Method of utilizing isocyanate linkage for forming multi-tier cascade polymers

Abstract

A method of synthesizing multitier 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.dbd.C.dbd.N--C(CH.sub.2 --R).sub.3 with R being selected from the group including: --(CH.sub.2).sub.n --CH.sub.2 --COOR' a) with R' being selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl- polycycloalkyl, adamantyl, n=0-10; --O--(CH.sub.2).sub.n --CH.sub.2 --COOR' --O--(CH.sub.2).sub.n --CH.sub.2 --CN b) 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 --CH.sub.2 --(CH.sub.2).sub.n --O--R" c) 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: ##STR1## wherein R"' is alkyl (C-1 to C-20), cycloalkyl (C-3-C-10), aryl, heteroaryl, polycycloalkyl, adamantyl.

Dependencies are inferred from the claim text.