The synthesis of functional poly(methylhydro)siloxanes has been successfully performed by effective quantitative hydrosilylation of allyl derivatives (allyl phenyl ether, allyl glycidyl ether, allyl methacrylate, allyl chloride, allylamine) and 1‐octene with poly(methylhydro)siloxanes catalyzed by platinum [Pt(PPh3)2(CH2=CH2), PtCl2(PPh3)2, H2PtCl6–cyclohexanone] and ruthenium (Ru3(CO)12) complexes. The products were isolated and characterized by 1H NMR, FT IR and GPC methods and can be regarded as examples of well‐defined functionalized polysiloxanes with various practical applications. © 1997 John Wiley & Sons, Ltd.

Dimethylformamid (I) wird in Tetrahydrofuran in Gegenwart von Katalysatoren durch Trialkyl‐ und Alkylchlorsilane (II) zu Trimethylamin (III) reduziert.

Particle trapping effects on stimulated Brillouin and Raman scattering have been investigated. A time and space dependent model assumes a Maxwellian plasma which is taken to be homogeneous in the interaction region. Ion trapping has a rather weak effect on stimulated Brillouin scattering and large reflectivities are obtained even in strong trapping regime. Stimulated Raman scattering is considerably reduced by electron trapping. Typically 15-20 times larger laser intensities are required to obtain same reflectivity levels than without trapping.

No abstract

No abstract