C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/182, 260/335
C08G 18/02 (2006.01) C07D 229/00 (2006.01) C07D 251/34 (2006.01) C08G 18/06 (2006.01) C08G 18/08 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01)
Patent
CA 2033741
Mo3523 LeA 27,369 POLYISOCYANATE MIXTURES, PROCESSES FOR THEIR PRODUCTION AND THEIR USE AS BINDERS FOR COATING COMPOSITIONS OR AS REACTANTS FOR COMPOUNDS REACTIVE TO ISOCYANATE GROUPS OR CARBOXYL GROUPS ABSTRACT OF THE DISCLOSURE The present invention relates to polyisocyanate mixtures having a) an average NCO functionality of 1.5 to 4.0, b) a content of (cyclo)aliphatically bound isocyanate groups (calculated as NCO, MW 42) of 2 to 40% by weight, c) a content of chemically incorporated carboxyl groups (calculated as COOH, MW 45) of 0.01 to 15% by weight and d) a content of (cyclo)aliphatically bound uretdione groups (calculated as C2N2O2, MW 84) of 1 to 23% by weight. The present invention also relates to processes for the production of these polyisocyanate mixtures and to their use, optionally after at least partial neutralization with tertiary amines, as binders for coating compositions which may be crosslinked under the effect of moisture and/or heat and as reactants for compounds containing isocyanate- and/or carboxyl-reactive groups in the production of high molecular weight plastics. Mo3523
Kubitza Werner
Laas Hans-Josef
Mosbach Jurgen
Aktiengesellschaft Bayer
Kubitza Werner
Laas Hans-Josef
Mosbach Jurgen
Swabey Ogilvy Renault
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