JP4050952B2 - Production method of polyurethane foam moldings - Google Patents

Description

【００１６】
（式中、Ｒ¹ 、Ｒ² 及びＲ³ はそれぞれ独立して、アルキル基、フェニル基、水酸基、アミノ基、ポリエーテル基又はアミノアルキル基、ｍ及びｎは、それぞれ独立して、０又は１〜200 の整数を示す。但し、ｍとｎとの和は１以上である）で表されるジメチルポリシロキサン変性体等が挙げられる。
【００１７】
式(I) において、Ｒ¹ 、Ｒ² 及びＲ³ は、離型性の観点から、炭素数１〜22のアルキル基が好ましく、メチル基がより好ましい。また、ｍとｎとの和は、離型性の観点から、好ましくは１〜200 の整数、より好ましくは１〜100 の整数、更に好ましくは１〜50の整数である。
【００１８】
ジメチルポリシロキサン及びその変性体の数平均分子量は、離型性の観点から、好ましくは100 〜5000、より好ましくは500 〜2000である。
【００１９】
離型剤におけるシリコーン化合物の含有量は、該シリコーン化合物種類によって異なるので一概には決定することができないが、通常、十分な離型性を発現させる観点から、好ましくは0.5 〜10重量％、より好ましくは0.5 〜５重量％、更に好ましくは0.5 〜２重量％である。
【００２０】
なお、本発明においては、チッ素含有化合物がステアリルアミンアセテートであり、シリコーン化合物がジメチルポリシロキサンである組合せが、ピンホールの低減の観点から好ましい。
【００２１】
本発明の離型剤は、チッ素含有化合物、シリコーン化合物及び必要により、添加剤及び溶媒を混合することによって容易に製造することができる。
【００２２】
溶媒としては、例えば、水、並びにアルカン類及びそのハロゲン化物、アルケン類及びそのハロゲン化物、アルコール類、エーテル類等の有機溶媒が挙げられ、これらは、それぞれ単独で又は２種以上を混合して用いることができる。これらの溶媒の中では、溶媒の揮発性がよく、生産性を向上させる観点から、ジクロロメタンが好ましく、また作業環境の観点から、水が好ましい。
【００２３】
離型剤における溶媒の量は、チッ素含有化合物、シリコーン化合物及び添加剤の残部であることが好ましい。
【００２４】
なお、溶媒として水を用いる場合、チッ素含有化合物及びシリコーン化合物を水中に乳化又は分散させるために、添加剤として乳化剤又は分散剤を離型剤に添加することができる。乳化剤又は分散剤としては、例えば、アニオン界面活性剤、カチオン界面活性剤、両性界面活性剤、非イオン界面活性剤等が挙げられる。乳化剤又は分散剤の量は、その種類等によって異なるので一概には決定することができないので、その種類等に応じて適宜、調整することが好ましい。
【００２５】
かくして得られる本発明の離型剤は、成形型内で所定形状を有する成形体を成形する際に、その成形型の内面に塗布する離型剤として好適に使用しうるものである。
【００２６】
離型剤を成形型の内面に付着させる方法としては、例えば、塗布、噴霧、浸漬等の方法が挙げられるが、本発明はかかる方法によって限定されるものではない。
【００２７】
成形型の内面に付着させるチッ素含有化合物及びシリコーン化合物の合計量は、ピンポールを低減させ、離型性を高める観点から、好ましくは0.01〜10g/m²、より好ましくは0.02〜５g/m²、更に好ましくは0.05〜１g/m²である。
【００２８】
本発明の離型剤は、種々の液状成形材料に対して好適に用いることができるが、特に、液状ポリウレタンフォーム成形材料に対して好適に用いることができる。
【００２９】
本発明の離型剤を用いてポリウレタンフォーム成形体を製造する場合、離型剤を成形型の内面に塗布した後、液状ポリウレタンフォーム成形材料を成形型内に注入し、該液状成形材料を硬化させて成形することにより、ピンホール等の発生がないポリウレタンフォーム成形体を容易に製造することができる。このようにピンホール等の発生がないポリウレタンフォームを得ることができる理由は定かではないが、本発明の離型剤によって、成形型との接触面でポリウレタンフォーム成形体のセルが破泡するのが抑制されるか、又はポリウレタンフォーム成形体のスキン層での泡化反応が抑制されることによるものと考えられる。
