WO2005066235A1 - 熱硬化性ポリアミド発泡体およびその用途、ならびに熱硬化性ポリアミドの製造方法 - Google Patents
熱硬化性ポリアミド発泡体およびその用途、ならびに熱硬化性ポリアミドの製造方法 Download PDFInfo
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- WO2005066235A1 WO2005066235A1 PCT/JP2005/000067 JP2005000067W WO2005066235A1 WO 2005066235 A1 WO2005066235 A1 WO 2005066235A1 JP 2005000067 W JP2005000067 W JP 2005000067W WO 2005066235 A1 WO2005066235 A1 WO 2005066235A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/166—Catalysts not provided for in the groups C08G18/18 - C08G18/26
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/166—Catalysts not provided for in the groups C08G18/18 - C08G18/26
- C08G18/168—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4263—Polycondensates having carboxylic or carbonic ester groups in the main chain containing carboxylic acid groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0058—≥50 and <150kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2350/00—Acoustic or vibration damping material
Definitions
- thermosetting polyamide foam and use thereof, and method for producing thermosetting polyamide
- the present invention relates to a thermosetting polyamide foam, its use, and a method for producing a thermosetting polyamide. More specifically, a thermosetting polyamide foam obtained by reacting a polyisocyanate conjugate with a polyester polycarboxylic acid, its use, and a method for producing a thermosetting polyamide using a specific catalyst About.
- Representative foams include polyisocyanate conjugates and flexible polyurethane foams obtained from polyether polyols or polyester polyols as starting materials.
- This polyurethane foam is widely used in the world because of its excellent moldability and cushioning property. For example, it is used as a cushion material for automobile seats and sofas.
- these flexible polyurethane foams generally have poor heat resistance, they are not suitable for applications such as high temperature (160 ° C. or higher) heat insulating materials. Therefore, it is difficult to use these foams as a vibration damping material, a sound absorbing material, a cushioning material, etc. around an engine of an internal combustion engine such as an automobile.
- the conventional method in which the reaction between isocyanate and carboxylic acid has a slow reaction rate, is foaming and hardening just by stirring and mixing the raw materials, like a polyurethane foam, and has excellent mold moldability, high heat resistance and high production. It was practically difficult to obtain a polyamide foam having properties.
- an aliphatic polyester polycarboxylic acid obtained from an alicyclic or aliphatic carboxylic acid and an alicyclic or aliphatic alcohol is reacted with an aliphatic and Z or alicyclic diisocyanate
- a foamed polyamide with biodegradability can be obtained by foaming a polyamide at the same time as producing the polyamide (see Patent Document 2 (Japanese Patent Application Laid-Open No. 6-9760)).
- Patent Document 2 Japanese Patent Application Laid-Open No. 6-9760
- Patent Document 1 Japanese Patent Application Laid-Open No. 6-9760
- Patent Document 4 (UK Patent No. 908337) discloses that a polyhydroxy and / or polycarboxylic acid compound is reacted with a polyisocyanate in the presence of a catalyst for forming a perhydrotriazine ring of the isocyanate. Thus, a method for producing a flexible or rigid foam is disclosed.
- Patent Document 5 U.S. Pat. No. 3,609,087 discloses that a polycarboxylic acid derivative and Z or a polycarboxylic anhydride are combined with an organic polyisocyanate and a quaternary amine is combined with an aliphatic alcohol.
- a polyamide-imide foam which has high heat resistance and can be used as a heat-insulating material which can be filled and cured in voids of a building or a pipeline by using the above catalyst.
- Patent Document 6 (French Patent No. 1.289.074) discloses that a polycarboxylic acid and an excess of polyisocyanate can be used to improve the productivity of a polyamide foam using a catalyst such as an alkali metal salt. The techniques obtained are disclosed.
- Patent Literature 2 JP-A-6-9760
- Patent Literature 3 Patent No. 3309980
- Patent Document 2 Japanese Patent Application Laid-Open No. 6-9760
- Patent Document 2 Japanese Patent Application Laid-Open No. 6-9760
- Patent Document 3 Japanese Patent No. 3309980 discloses that a polycarboxylic acid is This is a technique for producing a polyurethane foam using a diacid carbon produced by this reaction as a foaming agent. Even if the time (cream time) is longest and the shortest, it is 34 seconds, and the curing time is 24 hours. Therefore, it is difficult to industrially obtain a polyamide foam using substantially only polycarboxylic acid.
- Patent Document 4 UK Patent No. 908337
- Patent Document 4 is an excellent method for producing a polyamide foam with good productivity. It has been disclosed that depending on the characteristics of the catalyst, it is possible to achieve both mold moldability and heat resistance of the polyamide foam.
