| abstract |
The invention relates to - a transparent substrate coated with a stack of layers comprising one or more essentially mineral layer (s) having a non-zero volume fraction of at most 74% of pores of 30 to 100 nm, and a minimum thickness of at least the dimension of the largest pores it contains and, where appropriate, one or more layer (s) substantially mineral (s) dense (s) of thickness (s) at most equal ( s) at 400 nm, provided that two such dense layers are not adjacent, and at least one porous layer is covered with at least one other layer; and - a process for preparing this substrate, by a liquid, using a structuring latex. |