Oligomers functional polydimethylsiloxane

Epoxy-functional polydimethylsiloxane oligomers are another group that can be cured by UV radiation. Epoxysilicone block copolymers exhibit a good photoinitiator miscibility, high cure rate, and compatibility with epoxy and vinyl ether monomers. These block copolymers form flexible films with excellent release properties and are therefore used as release coatings. ... 

COMPARISON OF THEORETICAL AND EXPERIMENTAL EPOXY GROUP CONCENTRATIONS IN SILANOLATE EQUILIBRATED EPOXY FUNCTIONAL POLYDIMETHYLSILOXANE OLIGOMERS... 

The platinum catalyzed condensation of the a,w-hydrogen difunctional polydimethylsiloxane oligomers with 3-vinyl-7-oxabicyclo[4.1.0]heptane proceeds smoothly and quantitatively. Under the above conditions, a,w-epoxy-functional polydimethylsiloxanes with n = 17, 41, 59 and 111 were prepared as colorless and odorless mobile oils. 

The aliphatic n-propyl unit in the siloxane oligomer has been considered to be a source of potential instability and accordingly there has been considerable interest in aromatic aminofunctional polydimethylsiloxane oligomers. Some of the early efforts [39] generated oligomers by reacting the chloropropyl group with aminophenol under nucleophilic displacement conditions to synthesize the aromatic amine functionality. However, this approach has the drawback that the... 

A variety of block polymers, (A-B)jj, of variable "hard" and "soft" segments have been made (62. 63) by condensing rubbery a,o)-bis(dimethylamino)-polydimethylsiloxane (DMS) oligomers with hard oligomers containing bis-phenolic or hydroxyl end functions (Reaction 17) ... 

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