JPH0826114B2 - Method for producing polymer foam - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a polymer foam, and more particularly to a method for water-foaming a polymer foam.

When manufacturing a polymer foam that is used very much for heat insulating materials, cushioning materials, packaging materials, etc., a hydroxyl group-containing quaternary ammonium salt compound is used as an essential component for the purpose of adjusting foaming characteristics and reaction characteristics, Furthermore, as a modified organic polyisocyanate, (A) an alkoxypolyalkylene glycol and (B) a polyoxyalkylene-added higher aliphatic amine derivative are optionally modified with (C) an alkylene polyol having two or more active hydrogen groups. It is characterized by using an organic polyisocyanate prepolymer, and as a manufacturing method, a process in which the organic polyisocyanate prepolymer is mixed with water in advance and made into a foaming water emulsion, and then other necessary components are added A wide range of foamed trees from soft type to hard type characterized by having Range to a method of manufacturing polymeric foam that can encompass.

[Conventional technology]

It has been a known fact that water is used as a foaming agent when preparing a polyurethane foam regardless of whether it is hard or soft.

However, it is also known that chlorofluorocarbons and / or low-boiling solvents are not used at all, or problems in physical properties and molding as a polyurethane foam occur due to a considerable reduction of the addition amount. It is a fact.

For example, in a rigid polyurethane foam, it is fatal to be often used as a heat insulating material, resulting in a decrease in heat insulation performance due to a decrease in closed cells, and a decrease in liquid flowability due to an increase in viscosity of a stock solution.
Occurrence of scorch at the time of manufacturing a thick panel etc. due to temperature rise inside the foam, deterioration of flame retardance, etc. are considered.In soft polyurethane foam, increase in compression strain rate, foam density and hardness There is a demand for improvement because of difficulty in balance adjustment, deterioration of liquid flowability due to increase of viscosity of stock solution similar to hard system, decrease of reaction control width, scorch, and the like.

[Problems to be Solved by the Invention]

The present invention is a foam produced by water-foaming when a polymer foam is obtained by using water as a foaming agent from the reaction of an active hydrogen compound, a mixture of additives if necessary, and a modified organic polyisocyanate. As a result of diligent study on a method for suppressing the adverse effects on the physical properties and moldability of the organic polyisocyanate, the organic polyisocyanate is provided with both self-emulsifying property and water-foaming property, and one kind of active hydrogen compound. It was found that the use of a hydroxyl group-containing quaternary ammonium salt compound as a compound can cover a wide range of foaming resins from hard to soft, and can provide a stable polymer foam, thus completing the present invention. Came to do.

[Means for solving the problem]

That is, the present invention provides a polymer-containing foam obtained by reacting a mixture of an active hydrogen compound and, if necessary, an additive with a modified organic polyisocyanate.
Using a primary ammonium salt compound as an essential component, water as a foaming agent, an organic polyisocyanate modified product, (A) an alkoxypolyalkylene glycol having an average molecular weight of 250 to 4000 and (B) Polyoxyalkylene-added higher aliphatic amine derivative, organic polyisocyanate having an isocyanate content in the range of 5 to 40% by weight, which is obtained by the reaction with (C) an alkylene polyol having two or more active hydrogen groups. A method for producing a polymer foam, which comprises reacting using a prepolymer, comprising: R ₁ : a straight-chain or branched alkyl group or alkenyl group having 1 to 40 carbon atoms (however, the alkyl group or alkenyl group includes those having an ether bond in the carbon chain), phenyl group or benzyl group R ₄ R ₂ , R ₃ : (CH ₂ CHO) yH (where y is 1 to 40), or a linear or branched alkyl group or alkenyl group having 1 to 40 carbon atoms (however, the alkyl group, or Alkenyl groups include those having an ether bond in the carbon number), phenyl groups and benzyl groups, and R ₂ and R ₃ may be the same or different.

R ₄ : hydrogen or a linear or branched alkyl group, alkenyl group, phenyl group, benzyl group or halogenated alkyl group having 1 to 10 carbon atoms X: 1 to 40 In addition, halogen salts, acetates and sulfates are also included R ₅ , R ₆ : hydrogen or a linear or branched alkyl group or alkenyl group having 1 to 10 carbon atoms (provided that the alkyl group or alkenyl group is Include those having an ether bond in the carbon number), a phenyl group and a benzyl group, and R ₅
And R ₆ may be the same or different.

