N-Sulfonyl-Sulfilimines as Premature Vulcanization Inhibitors

Abstract

N-Sulfonyl-sulfilimines which undergo a thermal elimination to form N-alkyl (or aryl)thiosulfonamides act as premature vulcanization inhibitors, apparently by the same mechanism as the thiosulfonamides. S,S-di(isopropyl)-N-(p-toluenesulfonyl) sulfilimine was of particular interest due to its good inhibitory activity, ease of preparation, excellent stability, and resistance to bloom.

A model study of vibrational excitation of carbon dioxide molecule by slow electrons: the role of wave packet sliding from the ridge

“…The formulae (12)(13)(14) provide the base of our quasi onedimensional approximation. It differs from the approach considered in [7,8] by the extra term !i ( ) (n# ) which explicitly accounts for the quenching of the onedimensional 'boomerang' state due to its 'sliding from the ridge'.…”

“…Equations (12)- (14) allow us to formulate our approach as a study of decay of some state via the series of the intermediate resonances. The idea of the diabatic resonance series related to a vicinity of an unstable closed trajectory (in our case it is the pure symmetrical stretch motion) was put forward in [17] (see also [18]) and applied succesfully to some problems of atomic physics [19] and especially to the study of the Wannier threshold behaviour [20].…”

“…The energy curves, obtained for the linear configuration with the Hopper's parameters [14], are slightly different from the curves given in [7]. In the present publication we use the parameters which were given in [7].…”

“…Nevertheless, the accurate representations for the anion potential surface º ' (q) and the width function ' (q) are not known as yet. We use some approximate expressions for these functions which are obtained from analysis of the calculations by Krauss and Neumann [13] and Hopper [14] together with the representation obtained by Cadez et al [7] via fitting the experimental data within the one-dimensional 'boomerang' model. (Essentially, our approach does not impose any restrictions on the form The analytical formulae we are using for these quantities read:…”

Observation of rotational rainbow scattering in atom-triatomic molecule collisions: K, Rb-CO2

“…The question will not be settled here, but new and clearer evidence on (intermediary) charge transfer will be presented. The (asymptotic) observation of this process in collisional ionisation experiments on M-CO 2 and similar systems [15,16] has greatly contributed to unravel the intricate properties of CO~ [17][18][19][20][21] and ask for the stability of M-CO 2 complexes [22]. The study of rare gas-CO 2 and similar systems has motivations in a detailed understanding of infrared laser action and the validation of (anisotropic) potentials calculated in the electron gas approximation [23,24].…”