JP3579741B2 - Foamed polyurethane aerosol composition - Google Patents
Foamed polyurethane aerosol composition Download PDFInfo
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- JP3579741B2 JP3579741B2 JP2000062645A JP2000062645A JP3579741B2 JP 3579741 B2 JP3579741 B2 JP 3579741B2 JP 2000062645 A JP2000062645 A JP 2000062645A JP 2000062645 A JP2000062645 A JP 2000062645A JP 3579741 B2 JP3579741 B2 JP 3579741B2
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- foamed polyurethane
- aerosol composition
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Description
【０００１】
【発明の属する技術分野】
本発明は、発泡ポリウレタンエアゾール組成物に関する。
【０００２】
【従来の技術】
発泡ポリウレタン樹脂は、ポリウレタン樹脂のもつ優れた耐摩耗性、耐薬品性、密着性などに加え、弾性に富み、断熱性、遮音性などの点で優れ、工場やビルの断熱材などとして広く用いられている。
この発泡ポリウレタン樹脂としては、大別してポリオールとポリイソシアナートとのニ成分硬化型と、プレポリマーを用いる一成分硬化型とがあるが、後者の方が使い勝手の点で優れている。
【０００３】
また、断熱材等における施工方法としては、ポンプなどにより噴射する方法もあるが、ウレタンプレポリマーと噴射剤とを含むエアゾール組成物を比較的小型の耐圧容器に充填し、これを噴射してポリウレタン発泡体を形成する、簡易型のエアゾール製品を用いる方法が小規模の工事には便利である。本発明は、このようなエアゾール製品への充填に好適なエアゾール組成物に関する。
【０００４】
一液型の発泡ポリウレタンエアゾール組成物は、基本的にはウレタンプレポリマーと噴射剤とから構成されており、従来は特開平４−１４５１４０号公報の様に、噴射剤としてモノクロロジフルオロメタン、モノクロロジフルオロエタン、テトラフルオロエタン等を単独あるいは混合する方法またはジメチルエーテル、プロパン、イソブタン等に混合する方法が用いられてきた。
しかし、これらのフロン類は大気中に放出されると地球温暖化またはオゾン層破壊の原因となることが問題視されている。したがって、これらフロン類以外を噴射剤として用いる簡易型の発泡ポリウレタンエアゾール製品の開発が望まれていた。
【０００５】
【発明が解決しようとする課題】
本発明は、フロン類を使用せず地球温暖化及びオゾン層を破壊しない等の環境破壊問題に対応した非フロン型の一液型発泡ポリウレタンエアゾール組成物を提供するものである。
【０００６】
【課題を解決するための手段】
本発明のポリウレタンエアゾール組成物は、以下の（ａ）成分および（ｂ）成分を含有することを特徴とする。
（ａ）ウレタンプレポリマー：４０〜９９重量部
および
（ｂ）沸点範囲が１０〜１００℃の高沸点炭化水素溶剤１種以上と、ジメチールエーテル、メタン、エタン、プロパン、ノルマルブタン、イソブタン、炭酸ガス、窒素から選ばれる１種以上との混合物からなる高沸点炭化水素溶剤含有噴射剤：１〜６０重量部。
【０００７】
【発明の実施の形態】
以下、本発明についてさらに詳細に説明する。
（ａ）成分のウレタンプレポリマーは、噴射剤により泡を含んで噴射されて硬化し、発泡ポリウレタン樹脂からなる塗膜を形成するものである。
ウレタンプレポリマーの種類は特に限定されないが、ポリオールと過剰のポリイソシアナートとの反応で得られたプレポリマーなどが用いられる。このプレポリマーは、構造末端にイソシアナート基が残っており、空気中の水分と反応して樹脂を形成する。
【０００８】
