Abstract:
The present invention relates to the use as antisoiling coating of a porous coating having a polysiloxane matrix and a pore volume such that the potential fill factor of the total volume of said coating by oleic acid is at least 25% by volume, having a pore content ranging from 25 to 70% by volume and not having photocatalytic properties. The antisoiling porous coating is self-cleaning, easy to clean and can be regenerated by simple washing. It is mainly intended for use in ophthalmic optics and proves to be very effective against sebum. In the preferred embodiment of the invention, this coating has a mesoporous structure.
Abstract:
The invention concerns an article comprising a substrate having a main surface covered with a coating part of which at least is mesoporous and has a refractive index profile with optical function, the variation of which is imposed by the mesopore content and/or the filling factor of the mesopores. The profile may be such that the refractive index varies depending on the distance to a given axis, or such that the refractive index variation is monotone decreasing along any axis perpendicular to the surface of the substrate underlying the mesoporous part of said coating and oriented away from the substrate. The invention also concerns methods for making said articles, which differ depending on the technique from which the refractive index profile is created. The invention is applicable to ophthalmological optics.
Abstract:
The present invention relates to the use as antisoiling coating of a porous coating having a polysiloxane matrix and a pore volume such that the potential fill factor of the total volume of said coating by oleic acid is at least 25% by volume, having a pore content ranging from 25 to 70% by volume and not having photocatalytic properties. The antisoiling porous coating is self-cleaning, easy to clean and can be regenerated by simple washing. It is mainly intended for use in ophthalmic optics and proves to be very effective against sebum. In the preferred embodiment of the invention, this coating has a mesoporous structure.
Abstract:
The invention relates to an article having a nanotextured surface with superhydrophobic properties, comprising a network of preferably regular vertical tabs, characterised in that the tab network fulfils the following conditions: the surface fraction of the tabs Øs is such that 3% = Øs = 13%, preferably 5% = Øs = 12%, preferably 5% = Øs = 13%, even better 5.5% = Øs = 13%, even better 6% = Øs = 13%, and better still 8% = Øs = 13%; the pitch p of the network is such that 100nm = p = 250 nm; the height h of the tabs is such that 100nm = h = 400 nm, preferably 250 = h = 400 nm, even better 300 = h = 400 nm; and the lateral surface of the tabs is inclined at most by an angle of ± 20°, preferably ± 10° or even better ± 5°, in relation to the vertical axis of the tabs.
Abstract translation:本发明涉及具有超疏水性质的纳米纹理表面的制品,其包括优选规则的垂直突片的网络,其特征在于,所述突片网络满足以下条件:所述突出部分的表面部分使得3%=Øs= 13 %,优选5%=Øs= 12%,优选5%=Øs= 13%,甚至更好5.5%=Øs= 13%,甚至更好6%=Øs= 13%,更好仍为8%=Øs= 13% ; 网络的节距p使得100nm = p = 250nm; 片的高度h使得100nm = h = 400nm,优选250 = h = 400nm,甚至更好300 = h = 400nm; 并且翼片的侧表面相对于翼片的垂直轴线最多倾斜±20°,优选±10°或甚至更好±5°的角度。
Abstract:
Methods for edging optical articles comprising two main faces, at least one of which being coated with an outermost layer comprising fixing the optical article to a chuck with a holding pad that adheres to both the optical article and the chuck, wherein the surface of the holding pad contacting the optical comprises an adhesive material; and edging the optical article with an edging device; wherein prior to fixing the optical article to the chuck, at least one temporary layer of an organic material is formed onto said outermost layer of the optical article, the organic material of the temporary layer comprising at least one organic compound having a fluorinated functional moiety and at least one linking functional moiety capable of establishing at least one intermolecular bond or interaction with the adhesive material of the holding pad. Optical articles obtained via these methods.
Abstract:
The article e.g. ophthalmic lens comprises a network of regularly nanotextured vertical blocks such as parallelepipeds, cylinders, truncated cones or pyramids having a surface fraction (phi ) of 8= phi = 10%, a pitch (p) of 100= p= 250 nm and a height (h) of 150= h= 350 nm. Lateral surfaces of the blocks are inclined to an angle of +- 5[deg] with respect to a vertical axis of the blocks that have rounded tip. The nanostructured surface has an antifouling layer and a roughness (r) of 2.5= r= 3.5, and is partially coated with a hydrophobic material layer having a thickness of 1-5 nm.
Abstract:
The article e.g. ophthalmic lens comprises a network of regularly nanotextured vertical blocks such as parallelepipeds, cylinders, truncated cones or pyramids having a surface fraction (phi ) of 8= phi = 10%, a pitch (p) of 100= p= 250 nm and a height (h) of 150= h= 350 nm. Lateral surfaces of the blocks are inclined to an angle of +- 5[deg] with respect to a vertical axis of the blocks that have rounded tip. The nanostructured surface has an antifouling layer and a roughness (r) of 2.5= r= 3.5, and is partially coated with a hydrophobic material layer having a thickness of 1-5 nm.
Abstract:
Article ayant une surface à propriétés superhydrophobes comportant un réseau de plots verticaux, de préférence réguliers, nanotexturée, caractérisé en ce que le réseau de plots satisfait les conditions suivantes :- la fraction surfacique des plots Øs est telle que 3%