- Patent Document 5 US Pat. No. 3,620,087
- Polyester polyestercarbonate and a catalyst used during foam curing It has been disclosed that the characteristics of (1) and (2) make it possible to achieve both mold moldability and heat resistance of the polyamide-imide foam.
- Patent Document 6 (French Patent No. 1.289.074) is also an excellent method for producing a polyamide foam with high productivity. It has been disclosed that the moldability and heat resistance of a polyamide foam can be compatible depending on the characteristics of a catalyst used sometimes.
- Patent document 1 U.S. Pat.No. 4,129,715
- Patent Document 2 JP-A-6-9760
- Patent Document 3 Patent No. 3309980
- Patent Document 4 UK Patent No. 908337
- Patent Document 5 US Patent No. 3620987
- Patent Document 6 French Patent No. 1.289.074
- the present invention provides a thermosetting polyamide foam excellent in heat resistance (pyrolysis properties) and moldability, a method for producing the same, a heat-resistant vibration damping material using the thermosetting lamide foam, It is intended to provide a heat-resistant sound absorbing material and a heat-resistant cushioning material.
- Sarapako is Tatsu
- An object of the present invention is to provide a thermosetting polyamide foam having an excellent shearing property. Means for solving the problem
- the present inventors have conducted intensive studies to solve these problems, and as a result, completed the present invention.
- the polyester polycarboxylic acid preferably has an acid value of 20 mgKOHZg or more and 70 mgKOHZg or less, and a hydroxyl value of 1Z8 or less of the acid value.
- the NCO index is preferably 2.0 or more and 3.0 or less.
- R 1 is independently a hydrocarbon group having 110 carbon atoms, and two R 1 on the same nitrogen atom may be bonded to each other to form a ring structure.
- X indicates the amount of water molecules contained in a molar ratio, and is 0-5.0.
- n is an integer of 18 and represents the number of phosphazem-dum cations
- Z n — is the active hydrogen compound force having a maximum of 8 active hydrogen atoms on an oxygen atom or a nitrogen atom.
- n number of protons in the n-valent active hydrogen compound in the form derived disengaged ⁇ -. is on a, b, c and d all force is a positive integer or zero independently 3 or less at the same time It is not 0.
- Each R 2 is independently a hydrocarbon group having 110 carbon atoms, and two R 2 on the same nitrogen atom may be bonded to each other to form a ring structure.
- Me represents a methyl group.
- a ′, c ′, and d ′ are each independently 0 or 1, but not all 0 at the same time.
- thermosetting polyamide foam according to the present invention is a thermosetting polyamide foam obtained by reacting a polyisocyanate conjugate and a polyesterpolycarboxylic acid, wherein the thermosetting polyamide It is obtained by performing the above reaction using a catalyst that substantially decomposes at the temperature at which the foam is used.
- thermosetting polyamide foam is preferably 130 ° C or higher and lower than the decomposition temperature of the thermosetting polyamide foam.
- thermosetting polyamide foam It is preferable to use a catalyst that substantially decomposes at the use temperature of the thermosetting polyamide foam and a tertiary amine compound catalyst in combination.
- thermosetting polyamide foam it is also preferable to use a catalyst that substantially decomposes at the temperature at which the thermosetting polyamide foam is used, together with an alkali metal salt catalyst of carboxylic acid and an alkaline earth metal salt catalyst of Z or carboxylic acid.
- the amount of the catalyst used in combination with the catalyst that substantially decomposes at the use temperature of the thermosetting polyamide foam is determined by the amount of the catalyst that substantially decomposes at the use temperature of the thermosetting polyamide foam. Preferably it is less than 50% by weight.
- the heat-resistant vibration damping material, heat-resistant sound-absorbing material, and heat-resistant cushioning material according to the present invention have the above thermosetting polyamide foam strength.
- the present invention it is possible to obtain a foam excellent in heat resistance (pyrolysis characteristics) and mold moldability. Further, according to the present invention, even with a soft foam having a low glass transition temperature, a foam having excellent heat resistance (thermal decomposition properties) can be obtained, and a foam having excellent cushioning properties can be obtained.
- the foam according to the invention is effective as a flexible foam.
- thermosetting polyamide foam having excellent heat resistance (pyrolysis properties) and excellent soft foam properties such as cushioning properties can be obtained. It can be applied to the damping material around the engine and around the exhaust pipe of a car. Furthermore, since it has excellent mold moldability, a molded article having a desired shape can be easily produced, and can be widely used as the above-described vibration damping material, sound absorbing material, and cushioning material. Further, the present invention can be widely applied to those having an internal combustion engine such as an airplane or a ship.
