JPH03174457A - Preparation of polyurethane sponge - Google Patents
Preparation of polyurethane spongeInfo
- Publication number
- JPH03174457A JPH03174457A JP1313978A JP31397889A JPH03174457A JP H03174457 A JPH03174457 A JP H03174457A JP 1313978 A JP1313978 A JP 1313978A JP 31397889 A JP31397889 A JP 31397889A JP H03174457 A JPH03174457 A JP H03174457A
- Authority
- JP
- Japan
- Prior art keywords
- water
- salts
- salt
- starch
- polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002635 polyurethane Polymers 0.000 title claims description 23
- 239000004814 polyurethane Substances 0.000 title claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 150000003839 salts Chemical class 0.000 claims abstract description 37
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 15
- 239000006185 dispersion Substances 0.000 claims abstract description 13
- 238000002425 crystallisation Methods 0.000 claims abstract description 8
- 230000008025 crystallization Effects 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 229920002472 Starch Polymers 0.000 claims description 16
- 239000008107 starch Substances 0.000 claims description 15
- 235000019698 starch Nutrition 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 29
- 239000000203 mixture Substances 0.000 abstract description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract description 4
- 235000011152 sodium sulphate Nutrition 0.000 abstract description 4
- 239000007832 Na2SO4 Substances 0.000 abstract 1
- 238000000748 compression moulding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 10
- 239000013078 crystal Substances 0.000 description 7
- 239000002537 cosmetic Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229920001592 potato starch Polymers 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- -1 Freon Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000004688 heptahydrates Chemical group 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はポリウレタンスポンジの製造方法に係り、更に
詳しくは微細な連続気孔を有するポリウレタンスポンジ
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a polyurethane sponge, and more particularly to a method for manufacturing a polyurethane sponge having fine continuous pores.
（従来の技術）
周知の如く、ポリウレタン樹脂を素材とするスポンジは
、疎水性且つ軽量であり、緩衝材、保温材、充填材、あ
るいは雑貨用等に汎用されそれぞれの用途に適した構造
のものが用いられている。(Prior Art) As is well known, sponges made of polyurethane resin are hydrophobic and lightweight, and are widely used as cushioning materials, heat insulating materials, fillers, and miscellaneous goods, and have structures suitable for each purpose. is used.
例えば化粧用のパフ材としては、適度な気孔率を有し、
きめの細い表面で吸水性のよいものが感触がよく、化粧
料も有効に使用できるが、きめの荒いものは感触が悪く
、気孔率が大き過ぎるものはボリューム感に欠は底つき
現象があられれ好ましくない、また、拭浄材として用い
るには吸水吸液性のよいものが好適である。For example, as a cosmetic puff material, it has an appropriate porosity,
Those with a fine-grained surface and good water absorption feel good and can be used effectively in cosmetics, but those with a rough texture have a poor feel, and those with too high a porosity lack a sense of volume and can cause the phenomenon of bottoming out. However, for use as a wiping material, it is preferable to use a material that has good water-absorbing properties.
従来、ポリウレタンスポンジは発泡剤を用いる方法によ
り製造されている。発泡剤とし、では炭酸ガス、フレオ
ン、空気などのほか分解型の有機系発泡剤等が用いられ
ている。しかしながら発泡剤を用いる方法では比較的大
きな気孔のものしか得られす、また気孔率を低くすると
連続気孔どならず独立気孔のものとなり吸水性に乏しく
、連続気孔のスポンジを得るためには気孔率が極めて大
きなもの（例えば９５容量％以上）とする必要があった
。即ち、従来の方法では化粧用のパフ材や拭浄材に適し
た、微細な気孔径で、連続気孔を有し且つ気孔率が５０
〜９０容通％程度のものを得ることは極めて困難であっ
た。Conventionally, polyurethane sponges have been manufactured by a method using a foaming agent. As blowing agents, carbon dioxide, Freon, air, and other decomposable organic blowing agents are used. However, with the method using a foaming agent, only relatively large pores can be obtained, and if the porosity is lowered, the pores become independent rather than continuous, resulting in poor water absorption. It was necessary to have an extremely large amount (for example, 95% or more by volume). In other words, in the conventional method, the material has a fine pore diameter, continuous pores, and a porosity of 50, which is suitable for cosmetic puff materials and wiping materials.
It was extremely difficult to obtain one with a content of about 90%.
（発明が解決しようとする課題〉
本発明の目的は、微細な連続気孔を有し、ボリューム感
に冨んだポリウレタンスポンジを効率よく安定して製造
する方法を提供するにある。(Problems to be Solved by the Invention) An object of the present invention is to provide a method for efficiently and stably producing a polyurethane sponge that has fine continuous pores and is rich in volume.