【００３０】
液状ポリウレタンフォーム成形材料としては、特に限定がなく、公知のものを用いることができるが、ポリオール溶液とイソシアネートプレポリマーを用いることが好ましい。
【００３１】
ポリオール溶液は、ポリエーテルポリオール、ポリエステルポリオール等のポリオール成分、鎖延長剤、水、整泡剤、及び必要に応じて触媒等を混合することによって調製することができる。
【００３２】
イソシアネートプレポリマーは、ポリエーテルポリオール、ポリエステルポリオール等のポリオール成分と、メチレンジフェニルジイソシアネートやその変性物等のポリイソシアネート成分とを反応させることによって得られる。
【００３３】
ポリエーテルポリオール、ポリエステルポリオール、鎖延長剤、整泡剤、触媒、ポリイソシアネート成分、イソシアネートプレポリマー等の種類及び量には、特に限定がなく、例えば、岩田敬治編「ポリウレタン樹脂ハンドブック」（昭和62年９月25日、日刊工業新聞社発行）に記載されているような一般に使用されている成分を用いることができる。
【００３４】
なお、成形型の材質には、特に限定がない。その例としては、鉄、ステンレス鋼、銅、アルミニウム、アルミニウム合金、エポキシ樹脂、フェノール樹脂等が挙げられる。また、成形型の内面形状にも特に限定がなく、目的とする成形体の形状に対応した形状を有するのであればよく、任意である。
【００３５】
かくして、液状ポリウレタンフォーム成形材料等の液状成形材料を成形型内に注入し、該液状成形材料を硬化させて成形した後、脱型することにより、ポリウレタンフォーム等の成形体が得られる。かかる成形体の表面ではピンホール等の有害な欠陥等の発生が抑制されているので、得られた成形体は、表面性に優れたものである。
【００３６】
得られたポリウレタンフォーム成形体の密度は、成形体表面のピンホールの低減の観点から、好ましくは0.2 〜0.8g/cm³、より好ましくは0.2 〜0.6g/cm³、更に好ましくは0.2 〜0.4g/cm³である。
【００３７】
本発明の製造法によって得られたポリウレタンフォーム成形体の好適な用途としては、紳士靴、婦人靴、子供靴、サンダル、スポーツ靴等が挙げられる。一般に、靴底は、サンダル、紳士靴等に使用されるアウトソールと、スポーツ靴等に使用されるミッドソールとに分類される。本発明の製造法は、特に軽量化が図られた、密度が0.2 〜0.4g/cm³であるミッドソールを製造する際に、成形体表面にピンホールが発生するのを抑制する観点から、好適に適用することができる。
【００３８】
【実施例】
実施例１〜６
表１に示す各成分をホモミキサー〔特殊機化工業（株）製、商品名：T. K. HOMO MIXER MARK II〕を用い、回転数6000rpm で20分間混合することにより、離型剤を得た。
【００３９】
試験用成形型〔厚さ約10mm、幅約100mm 、長さ約200mm の成形用金型、材質：アルミニウム〕の温度を60±２℃に温度調節した後、離型剤を成形型の内面にスプレーガンで噴霧し、離型剤のチッ素含有化合物及びシリコーン化合物の合計付着量が0.1g/ m²となるように噴霧し、エアブローで余分な離型剤を除去し、ウエスで拭き取った。
【００４０】
次に、イソシアネートプレポリマー〔花王（株）製、商品名：エディフォームB-3525〕をポアリング型の低圧発泡機の一方のタンクに入れ、その液温を35℃に調整し、ポリオール配合液〔花王（株）製、商品名：エディフォームAS-6-53SH 〕100.0 重量部及び触媒〔花王（株）製、商品名：エディフォームAS-651-26C〕1.1 重量部、整泡剤〔花王（株）製、商品名：エディフォームAS-60H〕0.3 重量部、鎖延長剤〔花王（株）製、商品名：エディフォームAS-60E〕3.4 重量部、水0.7 重量部及び顔料〔花王（株）製、商品名：エディフォームNV-7303-10〕4.3 重量部を混合した混合液を他方のタンクに入れ、その液温を40℃に調整した。
