Controlled Radical Polymerization of Vinyl Acetate Mediated by a Bis(imino)pyridine Vanadium Complex

Source type: Prin

Modeling of uniaxial compression of fiber reinforcements using finite strains

International audienceLiquid Composite Molding (LCM) processes are increasingly used to produce composite parts. Most of those processes involve compression of the fiber reinforcement and resin flow. In order to accurately model LCM processes, a good knowledge of fiber reinforcement behavior in compression is required. Several models have already been published, but none of them include permanent deformations. Also because of the large deformation involved in the processes, a finite strain formulation is proposed. Results are given for a glass twill‐weave fabric

Unidirectional compression of fiber reinforcements. Part 1 : non-linear elastic - plastic behaviour

International audienc

Reactifs organostanniques supportes recyclables et non polluants: halogenation regioselective d'amines aromatiques

Communication par affiche intitulée (présentée par J.-M. Chretien) : Reactifs organostanniques supportes recyclables et non polluants: halogenation regioselective d'amines aromatique

Modeling of high speed RTM injection with highly reactive resin with on-line mixing

International audienc

Chiral a-Aminoorganostannanes : Precursors of a-Aminoorganolithiums

Communication par affiche intitulée (présentée par V. Coeffard) : Chiral a-Aminoorganostannanes : Precursors of a-Aminoorganolithium

Precursors of chiral alpha-amino anions: An improved synthesis of chiral N-(alpha-tributylstannylorgano)oxazolidin-2-ones derived from (R)- or (S)-phenylglycinol

0039-788

Polymer-Supported Organotin Reagents for Regioselective Halogenation of Aromatic Amines

Polymer-supported triorganotin halides were used in the halogenation reaction of aromatic amines. Treatment of aromatic amines with n-butyllithium and polymer-supported organotin halides gave the corresponding polymer-bound N-triorganostannylamines, which by treatment with bromine or iodine monochloride gave the para-halogenated aromatic amines with high yields and high selectivities. The polymer-supported organotin halides reagents regenerated during the course of the halogenation reaction can be reused without loss of efficiency. The presence of tin residues in halogenated aromatic amines was also investigated and evaluated at under 20 ppm after three runs