JPH01103661A - Water-absorptive polyurethane composition - Google Patents
Water-absorptive polyurethane compositionInfo
- Publication number
- JPH01103661A JPH01103661A JP62260528A JP26052887A JPH01103661A JP H01103661 A JPH01103661 A JP H01103661A JP 62260528 A JP62260528 A JP 62260528A JP 26052887 A JP26052887 A JP 26052887A JP H01103661 A JPH01103661 A JP H01103661A
- Authority
- JP
- Japan
- Prior art keywords
- water
- polyurethane composition
- nonionic surfactant
- polyalkylene oxide
- super absorbent
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は吸水性を付与したポリウレタン組成物に関する
ものであり、該ポリウレタン組成物は、建築物・各種機
械類及び電線ケーブル等の止水材・トンネル用セグメン
トのシーリング材・農園芸用保水材・アルミサツシの止
水材・ウェザ−ストリップ・汚泥の脱水材・蓄電池等の
保液材・結露防止材・玩具等に使用することができるも
のである。Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a polyurethane composition imparted with water absorption properties, and the polyurethane composition can be used to stop water in buildings, various types of machinery, electric wires, cables, etc. Can be used for sealing materials for tunnel segments, water retention materials for agriculture and horticulture, water stop materials for aluminum sash, weather strips, sludge dehydration materials, liquid retention materials for storage batteries, dew condensation prevention materials, toys, etc. It is.
(ロ)従来技術
従来、水膨潤性のシーリング材等としては、ゴム又は合
成樹脂に高吸水性樹脂を混合したもの、又は水膨潤性ウ
レタン等が知られていたのである。(B) Prior Art Conventionally, as water-swellable sealants, etc., mixtures of rubber or synthetic resins with highly water-absorbing resins, water-swellable urethanes, etc. have been known.
しかしこれらは、いずれも水による膨潤速度が遅く、−
殻内に2〜7日後において最大の膨潤倍率が2〜40倍
になるものであった。However, all of these have a slow swelling rate with water and -
The maximum swelling ratio was 2 to 40 times after 2 to 7 days in the shell.
故に、急速に吸水させたり、あるいは急速に止水を要求
される用途には満足できるものではなかったのである。Therefore, it was not satisfactory for applications requiring rapid water absorption or rapid water stopping.
発明者は、従来技術の欠点を解決するために、すでに特
願昭62−49597号公報を提案した。しかし乍ら、
アルミサツシュの止水等、急速に止水を要求される用途
には十分でないことが判明した。The inventor has already proposed Japanese Patent Application No. 62-49597 in order to solve the drawbacks of the prior art. However,
It has been found that this is not sufficient for applications that require rapid water stopping, such as water stopping for aluminum sashes.
(ハ)発明が解決しようとする問題点
本発明は上記従来の欠点を解決するものであり、ノニオ
ン系の界面活性剤を高吸水性樹脂と、水膨潤性ウレタン
ポリマーに配合することによって従来より、外部からの
水の浸入を速やかにし、各種高級水性樹脂に含浸されて
直ちに膨潤が開始され、吸水速度が速く、かつ吸水初期
における膨潤倍率も高いポリウレタン組成物を得ること
を目的とするものである。(c) Problems to be solved by the invention The present invention solves the above-mentioned conventional drawbacks by blending a nonionic surfactant with a super absorbent resin and a water-swellable urethane polymer. The purpose is to obtain a polyurethane composition that quickly allows water to enter from the outside, starts swelling immediately after being impregnated with various high-grade water-based resins, has a high water absorption rate, and has a high swelling ratio at the initial stage of water absorption. be.
(ニ)問題を解決するための手段
本発明の目的は以上の如くであり、次に該目的を達成す
る為の構成を説明すると。(d) Means for Solving the Problems The objects of the present invention are as described above. Next, the configuration for achieving the objects will be explained.