【００４１】
この低圧発泡機を用いてイソシアネートプレポリマーと混合液とをイソシアネートインデックスが106 となるように混合攪拌し、前記成形型内に注入し、発 泡させ、注入から５分間経過後に脱型し、ポリウレタンフォーム成形体を得た。脱型の際、成形型への付着がなく、離型を円滑に行うことができた。
【００４２】
得られた成形体は、いずれも、密度約0.30g/cm³ 、硬度（Asker C)55±２を有していた。
【００４３】
なお、実施例１〜３では、飽和脂肪族アミンを含有する離型剤が、実施例４〜６では、有機アンモニウム塩を含有する離型剤が用いられている。
【００４４】
次に、得られたポリウレタンフォーム表面のピンホールの発生数を以下の方法にしたがって調べた。その結果を表１に示す。
【００４５】
〔ピンホールの発生数〕
ポリウレタンフォーム成形体を５個製造し、得られた成形体の下面の中心付近の表面を拡大鏡（倍率：10倍）を用いて、一辺が１mmの格子中に存在している直径が0.05〜 0.5mmの孔の数を数えた。これと同様の操作を５つの成形体について行い、その平均値を算出した。
【００４６】
比較例１〜２
表１に示す組成の離型剤を用いた他は、実施例１と同様にしてポリウレタンフォーム成形体を製造し、得られたポリウレタンフォーム表面のピンホールの発生数を数えた。その結果を表１に示す。
【００４７】
なお、表１に示す各成分は、以下のことを意味する。
・ポリシロキサン：ジメチルポリシロキサン〔東レ・ダウコーニング・シリコーン（株）製、商品名：SH200 〕
・ファーミン86T ：花王（株）製、商品名。飽和脂肪族アミン（ミリスチルアミン４重量％、パルミチルアミン30重量％及びステアリルアミン66重量％の混合物）
・ジアミンR86 ：花王（株）製、商品名。アルキルプロピレンジアミン（ミリスチリルプロピレンジアミン５重量％、パルミチルプロピレンジアミン50重量％及びステアリルプロピレンジアミン45重量％の混合物）
・アセタミン86：花王（株）製、商品名。飽和脂肪族アミンアセテート（ミリスチリルアミンアセテート４重量％、パルミチルアミンアセテート30重量％及びステアリルアミンアセテート66重量％の混合物）
・パラフィン〔シグマ・アルドリッチ(SIGMA ALDRICH) 社製、商品名:Paraffin liquid〕
・乳化剤：非イオン性界面活性剤〔花王（株）製、商品名：エマルゲン106 〕
【００４８】
【表１】

【００４９】
表１に示された結果から、各実施例で得られたポリウレタンフォーム成形体は、その表面にピンホール等の表面性を低下させる欠陥がほとんどないことから、表面性に優れたものであることがわかる。
【００５０】
【発明の効果】
本発明の製造法によれば、ポリウレタンフォーム成形体の表面にピンホール等の表面性を低下させる欠陥をほとんど発生させずに、表面性に優れた成形体を得ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a polyurethane foam molded article. More specifically, the present invention relates to a method for producing a polyurethane foam molded article that can be suitably used as a shoe sole and the like, and a mold release agent for producing polyurethane foam that can be suitably used for the production method.