（課題を解決するための手段）
上述の目的を達成するため本発明は、ポリウレタンエラ
ストマーの水分散体に結晶水を吸収しうる塩類を加えて
撹拌し、この塩類に水分を吸収させた後、これを型枠に
入れ圧縮成型して中間体となし、この中間体を熱処理し
た後水洗して前記塩類を除去することを特徴とするポリ
ウレタンスポンジの製造方法を第１の要旨とし、ポリウ
レタンエラストマーの水分散体に澱粉および結晶水を吸
収しうる塩類を加えて撹拌し、前記澱粉および塩類に水
分を吸収させた後、これを型枠に入れ圧縮成型して中間
体となし、この中間体を熱処理した後水洗して前記澱粉
および塩類を除去することを特徴とするポリウレタンス
ポンジの製造方法を第２の要旨とする。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention adds salts capable of absorbing crystallization water to an aqueous dispersion of polyurethane elastomer and stirs the mixture, and after allowing the salts to absorb water, The first gist is a method for producing a polyurethane sponge, which is characterized in that this is placed in a mold and compression molded to obtain an intermediate, and this intermediate is heat treated and then washed with water to remove the salts. Starch and salts capable of absorbing crystallization water are added to the aqueous dispersion and stirred to allow the starch and salts to absorb water, and then placed in a mold and compression molded to form an intermediate. The second gist is a method for producing a polyurethane sponge, which is characterized in that the starch and salts are removed by washing with water after heat treatment.
本発明に用いるポリウレタンエラストマーの水分散体と
は、非反応型のポリウレタンエラストマーを強制乳化ま
たは自己乳化させたものである。The aqueous dispersion of polyurethane elastomer used in the present invention is one obtained by forced emulsification or self-emulsification of a non-reactive polyurethane elastomer.
中でも疎水性ウレタンエラストマーを少量の特殊界面活
性剤により乳化分散した強制乳化型のものが、耐水、耐
熱水性能の点で優れており好ましい。Among these, a forced emulsion type in which a hydrophobic urethane elastomer is emulsified and dispersed with a small amount of a special surfactant is preferable because it is excellent in water resistance and hot water resistance.
本発明に用いる結晶水を吸収しうる塩類とは、結晶中に
結晶水を含むことができる塩類のうち、結晶水を含有し
ない無水物または結晶水をさらに含有しうる状態のもの
である。かかる塩類としては硫酸ナトリウム（Ｎ ａ
２ Ｓ ｏｓ ） 、硫酸銅（ＣｕｔＳＯｎ）等を挙
げることができ、例えば硫酸ナトリウムは７水塩、１０
水塩が知られ、１モルの無水硫酸ナトリウムは１０モル
の水をその結晶中に吸収含有することができる。大きな
吸水量を得るには、上記塩類は結晶水をもたない無水物
が好適であり、通常は粉末状のものが用いられる。The salts capable of absorbing crystal water used in the present invention are salts capable of containing crystal water in their crystals, and are anhydrous salts that do not contain crystal water or salts that can further contain crystal water. Such salts include sodium sulfate (Na
2S os ), copper sulfate (CutSOn), etc. For example, sodium sulfate is heptahydrate, 10
Water salts are known; 1 mole of anhydrous sodium sulfate can absorb 10 moles of water into its crystals. In order to obtain a large amount of water absorption, the above-mentioned salts are preferably anhydrous salts having no water of crystallization, and powdered salts are usually used.
本発明の第１の方法でポリウレタン多孔体を製造するに
は、まず上記ポリウレタンエラストマーの水分散体に、
上記塩類を加えて撹拌し、均一に混合するとともに添加
した塩類に水分を吸収させて、水分散状態であったポリ
ウレタンエラストマーを析出させ、ポリウレタンエラス
トマーと結晶水をもった塩類との混合物とする。このも
のは全体として流動性のない粉末状の混合物で、好まし
くはやや湿った状態とする。ここで添加する塩類の量は
、用いるポリウレタンエラストマーの水分散体に含まれ
る水分量と塩類が吸収しうる水量を勘案して適宜選定す
ればよい。In order to produce a polyurethane porous body by the first method of the present invention, first, add to the aqueous dispersion of the polyurethane elastomer,
The above salts are added and stirred to uniformly mix and the added salts absorb water to precipitate the polyurethane elastomer that was in a water-dispersed state, forming a mixture of the polyurethane elastomer and the salts containing water of crystallization. This is a generally non-flowing powder mixture, preferably in a slightly moist state. The amount of salts added here may be appropriately selected in consideration of the amount of water contained in the aqueous dispersion of the polyurethane elastomer used and the amount of water that can be absorbed by the salts.
