FIELD: chemistry.
SUBSTANCE: invention relates to a gypsum composition containing recycled gypsum and a foaming agent that contains at least one double salt of alpha-sulfonic fatty acid, to a method for its preparation, as well as to a product containing a gypsum composition in accordance with the invention. In addition, the present invention relates to the use of a foaming agent. The aqueous gypsum composition contains: (i) at least 40.0 wt.% of gypsum and ii) at least 0.002 wt.% of the foaming agent, which contains at least one double salt of alpha-sulfonic fatty acid per the total weight of the gypsum composition, while gypsum has a proportion of recycled gypsum of at least 0.5 wt.% per the total proportion of gypsum in the gypsum composition, wherein the proportion of recycled gypsum is recycled gypsum containing siloxane.
EFFECT: reduction in the density in the wet state of the aqueous gypsum composition, which has a proportion of recycled gypsum.
15 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| DOUBLE SALT AS A POWERFUL PRIMARY TENSIDE FOR CALCIUM SULFATE MIXTURES CONTAINING PROCESSED GYPSUM | 2018 |
|
RU2784833C2 |
| METHOD FOR PRODUCING GYPSUM-CONTAINING BUILDING MATERIAL AND BUILDING MATERIAL PREPARED THEREBY WITH KETENE DIMERS AS HYDROPHOBING AGENT | 2014 |
|
RU2655055C2 |
| METHOD TO DISPERSE PREGELATINISED STARCH IN WATER IN PRODUCTION OF GYPSUM ITEMS | 2007 |
|
RU2429131C2 |
| METHODS FOR MANUFACTURING LIGHT GYPSUM COMPOSITION WITH INTERNAL FOAM FORMATION AND PRODUCTS MADE FROM IT | 2017 |
|
RU2751075C2 |
| METHOD OF PRODUCING MIXTURE OF VERY LOW CONSISTENCY ALPHA AND BETA GYPSUM PLASTER | 2007 |
|
RU2458014C2 |
| GYPSUM PRODUCTS USING DISPERSANT WITH TWO REPEATING ELEMENTARY UNITS, AND PREPARATION METHOD THEREOF | 2006 |
|
RU2420471C2 |
| PLASTERBOARD OF GYPSUM, CONTAINING HIGH LEVEL OF CHLORIDE SALT AND STARCH LAYER, AS WELL AS RELATED METHOD | 2019 |
|
RU2789870C2 |
| METHOD OF PRODUCING PREFABRICATED CONSTRUCTION MATERIAL | 2015 |
|
RU2691239C2 |
| GYPSUM WALL BOARD WITH LOW DUSTING | 2007 |
|
RU2475361C2 |
| LIGHT GYPSUM FACING SLAB WITH HIGH STARCH CONTENT | 2006 |
|
RU2414440C2 |