- FIG. 1 is a graph showing the results of measuring the heat loss of the thermosetting polyamide foam produced in Example 2 and the polyurethane foam produced in Comparative Example 1.
- the foam according to the present invention is characterized in that a polyisocyanate conjugate and a polyesterpolycarboxylic acid are used as starting materials and are reacted in the presence of a specific catalyst.
- the foam may contain isocyanurate, polyurea, polyimide, and carpoimide to the extent that the properties of the foam are not impaired. Further, an ether bond or a urethane bond may be contained to the extent that heat resistance is not impaired.
- the polyester polycarboxylic acid used as a raw material of the thermosetting polyamide foam according to the present invention can be obtained by dehydrating and condensing a polycarboxylic acid and dalicol by a known method.
- This dehydration condensation reaction can be carried out in an inert gas such as nitrogen gas by a known method such as high-temperature polycondensation or solvent polycondensation in the absence of a solvent.
- the above-mentioned polycarboxylic acid is not particularly limited as long as it has two or more carboxyl groups in the molecule, but usually a polycarboxylic acid having 2 to 12 carbon atoms is used. Among them, those which do not contain an ether bond are more preferable. Specifically, oxalic acid, malonic acid, succinic acid, daltaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, maleic acid, phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, etc. These can be used alone or in combination of two or more.
- the dalicol is not particularly limited as long as it has two or more hydroxyl groups in the molecule, but glycols having usually 11 to 12 carbon atoms can be used, and among them, the viewpoint of heat resistance is also high. Those containing no ether bond are preferred. In order to avoid the use of a solvent or the like in the dehydration-condensation step and to easily carry out dehydration-condensation by a known method, those which are liquid at ordinary temperature and have a boiling point of 185 ° C. or more are preferable.
- the physical properties such as the acid value, hydroxyl value and viscosity of the polyester polycarboxylic acid are not particularly limited when used for obtaining a normal foam, but may be used for obtaining a flexible foam. It is particularly preferable that the acid value is from 20 mgKOHZg to 70 mgKOHZg in view of the reactivity between the isocyanate group and the carboxyl group, moldability and cushioning property.
- those having a hydroxyl value of 1Z8 or less of the acid value are more preferably 1Z9 or less.
- those having a viscosity of 2500 mPa ⁇ s or less at a temperature of 80 ° C. are more preferable, and more preferably 1800 mPa ⁇ s or less.
- the proportion of the polycarboxylic acid and dalicol used is not particularly limited, but in order to obtain the acid value and the hydroxyl value in the above ranges, the carboxyl group of the carboxylic acid is required.
- the molar ratio of the hydroxyl group to the hydroxyl group of the glycol (carboxyl group Z hydroxyl group) is preferably from 1.05 to 1.4, more preferably from 1.1 to 1.4. If the molar ratio is less than the lower limit, the hydroxyl value may not be sufficiently reduced, and the acid value may be too low. On the other hand, if the molar ratio exceeds the upper limit, Reactive acid monomers may remain and cause poor properties.
- the reaction temperature is preferably from 200 ° C to 270 ° C, more preferably from 220 ° C to 250 ° C, from the viewpoint of reactivity.
- a polymerization catalyst may not be used. However, the addition of a polymerization catalyst is preferable in that the reaction proceeds faster.
- the polymerization catalyst used here include a titanium-based catalyst and a tin-based catalyst, specifically, dibutyltin oxide. Power is not limited thereto.
- the amount is preferably 1.0 part by weight or less based on 100 parts by weight of the polyester polycarboxylic acid obtained after the reaction.
- the lower limit of the amount of catalyst added is not particularly limited as long as the catalytic action is exhibited, but is preferably, for example, 0.01 parts by weight.
- the polyisocyanate conjugate used for producing the thermosetting polyamide foam according to the present invention is not particularly limited.
- the polyisocyanate conjugate has 3 to 12 carbon atoms and has at least two isocyanates. Those having a group can be exemplified. Specifically, polymethylene polyphenyl polyisocyanate, 4,4'-diphenyl methane di-isocyanate, 2,4'-diphenyl methane di-isocyanate and a mixture thereof, 2,4-tolylene diisocyanate Cyanates, 2,6-tolylene diisocyanates and mixtures thereof, hexamethylene diisocyanate and the like. Also, a mixture of the tolylene diisocyanate and the polymethylene polyphenyl polyisocyanate can be used.
