Reaction mixture and process for producing polyisocyanate...

Details Reaction mixture and process for producing polyisocyanate... Reaction mixture and process for producing polyisocyanate...

C - Chemistry, Metallurgy

08

G

C08G 18/73 (2006.01) C08G 18/09 (2006.01) C08G 18/48 (2006.01) C08G 18/65 (2006.01) C08G 18/66 (2006.01) C08G 18/67 (2006.01) C08G 18/75 (2006.01)

Patent

CA 2254231

A reaction mixture comprises (a) isocyanates, (b) compounds which are reactive toward isocyanates and have a mean functionality of from 1.8 to 2.5 and a molecular weight of from 500 to 8000 g/mol and, if desired, (c) chain extenders having a molecular weight of less than 500 g/mol, (d) catalysts and/or (e) customary auxiliaries and/or additives, wherein the isocyanates (a) comprise aliphatic and/or cycloaliphatic isocyanates and the ratio of the isocyanate groups present in (a) to the isocyanate-reactive groups present in (b) plus, if used, (c) is from 1 : 0.98 to 1 : 0.8.

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