Dendrimer compositions with high branching multiplicity

Details Dendrimer compositions with high branching multiplicity Dendrimer compositions with high branching multiplicity

2006-03-01

2009-11-17

Gulakowski, Randy (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C528S289000, C528S363000, C525S425000, C525S437000, C525S447000, C977S754000

Reexamination Certificate

active

07619054

ABSTRACT:
Dendrimeric compounds and polymers are also provided wherein the dendrimer core is derived from the Michael reaction products. The branching pattern of the core and the multiplicity of the Michael addition lead to flexibility in designing and synthesizing dendrimeric materials.The Michael addition products are from a reaction between primary amines and activated α,β-unsaturated compounds exemplified by diethyl methylenemalonate (DEMM). In various embodiments, the reaction proceeds with high yields in the absence of strong base or Lewis acid catalyst under mild reaction conditions. Depending on the state of steric hindrance in the amine, the reaction products are a double Michael addition product or a so-called vicarious Michael addition reaction product.

REFERENCES:
patent: 5530092 (1996-06-01), Meijer et al.
patent: 6521716 (2003-02-01), Leake

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