Poly(aminoorganofunctionaldisiloxanes)

Details Poly(aminoorganofunctionaldisiloxanes) Poly(aminoorganofunctionaldisiloxanes)

C - Chemistry, Metallurgy

08

G

C08G 77/26 (2006.01) C08L 83/08 (2006.01)

Patent

CA 2341785

The present invention provides near quantitative yields of greater than about 95% isomeric purity of poly(3-aminopropyl-methylsiloxane)-poly(dimethylsiloxane) copolymers of the general formulae: Me3Si(H2NCH2CH2CH2MeSiO)w(Me2SiO)x OSiMe3 (H2NCH2CH2CH2MeSiO)y(Me2SiO)z wherein Me is methyl, w may range from 1 to about 100, x may range from 1 to about 100, y may range from 1 to about 7, z may range from 1 to about 7 and y+z may range from 3 to about 7. The present invention also provides a simple method for rapidly producing poly(3- aminopropylmethylsiloxane)-poly(di-methylsiloxane) copolymers of the general formulae: Me3Si(H2NCH2CH2CH2MeSiO)w(Me2SiO)x OSiMe3 (H2NCH2CH2CH2MeSiO)y(Me2SiO)z wherein Me is methyl, w may range from 1 to about 100, x may range from 1 to about 100, y may range from 1 to about 7, z may range from 1 to about 7, and y+z may range from 3 to about 7, the method comprising heating of poly(3-aminopropylmethylsiloxane) of at least 95% isomeric purity, a cyclodimethylsiloxane with a basic catalyst, and destroying the catalyst when the copolymerization reaction is complete.

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