| abstract |
The present invention provides near quantitative yields of greater than about 95% isomericnpurity of poly(3-aminopropylmethylsiloxanes) of the general formulae:n Me 3 Si(H 2 NCH 2 CH 2 CH 2 MeSiO) x OSiMe 3 n (H 2 NCH 2 CH 2 CH 2 MeSiO) y nwherein Me is methyl, x may range from 2 to about 100 and y may range from 3 to about 7. n The present invention also provides a simple method for rapidly producing poly(3-amino-propylmethylsiloxanes)nof the general formulae:n Me 3 Si(H 2 NCH 2 CH 2 CH 2 MeSiO) x OSiMe 3 n (H 2 NCH 2 CH 2 CH 2 MeSiO) y nwherein Me is methyl, x may range from 2 to over 100 and y may range from 3 to about 7, thenmethod comprising heating of 3-(3-aminopropyl)-1,1,1,3,5,5,5-heptamethyltrisiloxane, of atnleast 95% isomeric purity, with a basic catalyst, removing hexamethyldisiloxane, andndecomposing the catalyst. |