- polymethylenepolyphenylpolyisocyanate, 4,4, diphenyl -Methylmethane diisocyanate, 2,4, diphenylmethane diisocyanate and mixtures thereof polymethylenepolyphenylpolyisocyanate, 4,4, diphenyl -Methylmethane diisocyanate, 2,4, diphenylmethane diisocyanate and mixtures thereof, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate and mixtures thereof It is preferable to use an aromatic polyisocyanate conjugate.
- the foam according to the present invention is produced by reacting and foaming with a polyester polycarboxylic acid, a polyisocyanate, a foaming catalyst, and if necessary, a foam stabilizer and other components.
- a polyester polycarboxylic acid for example, a polyisocyanate, a foaming catalyst, and if necessary, a foam stabilizer and other components.
- the other components include, for example, water and additives (for example, flame retardants, pigments, ultraviolet rays). Absorbents, antioxidants, etc.).
- additives for example, see “Polyurethane”, No. 8, 134-137, edited by Nobutaka Matsudaira and Tetsuro Maeda, Bookstore (1964)).
- the NCO index is:
- the NCO index is 1.6 or more, the moldability can be increased at a higher rate than the reaction rate between the carboxyl group and the isocyanate group, and a better foam can be obtained.
- a nurate bond can be formed with good tolerance, and a foam having more excellent heat resistance can be obtained.
- the NCO index is preferably 2.0 to 3.0 in view of heat resistance, moldability and cushioning property.
- the NCO index refers to the total number of isocyanate groups in the polyisocyanate as the carboxyl group or hydroxyl group of the polyester polycarboxylic acid, an amino group such as a crosslinking agent, and an isocyanate group such as water. It means the value divided by the total number of active hydrogens that react. For example, if the number of active hydrogens that react with the isocyanate groups and the number of isocyanate groups in the polyisocyanate are stoichiometrically equal, the NCO index is 1.0.
- the polyester polycarboxylic acid and the polyisocyanate are mixed immediately before foaming.
- the other components are preferably mixed in advance with the polyester polycarboxylic acid, if necessary. These mixtures may be used immediately after mixing, or may be stored and used in an appropriate amount. The combination of the other components, the mixing order, the storage time after mixing, and the like can be appropriately determined.
- a mixture of polyesterpolycarboxylic acid and other components that is, polyesterpolycarboxylic acid and foaming catalyst, foam stabilizer, water, and other additives (flame retardant, pigment , An ultraviolet absorber, an antioxidant, etc.) may be referred to as a resin premix.
- These compositions can be appropriately set depending on the desired characteristics of the flexible foam.
- the foam according to the present invention can be obtained by reacting the resin premix thus obtained with polyisocyanate.
- the viscosity of the resin premix is preferably 2500 mPa ⁇ s or less at a temperature of 80 ° C from the viewpoints of mixability in a foaming machine and moldability.
- the method of mixing the polyester polycarboxylic acid and the polyisocyanate may be either dynamic mixing or static mixing, or both may be used in combination.
- a mixing method by dynamic mixing a method of mixing with a stirring blade or the like can be used.
- Examples of the mixing method by static mixing include a method of collision mixing in a machine head mixing chamber of a foaming machine and a method of mixing in a liquid feed pipe using a static mixer or the like.
- the mixing temperature is a force that can be arbitrarily set according to the required quality of the desired foam and the properties of the polyester polycarboxylic acid and the resin premix, and is preferably room temperature or more and 90 ° C or less.
- the pressure at the time of mixing can be arbitrarily set as required according to the required quality of the target foam and the properties of the polyester polycarboxylic acid and the resin premix.
- the temperature required for heat curing can be appropriately selected as long as it does not cause heat shock, but is preferably 120 ° C. or lower.
- the time required for heat curing is preferably 15 minutes or less in practical use.
- foaming can be performed by decarbonation gas generated by the reaction of polyester polycarboxylic acid or water with isocyanate, and this method is preferable.
- Chemical or physical foaming agents may be used (for example, see Nobutaka Matsudaira and Tetsuro Maeda, edited by Polyurethanes, 8th edition, 134-135, Bookstore (1964)).
- this compound when this compound is used, the reactivity between the isocyanate group and the carboxyl group increases, and a thermosetting polyamide can be efficiently produced.As a result, the time required for the heat curing can be reduced to 15 minutes or less, Good mold moldability. At the same time, since a nullate bond is formed, a foam having excellent heat resistance and further excellent flame retardancy can be obtained.
- thermosetting polyamide foam a catalyst that substantially decomposes at the operating temperature of the obtained thermosetting polyamide foam can also be used as the foaming catalyst used for producing the thermosetting polyamide foam.
- the use of a compound having such properties can reduce the thermosetting polyamide foam. Heat resistance (temperature at 10% weight loss) is improved.
