Topical silicone compositions and method for making
AssigneeGeneral Electric Company
InventorsMatthew David Butts, Christopher Michael Byrne, Steven James Stoessel
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Abstract
A silicone composition is provided which comprises at least one polysiloxane or silicone resin, and at least one molecular hook wherein the molecular hook comprises a hexafluorophosphate counterion, a tetrafluoroborate counterion, a triflate counterion, or combinations thereof. Further embodiments of the present invention include a method for substantially increasing the thermal stability of a silicone composition and a method for making the silicone composition.
Claims48
A silicone composition which comprises at least one polysiloxane or silicone resin, at least one linker, and at least one molecular hook wherein the molecular hook comprises a hexafluorophosphate counterion, a tetrafluoroborate counterion, or combinations thereof.
A silicone composition comprising at least one compound of the formula (VIII):
- where each R7-15 is methyl;
- Z3 is a pyrimidinium molecular hook of the formula (III)
- wherein W is hydrogen, E is methyl;
- Q−is hexafluorophosphate, tetrafluoroborate, or combinations thereof;
- and Y is a linker of the formula (XX):
- wherein u is 1;
- w is 1 or 2;
- R is H;
- R43 is H;
- and where the polysiloxane is bound to the (CR2)w (Formula XX).
A silicone composition comprising at least one compound of the formula (VII):
- where each R1-6 is methyl;
- Z1-2 are each a pyrimidinium molecular hook of the formula (III):
- wherein W is hydrogen, E is methyl;
- Q−is hexafluorophosphate, tetrafluoroborate, or combinations thereof;
- and Y is a linker of the formula (XX):
- wherein u is 1;
- w is 1 or 2;
- R is H;
- R43 is H;
- and where the polysiloxane is bound to the (CR2)w (Formula XX).
A method for making a silicone composition comprising
- (1) reacting at least one polysiloxane or silicone resin with at least one linker to form a linker-substituted polymer;
- and
- (2) reacting the linker-substituted polymer with at least one molecular hook to form a hook-linker-polymer product wherein the molecular hook moiety in the product comprises a hexafluorophosphate counterion, a tetrafluoroborate counterion, or combinations thereof.
A method for making a silicone composition comprising
- (1) reacting at least one polysiloxane and at least one benzyl-halide linker to form a benzyl-halide substituted polymer;
- and
- (2) reacting the benzyl-halide substituted polymer with at least one pyrimidinium molecular hook wherein the silicone composition comprises a polysiloxane compound of the formula (VIII):
- where each R7-15 is methyl;
- Y is a linker of the formula (XX):
- wherein the polysiloxane is bound to the (CR2)w (Formula XX);
- u is 1;
- w is 1 or 2;
- R is H;
- R43 H;
- and Z3 is the molecular hook of the formula (III)
- wherein W is hydrogen, E is methyl;
- and Q is a hexafluorophosphate counterion, a tetrafluoroborate counterion, or combinations thereof.
A method for making a silicone composition comprising
- (1) reacting at least one polysiloxane and at least one benzyl-halide linker to form a benzyl-halide substituted polymer;
- and
- (2) reacting the benzyl-halide substituted polymer with at least one pyrimidinium molecular hook wherein the silicone composition comprises a polysiloxane compound of the formula (VII):
- where each R1-6 is methyl;
- Y is a linker of the formula (XX):
- wherein the polysiloxane is bound to the (CR2)w (Formula XX);
- u is 1;
- w is 1 or 2;
- R is H;
- R43 H;
- and Z1-2 are each a pyrimidinium molecular hook of the formula (III):
- wherein W is hydrogen, E is methyl;
- and Q is a hexafluorophosphate counterion, a tetrafluoroborate counterion, or combination thereof.
A method for substantially increasing the thermal stability of a silicone composition comprising providing at least one molecular hook with a hexafluorophosphate counterion, a tetrafluoroborate counterion, or combinations thereof;
- a linker;
- and a polysiloxane or silicone resin wherein the silicone composition has a percent decomposition of less than about 30% for a time period of 4 weeks at a temperature of about 40° C. in acetone.
Dependencies are inferred from the claim text.