[0002]
[Prior art]
When a liquid polyurethane foam molding material is injected into a mold and the liquid molding material is cured to produce a molded body, the manufactured molded body is easily released from the mold on the inner surface of the molding mold. Therefore, a release agent is applied.
[0003]
In recent years, water-based mold release agents have been proposed in order to improve fire hazards and work environment problems. For example, an emulsion type aqueous release agent in which an oil or wax component and an aliphatic amine are emulsified with an organic ammonium salt is known (US Pat. No. 4,969,952).
[0004]
However, when this type of water-based mold release agent is used on the inner surface of a mold when molding a shoe sole or the like where the appearance of the molded product is regarded as important with polyurethane foam, Since a large number of holes having a diameter of 0.05 to 0.5 mm called holes are generated, there is a disadvantage that the surface property is inferior. Such a decrease in surface properties is a factor that causes problems such as deterioration in the appearance of molded products, poor color unevenness and flow lines when the molded body is coated, and a decrease in water absorption resistance. Yes.
[0005]
[Problems to be solved by the invention]
The present invention relates to a method capable of producing a polyurethane foam with almost no defects on the surface such as pinholes that lower the surface properties of the molded article, and a release agent for producing a polyurethane foam which can be suitably used in the method. It is an issue to provide.
[0006]
[Means for Solving the Problems]
The present invention
(1) (A) amine and one or more nitrogen-containing compound selected from the group consisting of organic ammonium salts, wherein said amine, myristyl amine, palmityl amine, from Suteariruami down及 beauty stearyl propylenediamine A mold release agent for producing polyurethane foam (hereinafter simply referred to as "release"), which is one or more compounds selected from the group consisting of the organic ammonium salt being stearylamine acetate and (B) a silicone compound. And (2) a method for producing a polyurethane foam molded article using the release agent.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
For the release agent of the present invention, one or more nitrogen-containing compounds selected from the group consisting of amines and organic ammonium salts are used. The number of carbon atoms in the nitrogen-containing compound is preferably 8 to 22, more preferably 12 to 20, and still more preferably 16 to 18 from the viewpoint of reducing pinholes.
[0008]
The number of carbon atoms of the amine is preferably 8 to 22, more preferably 12 to 20, and still more preferably 16 to 18 from the viewpoint of reducing pinholes.
[0009]
Examples of amines are stearylamine, capryl, lauryl amine, Mi Risuchi triethanolamine, palmityl amine, 1,8-diamino-octane, 1, 10-diaminodecane, carbon atoms, such as stearyl propylene diamine having from 8 to 22 Saturated aliphatic amines; unsaturated aliphatic amines having 8 to 22 carbon atoms such as oleylamine and linolylamine; aromatic amines having 8 to 22 carbon atoms such as metaxylylenediamine and diethyltoluenediamine. It can use individually or in mixture of 2 or more types. Among these, from the viewpoint of reducing pinholes, a saturated aliphatic amine having 8 to 22 carbon atoms is preferable, and stearylamine is more preferable.
[0010]
The number of carbon atoms of the organic ammonium salt is preferably 8 to 22, more preferably 12 to 20, and still more preferably 16 to 18 from the viewpoint of reducing pinholes.
[0011]
Specific examples of the organic ammonium salt include stearylamine acetate, laurylamine acetate, stearylamine chloride, laurylamine chloride and the like, and these can be used alone or in admixture of two or more. Among these, stearylamine acetate is preferable from the viewpoint of reducing pinholes.
[0012]
Although the content of the nitrogen-containing compound in the release agent varies depending on the type of the nitrogen-containing compound, it cannot be determined unconditionally, but usually from the viewpoint of suppressing the occurrence of pinholes, preferably 0.1 to It is 10% by weight, more preferably 0.1 to 5% by weight, still more preferably 0.1 to 2% by weight.
