C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 73/02 (2006.01) C07C 229/24 (2006.01) C08G 18/38 (2006.01) C08G 18/46 (2006.01) C08G 63/685 (2006.01) C08G 83/00 (2006.01) C09D 175/06 (2006.01) C09D 201/00 (2006.01) C09J 201/00 (2006.01)
Patent
CA 2172578
The present invention relates to hyperbranched polyaspartate esters containing repeating structural units corresponding to the formula I and/or II (I) Image The present invention also relates to a process for the preparation of these hyperbranched polyaspartate esters by self condensing, via a transesterification reaction, at least a portion of the hydroxy and ester groups of the hydroxy aspartates corresponding to the above formula at a temperature of 60 to 240°C to form hyperbranched polyaspartate esters and eliminating alcohols having the formula R1-OH and/or R2-OH.
Gindin Lyuba K.
Jonsson E. Haakan
Wicks Douglas A.
Yeske Philip E.
Corporation Bayer
Swabey Ogilvy Renault
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