In addition, the alkylene polyols and / or the average molecular weight having two or more active hydrogen groups within the range of 80/20 to 0/100 in the molar addition polymerization ratio of ethylene oxide and alkylene oxide having 3 or more carbon atoms as the active hydrogen compound. Is 250
A method for producing a polymer foam characterized by using the above polyamines.

The production of the polymer foam according to the present invention is carried out by using two active hydrogen groups as active hydrogen compounds within a molar addition polymerization ratio of ethylene oxide and alkylene oxide having 3 or more carbon atoms in the range of 80/20 to 0/100. Alkylene polyols having the above and / or polyamines having an average molecular weight of 250 or more are used, and a hydrogen group-containing quaternary ammonium salt compound is used as at least one kind of active hydrogen compound, and organic polyisocyanate is modified. As a body, an organic polyisocyanate and an organic polyisocyanate containing two or more isocyanate groups in the molecule, and (A) an average molecular weight of 250
To 4000-alkoxy polyalkylene glycol and (B) polyoxyalkylene-added higher aliphatic amine derivative, and (C) if necessary, isocyanate content obtained by reaction with alkylene polyol having two or more active hydrogen groups. Is used in the range of 5 to 40% by weight, and the production method is such that the organic polyisocyanate prepolymer and water as the sole blowing agent are forcibly mixed in advance to form a foamable water emulsion. , And other necessary components are added, and the reaction is foamed.

Such a polymer foam can cover a wide range from hard type to soft type and is a stable foamed resin.

The (C) alkylene polyol having two or more active hydrogen groups used as an active hydrogen compound in the present invention can be obtained by reacting a polyol with a specific alkylene oxide. Examples of the polyol include ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propylene glycol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, glycerin, diglycerin,
Examples thereof include compounds having at least two active hydrogen atoms such as sorbitol, pentaerythritol, sucrose bisphenol A, ethylenediamine, tolylenediamine and triethanolamine. These can be used alone or as a mixture of two or more kinds. Using the polyol as an initiator, ethylene oxide and an alkylene oxide having 3 or more carbon atoms are added at a molar addition polymerization ratio of 80/20 to 0.
It is obtained by addition polymerization by a known method within the range of / 100. Suitable polyamines having an average molecular weight of 750 or more which can be similarly used as the active hydrogen compound are those produced by amination of the above-mentioned polyether polyol. In order to be used in the present invention, it is not always necessary that the amination of the polyether polyol is completed, and a partially amination product of the above polyether polyol can also be used.

The quaternary ammonium compound having a hydroxyl group as an essential component used as the active hydrogen compound of the present invention has the general formula Indicated by.

R ₁ : a linear or branched alkyl group or alkenyl group having 1 to 40 carbon atoms (however, the alkyl group or alkenyl group includes those having an ether bond in the carbon chain), a phenyl group or Benzyl group (However, y is 1 to 40), or a linear or branched alkyl group or alkenyl group having 1 to 40 carbon atoms (however, the alkyl group or alkenyl group includes those having an ether bond in the number of carbon atoms) Selected from among phenyl group and benzyl group, R ₂ and R ₃ may be the same or different.

R ₄ : hydrogen or a linear or branched alkyl group having 1 to 10 carbon atoms, an alkenyl group, a phenyl group, a benzyl group or a halogenated alkyl group X: 1 to 40 In addition, halogen salts, acetates and sulfates are also included.

R _5, R _6: a straight-chain having 1 to 10 hydrogen or carbon atoms or, branched alkyl group or alkenyl group (provided that the alkyl group or the alkenyl group include those having an ether bond in the carbon number) , A phenyl group and a benzyl group,
R ₅ and R ₆ may be the same or different.

Examples of these quaternary ammonium salt compounds include Armor T / 13, Armor T / 13P, Armor MA / 1
3, Armor DMA / 12 (all made by Lion) and the like. These hydroxyl group-containing quaternary ammonium salt compounds are used alone or as a mixture of two or more kinds. The addition amount can be used within the range of 0.01 to 20 parts by weight based on 100 parts by weight of the modified organic polyisocyanate used, and is appropriately adjusted depending on the reaction activity of the active hydrogen compound, the type of catalyst used, the addition amount, etc. As a result, it is possible to change the reaction characteristics, foaming characteristics and the like in a wide range. As an addition method, it is generally mixed in advance with another active hydrogen compound, but since it is a water-soluble compound, water as a foaming agent mixed with the organic polyisocyanate resin is taken into consideration in consideration of the production process. It is also possible to mix them in advance.