本発明の吸水性を付与したポリウレタン組成物は、ポリ
アルキレンオキシドと有機ポリイソシアネートとを反応
させて得られる末端イソシアネート基含有ウレタンプレ
ポリマー、ノニオン系の界面活性剤、及び高吸水性樹脂
を必須成分として、これを硬化させたものであり、上記
問題点の解決を図ったもである。The water-absorbing polyurethane composition of the present invention contains as essential components a urethane prepolymer containing terminal isocyanate groups obtained by reacting a polyalkylene oxide and an organic polyisocyanate, a nonionic surfactant, and a superabsorbent resin. This is a cured version of the same, and is intended to solve the above-mentioned problems.
ここで末端イソシアネート基含有ウレタンプレポリマー
とは、一般に水膨潤性ウレタンポリマーとして知られて
いるもので、例えば大日本インキ工業製パンデックスT
P−654(、登録商標)として市販されているものが
ある。The urethane prepolymer containing a terminal isocyanate group is generally known as a water-swellable urethane polymer, such as Pandex T manufactured by Dainippon Ink Industries.
There is one commercially available as P-654 (registered trademark).
この水膨潤性ウレタンポリマーは上述したようにポリア
ルキレンオキシドと有機ポリイソシアナートを反応させ
て得られるが、ポリアルキレンオキシドとしては、ポリ
オキシエチレン、ポリオキシプロピレン、又はポリオキ
シエチレンキポリオキシプロピレンの混合物が好ましい
。This water-swellable urethane polymer is obtained by reacting a polyalkylene oxide with an organic polyisocyanate as described above. Mixtures are preferred.
ここで水膨潤性ウレタンポリマー:ノニオン系界面活性
剤:高吸水性樹脂の組成比率は、用途により異なるので
一定とできないが、好ましくは、99〜65wt%:0
.2〜25wt%:0.8〜l Qwt%である。Here, the composition ratio of water-swellable urethane polymer: nonionic surfactant: super absorbent resin varies depending on the application, so it cannot be fixed, but it is preferably 99 to 65 wt%: 0
.. 2 to 25 wt%: 0.8 to 1 Qwt%.
また、ノニオン系の界面活性剤としては、花王製エマル
ゲンPP−250(登録商標)等が市販されている。Moreover, as a nonionic surfactant, Emulgen PP-250 (registered trademark) manufactured by Kao and the like are commercially available.
また、高吸水性樹脂としては、たとえば従来より公知の
、
酢酸ビニ゛ルーアクリル酸エステル共重合体ケン化物、
イソブチレン−無水マレイン酸共重合変成物の架橋体、
架橋構造を有するポリアクリル酸く塩)デンプン−アク
リル酸(塩)共重合体、
等が具体例として挙げられるが、これに限定されるもの
ではない。In addition, examples of super-absorbent resins include conventionally known saponified vinyl acetate-acrylic acid ester copolymers, cross-linked isobutylene-maleic anhydride copolymer modified products, and polyacrylic acid salts having a cross-linked structure. ) starch-acrylic acid (salt) copolymer, etc. Specific examples include, but are not limited to.
前記高吸水性樹脂は単独でもよく、二種以上混合して用
いてもよいが、特に酢酸ビニル−アクリル酸エステル共
重合体ケン化物、イソブチレン−無水マレイン酸共重合
変成物の架橋体は耐久性に優れているので好ましい。The superabsorbent resins may be used alone or in a mixture of two or more types, but especially crosslinked products of saponified vinyl acetate-acrylic acid ester copolymer and modified isobutylene-maleic anhydride copolymer have excellent durability. It is preferable because it has excellent properties.
これら高吸水性樹脂は吸水量が20g/g以上、特に1
00 g/g以上のものが好ましく使用される。These super absorbent resins have a water absorption of 20 g/g or more, especially 1
00 g/g or more is preferably used.
また、高吸水性樹脂は粒径が小さいことが必要であり、
平均粒径が30μm以下であることがより好ましい。In addition, the superabsorbent resin needs to have a small particle size,
It is more preferable that the average particle size is 30 μm or less.
平均粒径が30μm以、上になると製品の強度が低下し
たり、吸水後に高吸水性樹脂の脱落が生じるため好まし
くないのである。If the average particle size is 30 μm or more, it is not preferable because the strength of the product decreases or the highly water-absorbent resin falls off after water absorption.
