C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/154
C08G 18/32 (2006.01) C08G 18/71 (2006.01) C08G 18/77 (2006.01)
Patent
CA 2015040
TWO-COMPONENT COMPOSITIONS AND COATINGS AND SEALANTS PRODUCED THEREFROM ABSTRACT OF THE DISCLOSURE The present invention relates to two-component coating or sealing compositions which contain a) a polyisocyanate component and b) a reactive component consisting of at least one compound containing at least two isocyanate reactive groups which are optionally reversibly blocked in quantities corresponding to an equivalent ratio of isocyanate groups to free and blocked isocyanate reactive groups of about 0.8:1 to 10:1 characterized in that polyisocyanate component a) is based on compounds corresponding to the formula A-[O-CO-B-NCO]n wherein n is an integer of 2 or greater, A is an n-valent organic group obtained by removing the hydroxyl groups from an n-valent organic polyhydroxyl compound having a molecular weight of 400 to about 20,000, such compound being inert to isocyanate groups at room temperature with the exception of its hydroxyl groups and B is an aliphatic, cycloaliphatic or aromatic hydrocarbon group optionally having substituents which are inert to the reactive groups present in the compositions. The present invention also relates to coatings or sealants prepared from these two-component compositions.
Hentschel Karl-Heinz
Nachtkamp Klaus
Pedain Josef
Schmalstieg Lutz
Aktiengesellschaft Bayer
Hentschel Karl-Heinz
Nachtkamp Klaus
Pedain Josef
Schmalstieg Lutz
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