（ｂ）成分のうち、沸点範囲が１０〜１００℃の高沸点炭化水素溶剤としては、イソペンタン、シクロペンタン、ノルマルペンタン、ノルマルヘキサン、イソヘキサン、シクロヘキサン、ノルマルヘプタン等が挙げられ、１種または２種以上を適宜選択する。
（ｂ）成分の噴射剤には、前記高沸点炭化水素溶剤に加えて、ジメチルエーテル、メタン、エタン、プロパン、ノルマルブタン、イソブタン、炭酸ガスおよび窒素から選ばれる１種または２種以上を組み合わせた混合物を配合する。
【０００９】
（ａ）成分のウレタンプレポリマーは、エアゾール組成物中に４０〜９９重量部、好ましくは５０〜９０重量部配合される。
また、（ｂ）成分の高沸点炭化水素溶剤含有噴射剤は、エアゾール組成物中に１〜６０重量部、好ましくは１０〜５０重量部配合される。
（ｂ）成分において、高沸点炭化水素溶剤とジメチルエーテル等の他の噴射剤成分の比率は１／９９〜３０／７０が好適であり、好ましくは３／９７〜２０／８０である。
【００１０】
本発明のエアゾール組成物中には、上記（ａ），（ｂ）成分に加え、難燃剤等の改質剤、顔料等の着色剤などを配合することができる。難燃剤等の配合成分は、ウレタンプレポリマーの製造時、あるいはエアゾール組成物の充填時などに配合することができる。
本発明の噴射剤組成物をエアゾール容器などの耐圧容器に充填することにより、簡易型の発泡ポリウレタンエアゾール製品が得られる。このエアゾール製品の容器内圧力は２５℃で０．２０〜０．７４ＭＰａ程度が好適である。
【００１１】
【発明の効果】
本発明によれば、ウレタンプレポリマーを含む一液型の発泡ポリウレタンエアゾール組成物において、沸点範囲が１０〜１００℃の高沸点炭化水素溶剤を含む特定の噴射剤を用いることにより、地球環境への悪影響が防止され、しかも、適度な発泡倍率と強度を備えた発泡ポリウレタン樹脂塗膜が形成される。
【００１２】
【実施例】
本発明の発泡ポリウレタンエアゾール組成物を製造するには、一般的に下記の２方法が用いられる。
（１） 合成したウレタンプレポリマーを容器に充填する方法
グリセリンにポリプロピレンオキサイドを付加した分子量１０００ポリエーテルポリオール１００重量部にポリメリックジフェニルメタンジイソシアナート（三井化学株式会社製、ＭＤＩ−ＣＲ）２２０重量部、難燃剤としてトリス（β−クロロエチル）フォスフェ−ト６０重量部、および整泡剤としてシロキサンオキシアルキレンコポリマー３重量部を混合し、７０℃で１時間反応させ、２００００ｃｐｓ（２５℃）の黒褐色のウレタンプレポリマーを合成した。
このウレタンポリマー１００重量部にテトラメチルへキサンジアミン０．２重量部を添加して原液とした。後記表１に示した各組成の噴射剤と上記原液とを全体で１００重量部となるように耐圧容器に充填し、噴射ノズルを付けて密封してエアゾール製品を調製した。
【００１３】
（２） エアゾール耐圧容器内でウレタンプレポリマーを作製する方法。
予め難燃剤、整泡剤、触媒等の添加剤を混合したポリエーテルポリオールを耐圧容器に充填し、続いてポリメリックジフェニルメタンジイソシアナート、噴射剤の順に充填した後、ポリエーテルポリオールとポリメリックジフェニルメタンジイソシアナートの反応によりウレタンプレポリマーを合成し、噴射ノズルを付けて密封してエアゾール製品を調製した。
【００１４】
後記表１の実施例Ｎｏ．１のエアゾール組成物を温度２４℃、湿度５０％の室内で、ノズルを通して壁面に噴射させたところ、シェービングクリーム状の発泡体が噴出された。そのまま放置したところ、発泡体の表面のベタツキは約１２分後に無くなった。さらに一昼夜放置したところ、内部まで硬く、密度が約２５ｋｇ／ｍ２の硬質ポリウレタンフォームからなる塗膜が形成された。
噴射剤組成物を変化させ、実施例Ｎｏ．２〜９のエアゾール組成物を同様にノズルから噴出させたところ、同様にシェービングクリーム状の発泡体が噴出され、短時間後に発泡体表面のベタツキが無くなった。さらに一昼夜放置したところ、同様に内部まで硬い密度２０〜３０ｋｇ／ｍ２程度の硬質ポリウレタンフォームからなる塗膜が得られた。
【００１５】
【表１】
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a foamed polyurethane aerosol composition.