次に得られた粉末状の混合物を型枠に入れ、例えば５０
〜２００ｋｇ／ｃｍ”で３０〜１２ｏ秒間程度加圧威型
し、保形性のよい中間体となし、これを熱処理してポリ
ウレタン戒型体とする。熱処理の温度および時間は、使
用するポリウレタンエラストマーの種類により適宜選定
すればよいが、通常７０〜１２０℃程度の温度で行われ
る。Next, the obtained powdery mixture is placed in a mold, for example, 50
~200kg/cm'' for 30~12o seconds to form an intermediate with good shape retention, which is then heat treated to form a polyurethane shaped body.The temperature and time of the heat treatment depend on the polyurethane elastomer used. Although the temperature may be selected as appropriate depending on the type, it is usually carried out at a temperature of about 70 to 120°C.
次に得られた成型体を充分水洗し、残存する塩類を溶解
し除去せしめ、多孔質構造を付与することにより、本発
明の第１の方法で製造されるポリウレタンスポンジを得
ることができる。Next, the obtained molded body is sufficiently washed with water to dissolve and remove the remaining salts, thereby imparting a porous structure to the polyurethane sponge produced by the first method of the present invention.
上述の如く本発明の方法は、結晶水を吸収しうる塩類を
吸水剤（脱水剤）及び気孔形成材として用いることを特
徴とするが、気孔径は添加する塩類の粒径や撹拌条件に
、気孔率は塩類の添加量に大きく影響され、その範囲は
ある程度限定されることになる。そこで気孔径、気孔率
をある程度コントロールするため本発明の第２の方法で
は、気孔を形成するための補助手段として澱粉を併用す
ることを特徴としている。即ち上述の第１の方法におい
て、前記ポリウレタンエラストマーの水分散体に前記塩
類を添加する際に、同時に澱粉を加えて撹拌混合するの
である。ここで澱粉の投入は、塩類を添加する前に添加
する方が均一に混合しゃすく好ましい。気孔形成材とし
て澱粉を併用することにより、気孔径が２００μｍ以下
の比較的小さい気孔を容易に得ることができる。ここで
用いられる澱粉とは、植物から抽出された澱粉粒あるい
は一旦α化した澱粉を乾燥した後粉砕したものであり、
好ましくは分級されたものが用いられ、例えば馬鈴薯澱
粉、トウモロコシ澱粉、小麦澱粉。As mentioned above, the method of the present invention is characterized by using salts that can absorb crystal water as a water absorbing agent (dehydrating agent) and a pore forming material, but the pore size depends on the particle size of the salts added and the stirring conditions. The porosity is greatly affected by the amount of salt added, and its range is limited to some extent. Therefore, in order to control the pore diameter and porosity to some extent, the second method of the present invention is characterized by the use of starch as an auxiliary means for forming pores. That is, in the first method described above, when the salts are added to the aqueous dispersion of the polyurethane elastomer, starch is simultaneously added and mixed by stirring. Here, it is preferable to add starch before adding salts so that the starch can be mixed more uniformly. By using starch as a pore-forming material, relatively small pores with a pore diameter of 200 μm or less can be easily obtained. The starch used here is starch granules extracted from plants or starch that has been gelatinized and dried and then ground.
Preferably, classified ones are used, such as potato starch, corn starch, and wheat starch.
米Ｒ粒等が挙げられる。Examples include R-grain rice.
以上の方法に従って製造されたポリウレタンスポンジは
、平均気孔径５００μｍ以下２気孔率５０〜８０容量％
の比較的微細な連続気孔を有し、ボリューム感に富んだ
ものである。The polyurethane sponge produced according to the above method has an average pore diameter of 500 μm or less and a porosity of 50 to 80% by volume.
It has relatively fine continuous pores and is rich in volume.
（発明の効果）
従来行われていた発泡法で連続気孔構造のポリウレタン
スポンジを得るには、低い気孔率では極めて困難であり
、通常９５容量％以上、好ましくは９８容量％以上の気
孔率が必要であったが、本発明の方法によれば、例えば
５０〜ｂ
低い気孔率においても徽細な連続気孔構造のものが得ら
れ、このためへたり感のないボリューム感のあるポリウ
レタンスポンジを得ることができる。(Effect of the invention) It is extremely difficult to obtain a polyurethane sponge with an open pore structure by the conventional foaming method when the porosity is low, and a porosity of usually 95% by volume or more, preferably 98% by volume or more is required. However, according to the method of the present invention, a fine continuous pore structure can be obtained even at a low porosity of, for example, 50-b, and therefore a polyurethane sponge with a voluminous feel without a feeling of sagging can be obtained. Can be done.
