B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 13/16 (2006.01) A01N 25/28 (2006.01) B41M 5/165 (2006.01) C08G 18/08 (2006.01) C08G 18/38 (2006.01) C08K 9/10 (2006.01)
Patent
CA 2167346
Novel microcapsules are characterized in that their walls are made of reaction products of guanidine compounds and polyisocyanates or contain such reaction products. Dispersions containing such microcapsules can be prepared by replacing the amines, amino alcohols or hydrazine compounds in processes known per se for preparing microcapsule dispersions from polyisocyanates and amines, amino alcohols or hydrazine compounds by guanidine compounds. The present invention also relates to no-carbon copy papers containing dyestuff precursors in microcapsules whose walls are made of reaction products of guanidine compounds and polyisocyanates or contain such reaction products.
Nehen Ulrich
Weisser Juergen
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
Kemira Oyj
LandOfFree
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