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.
Claims40
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 silane groups having the formula 19
- wherein
- R represents polar or nonpolar groups including 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 20
- wherein n is around 100 or more;
- d) allowing the X atom at the end of the chain to react with water to produce a molecule having the structure 21
- at the end of the chain;
- and
- e) contacting the surface with a capping agent having the formula 22
- 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 chain having the formula 23
A process for manufacturing water-resistant glass G in an environment including air, comprising the steps of:
- a) coating the glass with a somewhat water-resistant film formed of chains having the formula 24
- wherein
- R consists of nonpolar groups,
- X is selected from the groups consisting of esters, ethers and halogens, and
- n is around 100 or more,
- the film being chemically bonded with the glass;
- b) allowing the X atom at the end of the chain to react with water to produce a molecule having the structure 25
- at the end of the chain;
- and
- c) contacting the surface with a capping agent having the formula 26
- wherein R1 consists of inert groups;
- and
- d) allowing the capping agent to react with the molecule to result in a greatly water-resistant film formed from chains having the formula 27
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 silane groups having the formula 28
- wherein
- R consists of polar or nonpolar groups, 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 29
- wherein
- n is around 100 or more, and
- the film is chemically bonded to the surface;
- d) allowing the X atom at the end of the chain to react with water to produce a molecule having the structure 30
- at the end of the chain;
- and
- e) contacting the surface with a capping agent having the formula 31
- wherein R1 consists of chemically active groups, and
- f) allowing the capping agent to react with the molecule to result in a new end molecule having the formula 32
- wherein the new end molecule serves as a solid state ion exchanger or attachment point for chemically bound enzymes, chelating agents, dyes, chemical indicators, or the like.
A film for altering the properties of a surface G containing OH or nitrogen hydrogen bonds and surrounded by air, the film consisting of a polymer including:
- a) an anchor group having the formula 33
- wherein
- R represents polar or nonpolar groups including hydrocarbons or halogenated hydrocarbons;
- b) a chain of siloxane groups having a first end and a second end, the first end of the chain being chemically bound to the silicon molecule of the anchor group, the chain having the formula 34
- where n is around 100 or more;
- and
- c) a terminal group of molecules chemically bound to the second end of the chain, the terminal group having the structure 35
- where R1 may include any combination of inert and reactive groups.
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 step of coating the glass with a polymer having
- i) an anchor group having the formula 36
- wherein
- R consists of nonpolar groups, and
- 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 molecule of the anchor group, the chain having the formula 37
- where n is around 100 or more, and
- iii) a terminal group of molecules chemically bound to the second end of the chain, the terminal group having the formula 38
- wherein
- R1 consists of inert groups, and
- X is selected from the group consisting of esters, ethers and halogens, the improvement comprising the steps of
- a) allowing the X atom of the terminal group to react with water to produce a new terminal group having the formula 39
- b) replacing the new terminal group with a final terminal group having the structure 40
- wherein R1 consists of inert groups.
Dependencies are inferred from the claim text.