[0013]
Moreover, a silicone compound is used for the release agent of the present invention.
Examples of the silicone compound include silicone oil and silicone wax. Among the silicone compounds, a silicone compound having a polysiloxane structure is preferred from the viewpoint of mold releasability.
[0014]
Representative examples of silicone compounds having a polysiloxane structure include dimethylpolysiloxane and modified products thereof. Specific examples of dimethylpolysiloxane and modified products thereof include formula (I):
[0015]
[Chemical 1]

[0016]
Wherein R ¹ , R ² and R ³ are each independently an alkyl group, phenyl group, hydroxyl group, amino group, polyether group or aminoalkyl group, and m and n are each independently 0 or 1 An integer of ˜200, where the sum of m and n is 1 or more).
[0017]
In the formula (I), R ¹ , R ² and R ³ are preferably an alkyl group having 1 to 22 carbon atoms and more preferably a methyl group from the viewpoint of releasability. The sum of m and n is preferably an integer of 1 to 200, more preferably an integer of 1 to 100, and still more preferably an integer of 1 to 50, from the viewpoint of releasability.
[0018]
The number average molecular weight of dimethylpolysiloxane and its modified product is preferably 100 to 5000, and more preferably 500 to 2000, from the viewpoint of releasability.
[0019]
The content of the silicone compound in the release agent varies depending on the type of the silicone compound and cannot be determined unconditionally. However, from the viewpoint of expressing sufficient release properties, it is preferably 0.5 to 10% by weight. Preferably it is 0.5 to 5 weight%, More preferably, it is 0.5 to 2 weight%.
[0020]
In the present invention, a combination in which the nitrogen-containing compound is stearylamine acetate and the silicone compound is dimethylpolysiloxane is preferable from the viewpoint of reducing pinholes.
[0021]
The release agent of the present invention can be easily produced by mixing a nitrogen-containing compound, a silicone compound, and, if necessary, an additive and a solvent.
[0022]
Examples of the solvent include water and organic solvents such as alkanes and their halides, alkenes and their halides, alcohols, ethers, etc., each of which can be used alone or in combination of two or more. Can be used. Among these solvents, dichloromethane is preferable from the viewpoint of good volatility of the solvent and productivity, and water is preferable from the viewpoint of the working environment.
[0023]
The amount of solvent in the release agent is preferably the balance of the nitrogen-containing compound, the silicone compound and the additive.
[0024]
In addition, when using water as a solvent, in order to emulsify or disperse a nitrogen containing compound and a silicone compound in water, an emulsifier or a dispersing agent can be added to a mold release agent as an additive. Examples of the emulsifier or dispersant include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant. Since the amount of the emulsifier or the dispersant varies depending on the type and the like and cannot be determined unconditionally, it is preferable to adjust appropriately according to the type and the like.
[0025]
The mold release agent of the present invention thus obtained can be suitably used as a mold release agent applied to the inner surface of the mold when the molded body having a predetermined shape is molded in the mold.
[0026]
Examples of the method for attaching the mold release agent to the inner surface of the mold include methods such as coating, spraying, and dipping, but the present invention is not limited to such methods.
[0027]
The total amount of nitrogen-containing compound is deposited on the inner surface of the mold and silicone compounds reduce pinholes, in view of enhancing the releasing property, preferably 0.01 to 10 g / m ^2, more preferably 0.02 to 5 g / m ² , more preferably from 0.05 to 1 g / m ^2.
[0028]
The release agent of the present invention can be suitably used for various liquid molding materials, but can be particularly suitably used for liquid polyurethane foam molding materials.
[0029]
When producing a polyurethane foam molded article using the mold release agent of the present invention, after applying the mold release agent to the inner surface of the mold, the liquid polyurethane foam molding material is injected into the mold and the liquid molding material is cured. By molding it, it is possible to easily produce a polyurethane foam molded body free from the occurrence of pinholes and the like. The reason why it is possible to obtain a polyurethane foam that does not generate pinholes in this way is not clear, but the mold release agent of the present invention causes the cells of the polyurethane foam molded product to foam at the contact surface with the mold. This is considered to be due to suppression of foaming reaction in the skin layer of the polyurethane foam molded article.
