The Swatch Group Research and Development Ltd

Christophe Letondor

Claire Rannoux

Nicolas Francois

David Richard

Nicolas François

Nicholas David Spencer

Mathieu Ayer

An epilamization agent containing at least one compound including at least hydrophobic and oleophobic moieties arranged to impart epilame properties to the compound, and at least one hydrophilic moiety arranged to make the compound soluble in aqueous medium, the hydrophilic moiety being linked to the compound by at least one cleavable group. A method for coating a substrate with epilame, including: preparing an aqueous epilamization bath by solubilising such an epilamization agent, placing the substrate in contact with the epilamization agent in the epilamization bath, separating the hydrophilic moiety from the epilamization agent by cleavage, rinsing the substrate to eliminate the hydrophilic residues from the hydrophilic moiety and drying.

Epilamization agent comprising a cleavable linking group and epilamization method using such an epilamization agent

A substrate including a surface, at least one part of which is coated with an epilamization agent including at least one compound in the form of a statistical copolymer comprising M units, N units and optionally at least one P unit, linked by covalent bonds by their main chains and randomly distributed, where N is P is 

Substrate comprising a surface coated with an epilamization agent and method for epilamization of such a substrate

The invention relates to a copolymer and a substrate having a surface, at least one part of which is coated with an epilame agent comprising at least one compound in the form of a copolymer comprising V units, N units, optionally at least one M unit, and optionally at least one P unit, linked by covalent bonds by their main chains, wherein  The invention also concerns a method for coating such a substrate with epilame, said method comprising a step of checking the concentration of epilame agent in the epilame-coating bath by means of the tracer group and if necessary, a step of readjusting the concentration of epilame agent in the epilame-coating bath.

Substrate including a surface coated with an epilame agent and method for coating such a substrate with epilame

The invention relates to a method for epilamization of at least one portion of a substrate surface comprising the steps of:

Epilamization method of an element of a timepiece or piece of jewellery

The disclosure relates to a substrate comprising a surface at least part of which is coated with an epilamization agent, the epilamization agent including at least one compound in the form of a block copolymer comprising at least one block of M units linked by covalent bonds by their main chains, and at least one block of N units linked by covalent bonds by their main chains, the blocks being connected to each other by covalent bonds by their main chains in linear sequences, where M is a and N is 

The present invention relates to an agent in particular for the surface epilamization of an article comprising one or more molecules having the general formula (1)A-F&#x2003;&#x2003;(1)wherein: The invention pertains to the technical field of epilame for timepiece mechanical parts.

Growing community of inventors

Le Landeron, Switzerland

Christophe Letondor