Capped silicone film and method of manufacture thereof
OwnerDon Haydeninventor
Life of this patent
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Abstract
A silicone film is attached to a surface by chemical bonding. The silicone film consists of chains of siloxane groups, each chain terminating in an end molecule which is either an ester, an ether, or a halogen. The end molecule is allowed to react with water to produce an OH group. The surface is then contacted with a capping agent which reacts with the OH group to produce a new end group which improves the properties of the film. A premix including a tertiary amine can be initially applied to the surface to react with any acidic molecules generated during the process, in order to form non-reactive and water-soluble amino salts.
Claims43
A method for coupling a water repellant silicone film to a solid surface containing a hydrogen atom attached to an oxygen atom in an OH group, comprising the steps of:
- reacting the OH group on the surface with a silicone precursor including an Si—X group where X is an acid forming group, to form an O—Si—X molecule and a first H—X molecule;
- combining the O—Si—X molecule with water to form an O—Si—O—H molecule and a second H—X molecule;
- prior to the reacting step, applying a tertiary amine to the surface;
- and
- after the reacting step and combining step reacting the tertiary amine with the first and second H—X molecules to form a non-reactive and water soluble molecule in the form of an amine salt.
A process for treating a surface of a substrate G containing OH or nitrogen-hydrogen bonds and being surrounded by air, the process including the steps of:
- a) moistening the surface with water;
- b) contacting the surface with a mixture of a tertiary amine and a substituted silane molecule having the formula
- 21
- wherein
- R represents polar or nonpolar groups comprising hydrocarbons or halogenated hydrocarbons, and
- X is a unit selected from a group consisting of esters, ethers, and halogens;
- c) allowing the silane molecules to react with the OH or nitrogen-hydrogen bonds and water to create a first molecule having the formula
- 22
- d) allowing the X unit at the end of the first molecule to react with the water to produce a second molecule having a structure
- 23
- at the end of the first molecule;
- e) contacting the surface with a mixture of a tertiary amine and a capping agent having the formula
- 24
- wherein
- R1 may include any combination of inert and reactive groups;
- and
- f) allowing the capping agent to react with the molecule to result in a new molecule having the formula
- 25
A process for manufacturing water-resistant glass in an environment including air, comprising the steps of:
- a) coating the glass with a film formed of a first molecule chemically bonded with the glass and having the formula
- 26
- wherein
- R consists of nonpolar groups, X is a unit selected from the group consisting of esters, ethers and halogens;
- b) allowing the X unit at the end of the first molecule to react with water to produce a second molecule having the structure
- 27
- at the end of the second molecule;
- c) contacting the surface with a capping agent having the formula
- 28
- wherein
- R1 consists of inert groups;
- d) allowing the capping agent to react with the second molecule to result in a water-resistant film formed from a new molecule having the formula
- 29
- e) applying a tertiary amine to the surface in order to form a non-reactive amine salt during the coating and the contacting steps.
A process for treating a surface of a substrate G containing OH or nitrogen-hydrogen bonds surrounded by air, the process including the steps of:
- a) moistening the surface with water;
- b) contacting the surface with a mixture of a tertiary amine and a first molecule having the formula
- 30
- wherein
- R consists of polar or nonpolar groups, and
- X is unit selected from the group consisting of esters, ethers and halogens;
- c) allowing the first molecule to react with the OH or nitrogen-hydrogen bonds and water at the surface to create a film including a second molecule having the formula
- 31
- wherein
- the film is chemically bonded to the surface;
- d) allowing the X unit at the end of the second molecule to react with water to produce a third molecule having the structure
- 32
- at the end of the third molecule;
- e) contacting the surface with a capping agent having the formula
- 33
- wherein
- R1 consists of chemically active groups;
- and
- f) allowing the capping agent to react with a mixture of a tertiary ammine and the third molecule to result in a new end structure having the formula
- 34
- wherein
- the third molecule with the new end structure serves as a solid state ion exchanger or attachment point.
In a process of manufacturing a water-resistant film for protecting a surface G containing OH or nitrogen-hydrogen bonds, wherein the process comprises the steps of:
- a) coating the surface G, in the presence of a tertiary amine with a polymer having
- i) an anchor group with the formula
- 35
- wherein
- Si is a silicone atom, and
- R comprises nonpolar groups;
- ii) a chain of siloxane groups, the chain having a first end and a second end, the first end of the chain being chemically bound to the silicon atom of the anchor group, the chain having the formula
- 36
- and
- iii) a terminal group of atoms chemically bound to the second end of the chain, the terminal group having the formula
- 37
- wherein
- R1 comprises inert groups, and
- X is a unit selected from a group consisting of esters, ethers and halogens;
- b) allowing the X unit of the terminal group to react with water in the surrounding air to produce a new terminal group having the formula
- 38
- and
- c) replacing the new terminal group with a final terminal group having the structure
- 39
- wherein
- R1 comprises inert groups;
- and
- d) applying a tertiary amine to the surface in order to form a non-reactive amine salt during the coating and the replacing steps.
A process for treating a surface of a substrate G containing OH or nitrogen hydrogen bonds and surrounded by air, the process including the steps of:
- a) moistening the surface with water;
- b) contacting the surface with a mixture of a tertiary amine and a silane group having the formula
- 41
- wherein
- R represents polar or nonpolar groups comprising hydrocarbons or halogenated hydrocarbons, and
- X is selected from the group consisting of esters, ethers, and halogens;
- c) allowing the silane groups to react with the OH or nitrogen hydrogen bonds and water at the surface to create a film formed of chains having the formula
- 42
- d) allowing the X unit at the end of the chain to react with water in the surrounding air to produce a molecule having the structure
- 43
- at the end of the chain;
- and
- e) contacting the surface with a mixture of a tertiary amine and a capping agent having the formula
- Y−Z
- wherein
- Y is a carrier molecule,
- Z is a terminal group of the capping agent;
- and
- f) allowing the capping agent to react with the molecule to result in a new molecule chain having the formula
- 44
Dependencies are inferred from the claim text.