C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 24/12 (2006.01) C04B 24/28 (2006.01) C04B 28/00 (2006.01) C08G 18/28 (2006.01) C08G 18/70 (2006.01)
Patent
CA 2224956
The present invention relates to a process for preparing mortar/concrete compositions by incorporating into the mortar/concrete compositions either before or during the mixing operation a water-dispersible polyisocyanate which a) has an average isocyanate functionality of 1.8 to 4.0, b) contains 4.0 to 25.0 wt.% of aliphatically and/or cycloaliphatically bound isocyanate groups (calculated as NCO; molecular weight = 42) and c) contains 5 to 80 wt.% of ethylene oxide units present within polyether chains (calculated as C2H4O; molecular weight = 44), in which d) the polyether chains contain an average of 5 to 50 ethylene oxide units.
Bottger Karl-Georg
Brahm Martin
Knofel Dietbert
Kober Hermann
Laas Hans-Josef
Aktiengesellschaft Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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