The following can be used as the additive that can be used in the present invention. For example, a catalyst, a foam stabilizer, and optionally a flame retardant, a pigment, a stabilizer, a foaming agent and the like can be mentioned.

As the catalyst, tertiary amines such as dimethylethanolamine, triethylenediamine, tetramethylpropanediamine, tetramethylhexamethylenediamine, dimethylcyclohexylamine, stannas octoate,
Organotin compounds such as dibutyltin dilaurate may be mentioned.

Examples of the foam stabilizer include various siloxane / polyalkylene oxide block copolymers, and the selection of the type is determined depending on whether a hard foam or a soft foam is obtained.

As flame retardants, trischloroethyl phosphate,
Examples thereof include trischloropropyl phosphate, tricrudyl phosphate, and chlorinated paraffin.

Examples of the foaming agent include chlorofluorocarbons and low boiling point solvents, but it is preferable not to use them in view of the characteristics of the present invention. However, when it is unavoidable to use it for adjusting the viscosity of the stock solution and adjusting the density of the foam, it is preferable to keep the amount to the minimum.

The (A) alkoxypolyalkylene glycol constituting the modified organic polyisocyanate used in the present invention has an average molecular weight in the range of 250 to 4000, particularly preferably in the range of 600 to 2000. The organic polyisocyanate modified with this alkoxypolyalkylene glycol forms a polyurea protective coating on the surface of the prepolymer particles after dispersion in water, and keeps the reaction between the isocyanate groups of the prepolymer and water self-emulsifying. It has the characteristics of It is considered that this has the effect of preventing the generation of scorch due to internal heat generation in water bubbling.

The general formula of such an alkoxy polyalkylene glycol is represented by R ₁ OR ₂ O _n H, where R ₁ and R ₂ are an alkyl group or an alkylene group, and the entire alkoxy group is a nonionic surfactant. It is considered that it exerts the characteristic of self-emulsifying property because it acts as an artificial. The water-emulsifiable average molecular weight is 250 or more, but when the average molecular weight is 4000 or more, the water-emulsifying property is good, but the stability in water becomes poor, and at the same time, the compound having an average molecular weight of 4000 or more has crystallinity. Due to the high temperature, the storage stability of the obtained prepolymer at low temperature is lowered. The residual isocyanate content of the obtained self-emulsifying prepolymer is preferably adjusted to 25 to 45 weight percent.

The resulting self-emulsifying prepolymer is modified with (B) a polyoxyalkylene-added higher aliphatic amine derivative in order to impart further water-foaming characteristics.

The (B) polyoxyalkylene addition higher dendritic aliphatic amine derivative used in the present invention has the general formula R: a linear or branched alkyl group or hydroalkyl group having an average carbon number of 8 to 40 (however, alkenyl group, hydroxyalkenyl group, phenyl group, benzyl group, and those having an ether bond in the carbon chain are also included) R ₁ : hydrogen or a methyl group (however, hydrogen and a methyl group may be introduced in a random or block form) R ₂ : a linear or branched alkyl group or hydroxyalkyl group having an average carbon number of 7 to 39 (However, alkenyl groups, hydroxyalkenyl groups, phenyl groups, benzyl groups, and those having an ether bond in the carbon chain are also included.) X ₁ , x ₂ , y ₁ , y ₂ , y ₃ , z ₁ , z ₂ : An integer of 1 to 60: n: 2 or an integer of 3.

Examples of the polyoxyalkylene-added higher aliphatic amine derivative include, for example, Esomin B / 25, B / 60, Esomin
T / 25, T / 60, Esomin T / 13, T / 60, Esomede HT / 60
(All made by Lion) and the like.

The residual isocyanate content of the prepolymer thus obtained, which is provided with both the self-emulsifying property and the water-foaming property, is preferably adjusted to 20 to 40% by weight. Further, this prepolymer is generally further modified with an alkylene polyol having two or more active hydrogen groups depending on the stability of foam formation during water foaming, the reaction characteristics, the type of the desired foam and the like. However, it is not always an essential condition.

The alkylene polyols having two or more active hydrogen groups (C) used for this modification are those having a molar addition polymerization ratio of ethylene oxide and alkylene oxide having 3 or more carbon atoms in the range of 100/0 to 30/60. preferable. In the water foaming of the present invention, the organic polyisocyanate and / or the modified isocyanate is forcibly stirred in advance with water to form a water emulsion, and for that purpose, an alkylene polyol used for the modification of the organic polyisocyanate. The classes are preferably hydrophilic. The above-mentioned polyols can be used as the initiator of the alkylene polyols.

