Silane-modified urea derivatives, method for the production...

C - Chemistry – Metallurgy – 08 – G

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C08G 18/28 (2006.01) C08K 5/5419 (2006.01) C08K 5/544 (2006.01) C08K 5/548 (2006.01)

Patent

CA 2610784

Disclosed are silane-modified urea derivatives which can be produced by reacting diisocyanates with aminosilanes, hydroxylsilanes, or mercaptosilanes. The inventive silane-modified urea derivatives are suitable especially for use as auxiliary rheological agents, preferably as thixotropic agents for silane- crosslinking systems, particularly for single-component and two-component adhesives and sealants, paints, lacquers, and coatings while causing substantially no increase in viscosity, not being subject to discoloring, being reactive, and positively influencing mechanics.

L'invention concerne des dérivés de carbamide modifiés par du silane pouvant être obtenus en faisant réagir des diisocyanates avec des amino-, hydroxyle- ou mercaptosilanes. Les dérivés de carbamide modifiés par du silane sont adaptés notamment à une utilisation en tant qu'agents auxiliaires, de préférence, agents thixotropes pour les systèmes à réticulation de silane, notamment pour des substances adhésives et d'étanchéité, des peintures, des vernis et des revêtements à une composante et à deux composantes et n'entraînent sensiblement aucune augmentation de viscosité, ne décolorent pas, sont réactifs et ont une action positive sur la mécanique.

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