FIELD: chemistry.
SUBSTANCE: method includes treating the porous product with a water-repellent material comprising an aqueous suspension of microcapsules. The microcapsules comprise a core of a water-repellent polyorganosiloxane material and a shell of a silicone-based networked silicone-based polymer, wherein the microcapsules are produced by adding a water-reactive organosilicon compound to an aqueous emulsion of water-repellent polyorganosiloxane having a surfactant concentration of 0.01 to 5 wt %, whereby the water-reactive organosilicon compound condenses and polymerizes at the droplet interface emulsion to form the said microcapsules.
EFFECT: providing a water-repellent material with a low surfactant content, resulting in an acceptable hydrophobicity and water-repellent coating properties immediately after application.
8 cl, 3 tbl, 2 dwg 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| WATER REPELLENT ORGANOSILICON MATERIAL | 2013 |
|
RU2633008C2 |
| GRANULATED ORGANOPOLYSILOXANE PRODUCTS | 2011 |
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