- thermosetting polyamide foam is preferably used at a temperature of 130 ° C. or higher and lower than the decomposition temperature of the thermosetting polyamide foam, particularly preferably at 160 ° C. or higher.
- the decomposition temperature of the thermosetting polyamide is about 250 ° C to 300 ° C.
- a compound having a thermal decomposition temperature of room temperature to 200 ° C. as the foaming catalyst.
- the heat resistance (temperature at a 10% weight loss) force S of the thermosetting polyamide foam may decrease.
- the foaming catalyst it is more preferable to use a compound having a thermal decomposition temperature of 180 ° C or lower, most preferably a compound of 160 ° C or lower.
- the amount of such a foaming catalyst to be used is preferably 0.005 to 20 parts by weight, more preferably 0.01 to 10 parts by weight, per 100 parts by weight of the polyester polycarboxylic acid.
- the above-mentioned catalyst which substantially decomposes at the operating temperature of the thermosetting polyamide foam, a tertiary amine compound catalyst, an alkali metal salt catalyst of carboxylic acid, and an alkaline earth of Z or carboxylic acid It is also preferable to use a metal salt catalyst in combination.
- the amount of the catalyst used in combination with the catalyst that substantially decomposes at the use temperature of the thermosetting polyamide foam is the amount of the catalyst that substantially decomposes at the use temperature of the thermosetting polyamide foam. Is preferably less than 50% by weight of the amount used. If the amount of the catalyst used in combination exceeds the above upper limit, the heat resistance (temperature at the time of a 10% weight loss) of the thermosetting polyamide foam may decrease.
- the foam according to the present invention is a catalyst which substantially decomposes the above polyisocyanate conjugate and the polyester polycarboxylic acid at the temperature at which the thermosetting polyamide foam is used, preferably a thermal decomposition temperature.
- R 1 is independently a hydrocarbon group having 110 carbon atoms, and two R 1 on the same nitrogen atom may be bonded to each other to form a ring structure.
- X indicates the amount of water molecules contained in a molar ratio, and is 0-5.0.
- n is an integer of 18 and represents the number of phosphazem-dum cations
- Z n — is the active hydrogen compound power having a maximum of 8 active hydrogen atoms on an oxygen atom or a nitrogen atom.
- An n-valent active hydrogen compound derived from the removal of n protons, a, b, c, and d each independently represent a positive integer of 3 or less, or a force of 0 At 0 Absent.
- R 2 is each independently a hydrocarbon group having 11 to 10 carbon atoms, and two R 2 on the same nitrogen atom may be bonded to each other to form a ring structure.
- Me represents a methyl group.
- a ′,, c ′, and d ′ are each independently 0 or 1, but not all 0 at the same time.
- Examples of the phosphinoxide conjugate represented by the chemical formula (1) include tris [tris (dimethylamino) phosphora-lideneamino] phosphinoxide and tris (tripyrrolidinophosphora-lideneamino) phosphine.
- Oxide, tris (tripiperidinophosphora-ridenamino) phosphinoxide and the like can be mentioned, and preferably tris [tris (dimethylamino) phosphora-lidenamino] phosphine oxide is used.
- Examples of the phosphazenium salt of the active hydrogen compound represented by the chemical formula (2) include dimethylaminotris [tris (dimethylamino) phosphora-redidenamino] phospho-dimethyltetrafluoroborate and tetrakis [tri (pyrrolidine-1-y).
- Examples of the hydroxylated phosphazem-dumamine represented by the chemical formula (3) include tetrakis [tris (dimethylamino) phosphora-redenamino] phospho-dimethylhydroxide, (dimethylamino) tris [tris (dimethylamino) phosphora- Ridenamino] phospho-dimethylhydroxide, and preferably tetrakis [tris (dimethylamino) phosphora-lidenamino] phospho-dimethylhydroxide is used.
- Known ones can be used in combination (see, for example, Nobutaka Matsudaira and Tetsuro Maeda, “Polyurethane”, 8th press, 127-129, Bookstore (1964)).
- aliphatic amines such as triethylenediamine, N, N, ⁇ ', dimethyltetramethylenediamine, bis ( ⁇ , ⁇ -dimethylaminoethylether), and morpholines; Organotin compounds such as tin octanoate / dibutyltin dilaurate; alkali metal salts of carboxylic acids such as cesium acetate, potassium acetate and sodium acetate; polycarboxyls such as cesium salts, potassium salts and sodium salts of polyester polycarboxylic acids Alkali metal salts of acids; alkaline earth metal salts of carboxylic acids such as magnesium acetate, calcium acetate and barium acetate; alkaline earth metals of polycarboxylic acids such as magnesium, calcium and norium salts of polyesterpolycarboxylic acid Metal salts; triethylamine, triethylenediamine, 1,3,5-tris (dimethylaminopropyl)
- the amount of the catalyst is preferably less than 50% by weight of the foaming catalyst which substantially decomposes at the operating temperature of the thermosetting polyamide foam, preferably 100% by weight of polyesterpolycarboxylic acid. 0.005 to 10 parts by weight per part by weight is more preferable.
