す。
Claims (13)
- 主要分子骨格に活性水素を持たない樹脂を含む層(A)と、少なくとも一部が前記層(A)に接する、接着用組成物からなる接着層(B)とを有し、前記接着用組成物が、下記(i)~(iii)の要件を満たす、積層体。
(i)カルボジイミド基と反応する基を有するポリオレフィン(a)と、カルボジイミド基含有化合物(b)との反応物であるポリオレフィンを含む。
(ii)前記接着用組成物100g当たり、カルボジイミド基を0.1~50mmolの量で含む。
(iii)密度が0.870~0.940g/cm3である。 - 前記層(A)が、ポリケトンを含む層(A1)である、請求項1に記載の積層体。
- ポリケトンを含む層(A1)/接着用組成物からなる接着層(B)/ポリケトン以外のその他の樹脂を含む層(C)の構造を含む、請求項2に記載の積層体。
- 前記層(C)が、ポリオレフィンを含む層である、請求項3に記載の積層体。
- 前記層(A1)が、カルボニル基と、エチレン性不飽和化合物から導かれる2価の有機基または当該有機基が2以上連結してなる2価の有機基とが交互に結合している線状重合体を含む層である、請求項2~4のいずれか一項に記載の積層体。
- 前記層(A1)が、エチレン・一酸化炭素共重合体またはエチレン・プロピレン・一酸化炭素共重合体を含む層である、請求項5に記載の積層体。
- 前記層(A)が、極性樹脂を含む層(A2)である、請求項1に記載の積層体。
- 前記層(A2)が、ポリフェニレンスルフィドを含む層である、請求項7に記載の積層体。
- 前記カルボジイミド基含有化合物(b)が、1分子中のカルボジイミド基数が5個以上であるカルボジイミド基含有化合物である、請求項1~8のいずれか一項に記載の積層体。
- 共押出成形、ラミネート成形、ブロー成形または共射出成形してなる、請求項1~9のいずれか一項に記載の積層体。
- 主要分子骨格に活性水素を持たない樹脂を含む層(A)と、少なくとも一部が前記層(A)に接する、接着用組成物からなる接着層(B)とを有する積層体の製造方法であり、
前記製造方法が、前記主要分子骨格に活性水素を持たない樹脂を含む樹脂組成物と前記接着用組成物とを、共押出成形、ラミネート成形、ブロー成形または共射出成形によって接着する工程を含み、
前記接着用組成物が、下記(i)~(iii)の要件を満たす、積層体の製造方法。
(i)カルボジイミド基と反応する基を有するポリオレフィン(a)と、カルボジイミド基含有化合物(b)との反応物であるポリオレフィンを含む。
(ii)前記接着用組成物100g当たり、カルボジイミド基を0.1~50mmolの量で含む。
(iii)密度が0.870~0.940g/cm3である。 - 前記接着の温度が、260℃以上の条件下で行われる、請求項11に記載の積層体の製造方法。
- 下記(i)~(iii)の要件を満たす接着用組成物。
(i)カルボジイミド基と反応する基を有するポリオレフィン(a)と、1分子中のカルボジイミド基数が10個以上であるカルボジイミド基含有化合物(b)との反応物であるポリオレフィンを含む。
(ii)前記接着用組成物100g当たり、カルボジイミド基を0.1~50mmolの量で含む。
(iii)密度が0.870~0.940g/cm3である。
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KR20180072791A (ko) | 2018-06-29 |
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