Back to results
US 12,637,572 B2Granted
Composition for depositing an alkanethiol monomolecular layer on a metallic surface and related methods
AssigneeNano Mint Technologies LLC
InventorTsineng Ying
Life of this patent
Estimating the term…
Abstract
A composition and methods for depositing a monomolecular layer of alkanethiol on a metallic surface in under 10 minutes are provided. The monomolecular layer of alkanethiol is applied using economical and reliable methods, such as by burnishing or ultrasonic bathing. The composition removes extra layers of alkanethiol to allow a single, even self-assembled monomolecular layer to form on the metallic surface, which enhances the tarnish-resistance of the surface and lubricates the surface.
Claims26
An alkanethiol solution, comprising:
- an alkanethiol for forming, when an article to be treated is exposed to the alkanethiol solution, a well-ordered alkanethiol monolayer on a metallic surface of the article;
- an emulsifier;
- a tartaric acid or salt thereof in an amount that is effective to remove extra molecules of the alkanethiol beyond a base layer of alkanethiol;
- and
- water into which the alkanethiol, the emulsifier, and the tartaric acid or salt thereof are mixed.
2 more elements
An alkanethiol solution, comprising:
- an alkanethiol having the general formula R—SH, where SH is a sulfhydryl group and where R is an alkyl radical having from ten through twenty carbon atoms, the alkanethiol being present in a percentage by weight of from 0.1% to 1%;
- polysorbate 80 as an emulsifier, present in a percentage by weight of from 0.1% to 1%;
- tartaric acid present in a percentage by weight of from 4% to 12%, wherein the tartaric acid is in an amount that is effective to remove extra molecules of the alkanethiol beyond a base monomolecular layer of the alkanethiol on a silver surface or a gold surface;
- an anti-microbial agent comprising at least one of the following:
- didecyl dimethyl ammonium bicarbonate or didecyl dimethyl ammonium carbonate, present in a percentage by weight of from 0.1% to 1%;
- alcohol present in a percentage by weight of from 4% to 12%;
- and
- water into which the alkanethiol, the polysorbate 80, the tartaric acid, the anti-microbial agent, and the alcohol are mixed;
- wherein, when the alkanethiol solution is applied to the silver surface or the gold surface, the alkanethiol solution deposits an alkanethiol monomolecular layer having a thickness of under 100 nanometers on the silver surface or the gold surface.
6 more elements
Dependencies are inferred from the claim text.