Inorganic-organic nanocomposite
First Claim
1. An inorganic-organic nanocomposite comprising at least one inorganic component which is a layered inorganic nanoparticulate and at least one organic component which is a quaternary ammonium-containing organopolysiloxane, wherein the quaternary ammonium groups are positioned at the terminal ends of the organopolysiloxane and along the siloxane backbone, and wherein the quaternary ammonium organopolysiloxane is obtained by hydrosilating a polydiorganosiloxane possessing Si-H bonds with allylamine in the presence of hydrosilation catalyst to provide amine-containing organopolysiloxane and thereafter quaternizing the amine-containing organopolysiloxane to obtain the quaternary ammonium organopolysiloxane.
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Abstract
The present invention relates to improved nanocomposite compositions and methods for making and using the same. This invention also relates to the use of these inorganic-organic nanocomposite in compositions, for example, coatings, sealants, caulks, adhesives, and as additives for solid polymer-containing compositions.
102 Citations
34 Claims
- 1. An inorganic-organic nanocomposite comprising at least one inorganic component which is a layered inorganic nanoparticulate and at least one organic component which is a quaternary ammonium-containing organopolysiloxane, wherein the quaternary ammonium groups are positioned at the terminal ends of the organopolysiloxane and along the siloxane backbone, and wherein the quaternary ammonium organopolysiloxane is obtained by hydrosilating a polydiorganosiloxane possessing Si-H bonds with allylamine in the presence of hydrosilation catalyst to provide amine-containing organopolysiloxane and thereafter quaternizing the amine-containing organopolysiloxane to obtain the quaternary ammonium organopolysiloxane.
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8. An inorganic-organic nanocomposite comprising at least one inorganic component which is a layered inorganic nanoparticulate and at least one organic component which is a quaternary ammonium-containing organopolysiloxane, wherein the quaternary ammonium organopolysiloxane is at least one ammonium-containing diorganopolysiloxane having the formula:
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MaDbD′
cwherein “
a”
is 2, and “
b”
is equal to or greater than 1 and “
c”
is positive;
M is
[R3zNR4]3-x-yR1xR2ySiO1/2wherein “
x”
is 0, 1 or 2 and “
y”
is either 0 or 1, subject to the limitation that x +y is less than or equal to 2, “
z”
is 2, R1 and R2 each independently is a monovalent hydrocarbon group up to 60 carbons;
R3 is selected from the group consisting of H and a monovalent hydrocarbon group up to 60 carbons;
R4 is a monovalent hydrocarbon group up to 60 carbons;D is
R5R6SiO2/2where R5 and R6 each independently is a monovalent hydrocarbon group up to 60 carbon atoms; and
D′
is
R7R8SiO2/2where R7 and R8 each independently is a monovalent hydrocarbon group containing amine with the general formula;
[R9aNR10]wherein “
a”
is 2, R9 is selected from the group consisting of H and a monovalent hydrocarbon group up to 60 carbons;
R10 is a monovalent hydrocarbon group up to 60 carbons. - View Dependent Claims (9, 10, 11)
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- 12. An inorganic-organic nanocomposite comprising at least one inorganic component which is a layered inorganic nanoparticulate and at least one organic component which is a quaternary ammonium-containing organopolysiloxane, wherein the quaternary ammonium groups are positioned at the terminal ends of the organopolysiloxane and along the siloxane backbone, and wherein the quaternary ammonium organopolysiloxane is obtained by reacting an aminosilane possessing at least one hydrolysable group selected from the group consisting of tris(triethoxysilylpropyl)amine, tris(trimethoxysilylpropyl)amine, tris(diethoxymethylsilylpropyl)amine, tris(tripropoxysilylpropyl)amine, tris(ethoxydimethylsilylpropyl)amine, and tris(triethoxyphenylsilylpropyl)amine with water under hydrolysis/condensation conditions to provide amine-containing organopolysiloxane and thereafter quaternizing the amine-containing organopolysiloxane to provide the quaternary ammonium organopolysiloxane.
- 16. An inorganic-organic nanocomposite comprising at least one inorganic component which is a layered inorganic nanoparticulate and at least one organic component which is a quaternary ammonium-containing organopolysiloxane, wherein the quaternary ammonium groups are positioned at the terminal ends of the organonolysiloxane and along the siloxane backbone, and wherein the quaternary ammonium organopolysiloxane is obtained by reacting an aminosilane possessing at least one hydrolysable group with a quaternizing reactant selected from the group consisting of a mineral acid and alkyl halide to provide an ammonium-containing N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride, N-trimethoxysilylpropyl-N,N,N-tri-n-butylammonium chloride, or trialkoxysilane octadecyldimethyl(3-trimethyloxysilylpropyl) ammonium chloride and subsequently with water under hydrolysis/condensation conditions to obtain the quaternary ammonium organopolysiloxane.
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20. A method of preparing an inorganic-organic nanocomposite comprising the steps of:
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a) reacting an aminosilane possessing at least one hydrolyzable alkoxy group with water, optionally, in the presence of catalyst, to provide an amine-containing organopolysiloxane; b) quaternizing the amine-containing organopolysiloxane to provide a quaternized ammonium-containing organopolysiloxane, wherein the quatenary ammonium groups are positioned at the terminal ends of the organopolysiloxane and along the siloxane backbone; and
,c) combining the quaternized ammonium-containing organopolysiloxane with a layered inorganic nanoparticulate possessing exchangeable cation to provide the inorganic-organic nanocomposite. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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- 31. An inorganic-organic nanocomposite comprising at least one inorganic component which is a layered inorganic nanoparticulate and at least one organic component which is a quaternary ammonium-containing organopolysiloxane, wherein the quaternary ammonium-containing organopolysiloxane is represented by the general formula:
Specification