[0002]
[Prior art]
Foamed polyurethane resin has excellent elasticity, heat insulation, sound insulation, etc. in addition to the excellent wear resistance, chemical resistance, adhesion, etc. of polyurethane resin, and is widely used as a heat insulator for factories and buildings. Have been.
The foamed polyurethane resin is roughly classified into a two-component curing type of a polyol and a polyisocyanate, and a one-component curing type using a prepolymer. The latter is more excellent in usability.
[0003]
In addition, as a method of applying the heat insulating material or the like, there is a method of injecting with a pump or the like. The method of using a simple aerosol product that forms a foam is convenient for small-scale construction. The present invention relates to an aerosol composition suitable for filling such an aerosol product.
[0004]
The one-pack type foamed polyurethane aerosol composition is basically composed of a urethane prepolymer and a propellant. , Tetrafluoroethane, etc., alone or in admixture or in dimethyl ether, propane, isobutane, etc.
However, it is considered that these fluorocarbons, when released into the atmosphere, cause global warming or ozone layer depletion. Therefore, development of a simplified foamed polyurethane aerosol product using a propellant other than these fluorocarbons has been desired.
[0005]
[Problems to be solved by the invention]
The present invention provides a non-fluorocarbon type one-pack type foamed polyurethane aerosol composition which does not use fluorocarbons and does not destroy the environment such as global warming and the ozone layer.
[0006]
[Means for Solving the Problems]
The polyurethane aerosol composition of the present invention is characterized by containing the following components (a) and (b).
(A) urethane prepolymer: 40 to 99 parts by weight and (b) one or more high-boiling hydrocarbon solvents having a boiling range of 10 to 100 ° C., dimethyl ether, methane, ethane, propane, normal butane, isobutane, carbonic acid High-boiling hydrocarbon solvent-containing propellant comprising a mixture with at least one selected from gas and nitrogen : 1 to 60 parts by weight.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail.
The urethane prepolymer of the component (a) is sprayed while containing bubbles by a propellant and cured to form a coating film made of a foamed polyurethane resin.
The type of the urethane prepolymer is not particularly limited, but a prepolymer obtained by reacting a polyol with an excess of a polyisocyanate is used. This prepolymer has an isocyanate group remaining at the structural end and reacts with moisture in the air to form a resin.
[0008]
Among the components (b) , examples of the high boiling point hydrocarbon solvent having a boiling point range of 10 to 100 ° C. include isopentane, cyclopentane, normal pentane, normal hexane, isohexane, cyclohexane, normal heptane, and the like. The above is appropriately selected.
The propellant of the component (b) may be a mixture of one or more selected from dimethyl ether, methane, ethane, propane, normal butane, isobutane, carbon dioxide and nitrogen, in addition to the high boiling point hydrocarbon solvent . Is blended.
[0009]
The urethane prepolymer of the component (a) is mixed in the aerosol composition in an amount of 40 to 99 parts by weight, preferably 50 to 90 parts by weight.
The propellant containing the high boiling point hydrocarbon solvent as the component (b) is blended in the aerosol composition in an amount of 1 to 60 parts by weight, preferably 10 to 50 parts by weight.
In the component (b), the ratio of the high-boiling hydrocarbon solvent to other propellant components such as dimethyl ether is preferably from 1/99 to 30/70, and more preferably from 3/97 to 20/80.
[0010]
In addition to the components (a) and (b), a modifying agent such as a flame retardant, a coloring agent such as a pigment, and the like can be added to the aerosol composition of the present invention. The compounding components such as the flame retardant can be compounded at the time of producing the urethane prepolymer or at the time of filling the aerosol composition.
By filling the propellant composition of the present invention into a pressure-resistant container such as an aerosol container, a simplified foamed polyurethane aerosol product can be obtained. The pressure in the container of this aerosol product is preferably about 0.20 to 0.74 MPa at 25 ° C.
[0011]
【The invention's effect】
According to the present invention, in a one-pack type foamed polyurethane aerosol composition containing a urethane prepolymer, by using a specific propellant containing a high-boiling hydrocarbon solvent having a boiling range of 10 to 100 ° C, it is possible to reduce the environmental impact on the global environment. An adverse effect is prevented, and a foamed polyurethane resin coating film having an appropriate foaming ratio and strength is formed.
