Lignin-containing isocyanate prepolymer mixtures, their...

Details Lignin-containing isocyanate prepolymer mixtures, their... Lignin-containing isocyanate prepolymer mixtures, their...

C - Chemistry, Metallurgy

08

G

C08G 18/64 (2006.01) C08G 18/12 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01) C08G 18/79 (2006.01) C08J 9/12 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2164490

Lignin-containing isocyanante prepolymer mixtures are obtainable by reacting (b1) diphenylmethane 4,4'-, 2,4'- and 2,2'-diisocyanate, an isomer mixture of diphenylmethane 4,4'- and 2,4'- or 4,4'-, 2,4'- and 2,2'- diisocyanates or a mixture of diphenylmethane diisocyan- ates and polyphenyl-polymethylene polyisocyanates with a suspension (b2) comprising at least one polyoxyalkylene glycol (b2i) having a molecular weight of from 400 to 6000, preferably from 1000 to 3000, selected from the group of polyoxypropylene glycols, polyoxypropylene- polyoxyethylene glycols and mixtures thereof, and lignin (b2ii).

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