(ホ)発明の作用
ポリオキシエチレン、ポリオキシプロピレン及びその混
合物を主鎖とする末端イソシアネート化合物は、一般に
水膨潤性ウレタンポリマーとして知られているが、単独
または水膨潤性ウレタンポリマーに高吸水性樹脂を混合
したシーリング材等は公知である。(E) Function of the invention A terminal isocyanate compound having a main chain of polyoxyethylene, polyoxypropylene or a mixture thereof is generally known as a water-swellable urethane polymer, and has high water absorption properties either alone or as a water-swellable urethane polymer. Sealing materials containing resins are well known.
しかしながらこれらの吸水性組成物は前述したように、
吸水速度が遅いという欠点が有ったのである。However, as mentioned above, these water-absorbing compositions
The drawback was that the water absorption rate was slow.
本発明はこの欠点を解決するため、水膨潤性ウレタンポ
リマーと、ノニオン系の界面活性剤を配合すると、外部
からの水の浸入が速やかになり、各種高吸水性樹脂に含
浸されて、直ちに膨潤が開始されるのである。In order to solve this problem, the present invention combines a water-swellable urethane polymer with a nonionic surfactant, which allows water to enter from the outside quickly, impregnates various super absorbent resins, and immediately swells the polymer. is started.
このように水膨潤性ウレタンポリマー、ノニオン系の界
面活性剤、及び高吸水性樹脂を組み合わすことによって
、吸水速度が速く、かつ、膨潤倍率が高いポリウレタン
組成物を得ることができるのである。By combining a water-swellable urethane polymer, a nonionic surfactant, and a superabsorbent resin in this way, it is possible to obtain a polyurethane composition that has a high water absorption rate and a high swelling ratio.
(へ)実施例
以下実施例により、本発明を更に説明するが、本発明は
これに限定されるものではない。(f) Examples The present invention will be further explained with reference to Examples below, but the present invention is not limited thereto.
*実施例1〜6
表−1に示した配合により、ホモジナイザーを用いて2
分間攪拌し、厚さ約2011のポリエチレン製容器に移
し、室温で24時間発泡・硬化を行った。*Examples 1 to 6 Using a homogenizer, 2
The mixture was stirred for a minute, then transferred to a polyethylene container with a thickness of about 2011 mm, and foamed and cured at room temperature for 24 hours.
(注)
(1)、水膨潤性ウレタンポリマー:
大日本インキ工業製パンデックス
TP−654(登録商標)
(2)、ノニオン系界面活性剤:A
花王製エマルゲンPP−250(登録商標)(3)、ノ
ニオン系界面活性剤二B
花王製エマルゲン106(登録商標)
(4)、ノニオン系界面活性剤:C
花王製エマルゲン909 (登録商標)(5)、高吸水
製樹脂:
住友化学製スミカゲル5P−510(登録商標)上記配
合で得られたウレタンフオームを20鶴角に切り取り、
蒸留水に浸漬し、所定時間後の膨潤比率(体積)を求め
表−3に示した。(Note) (1) Water-swellable urethane polymer: Pandex TP-654 (registered trademark) manufactured by Dainippon Ink Industries (2) Nonionic surfactant: A Emulgen PP-250 (registered trademark) manufactured by Kao (3) ), Nonionic surfactant 2B Kao Emulgen 106 (registered trademark) (4), Nonionic surfactant: C Kao Emulgen 909 (registered trademark) (5), Super absorbent resin: Sumikagel 5P manufactured by Sumitomo Chemical -510 (registered trademark) The urethane foam obtained from the above formulation was cut into 20 square pieces,
It was immersed in distilled water, and the swelling ratio (volume) after a predetermined period of time was determined and shown in Table 3.
*比較例1〜2
次に表−2に示した配合により、実施例と同様な方法で
、比較例として本発明の組成と異なるウレタンフオーム
を作り、その膨潤比率(体積)を表−4に示した。*Comparative Examples 1 to 2 Next, a urethane foam having a composition different from that of the present invention was prepared as a comparative example using the formulation shown in Table 2 in the same manner as in the example, and its swelling ratio (volume) was shown in Table 4. Indicated.
表−2
(注)水膨潤性ウレタンポリマー、及び高吸水製樹脂は
、いずれも表−1で用いたものを使用した。Table 2 (Note) Both the water-swellable urethane polymer and super absorbent resin used in Table 1 were used.