[0012]
【Example】
In order to produce the foamed polyurethane aerosol composition of the present invention, the following two methods are generally used.
(1) Method of filling the synthesized urethane prepolymer into a container 220 parts by weight of polymeric diphenylmethane diisocyanate (MDI-CR, manufactured by Mitsui Chemicals, Inc.) in 100 parts by weight of a polyether polyol having a molecular weight of 1,000 in which propylene is added to glycerin, A mixture of 60 parts by weight of tris (β-chloroethyl) phosphate as a flame retardant and 3 parts by weight of a siloxaneoxyalkylene copolymer as a foam stabilizer was reacted at 70 ° C. for 1 hour, and was subjected to 20,000 cps (25 ° C.) black-brown urethane prepolymer. The polymer was synthesized.
To 100 parts by weight of the urethane polymer was added 0.2 parts by weight of tetramethylhexanediamine to prepare a stock solution. An aerosol product was prepared by filling a propellant of each composition shown in Table 1 below and the above stock solution into a pressure-resistant container so as to be 100 parts by weight in total, attaching a jet nozzle and sealing.
[0013]
(2) A method of producing a urethane prepolymer in an aerosol pressure vessel.
A polyether polyol in which additives such as a flame retardant, a foam stabilizer, and a catalyst are mixed in advance is filled in a pressure-resistant container, and then polymer diphenylmethane diisocyanate and a propellant are charged in this order, and then the polyether polyol and polymer diphenyl methane diisocyanate are filled. The urethane prepolymer was synthesized by the reaction of Nart, attached with an injection nozzle and sealed to prepare an aerosol product.
[0014]
Example No. 1 in Table 1 below. When the aerosol composition No. 1 was sprayed on a wall surface through a nozzle in a room at a temperature of 24 ° C. and a humidity of 50%, a foam in the form of a shaving cream was sprayed. When left as it was, stickiness on the surface of the foam disappeared after about 12 minutes. Further, when left for one day, a coating film made of a rigid polyurethane foam having a hardness of about 25 kg / m 2 was formed.
The propellant composition was varied and When the aerosol compositions of Nos. 2 to 9 were similarly ejected from the nozzle, the shaving cream-like foam was similarly ejected, and after a short time, the stickiness of the foam surface was eliminated. Further, when the mixture was allowed to stand for one day, a coating film of a hard polyurethane foam having a hard density of about 20 to 30 kg / m 2 was obtained.
[0015]
[Table 1]
Claims (3)
および
（ｂ）沸点範囲が１０〜１００℃の高沸点炭化水素溶剤１種以上と、ジメチールエーテル、メタン、エタン、プロパン、ノルマルブタン、イソブタン、炭酸ガス、窒素から選ばれる１種以上との混合物からなる高沸点炭化水素溶剤含有噴射剤：１〜６０重量部
を含有することを特徴とする発泡ポリウレタンエアゾール組成物。(A) urethane prepolymer: 40 to 99 parts by weight and (b) one or more high-boiling hydrocarbon solvents having a boiling range of 10 to 100 ° C., dimethyl ether, methane, ethane, propane, normal butane, isobutane, carbonic acid A high-boiling hydrocarbon solvent-containing propellant comprising a mixture of at least one selected from gas and nitrogen : a foamed polyurethane aerosol composition containing 1 to 60 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000062645A JP3579741B2 (en) | 2000-03-07 | 2000-03-07 | Foamed polyurethane aerosol composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000062645A JP3579741B2 (en) | 2000-03-07 | 2000-03-07 | Foamed polyurethane aerosol composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001247641A JP2001247641A (en) | 2001-09-11 |
| JP3579741B2 true JP3579741B2 (en) | 2004-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000062645A Expired - Fee Related JP3579741B2 (en) | 2000-03-07 | 2000-03-07 | Foamed polyurethane aerosol composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3579741B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5027722B2 (en) * | 2008-04-15 | 2012-09-19 | 三井化学産資株式会社 | One-part soft foam polyurethane aerosol composition |
-
2000
- 2000-03-07 JP JP2000062645A patent/JP3579741B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001247641A (en) | 2001-09-11 |
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