[0030]
The liquid polyurethane foam molding material is not particularly limited and known materials can be used, but a polyol solution and an isocyanate prepolymer are preferably used.
[0031]
The polyol solution can be prepared by mixing a polyol component such as polyether polyol and polyester polyol, a chain extender, water, a foam stabilizer, and a catalyst as necessary.
[0032]
The isocyanate prepolymer is obtained by reacting a polyol component such as polyether polyol or polyester polyol with a polyisocyanate component such as methylene diphenyl diisocyanate or a modified product thereof.
[0033]
There are no particular limitations on the types and amounts of polyether polyols, polyester polyols, chain extenders, foam stabilizers, catalysts, polyisocyanate components, isocyanate prepolymers, etc. Commonly used components as described in September 25, 2005, published by Nikkan Kogyo Shimbun) can be used.
[0034]
The material of the mold is not particularly limited. Examples thereof include iron, stainless steel, copper, aluminum, aluminum alloy, epoxy resin, phenol resin, and the like. Further, the shape of the inner surface of the molding die is not particularly limited, and may be arbitrary as long as it has a shape corresponding to the shape of the target molded body.
[0035]
Thus, a liquid molding material such as a liquid polyurethane foam molding material is injected into a mold, and after the liquid molding material is cured and molded, it is demolded to obtain a molded body such as a polyurethane foam. Since the occurrence of harmful defects such as pinholes is suppressed on the surface of the molded body, the obtained molded body has excellent surface properties.
[0036]
The density of the obtained polyurethane foam molded product is preferably 0.2 to 0.8 g / cm ³ , more preferably 0.2 to 0.6 g / cm ³ , and still more preferably 0.2 to 0.4 from the viewpoint of reducing pinholes on the surface of the molded product. g / cm ³ .
[0037]
Suitable uses of the polyurethane foam molded article obtained by the production method of the present invention include men's shoes, women's shoes, children's shoes, sandals, sports shoes and the like. Generally, a shoe sole is classified into an outsole used for sandals, men's shoes and the like, and a midsole used for sports shoes and the like. From the viewpoint of suppressing the occurrence of pinholes on the surface of the molded product when manufacturing a midsole having a density of 0.2 to 0.4 g / cm ^3, which is particularly lightweight, It can be suitably applied.
[0038]
【Example】
Examples 1-6
Each component shown in Table 1 was mixed for 20 minutes at a rotational speed of 6000 rpm using a homomixer (trade name: TK HOMO MIXER MARK II, manufactured by Tokushu Kika Kogyo Co., Ltd.) to obtain a release agent.
[0039]
Adjust the temperature of the test mold (thickness mold about 10 mm, width about 100 mm, length about 200 mm, material: aluminum) to 60 ± 2 ° C, and then apply the release agent to the inner surface of the mold It sprayed with the spray gun, it sprayed so that the total adhesion amount of the nitrogen-containing compound and silicone compound of a mold release agent might be set to 0.1 g / m < ² >, The excess mold release agent was removed with the air blow, and it wiped off with the waste cloth.
[0040]
Next, an isocyanate prepolymer (trade name: Edifice B-3525, manufactured by Kao Corporation) is placed in one tank of a pore type low pressure foaming machine, the liquid temperature is adjusted to 35 ° C., and a polyol compound solution [ Product name: EDIFORM AS-6-53SH] manufactured by Kao Corporation 100.0 parts by weight and catalyst [product name: EDIFORM AS-651-26C] 1.1 parts by weight, foam stabilizer [Kao ( Co., Ltd., trade name: Edificoform AS-60H] 0.3 parts by weight, chain extender [manufactured by Kao Corp., trade name: Edificoform AS-60E] 3.4 parts by weight, water 0.7 parts by weight and pigment [Kao Corporation Product name: Edible Form NV-7303-10] The mixed liquid in which 4.3 parts by weight were mixed was placed in the other tank, and the liquid temperature was adjusted to 40 ° C.