又、同じ〈従来の発泡法では製造することが田工菫であ
った気孔径が５００μｍ以下の微細気孔・Ｄポリウレタ
ンスポンジを安定して効率よく製造することができ、こ
のものは極めて感触のよいものである。更に気孔形成材
として澱粉を併用する方法によれば、気孔径２００μｍ
以下の極めて微細な気孔を容易に得ることができ、例え
ば５００μｍ程度と２００μｍ以下の二種類の気孔径が
混在する連続気孔構造を有するポリウレタンスポンジを
得ることができる。このものは、にリューム感、感触及
び吸水性にすぐれ、就中感触が極めてよいものであり、
化粧用のパフおよび拭浄材に好適である。In addition, it is possible to stably and efficiently produce microporous D polyurethane sponge with a pore diameter of 500 μm or less, which was difficult to produce using conventional foaming methods, and has an extremely pleasant feel. It is something. Furthermore, according to the method of using starch as a pore-forming material, the pore diameter is 200 μm.
The following extremely fine pores can be easily obtained, for example, a polyurethane sponge having a continuous pore structure in which two types of pore diameters, approximately 500 μm and 200 μm or less, coexist can be obtained. This product has excellent bulkiness, texture, and water absorption, and has an especially good texture.
Suitable for cosmetic puffs and cleaning materials.
（実施例１〉
ポリウレタンエラストマー水分散体く商品名スーパーフ
レックスＥ−４０００，第一工業製薬■製、４５％エマ
ルジョン〉を４００ｇ採取し、これに無水硫酸ナトリウ
ム粉末９００ｇを添加し、品用式ミキサーにて撹拌混練
して、流動性を失なった若干湿りけのある粉末状態のも
のとした。これを平形の型枠に移し、プレス機にて圧力
１００ｋｇ／ｃｒｎ”で６０秒間加圧戒型し中間体を得
た。(Example 1) 400 g of polyurethane elastomer aqueous dispersion (trade name: Superflex E-4000, manufactured by Daiichi Kogyo Seiyaku ■, 45% emulsion) was collected, 900 g of anhydrous sodium sulfate powder was added thereto, and a product type mixer was added. The mixture was stirred and kneaded to form a slightly damp powder that had lost its fluidity. This was transferred to a flat mold and molded using a press for 60 seconds at a pressure of 100 kg/crn. An intermediate was obtained.
得られた中間体は、加圧前の約３分の１の厚さとなった
。次にこの中間体を９０℃で２４時間熱処理し成型体と
した後放冷し、続いて約５０’Ｃの大量の温水中に入れ
、５時間放置して硫酸ナトリウムを溶出除去し、更に充
分水洗してポリウレタンスポンジとした。The thickness of the obtained intermediate was approximately one-third that before pressing. Next, this intermediate was heat-treated at 90°C for 24 hours to form a molded product, and then allowed to cool, and then placed in a large amount of hot water at about 50'C, left to stand for 5 hours, and the sodium sulfate was eluted and removed. It was washed with water and made into a polyurethane sponge.
得られたポリウレタンスポンジは、平均気孔径５００μ
ｍ、気孔率６５容量％で見掛比重０．２５のものであり
良好な反発弾性を有する弾性体であり、また気孔構造は
従来の発泡法とは異なる形態の三次元網目状構造の連続
気孔を基本とするものであった。従来の発泡法による連
続気孔を有するポリウレタンスポンジには特有の底つき
感があったが、得られたポリウレタンスポンジにはその
ような底つき感もなく、ボリューム感に冨んだものであ
った。The obtained polyurethane sponge has an average pore diameter of 500μ
m, has a porosity of 65% by volume and an apparent specific gravity of 0.25, making it an elastic body with good rebound resilience, and the pore structure is a three-dimensional network structure with continuous pores, which is different from that of conventional foaming methods. It was based on Polyurethane sponges with open pores produced by conventional foaming methods had a peculiar feeling of bottoming out, but the obtained polyurethane sponge did not have that feeling of bottoming out and had a rich sense of volume.
