Silicone graft copolymers with styrene, methyl-methacrylate and chloroprene.

Allan H. Fawcett, Andrew B. Foster, Majid Hania, Marcia Hohn, Gerry O. McCaffery, Judge L. Mazebedi, Eddie. Mullen

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Block and graft copolymers of styrene, methyl-methacrylate, or chloroprene with polysiloxanes that bear mercaptan groups were prepd. by free radical polymn. One polysiloxane had thiol groups on each silicon residue, a second had about a 5% fraction so functionalized, and the third had thiol groups only at the two ends. When the monomer/thiol ratio was low, single residues were added by the thiol-ene process, but a high ratio promoted a chain transfer process, with reasonably long grafts. The structures were detd. by high field NMR anal. The materials obtained from the second and third polysiloxanes were turbid, when cast as films, and had silicone-rich phases dispersed within PMMA- and polystyrene rich phases. [on SciFinder(R)]
    Original languageEnglish
    Pages (from-to)213-214
    Number of pages2
    JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
    Volume42
    Issue number1
    Publication statusPublished - 2001

    Keywords

    • siloxane vinyl block graft copolymer prepn
    • mercaptopropyl methylsilanediol styrene dimethylsilanediol graft block copolymer prepn
    • chloroprene mercaptopropyl methylsilanediol dimethylsilanediol graft block copolymer prepn
    • methyl methacrylate mercaptopropyl methylsilanediol dimethylsilanediol graft block copolymer prepn

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