| 摘要 |
<p>The crosslinking and simultaneous alkylation of poly(hydridomethylsiloxanes) to form crosslinked siloxanes having n-alkylmethyl groups is disclosed. Without changing the chain length of the poly(hydridomethylsiloxane) starting material, a family of lightly crosslinked siloxanes having n-alkylmethyl groups, with a range of viscosities, are produced using one or more alpha-olefins along with a small amount of an unconjugated alpha, omega-diene added as a crosslinker. Our poly(hydridomethylsiloxanes) are made from highly pure silanol-free hexamethyldisiloxane and highly pure mixtures of silanol-free tetramethylcyclotetrasiloxane (D<Sup>H</Sup>4) and pentamethylcyclopentasiloxane D<Sup>H</Sup>5 containing no more than 100 parts per million (ppm) water, with anhydrous trifluoromethane sulfonic acid (triflic acid, CF<Sub>3</Sub>SO<Sub>3</Sub>H), at room temperature, to provide linear poly(hydridomethylsiloxanes) having degrees of polymerization of up to 250.</p> |
