JP2017535623A - 噴霧可能なポリウレタンコーティング - Google Patents
噴霧可能なポリウレタンコーティング Download PDFInfo
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Abstract
Description
(1)組成物の粘度が噴霧可能になるほど十分に低減されるが、なおも効果的な保護コーティングを形成するための硬化性があるような、噴霧可能及び硬化性組成物。
(2)エポキシ由来カルダノール変性エポキシポリオールは、例えば架橋ネットワークを形成することにより、硬化された生成物に良好な機械的性能及び熱抵抗性を付与し得る。良好な機械的性能により、得られたコーティング/層が、酸性溶液中への一週間の水浸後、100%超であるである引張り強度の保持力及び5%超である伸長率の保持力を有する(例えば、典型的な実施形態において90%超)ことを意味し得る。典型的な実施形態において、伸長率の保持力は低い場合があるが、初期の引張り強度(例えば、4000psi超)及び水浸後の引張り強度(例えば、5500psi超)は、コーティングが良好な機械的性能に関して著しい利点をなおも提供するのに十分に高い場合がある。
噴霧可能なポリウレタンコーティングの形成に関して(例えば、熱硬化性及び/または熱可塑性システムが使用され得る)、噴霧可能なポリウレタンシステムは、イソシアネート部分(NCO)とヒドロキシル部分(OH)などのイソシアネート反応性基との反応により形成されたポリウレタン基を含む。ポリウレタンシステムは、イソシアネート構成成分及びイソシアネート反応性構成成分を有する混合物、ならびに/またはイソシアネート末端プレポリマーの形態であるこれらの反応生成物を含む。噴霧可能なポリウレタンシステムは、ポリウレタンシステムを形成する個別の構成成分が構成成分を噴霧する直前、構成成分を噴霧する間、1つの構成成分が噴霧された後で、かつ別の構成成分を噴霧する間、及び/またはこれらの組み合わせで、コーティングを形成するための組成物中に組み込まれ得るようにコーティングを形成するための組成物中に組み込まれる事前に作製される反応生成物であり得る。
CMEポリオールは、エポキシ構成成分及びエポキシ反応性構成成分を含む混合物の反応生成物である。エポキシ反応性構成成分は、カルダノール構成成分を含む(かつ、任意のフェノールまたはフェノール誘導体構成成分を含み得る)。エポキシ反応性構成成分は、エポキシ構成成分中のエポキシ基と反応性である水素原子を有するフェノールを含む。エポキシ反応性構成成分は、エポキシ反応性構成成分の総重量に基づいて、少なくとも50重量%(例えば、少なくとも60重量%、少なくとも70重量%、少なくとも80重量%、少なくとも90重量%、及び/または100重量%)のカルダノール構成成分を含み得る。残りのエポキシ反応性構成成分は、フェノールもしくはフェノール誘導体構成成分、及び/または添加剤構成成分であり得る。エポキシ構成成分及び/またはエポキシ反応性構成成分は、(例えば、硬化剤、触媒、界面活性剤、可塑剤、充填剤、溶媒、鎖延長剤、及び/または架橋剤などの添加剤を含み得る)添加剤構成成分を含み得る。エポキシ構成成分中のエポキシ基の、エポキシ反応性構成成分中のエポキシ反応性基に対する比率は、1:0.95〜1:5(例えば、1:0.95〜1:4、1:0.95〜1:3、1:0.95〜1:2、1:0.95〜1:1.5など)であり得る。典型的な実施形態によると、過剰なエポキシ反応性構成成分が使用され得、例えばその比率は、1:1.01〜1:5、1:1.05〜1:3、1:1.5〜1:2.5、1:2〜1:3など)であり得る。
噴霧可能なポリウレタンコーティングは、大型工業用容器(例えば、10,000ガロン超を収容する工業用容器)のための保護コーティングとして、容器が保護コーティングで覆われるように使用され得、これは、研磨性及び/または腐食性材料を収容するためにしばしば使用される。例えば、油及びガス業界において、フラックタンクなどの大型工業用容器が、水圧破砕流体を保管し、井戸地に及び井戸地から輸送するのに有用である。水圧破砕流体はトルエン及びキシレンなどの塩酸及び毒性溶媒などの腐食性材料を含み得るため、漏出の可能性を低減及び/または最小限に抑えるために、フラックタンク(例えば、内部)は、保護コーティングで覆われる。容器の大きな表面領域に因り、大きな表面領域上に噴霧可能であり、かつ化学的抵抗性を付与する保護コーティングが、大型工業用容器の表面上で使用するために求められる。