（実施例２）
実施例１において、ポリウレタンエラストマー水分散体
に無水硫酸ナトリウムを添加する前に、馬鈴薯澱粉１０
ｇを添加し撹拌混合するほかは、実施例１と同様の方法
でポリウレタンスポンジを製造した。(Example 2) In Example 1, before adding anhydrous sodium sulfate to the polyurethane elastomer aqueous dispersion, 10% of potato starch was added.
A polyurethane sponge was produced in the same manner as in Example 1, except that g was added and mixed by stirring.
得られたポリウレタンスポンジは気孔径が５００μｍ程
度のものと１２０μｍ程度のものが混在し、気孔率が６
７容盪％の連続気孔を有し、実施例１よりもやや柔らか
い風合のもので、化粧用のパフに極めて好適な感触であ
った。The obtained polyurethane sponge has a mixture of pore diameters of approximately 500 μm and 120 μm, and a porosity of 6.
It had open pores of 7% by volume and had a slightly softer feel than Example 1, which was extremely suitable for use as a cosmetic puff.
Claims (2)
吸収しうる塩類を加えて攪拌し、この塩類に水分を吸収
させた後、これを型枠に入れ圧縮成型して中間体となし
、この中間体を熱処理した後水洗して前記塩類を除去す
ることを特徴とするポリウレタンスポンジの製造方法。(1) Salts capable of absorbing crystallization water are added to an aqueous dispersion of polyurethane elastomer and stirred. After the salts absorb water, this is placed in a mold and compression molded to form an intermediate. A method for producing a polyurethane sponge, which comprises heat-treating the body and then washing with water to remove the salts.
び結晶水を吸収しうる塩類を加えて撹拌し、前記澱粉お
よび塩類に水分を吸収させた後、これを型枠に入れ圧縮
成型して中間体となし、この中間体を熱処理した後水洗
して前記澱粉および塩類を除去することを特徴とするポ
リウレタンスポンジの製造方法。(2) Starch and salts capable of absorbing crystallization water are added to an aqueous dispersion of polyurethane elastomer and stirred to allow the starch and salts to absorb water. This is then placed in a mold and compression molded to form an intermediate. A method for producing a polyurethane sponge, characterized in that the intermediate is heat-treated and then washed with water to remove the starch and salts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1313978A JPH03174457A (en) | 1989-12-01 | 1989-12-01 | Preparation of polyurethane sponge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1313978A JPH03174457A (en) | 1989-12-01 | 1989-12-01 | Preparation of polyurethane sponge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03174457A true JPH03174457A (en) | 1991-07-29 |
| JPH0555545B2 JPH0555545B2 (en) | 1993-08-17 |
Family
ID=18047767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1313978A Granted JPH03174457A (en) | 1989-12-01 | 1989-12-01 | Preparation of polyurethane sponge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03174457A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006059508A1 (en) * | 2004-12-01 | 2006-06-08 | Fushimi Pharmaceutical Company, Limited | Continuous pore elastomer, process for producing the same, and water absorbing roller and swab |
| JP2018039862A (en) * | 2016-09-05 | 2018-03-15 | 名古屋市 | Manufacturing method of tilt porous resin molded body and resin composition used therefor |
| JP2020100733A (en) * | 2018-12-21 | 2020-07-02 | ブリヂストンスポーツ株式会社 | Foam composition, foam member and method for producing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922825A (en) * | 1982-07-28 | 1984-02-06 | Toshiba Corp | Transfer loader |
-
1989
- 1989-12-01 JP JP1313978A patent/JPH03174457A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922825A (en) * | 1982-07-28 | 1984-02-06 | Toshiba Corp | Transfer loader |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006059508A1 (en) * | 2004-12-01 | 2006-06-08 | Fushimi Pharmaceutical Company, Limited | Continuous pore elastomer, process for producing the same, and water absorbing roller and swab |
| KR101234246B1 (en) * | 2004-12-01 | 2013-02-18 | 가부시기가이샤후시미세이야꾸쇼 | Continuous pore elastomer, process for producing the same, and water absorbing roller and swab obtained from the same |
| US8470902B2 (en) | 2004-12-01 | 2013-06-25 | Fushimi Pharmaceutical Company, Limited | Continuous pore elastomer and process for producing the same, and water-absorbing roller and swab |
| JP2018039862A (en) * | 2016-09-05 | 2018-03-15 | 名古屋市 | Manufacturing method of tilt porous resin molded body and resin composition used therefor |
| JP2020100733A (en) * | 2018-12-21 | 2020-07-02 | ブリヂストンスポーツ株式会社 | Foam composition, foam member and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0555545B2 (en) | 1993-08-17 |
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