Elastomer toughened polyimide adhesives... The process for making the improved adhesive involves preparing the rubber containing amic acid prepolymer by chemically reacting an amine-terminated elastomer and an aromatic diamine with an aromatic dianhydride with which a reactive chain stopper anhydride was mixed, and utilizing solvent or mixture of solvents for the reaction
Model polydiethylsiloxane networks i. synthesis and phase behaviour... End functionalization has been achieved by using divinyltetramethylsiloxane as a chain stopper during the cationic polymerization of hexaethylcyclotrisiloxane or by anionic polymerization of hexaethylcyclotrisiloxane with allyllithium followed by end capping...
Supramolecular buffering by ring-chain competition... Our analysis shows that supramolecular buffering of a molecule is caused by its participation as a chain stopper in supramolecular ring-chain equilibria and we reveal here the influence of various thermodynamic parameters....
Chain stopper engineering for hydrogen bonded supramolecular polymers... The viscosity of these solutions can be controlled by adding monofunctional compounds, which interact with the chain extremities: chain stoppers....