The residual isocyanate content of the final modified organic polyisocyanate thus obtained is preferably adjusted to 5 to 40% by weight.

Examples of the organic polyisocyanate containing two or more isocyanate groups in the molecule serving as the skeleton of the modified organic polyisocyanate of the present invention include tetramethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate and 4,4′-methylenebis ( Cyclohexyl isocyanate), xylylene diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, polyphenylmethane polyisocyanate, etc., and as these isocyanate derivatives, Coronate L, Coronate HL, Coronate EH, Millionate MTL (all are Nippon Polyurethane Industry Co., Ltd. Etc.) and these similar compounds. These can be used alone or as a mixture of two or more kinds.

When the organic polyisocyanate modified product of the present invention and water are forcibly stirred, an additive can be added for the purpose of adjusting the density and hardness of the foam, adjusting the reactivity, and the like. For example, mica powder, fine powder clay, silica gel, gypsum,
Examples thereof include calcium carbonate, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, sodium silicate, silica sand, pearlite, shirasu balloon, glass balloon, glass fiber, rock wool, asbestos fiber and the like.

The most characteristic of the present invention lies in its manufacturing method. The organic polyisocyanate modified product having self-emulsifying property and water-foaming property and water as a foaming agent are forcibly mixed in advance to form a foaming water emulsion, and then an active hydrogen compound and / or a mixture of additives is added, and further, The reaction is foamed by mixing with stirring. At this time, depending on the selected raw material composition, it is possible to obtain a polymer foam having a wide range of resin from soft to hard and from high density to low density.

〔The invention's effect〕

In the production of the polymer foam of the present invention, an organic polyisocyanate is modified with an alkoxypolyalkylene glycol and a polyoxyalkylene-added higher aliphatic amine derivative, if necessary with alkylene polyols, to obtain both self-emulsifying property and water-foaming property. By imparting the property, when it is forcibly mixed with water, emulsion particles having extremely fine polyurea protective film are formed to form a shaving cream-like aqueous dispersion. The emulsion particles grow to form a foam, but the foam obtained here tends to be brittle and brittle in general. Therefore, after forming the aqueous dispersion, adjustment of reaction characteristics, foaming stability,
Adopting an active hydrogen compound for the purpose of selecting the type of foam desired and / or a quaternary ammonium salt compound containing an active hydrogen group as an essential component thereof, and adding and mixing other additives as necessary. It is possible to obtain a highly stabilized polymer foam.

Furthermore, by adopting the production method of the present invention, scorch generation due to internal heat generation of the foam, decrease in liquid flowability due to increase in viscosity of the stock solution, decrease in reaction control width, and other drawbacks easily caused by water foaming are caused by chlorofluorocarbons and It has become possible to solve the problem without using a low boiling point solvent.

〔Example〕

Hereinafter, examples of the present invention will be described in detail, but the present invention is not limited to these examples. Unless otherwise specified, parts and% in the examples indicate "parts by weight" and "% by weight", respectively. In the examples, the polyoxyalkylene-added higher aliphatic amine derivative is abbreviated as amine derivative polyol, and the active hydrogen group-containing quaternary ammonium salt compound is abbreviated as quaternary ammonium salt compound.

Example 1 Polyphenylmethane polyisocyanate (Nippon Polyurethane, Millionate MR-200, NCO content 30.9%) 970
Parts and methoxy polyethylene glycol with an average molecular weight of 700 (MPG-081 manufactured by Nippon Emulsifier) and amine derivative polyol (equivalent to general formula (2) manufactured by Lion, Esomin B / 2
5, OHV145) and 157 parts were reacted at 70 ° C. for 2 hours to obtain a self-emulsifying water-foaming organic polyisocyanate resin. The NCO content of this resin was 23.6%. For 100 parts of this resin,
5 of quaternary ammonium salt compound (equivalent to borate ester salt made by Lion, Armor T / 13, OHV560)
% Aqueous solution was added and forcibly mixed to obtain a shaving cream-like aqueous emulsion. For this emulsion liquid, polyalkylene triol (made by Asahi Denka,
G-300, OHV520) 50 parts were added and further mixed with stirring,
Without using catalysts, silicone type foam stabilizers, etc.
A hard foam having a uniform cell structure was obtained. The generation of scorch inside the foam could not be confirmed.

