| 摘要 |
A method of synthesizing multi-tier cascade polymers and the polymers made thereby are formed by reacting at least one tier of a polymer with a functionalized isocyanate having the following formula:O=C=N-C(CH2-R)3with R being selected from the group including: a) -(CH2)n-CH2-COOR'with R' being selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl-polycycloalkyl, adamantyl, n=0-10; b) -O-(CH2)n-CH2 COOR'c) -O-(CH2)n-CH2-CN with R' being selected from the group consisting of alkyl (C-1 to C-20), cycloalkyl (C-3 to C-10), aryl, heteroaryl, polycycloalkyl, adamantyl, n=0-10; and d) -CH2-(CH2)n-O-R''with n=0-10, R'' being selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl ester functionality, and a sulphur or a silicon atom bearing substituents selected from the group including: <IMAGE> -SO2-R''', -SiR'''3 -(CH2 )n-CH2-CN, -(CH2 )n-CH2-COOR'''wherein R''' is alkyl (C-1 to C-20), cycloalkyl (C-3-C-10), aryl, heteroaryl, polycycloalkyl, adamantyl, n=1-10. |
