Tomalia (3) was the first to utilize Michael addition reactions to synthesize HB polymers.
5-7) Commercial ASPE-based diamines are derived from the Michael addition reaction between aliphatic diamines and diethyl maleate (DEM).
This is followed by the conjugate addition reaction
of this nucleophile (BTA9) with the electrophilic BMI to form BTA-[BMI.
Type I coagents are typically polar, multifunctional low molecular weight compounds which form very reactive radicals through addition reactions
These are produced by either addition reaction
of primary radicals to double bonds in NBR or hydrogen abstraction from methylene carbon atoms by primary radicals in HNBR.
Besides radical coupling, addition reactions
that were mentioned as the addition of radicals on double bonds in elastomer can also combine different chains.
The Formation of Csp2-S and Csp2-Se Bonds by Substitution and Addition Reactions
Catalyzed by Transition Metal Complexes.
Scorch time increases as unsaturation decreases (NBR < EPDM < CM), perhaps due to the relative efficiency of addition reactions
generating crosslink density compared to abstraction, as the polymer plays less of a role in the cure mechanism with increased saturation.
Alkenes in general are also known to undergo addition reactions
at lower temperatures.
Within Scientific Research, Nelson's topics have been: (1) mechanistic patterns in alkene addition reactions
and (2) Single-Walled Carbon Nanotube (SWCNT) functionalization and analysis.
Nevertheless, the potential Michael addition reactions
cannot be ruled out because each BTA molecule contains two >NH groups and one >[CH.
With the reactive bismaleimide groups (two terminal --C=C-- groups), BMI can polymerize with active hydrogen atom-containing species such as multi-amines via the Michael addition reaction