- the polyisocyanate conjugate and the polycarboxylic acid are particularly limited.
- examples of the polyisocyanate conjugate include naphthalene 1,5 diisocyanate, norbornene diisocyanate, and the like in addition to the above-described polyisocyanate compound.
- polyisocyanate conjugates can be used in combination with monoisocyanates such as phenyl isocyanate and isophorone isocyanate.
- polycarboxylic acid in addition to the above-mentioned polyester polycarboxylic acid and polycarboxylic acid, the same ones can be used, and these can be used in combination with a monocarboxylic acid.
- thermosetting polyamide foam is a method that can be suitably used when producing the foam according to the present invention.
- thermosetting polyamide foam is produced by the above method, the heat resistance can be improved and the mold moldability can be improved by shortening the heat curing time.
- the apparent density of the foam obtained by the present invention can be arbitrarily set according to the required quality of the target foam.
- the apparent density is usually set to 10 kg / m 3 or more and 150 kg / m 3 or less.
- the heat resistance of the foam obtained according to the present invention is in accordance with JIS K7120 “Thermogravimetry of plastics”, the inflow gas is dry air, the inflow gas amount is 200 mlZ, and the heating rate is 10 ° CZ. Thermogravimetry is measured under the conditions, and the weight loss is evaluated based on the mass reduction rate M (%) calculated according to the following equation.
- m is the mass before heating (mg)
- m is the mass (mg) at the temperature after heating t (° C).
- the foam obtained by the present invention has the following excellent heat resistance (pyrolysis properties). The That is, when the mass reduction rate M (%) is 10%, the temperature t is 320 ° C or more, preferably 3 ° C.
- It has a temperature of at least 25 ° C, more preferably at least 330 ° C.
- parts means “parts by weight” unless otherwise specified.
- Polyester resin Defined by the number of mg of potassium hydroxide required to neutralize lg, and the measurement method is described in ISK6901 “Test method for liquid unsaturated polyester resin”, 5.3 The section “Acid value” was followed.
- Hydroxyl value defined by the number of mg of potassium hydroxide required to neutralize acetic acid generated in polyester resin lg in acetyl ester, measurement method is described in ISK6901, Section 5.4 ⁇ Hydroxy group Price ".
- Viscosity In accordance with JIS K6901, Section 5.5.1 ⁇ Brook feed viscometer method '', use Type I, B type viscometer, B8M shown in Table 6 ⁇ Viscometer types and characteristics ''. It was measured.
- m is the mass before heating (mg)
- m is the mass (mg) at the temperature t (° C) after heating.
- M (m—m) / X 100
- m is the mass before heating (mg)
- m is the mass (mg) at the temperature after heating t (° C).
- Isocyanate group content It was measured in accordance with JIS K1603 “Testing method for polymethylene polyphenyl polyisocyanate”, section 5.3 “Isocyanate group content”.
- Polyester polycarboxylic acid A-2 was produced except that the carboxylic acid, glycol, and the type and amount (molar ratio) of the polymerization catalyst shown in Table 1 were used. Table 1 shows the physical property values of the obtained polyester polyacrylonitrile A-2.
- Polyester polyol B-1 was produced in the same manner as in Production Example A-1, except that it was produced using the carboxylic acid, glycol, and polymerization catalyst type and amount (molar ratio) shown in Table 2.
- Table 2 shows the physical property values of the obtained polyester polyol B-1.
- Preparation Example A resin premix was prepared by mixing 100 parts of the polyesterpolycarboxylic acid A-1 obtained in A-1 and 2.6 parts of tris [tris (dimethylamino) phosphora-lidenamino] phosphinoxide as a blowing catalyst. did.
- the resin premix was mixed with the mixed di-
- the methanediisocyanate D-1 was mixed at 80 ° C using a high-pressure foaming machine (manufactured by Gusmer Admiral) so that the NCO index was 2.0, and immediately adjusted to 80 ° C in advance.
- the mixture was discharged and poured into a mold having a size of 400 X 400 X 100 mm at a discharge pressure of 10 to 15 NZcm 2 and a discharge amount of 20 kgZ, and was closed and foamed. After heating and curing in a hot air oven at 100 ° C for 15 minutes, the flexible polyamide foam was removed from the mold. Table 3 shows the physical property values of the obtained flexible polyamide foam.