プラークを、上で考察される実施例1及び2を使用して、ならびに以下で考察される比較配合物A及びBを使用して調製する。
等式(A):引張り強度の変化率=100−[(初期の引張り強度−最終の引張り強度)/(初期の引張り強度)]*100であるが、
初期の引張り強度マイナス最終の引張り強度は、絶対値である。
等式(B):伸長度の変化率=100−[(初期の伸長度−最終の伸長度)/(初期の伸長度)]*100であるが、
初期の伸長度マイナス最終の伸長度は、絶対値である。
Claims (8)
- イソシアネート構成成分及びイソシアネート反応性構成成分の反応生成物を含む噴霧可能なポリウレタンコーティングであって、
前記イソシアネート構成成分は、イソシアネートを含み、
前記イソシアネート反応性構成成分は、カルダノール変性エポキシポリオールを含み、前記カルダノール変性エポキシポリオールは、1:0.95〜1:5のエポキシ基のエポキシ反応性基に対する比率でのエポキシ構成成分及びエポキシ反応性構成成分の反応生成物であり、前記エポキシ反応性構成成分は、カルダノール構成成分を含む、噴霧可能なポリウレタンコーティング。 - 前記カルダノール構成成分が、前記カルダノール構成成分の総重量に基づいて、少なくとも50重量%のカルダノール含有量を有する、請求項1に記載の噴霧可能なポリウレタンコーティング。
- 前記カルダノール構成成分が、カシューナッツ殻液である、請求項2に記載の噴霧可能なポリウレタンコーティング。
- 前記イソシアネート構成成分及び前記イソシアネート反応性構成成分の前記反応生成物が、2重量%〜23重量%のイソシアネート部分含有量を有するイソシアネート末端プレポリマーである、請求項1〜3のいずれか一項に記載の噴霧可能なポリウレタンコーティング。
- 前記イソシアネート構成成分が、少なくとも1つのポリイソシアネート及び少なくとも1つの疎水性ポリオールの反応生成物であるイソシアネート末端プレポリマーを含む、請求項1〜3のいずれか一項に記載の噴霧可能なポリウレタンコーティング。
- 請求項1〜5のいずれか一項に記載の反応システムを含む工業用容器内の保護コーティングを形成するための、噴霧可能なポリウレタン系反応システム。
- 噴霧可能なポリウレタンコーティングを形成するための方法であって、
1:0.95〜1:5のエポキシ基のエポキシ反応性基に対する比率でのエポキシ構成成分及びエポキシ反応性構成成分の反応生成物であるカルダノール変性エポキシポリオールを提供することであり、前記エポキシ反応性構成成分が、カルダノール構成成分を含む、提供することと、
ポリイソシアネートを含むイソシアネート構成成分及び前記カルダノール変性エポキシポリオールを含むイソシアネート反応性構成成分を反応させることにより、ポリウレタン樹脂システムを調製することと、
表面上のコーティングとして前記ポリウレタン樹脂システムを噴霧することと、を含む、方法。 - ポリウレタン系コーティングを調製するための方法であって、
(A)ポリウレタン系組成物を調製することであり、前記調製が、
1:0.95〜1:5のエポキシ基のエポキシ反応性基に対する比率でのエポキシ構成成分及びエポキシ反応性構成成分の反応生成物であるカルダノール変性エポキシポリオールを提供することで、前記エポキシ反応性構成成分が、カルダノール構成成分を含む、提供すること、
ポリイソシアネートを含むイソシアネート構成成分及び前記カルダノール変性エポキシポリオールを含むイソシアネート反応性構成成分を混合することにより、ポリウレタン樹脂システムを調製すること、によって行われる、調製することと、
(A)前記ポリウレタン樹脂システムを硬化することと、を含む、方法。
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