C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/1324, 117/16
C08G 18/50 (2006.01) C08G 18/10 (2006.01) C09D 175/04 (2006.01)
Patent
CA 1142668
ABSTRACT OF THE DISCLOSURE This invention relates to compositions which are crosslinkable by heating to form polyurethane plastics for coating substrates, preferably textile sheet-firm materials, in particular by the reverse coating process. For ecological and economic reasons, the coating composi- tions are free from organic solvent or contain at most 10% by weight of organic solvent and consist essentially of linear and/or branched urethane prepolymers having blocked terminal NCO-groups, aqueous dispersions of urethane polymers, vinyl polymers and/or diene polymers and/or aqueous polymer solutions and aliphatic and/or cycloali- phatic and/or aromatic amines containing at least two primary and/or secondary amino groups as latent cross- linkers. The chain extending or crosslinking reaction takes place at an elevated temperature in a coating tunnel after the coating has been applied to a substrate.
323290
Berndt Gerhard
Konig Eberhard
Pedain Josef
Schroer Walter
Thoma Wilhelm
Aktiengesellschaft Bayer
Sherman
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