[0041]
Using this low-pressure foaming machine, the isocyanate prepolymer and the mixed solution are mixed and stirred so that the isocyanate index is 106, poured into the mold, foamed, and demolded after 5 minutes from the casting, A foam molding was obtained. At the time of demolding, there was no adhesion to the mold, and the mold could be released smoothly.
[0042]
Each of the obtained molded bodies had a density of about 0.30 g / cm ³ and a hardness (Asker C) of 55 ± 2.
[0043]
In Examples 1 to 3, a release agent containing a saturated aliphatic amine is used, and in Examples 4 to 6, a release agent containing an organic ammonium salt is used.
[0044]
Next, the number of pinholes generated on the surface of the obtained polyurethane foam was examined according to the following method. The results are shown in Table 1.
[0045]
[Number of pinholes]
Five polyurethane foam molded bodies were produced, and the surface near the center of the lower surface of the molded body was magnified (magnification: 10 times) using a magnifier (magnification: 10 times). The number of 0.5 mm holes was counted. The same operation was performed on the five molded bodies, and the average value was calculated.
[0046]
Comparative Examples 1-2
A polyurethane foam molded article was produced in the same manner as in Example 1 except that the release agent having the composition shown in Table 1 was used, and the number of pinholes generated on the surface of the obtained polyurethane foam was counted. The results are shown in Table 1.
[0047]
In addition, each component shown in Table 1 means the following.
・ Polysiloxane: Dimethylpolysiloxane [Toray Dow Corning Silicone Co., Ltd., trade name: SH200]
・ Farmin 86T: Product name, manufactured by Kao Corporation. Saturated aliphatic amine (mixture of 4% by weight myristylamine, 30% by weight palmitylamine and 66% by weight stearylamine)
・ Diamine R86: Product name, manufactured by Kao Corporation. Alkylpropylenediamine (mixture of 5% by weight myristylpropylenediamine, 50% by weight palmitylpropylenediamine and 45% by weight stearylpropylenediamine)
-Acetamine 86: Product name, manufactured by Kao Corporation. Saturated aliphatic amine acetate (mixture of 4% by weight myristylamine acetate, 30% by weight palmitylamine acetate and 66% by weight stearylamine acetate)
・ Paraffin (SIGMA ALDRICH, trade name: Paraffin liquid)
・ Emulsifier: Nonionic surfactant [trade name: Emulgen 106, manufactured by Kao Corporation]
[0048]
[Table 1]

[0049]
From the results shown in Table 1, the polyurethane foam moldings obtained in each example are excellent in surface properties because there are almost no defects that reduce the surface properties such as pinholes on the surface. I understand.
[0050]
【The invention's effect】
According to the production method of the present invention, it is possible to obtain a molded article having excellent surface properties without causing almost any defects such as pinholes on the surface of the polyurethane foam molded article.

Claims (4)

(A) amine and one or more nitrogen-containing compound selected from the group consisting of organic ammonium salts, wherein said amine, myristyl amine, palmityl amine, from the group consisting of Suteariruami down及 beauty stearyl propylenediamine A mold release agent for producing polyurethane foam, which is one or more selected compounds, the organic ammonium salt is stearylamine acetate , and (B) a silicone compound. Release agents for polyurethane foams according to claim 1 Symbol mounting a silicone compound silicone compound having a polysiloxane structure. A method for producing a polyurethane foam molded article using the release agent for producing polyurethane foam according to claim 1 or 2 . Preparation of polyurethane foam according to claim 3, wherein the density of the polyurethane foam is 0.2 0.8 g / cm ^3.