Method of making siloxane-based polyamides
AssigneeDow Corning Corporation
InventorsLenin James Petroff, Jay Brian Rose, Michael Ward Skinner
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Abstract
A method of making siloxane-based polyamides which includes at least one repeating unit represented by the formula ##STR1## wherein X is a linear or branched C.sub.1 -C.sub.30 alkylene chain; Y is a linear or branched C.sub.1 -C.sub.20 alkylene chain; DP is an integer having a value of 10-500; n is an integer having a value of 1-500. The method involves heating an intimate reaction mixture containing an olefinic acid and an organic diamine at a temperature greater than 100.degree. C. and forming an organic diamide; and thereafter reacting the organic diamide with a hydride-terminated polydimethylsiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide.
Claims10
A method of making a siloxane-based polyamide which includes at least one repeating unit represented by the formula ##STR20## wherein X is a linear or branched C.sub.3 to C.sub.10 alkylene chain;
- Y is a linear or branched C.sub.1 -C.sub.20 alkylene chain;
- R.sup.1 -R.sup.4 are independently methyl, ethyl, propyl, isopropyl, a siloxane chain, phenyl, or phenyl substituted by 1-3 members which are methyl or ethyl;
- DP is an integer having a value of 10-500;
- and n is an integer having a value of 1-500;
- the method comprising heating a reaction mixture containing an olefinic acid and an organic diamine at a temperature greater than 100.degree. C. and forming an organic diamide;
- and thereafter reacting the organic diamide with a hydride-terminated polydimethylsiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide.
A method of making a siloxane-based polyamide which includes at least one repeating unit represented by the formula ##STR23## wherein X is a linear or branched C.sub.3 to C.sub.10 alkylene chain;
- Y is a linear or branched C.sub.1 -C.sub.20 alkylene chain;
- R.sup.1 -R.sup.4 are independently methyl, ethyl, propyl, isopropyl, a siloxane chain, phenyl, or phenyl substituted by 1-3 members which are methyl or ethyl;
- DP is an integer having a value of 10-500;
- and n is an integer having a value of 1-500;
- the method comprising reacting an organic diamide with a hydride-terminated polydimethylsiloxane in the presence of a hydrosilylation catalyst to form the siloxane-based polyamide.
Dependencies are inferred from the claim text.