- Example 2 Same as Example 1 except that foaming was carried out under the conditions shown in Table 3, polyester polycarboxylic acid, polyisocyanate, foam stabilizer, foaming catalyst type and amount (parts), NCO index, mixing temperature, and heat curing conditions. Thus, a flexible polyamide foam was produced. Table 3 shows the physical property values of the obtained flexible polyamide foam.
- Example 1 2 3 4 5 6 Polyester polycarponic acid A-1 A-1 A-1 A-2 A-1 A-1
- Tris Tris (Dime in Lamino) Tris [Tris (dimethylamino) Tris [Tris (Dime in Luamino) Tris [Tris (Dime in Luamino) Tris] [Triy (Dime in J Tris [Tris] Phosphine oxide Phosphine oxide Phosphine age Oxide Phosphine age h + Condition
- Example 2-4 Same as Example 1 except that foaming was carried out under the conditions shown in Table 5, polyester polycarboxylic acid, polyisocyanate, foam stabilizer, foaming catalyst type and amount (parts), NCO index, mixing temperature, and heat curing conditions. Thus, a flexible polyamide foam was obtained. Table 5 shows the physical property values of the obtained flexible polyamide foam.
- Catalytic decomposition temperature Thermobalance measurement (heating rate: 10 ° C / min, atmosphere: air) Temperature at the time of 2% depletion of S (heat resistance, evaluation of heat loss by thermogravimetry)
- FIG. 1 shows a graph of the heat loss of the polyamide foam produced in Example 2 and the polyurethane foam produced in Comparative Example 1, measured in accordance with JIS K7120 “Method for measuring thermogravimetry of plastic”.
- the heat resistance of the flexible polyamide foam was 320 ° C or more when the mass reduction rate in thermogravimetry was 10%, indicating that it was sufficiently superior to the polyurethane foam. Was.
- the present invention can be applied to a vibration damping material "sound absorbing material” cushioning material around an automobile engine and an exhaust pipe. Further, it can be widely provided around an engine of a machine having an internal combustion engine such as an aircraft.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Vibration Prevention Devices (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
Claims
Priority Applications (3)
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JP2005516879A JPWO2005066235A1 (ja) | 2004-01-06 | 2005-01-06 | 熱硬化性ポリアミド発泡体およびその用途、ならびに熱硬化性ポリアミドの製造方法 |
US10/585,352 US20080319095A1 (en) | 2004-01-06 | 2005-01-06 | Thermosetting Polyamide Foam, Uses Thereof, and Method for Producing Thermosetting Polyamide |
EP05703335A EP1702937A1 (en) | 2004-01-06 | 2005-01-06 | Thermosetting polyamide foam and use thereof, and method for producing thermosetting polyamide |
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JP2004-001132 | 2004-01-06 | ||
JP2004001132 | 2004-01-06 | ||
US61641004P | 2004-10-07 | 2004-10-07 | |
US60/616410 | 2004-10-07 |
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WO2005066235A1 true WO2005066235A1 (ja) | 2005-07-21 |
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PCT/JP2005/000067 WO2005066235A1 (ja) | 2004-01-06 | 2005-01-06 | 熱硬化性ポリアミド発泡体およびその用途、ならびに熱硬化性ポリアミドの製造方法 |
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US (1) | US20080319095A1 (ja) |
EP (1) | EP1702937A1 (ja) |
JP (1) | JPWO2005066235A1 (ja) |
KR (1) | KR20070007278A (ja) |
CN (1) | CN1906223A (ja) |
WO (1) | WO2005066235A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008069248A (ja) * | 2006-09-13 | 2008-03-27 | Mitsui Chemicals Polyurethanes Inc | 難燃性ポリアミド発泡体およびその製造方法 |
WO2008041451A1 (ja) * | 2006-10-02 | 2008-04-10 | Mitsui Chemicals Polyurethanes, Inc. | 末端イソシアネート基含有ポリアミド樹脂、アルコキシシラン変性ポリアミド樹脂およびそれらの製造方法、ホットメルト接着剤および樹脂硬化物 |