Rise time (sec): 96 Foam density (Kg / m ³ ): 23.8 Compressive strength (Kg / cm ² ): Foaming direction 1.2 Dimensional change rate (%): 80 ° C x 24 hours 0.1 (Thickness change rate) − 20 ° C. × 24 hours 0 (〃) Example 2 To 100 parts of the same organic polyisocyanate resin as in Example 1, quaternary ammonium salt compound (equivalent to borate ester salt, manufactured by Lion, Armor MA / EP21, O)
When 20 parts of a 5% aqueous solution of HV1100) was added and forcibly mixed, a shaving cream-like aqueous emulsion was obtained.
To this emulsion solution, 50 parts of polyalkylene octanol (SC-1000, OHV450 manufactured by Asahi Denka Co., Ltd.) was added, and the mixture was further stirred and mixed to obtain a uniform cell without using catalysts, silicone type foam stabilizers, etc. A low-density rigid foam with a structure was obtained. The generation of scorch inside the foam could not be confirmed.

Rise time (sec): 108 Foam density (Kg / m ³ ): 14.2 Compressive strength (Kg / cm ² ): Foaming direction 0.72 Dimensional change rate (%): 80 ° C x 24 hours 0 (Thickness change rate) − 20 ° C. × 24 hours 0 (〃) Example 3 Polyphenylmethane polyisocyanate (Nippon Polyurethane, Coronate 1104, NCO content 31.5%) 975 parts and Methoxypolyethylene glycol having an average molecular weight of 1480 (Nippon Emulsifier, MPG-038) 25 Part, amine derivative polyol (equivalent to general formula (2) made by Lion, Esomin B / 60, OHV4
6) Reaction of 99.5 parts and polyalkylene diol (CM294, OHV39, manufactured by Asahi Denka Co., Ltd.) having an average molecular weight of 2900 obtained by randomly addition-polymerizing 40 parts of ethylene oxide and 60 parts of propylene oxide to ethylene glycol at 70 ° C for 2 hours. Thus, a self-emulsifying water-foamable organic polyisocyanate resin was obtained. The NCO content of this resin was 14.8%. This resin 1
When 30 parts of water was added to 00 parts and forcedly mixed, a shaving cream-like aqueous emulsion was obtained. 50 parts of a mixture of 100 parts of polyalkylene triol (manufactured by Sanyo Kasei, FA703, OHV33) and 8 parts of quaternary ammonium salt compound (equivalent to borate ester salt, manufactured by Lion, Armor T / 13, OHV420) with respect to this emulsion liquid. After adding and stirring and mixing, a low density soft foam having a uniform cell structure was obtained without using catalysts, silicone foam stabilizers and the like. The generation of scorch inside the foam could not be confirmed.

Rise time (sec): 124 Foam density (Kg / m ³ ): 20.5 Mold molding (300 x 300 x 500 mm) Foam density (Kg / m ³ ): 34.8 Elongation (%): 90 (Elongation rate) Compression permanent Strain (%): 50% Normal state 7.4 (thickness change rate) Example 4 Liquid diphenylmethane diisocyanate (manufactured by Nippon Polyurethane, Millionate MTL, NCO content 29.1%) 973 parts and M
PG-08 127 parts and 132 parts of amine derivative polyol (corresponding to general formula (4), esomide HT / 60) were reacted at 70 ° C. for 2 hours to obtain a self-emulsifying water-foamable organic polyisocyanate resin. The NCO content was 23.5%. When 20 parts of water was added to 100 parts of this resin and forcedly mixed, a shaving cream-like aqueous emulsion was obtained. To this emulsion liquid, 100 parts of polyoxyalkylene triamine (Texaco Chemical Co., Jeffamine T-5000, total amine 0.46 Meg / g), 2 parts of Armor T / 13 and silicone type foam stabilizer (Toray Silicone, SRX −274
C) When 65 parts of 1 part of the mixture was further stirred, foaming immediately started, and resinification was completed in an extremely short time. The obtained foam was extremely elastic. The generation of scorch inside the foam could not be confirmed.

Rise time (sec): 6 Foam density (Kg / m ³ ): 38 Hand foaming was difficult to mold, so it was not used for physical property measurement.

