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Silicone macromers

Keywords silicone macromers, polymerization, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal... [Pg.710]

The copolymerization is performed in solution with radical-forming initiators at temperatures of about 70 °C. The silicone macromer contains polymerizable vinyl groups on both chain ends. Such silicone macromers are produced by Wacker GmbH and are available with different chain lengths. The copolymerization with vinyl acetate is very facile and take place statistically [2] after polymerization, no double bonds can be found. To avoid crosslinking, the molecular weight has to be adjusted by the use of chain transfer agents or by the solvent and its concentration. [Pg.710]

Figure 1 schematically shows the reaction between vinyl acetate and vinyl-functionalized silicone macromer. [Pg.710]

Copolymers of 2,6-dimethylphenol with 2-allyl-6-methyl phenol have been synthesized. The allyl-substituted polymers were cured thermally or could be converted to the epoxy derivatives to give thermosetting polymers.Silicone macromers have been prepared by reaction of 2-allyl-6-methylphenol with SiH-terminated polysiloxanes by a platinum... [Pg.15]

Snow, K.M., Pickett, J.E., and Lewis, L.N., Silicone Macromers and Thermoplastic Flame Retardant Silicone-Polyphenylene Ether Graft Copolymers Obtained Therefrom, US 5204438, 1993. (General Electric Co.)... [Pg.25]

Ollgoslloxane monomers and macromers are abbreviated as Sn, Mn (n-1,2,5,8, and n>average number of silicon atoms In the macromer). Fluorosubstltuted analogues of S2 were synthesized similarly and abbreviated as FS2, FF2, ans SF2 as shown In the scheme. [Pg.246]

Kim and colleagues copolymerized a number of PECs with oligomers of d/-lactic acid and terminated the resulting copolymer with an acrylate group to form photopolymerizable macromers. The resulting crosslinked polymers were evaluated as biodegradable lubricants for stainless steel needles and a potential substitute for the nonabsorbable silicones used presently. [Pg.53]

Sweet Silicones Biocatalytic Reactions to Form Organosilicon Carbohydrate Macromers... [Pg.182]

See other pages where Silicone macromers is mentioned: [Pg.711]    [Pg.711]    [Pg.81]    [Pg.711]    [Pg.711]    [Pg.81]    [Pg.657]    [Pg.661]    [Pg.2233]    [Pg.5]    [Pg.190]    [Pg.5]    [Pg.99]    [Pg.105]    [Pg.114]    [Pg.40]    [Pg.86]    [Pg.16]   
See also in sourсe #XX -- [ Pg.710 ]



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