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Catalytic polymerization of organosiloxane oligomers in presence of alkalies. Communication 1. Effect of the composition and method of preparation of oligomers on the polymerization process

  • Organic and Biological Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Summary

  1. 1.

    An investigation was made of the polymerization in presence of NaOH or organosiloxane oligomers of various chemical compositions prepared by different methods. The rate of polymerization of oligomers prepared by hydrolytic polycondensation is higher than that of oligomers of similar composition prepared by double decomposition, which appears to be the result of differences in the strains of the organosiloxane rings entering into the structure of the chains of their molecules.

  2. 2.

    Bulky silicon-attached groups create steric hindrance to the attack of silicon atoms in the siloxane chain by the active center, and this reduces the rate of polymerization.

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Literature cited

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Authors and Affiliations

  1. Institute of Heteroorganic Compounds, Academy of Sciences, USSR

    A. I. Petrashko, A. A. Zhdanov & K. A. Andrianov

  2. V. I. Lenin All-Union Electrotechnical Institute, USSR

    A. I. Petrashko, A. A. Zhdanov & K. A. Andrianov

Authors
  1. A. I. Petrashko
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  2. A. A. Zhdanov
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  3. K. A. Andrianov
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Additional information

This article is published in accordance with a resolution of the Conference of Chief Editors of Journals of the Academy of Sciences of the USSR, July 12, 1962, as a dissertation paper by A. I. Petrashko.

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1276–1281, July, 1964

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Petrashko, A.I., Zhdanov, A.A. & Andrianov, K.A. Catalytic polymerization of organosiloxane oligomers in presence of alkalies. Communication 1. Effect of the composition and method of preparation of oligomers on the polymerization process. Russ Chem Bull 13, 1182–1186 (1964). https://doi.org/10.1007/BF00863126

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  • DOI: https://doi.org/10.1007/BF00863126

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