表−3
表−4
(注) 膨潤後の体積
膨潤倍率=□
膨潤前の体積
(ト)発明の効果
本発明は以上のようなポリウレタン組成物よりなり、次
のような効果を奏するものである。Table-3 Table-4 (Note) Volume after swelling Swelling magnification = □ Volume before swelling (G) Effects of the invention The present invention is composed of the polyurethane composition as described above, and has the following effects. .
第1に、上述の如く得られた吸水性を付与したポリウレ
タン組成物は、従来の水膨潤性シーリング材に比較して
吸水速度が特に速く、かつ、吸水初期における膨潤倍率
も特に大きいのである。First, the water-absorbing polyurethane composition obtained as described above has a particularly high water absorption rate compared to conventional water-swellable sealants, and also has a particularly large swelling ratio at the initial stage of water absorption.
第2に、本発明のポリウレタン組成物は、形状を自由に
成形できるという性質を具備しているので、建築物・各
種機械類及び電線ケーブル等の止水材・トンネル用セグ
メントのシーリング材・農園芸用保水材・アルミミサソ
シの止木材・ウェザ−ストリップ・汚泥の脱水材・蓄電
池等の保液材・結露防止材・玩具等広範囲な用途に有効
に利用することができるのである。Secondly, the polyurethane composition of the present invention has the property of being able to be molded into any shape, so it can be used as a water-stopping material for buildings, various machinery, electric wires and cables, as a sealing material for tunnel segments, and as an agricultural material. It can be effectively used in a wide range of applications, including water retention materials for gardening, retaining materials for aluminum wrens, weather strips, sludge dehydration materials, liquid retention materials for storage batteries, dew condensation prevention materials, and toys.
Claims (3)
トとを反応させて得られる末端イソシアネート基含有ウ
レタンプレポリマー、ノニオン系界面活性剤、及び高吸
水性樹脂を必須成分とすることを特徴とする吸水性を付
与したポリウレタン組成物。(1) Provides water absorbency characterized by containing a urethane prepolymer containing terminal isocyanate groups obtained by reacting polyalkylene oxide and organic polyisocyanate, a nonionic surfactant, and a super absorbent resin as essential components. polyurethane composition.
トとを反応させて得られる末端イソシアネート基含有ウ
レタンプレポリマー:ノニオン系界面活性剤:高吸水性
樹脂の三者の組成比率を、99〜65wt%:0.2〜
25wt%:0.8〜15wt%としたことを特徴とす
る特許請求の範囲第1項記載の吸水性を付与したポリウ
レタン組成物。(2) The composition ratio of the terminal isocyanate group-containing urethane prepolymer obtained by reacting polyalkylene oxide and organic polyisocyanate: nonionic surfactant: super absorbent resin is 99 to 65 wt%:0. 2~
25 wt%: 0.8 to 15 wt% of the polyurethane composition imparted with water absorbency according to claim 1.
ポリオキシプロピレン、又はポリオキシエチレンとポリ
オキシプロピレンの混合物である特許請求の範囲第1項
記載の吸水性を付与したポリウレタン組成物。(3) Polyalkylene oxide is polyoxyethylene,
The water-absorbing polyurethane composition according to claim 1, which is polyoxypropylene or a mixture of polyoxyethylene and polyoxypropylene.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62260528A JPH01103661A (en) | 1987-10-15 | 1987-10-15 | Water-absorptive polyurethane composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62260528A JPH01103661A (en) | 1987-10-15 | 1987-10-15 | Water-absorptive polyurethane composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01103661A true JPH01103661A (en) | 1989-04-20 |
Family
ID=17349216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62260528A Pending JPH01103661A (en) | 1987-10-15 | 1987-10-15 | Water-absorptive polyurethane composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01103661A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57150958A (en) * | 1981-03-13 | 1982-09-17 | Uni Charm Corp | Body liquid treating article |
-
1987
- 1987-10-15 JP JP62260528A patent/JPH01103661A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57150958A (en) * | 1981-03-13 | 1982-09-17 | Uni Charm Corp | Body liquid treating article |
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