Carbamylbiuret-modified polyisocyanates

Details Carbamylbiuret-modified polyisocyanates Carbamylbiuret-modified polyisocyanates

C - Chemistry, Metallurgy

08

G

403/24, 260/257,

C08G 18/78 (2006.01) C07C 275/62 (2006.01) C07C 335/28 (2006.01) C07D 233/28 (2006.01) C08G 18/80 (2006.01)

Patent

CA 1139755

CARBAMYLBIURET-MODIFIED POLYISOCYANATES ABSTRACT OF THE DISCLOSURE A carbamylbiuret-modified polyisocynante of the formula: OCNR----- Image ----NCO wherein n is an integer of from about 1 to about 20; R is a divalent radical containing from about 1 to about 18 carbon atoms; and Y is a divalent radical selected from the group consisting of: (a) Image , (b) Image , (c) Image , (d) Image , (e) Image , (f) Image , and (g) Image , wherein D is selected from the group consisting of O, S, and NR; X, X', and X" are independently selceted from the group consisting of oxygen and sulfur; R2 and R3 are independently selected from the group consisting of aryl of from about 6 to about 18 carbon atoms, alkyl containing from about 1 to about 6 carbon atoms, and cycloalkyl containing from about 3 to about 7 carbon atoms, provided that each of R2 and R3 differs from R; and R4, R5, R6, and R7 are independently selected from the group consisting of hydrogen, alkyl containing from about 1 to about 6 carbon atoms, cycloalkyl containing from about 3 to about 7 carbon atoms, phenyl, and benzyl,

362515

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