Families Citing this family (4)
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CN102597115A (zh) * | 2009-10-29 | 2012-07-18 | 日本化药株式会社 | 包含热固性聚酰胺树脂组合物的纤维、无纺布以及它们的制造方法 |
GB201402264D0 (en) * | 2014-02-10 | 2014-03-26 | Wellstream Int Ltd | Composite |
KR20210080488A (ko) * | 2018-10-23 | 2021-06-30 | 바스프 에스이 | 이소시아네이트-폴리아미드 블록 공중합체 |
WO2021032549A1 (en) * | 2019-08-20 | 2021-02-25 | Basf Se | A flame-retardant polyurethane foam having alternative blowing agent with improved processing |
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JPH1160721A (ja) * | 1997-08-19 | 1999-03-05 | Mitsui Chem Inc | ポリオキシアルキレンポリオール、軟質ポリウレタンフォーム及び非発泡ポリウレタンの製造方法 |
JP2002047331A (ja) * | 2000-08-01 | 2002-02-12 | Mitsui Chemicals Inc | 微発泡ポリウレタンエラストマーおよびその製造方法 |
JP2005015521A (ja) * | 2003-06-23 | 2005-01-20 | Bridgestone Corp | 難燃性ポリウレタンフォーム |
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US3620987A (en) * | 1969-11-21 | 1971-11-16 | Upjohn Co | Preparation of polymer foam |
US4139715A (en) * | 1977-07-01 | 1979-02-13 | Sun Oil Company Of Pennsylvania | Catalytic codimerization of norbornadiene with an acrylic acid ester |
ES2119886T3 (es) * | 1992-01-31 | 1998-10-16 | Henkel Kgaa | Procedimiento para la obtencion de materiales sinteticos con grupos amido. |
GB9226868D0 (en) * | 1992-12-23 | 1993-02-17 | Ici Plc | Polyol compositions |
DE4428520C2 (de) * | 1994-08-11 | 1998-09-17 | Inventa Ag | Schwingungsdämpfendes Bau- oder Funktionselement |
JP3497054B2 (ja) * | 1996-02-20 | 2004-02-16 | 三井化学株式会社 | ホスファゼニウム塩およびその製造方法ならびにポリアルキレンオキシドの製造方法 |
US5990352A (en) * | 1996-02-20 | 1999-11-23 | Mitsui Chemicals, Inc. | Phosphazenium salt and preparation process thereof, and process for producing poly(alkylene oxide) |
TWI262930B (en) * | 1999-02-10 | 2006-10-01 | Mitsui Chemicals Inc | High-durability flexible polyurethane cold molded foam and process for producing the same |
FR2841253B1 (fr) * | 2002-06-21 | 2004-10-22 | Rhodia Polyamide Intermediates | Composition polyamide expansible et mousse polyamide obtenue a partir de cette composition |
-
2005
- 2005-01-06 EP EP05703335A patent/EP1702937A1/en not_active Withdrawn
- 2005-01-06 WO PCT/JP2005/000067 patent/WO2005066235A1/ja active Application Filing
- 2005-01-06 CN CNA2005800019524A patent/CN1906223A/zh active Pending
- 2005-01-06 JP JP2005516879A patent/JPWO2005066235A1/ja active Pending
- 2005-01-06 US US10/585,352 patent/US20080319095A1/en not_active Abandoned
- 2005-01-06 KR KR1020067015774A patent/KR20070007278A/ko not_active Application Discontinuation
Patent Citations (3)
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JPH1160721A (ja) * | 1997-08-19 | 1999-03-05 | Mitsui Chem Inc | ポリオキシアルキレンポリオール、軟質ポリウレタンフォーム及び非発泡ポリウレタンの製造方法 |
JP2002047331A (ja) * | 2000-08-01 | 2002-02-12 | Mitsui Chemicals Inc | 微発泡ポリウレタンエラストマーおよびその製造方法 |
JP2005015521A (ja) * | 2003-06-23 | 2005-01-20 | Bridgestone Corp | 難燃性ポリウレタンフォーム |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008069248A (ja) * | 2006-09-13 | 2008-03-27 | Mitsui Chemicals Polyurethanes Inc | 難燃性ポリアミド発泡体およびその製造方法 |
WO2008041451A1 (ja) * | 2006-10-02 | 2008-04-10 | Mitsui Chemicals Polyurethanes, Inc. | 末端イソシアネート基含有ポリアミド樹脂、アルコキシシラン変性ポリアミド樹脂およびそれらの製造方法、ホットメルト接着剤および樹脂硬化物 |
JP5507845B2 (ja) * | 2006-10-02 | 2014-05-28 | 三井化学株式会社 | 末端イソシアネート基含有ポリアミド樹脂の製造方法、アルコキシシラン変性ポリアミド樹脂およびその製造方法 |
Also Published As
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US20080319095A1 (en) | 2008-12-25 |
KR20070007278A (ko) | 2007-01-15 |
CN1906223A (zh) | 2007-01-31 |
JPWO2005066235A1 (ja) | 2007-12-20 |
EP1702937A1 (en) | 2006-09-20 |
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