Abstract:
본 발명은 팽창 흑연을 함유한 난연성 폴리우레탄-우레아 하이브리드 코팅제 조성물 및 이의 제조방법에 관한 것으로서, 더욱 상세하게는 건축물, 선박 및 해양구조물 내외부에 코팅하는 경우, 대상 구조 표면에 도막으로 형성된 후 화재 발생시 독성가스, 특히 검은 연기의 배출이 없고 화재가 발생해도 수초 내에 스스로의 자소성을 가지는 난연성 폴리우레탄-우레아 하이브리드 코팅제 조성물과 그 제조방법에 관한 것이다.
Abstract:
Polyurethane elastomers having solids contents greater than 40% by weight are produced from a sprayable polyurethane-forming system composed of an isocyanate component and an isocyanate-reactive component. The isocyanate component has a solids content of from 40 to 80 wt. %, based on total weight of isocyanate component and is made up of at least one aromatic polyisocyanate having an NCO content of from 24 to 33%, a functionality of from 2 to 3 and at least one solid filler. The isocyanate-reactive component has a solids content of from 40 to 80 wt. %, based on total weight of the isocyanate-reactive component and is composed of at least one polyether polyol having a hydroxyl number of from 25 to 40 and a functionality of from 2 to 4, and at least one solid filler.
Abstract:
The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane comprising a polyurethane polymer, a long-chain aldimine and at least one hardener which is an oxazolidine or another aldimine different from the long-chain aldimine. The membrane has a low viscosity at low solvent content and a good shelf life stability and cures fast to form a solid elastic material. The membrane is particularly suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor wheathering conditions in a broad temperature range.
Abstract:
The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane comprising a polyurethane polymer and two different aldimines as blocked amine hardeners in a specific ratio range. The membrane has a low odour, a long shelf life stability, a low viscosity at low solvent content, a sufficiently long open time to allow hand application and cures fast to a solid elastic material. The liquid-applied waterproofing membrane is particularly suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor wheathering conditions in a broad temperature range.
Abstract:
Die vorliegende Erfindung betrifft mehrkomponentige Zusammensetzungen, umfassend eine Isocyanat-Komponente und eine Amin-Komponente, wobei die Isocyanat-Komponente ein Präpolymer, erhältlich aus Toluylenisocyanat und einem Polytetramethylenpolyol, umfasst und die Amin-Komponente ein Dialkylthioaryldiamin und gegebenenfalls ein Polytetramethylenoxidpolyamin umfasst. Entsprechenden Zusammensetzungen können vorteilhaft als fließfähige oder streichbare Harzsysteme für die Herstellung von Oberflächenschutzschichten in Gießereianwendungen eingesetzt werden und zeichnen sich durch eine im Vergleich zu konventionellen auf Hexamethylendiisocyanat und Dimethylthiotolylendiamin basierenden Gießharzsystemen durch eine signifikant verbesserte Abriebbeständigkeit aus.
Abstract:
The present disclosure relates to a process for forming a layer of a coating composition on a substrate wherein the coating composition comprises a waterborne film forming polymer, an isocyanate and a melamine. The process involves forming a mixture of the waterborne film forming polymer and the isocyanate and allowing the mixture to mature before adding the melamine component. The result is a layer of the coating composition with a high degree of gloss and gassing resistance.
Abstract:
There is described a process for preparing an silane-functional oligomer (such as an alkoxysilane polyurethane) suitable for use as a crosslinkable coating component, the process comprising the steps of: 1) reacting an aminoalkyl silane with a cyclic carbonate, lactone or lactam to form a hydroxyl (OH) or imino (NH) functional silane intermediate, 2) reacting the silane intermediate from step 1) (optionally immediately without isolation) with a diisocyanate (diNCO) to form a silane functional polyurethane; where in step 2) the molar ratio of the total amount OH or NH groups on the silane intermediate of step 1) to the diisocyanate is from 1.8 to 2.2 (preferably about 2.0) and the resultant silane polymer is substantially-free of isocyanate groups thereon.