Example 5 Isocyanurate ring-containing hexamethylene diisocyanate polymer (Nippon Polyurethane, Coronate EH, NCO
Content 21.3%) 980 parts and MPG-081 20 parts and amine derivative polyol (corresponding to general formula (2), Esodumiomine B / 60
69 parts were reacted at 70 ° C. for 3 hours to obtain a self-emulsifying water-foamable organic polyisocyanate resin. The NCO content was 16.8%. When 15 parts of water was added to 100 parts of this resin and forcedly mixed, a shaving cream-like aqueous emulsion was obtained. To this emulsion liquid, polyalkylene triol (Asahi Glass, Exenol 3030, OHV56) 6
50 parts of a mixture of 2 parts, 10 parts of Armor T / 13, 5 parts of chlorinated paraffin (Ajinomoto, Enpara K-45) and 1.1 parts of triethylenediamine (Tosoh, TEDAL-33) was added and further stirred. A very light-colored soft foam having a uniform cell structure was obtained. The generation of scorch inside the foam could not be confirmed.

Rise time (sec): 108 Foam density (Kg / m ³ ): 30.5 Mold molding (300 x 300 x 50 mm) Foam density (Kg / m ³ ): 43.6 Elongation (%): 87 (Elongation rate) Compression permanent Strain (%): 50% Normal state 5.6 (thickness change rate) Comparative Example 1 A resin was prepared by removing MPG-081 which is a modifier of the organic polyisocyanate resin in Example 1. NCO of this resin
The content was 25.1%. To 100 parts of this resin, 10 parts of the same aqueous solution as in Example 1 was added and forcibly mixed, no aqueous emulsion was obtained, and when left for several seconds, two layers were separated. Therefore, 50 parts of G-300 used in Example 1 was added to this liquid while stirring and further mixed by stirring to obtain a hard foam having an extremely rough and non-uniform cell structure. The inside of the foam had turned brown.

Comparative Example 2 To 100 parts of the same organic polyisocyanate resin as in Example 1, 10 parts of water in which Armor T / 13 was not dissolved was added and forcedly mixed to obtain a shaving cream-like aqueous emulsion. For this emulsion liquid, G
When 50 parts of -300 was added and further mixed, foaming was started.
The foam slumped to a height of about 60% just before the rise of the foam was completed. The cell structure was extremely rough, non-uniform, and a practical foam could not be obtained.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location (C08G 18/48 101: 00) C08L 75:08

Claims (2)

[Claims] 1. When obtaining a polymer foam from a reaction of an active hydrogen compound, optionally a mixture of additives, and a modified organic polyisocyanate, a hydroxyl group-containing fourth group of the general formula (1) is used as an active hydrogen compound. Using a primary ammonium salt compound as an essential component, water as a foaming agent, an organic polyisocyanate modified product, (A) an alkoxypolyalkylene glycol having an average molecular weight of 250 to 4000 and (B) A polyoxyalkylene-added higher aliphatic amine derivative, optionally having an isocyanate content of 5 obtained by reaction with (C) an alkylene polyol having two or more active hydrogen groups.
A method for producing a polymeric foam, characterized in that the reaction is carried out using an organic polyisocyanate prepolymer in the range of ˜40 weight percent. General formula (1) R ₁ : a straight-chain or branched alkyl group or alkenyl group having 1 to 40 carbon atoms (however, the alkyl group or alkenyl group includes those having an ether bond in the carbon chain), phenyl group or benzyl group (Provided that y is 1 to 40), or a linear or branched alkyl group or alkenyl group having 1 to 40 carbon atoms (provided that the alkyl group or alkenyl group has an ether bond in the carbon chain) Included), a phenyl group and a benzyl group, and R ₂ and R ₃ may be the same or different. R ₄ : hydrogen or a linear or branched alkyl group, alkenyl group, phenyl group, benzyl group or halogenated alkyl group having 1 to 10 carbon atoms X: 1 to 40 In addition, halogen salts, acetates and sulfates are also included R ₅ , R ₆ : hydrogen or a linear or branched alkyl group or alkenyl group having 1 to 10 carbon atoms (provided that the alkyl group or alkenyl group is Include those having an ether bond in the carbon chain), a phenyl group and a benzyl group, and R ₅
And R ₆ may be the same or different. 2. An alkylene polyol having two or more active hydrogen groups in the molar addition polymerization ratio of ethylene oxide and an alkylene oxide having 3 or more carbon atoms as an active hydrogen compound in the range of 80/20 to 0/100, and / Or the average molecular weight
The method for producing a polymer foam according to claim 1, wherein 250 or more polyamines are used.