FIELD: chemistry.
SUBSTANCE: invention relates to quick-drying gypsum products, specifically to a gypsum suspension used to make building articles, including gypsum board. The gypsum suspension contains water, a hydraulic component which contains gypsum plaster and a polycarboxylate dispersant. The dispersant has two repeating elementary units, where the first repeating elementary unit is a repeating elementary unit of monocarboxylic acid with olefinic unsaturation or ether or salt thereof, and the second repeating elementary unit is a vinyl or allyl group bonded to the polyether by an ether bond. The invention also relates to a gypsum board made from said suspension. The invention is developed in subclaims.
EFFECT: faster drying and short setting time.
20 cl, 3 ex, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MODIFIERS FOR GYPSUM SUSPENSIONS AND METHOD OF THEIR APPLICATION | 2006 |
|
RU2416581C2 |
| EFFICIENT APPLICATION OF DISPERSERS IN FOAM-CONTAINING WALL BOARD | 2006 |
|
RU2404148C2 |
| QUICK-DRYING GYPSUM PRODUCTS | 2006 |
|
RU2404334C2 |
| MODIFIED NATURAL GYPSUM AS FILLER FOR WALLBOARD | 2006 |
|
RU2401818C2 |
| METHOD OF PREPARING GYPSUM MORTAR WITH MODIFIERS AND PLASTICISERS | 2006 |
|
RU2417963C2 |
| METHODS FOR MANUFACTURING LIGHT GYPSUM COMPOSITION WITH INTERNAL FOAM FORMATION AND PRODUCTS MADE FROM IT | 2017 |
|
RU2751075C2 |
| GYPSUM PRODUCTS WITH HIGH-EFFICIENT HEAT-ABSORBING ADDITIVES | 2013 |
|
RU2628347C2 |
| GYPSUM SLURRY COMPRISING DISPERSANT | 2011 |
|
RU2592279C2 |
| GYPSUM BOARD COMPRISING A HIGH LEVEL OF SALT CHLORIDE AND A PERFORATED SHEET AND METHOD ASSOCIATED WITH THEM | 2019 |
|
RU2797758C2 |
| PLASTERBOARD OF GYPSUM, CONTAINING HIGH LEVEL OF CHLORIDE SALT AND STARCH LAYER, AS WELL AS RELATED METHOD | 2019 |
|
RU2789870C2 |
