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US 11,028,287 B2Granted
Moisture-curable omniphobic coatings
AssigneeThe Government of the United States of America, as represented by the Secretary of the Navy
InventorErick B. Iezzi
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Abstract
An omniphobic material and its method of making by: providing an alkoxysilane-terminated polyurea, and reacting by a moisture-curing reaction the polyurea and a fluorinated material having one or more alkoxy or hydroxyl groups.
Claims34
A composition comprising a polymer made by a method comprising:
- providing an alkoxysilane-terminated polyurea;
- wherein the alkoxysilane-terminated polyurea is a reaction product of a mixture consisting of an aliphatic polyisocvanate having at least 2 isocyanate groups and an amino-functional alkoxysilane of the formula NH(R3)(CH2)nSi(R2)x(OR1)3-x;
- wherein x is 1, 2, or 3;
- wherein x is 0, 1, or 2;
- wherein each R1 and R2 is an alkyl group;
- and
- wherein R3 is aryl, alkyl, an ester-containing alkyl, or a fluorinated alkyl group;
- and
- reacting by a moisture-curing reaction the polyurea and a fluorinated material having one or more alkoxy or hydroxyl groups.
6 more elements
A method comprising:
- providing a composition comprising:
- an alkoxysilane-terminated polyurea;
- wherein the alkoxysilane-terminated polyurea is a reaction product of a mixture consisting of an aliphatic polyisocyanate having at least 2 isocyanate groups and an amino-functional alkoxysilane of the formula NH(R3)(CH2)nSi(R2)x(OR1)3−x;
- wherein n is 1, 2, or 3;
- wherein x is 0, 1, or 2;
- wherein each R1 and R2 is an alkyl group;
- and
- wherein R3 is aryl, alkyl, an ester-containing alkyl, or a fluorinated alkyl group;
- and
- a second amino-functional alkoxysilane selected from the group consisting of 3-aminopropyltrimethoxysilane, 3-aminopropyltri ethoxy silane, 3-aminopropylmethyldi ethoxy silane, or N-methyl-3-aminopropyltrimethoxysilane;
- and
- reacting by a moisture-curing reaction the polyurea and a fluorinated material having one or more alkoxy or hydroxyl groups.
9 more elements
A method comprising:
- providing an alkoxysilane-terminated polyurea;
- wherein the alkoxysilane-terminated polyurea is a reaction product of a mixture consisting of an aliphatic polyisocvanate having at least 2 isocyanate groups and an amino-functional alkoxysilane of the formula NH(R3)(CH2)nSi(R2)x(OR1)3-x;
- wherein n is 1, 2, or 3;
- wherein x is 0, 1, or 2;
- wherein each R1 and R2 is an alkyl group;
- and
- wherein R3 is aryl, alkyl, an ester-containing alkyl, or a fluorinated alkyl group;
- and
- reacting by a moisture-curing reaction the polyurea and a fluorinated material having one or more alkoxy or hydroxyl groups.
6 more elements
A composition comprising:
- a polymer made by a method comprising;
- providing an alkoxysilane-terminated polyurea;
- wherein the alkoxysilane-terminated polyurea is a reaction product of a mixture consisting of an aliphatic polyisocyanate having at least 2 isocyanate groups and an amino-functional alkoxysilane of the formula NH(R3)(CH2)nSi(R2)x(OR1)3-x;
- wherein n is 1, 2, or 3;
- wherein x is 0, 1, or 2;
- wherein each R1 and R2 is an alkyl group;
- and
- wherein R3 is aryl, alkyl, an ester-containing alkyl, or a fluorinated alkyl group;
- and
- reacting by a moisture-curing reaction the polyurea and a fluorinated material having one or more alkoxy or hydroxyl groups;
- and an amino-functional alkoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropylmethyldiethoxysilane, or N-methyl-3-aminopropyltrimethoxysilane.
8 more elements
Dependencies are inferred from the claim text.