Organosilicon Copolymers with Carbotricyclodecasiloxane Fragments in the Dimethylsiloxane Chain

Silicon-Organic Polyepoxides with Epoxy Side Groups Modified with Chelates

“…Triplet signals with chemical shifts at 0.84 ppm corresponded to the methine protons in Si-≡H(CH 3 ) groups. Multiplet signals with chemical shifts within the range δ ≈ 7.5-7.6 ppm corresponded to the protons of phenyl groups 17,18 . Signals with chemical shifts δ = 2.7 and δ = 3.2 ppm were attributed to protons of the epoxy group 5 .…”

“…According to the classic researches into the polyhydrosilylation reaction between α,ω-dihydrooligodimethylsiloxanes with α , ωdivinyloligo-dimethylsiloxanes, the process is carried out according to the general scheme given above (Scheme 2) 9 . At the same time, 1) The Latin numerals in the extreme left column identify both the monomers and their polymers *1% solution in toluene some reports claim that both α and β adducts (products of the hydride addition reaction according to anti-Markownikov (α-adduct) and Markownikov (β-adduct) rules) were obtained 17,18 .…”

“…The actual reactions result in both I and II products 8,18 . In the NMR 1 H spectra of real polyhydrosilylation reaction products (for example polymer IV, Table 1) one can observe signals with chemical shifts δ = 0.84 and δ = 1.20, which corresponded to β (II) and α (I) adducts (Scheme 2) [17][18]21,22 .…”

Cyclolinear organosilicon copolymers with monocyclic fragments in the side chain

“…3 From literature, it is known 4 that the main difference between oligo(dimethyl)methylsiloxanes of branched structure and equal viscosity linear oligodimethylsiloxanes is the absence of a tendency to crystallize at definite branching methylsilsesquioxane links. The main reason for crystallization suppression in oligo(dimethyl)methylsiloxanes is the break in regular structure of the linear siloxane chain with insertion of methylsilsesquioxane links.…”

Poly(1,3‐disila‐1,3‐diphenyl‐2‐oxaindane)– poly(dimethylsiloxane) block copolymers

“…Organosilicon block copolymers (BCs) have recently received widespread attention,4 and there is some information about those BCs with cyclolinear molecular structures. Known A m B n ‐type cyclolinear siliconorganic BCs include poly[organocyclotetra(hexa)siloxane dimethylsiloxane],5 poly(organocyclocarbosiloxane dimethylsiloxane),6, 7 and ladder poly(phenylsiloxane)s with single‐stranded8, 9 and double‐stranded fragments in the main and side dimethylsiloxane chains;10 one known (AB) m C n ‐type BC is silarylenecyclotetra(hexa)siloxane–dimethylsiloxane 11, 12…”