METHOD OF PRODUCING PREFABRICATED CONSTRUCTION MATERIAL Russian patent published in 2019 - IPC C04B28/14 C04B40/00 C07C49/88 D21H17/17 

Abstract RU 2691239 C2

FIELD: construction.

SUBSTANCE: present invention relates to a method of producing gypsum-containing foamed prefabricated construction material and to a gypsum-containing foamed construction material containing an aqueous dispersion of an alkyl ketene dimer, at least one emulsifier from a group comprising starch, cellulose, a starch derivative or a cellulose derivative, and a condensation product of naphthalene sulphonic acid, phenol sulphonic acid and formaldehyde or naphthalene sulphonic acid, phenol, formaldehyde and urea. Invention is developed in dependent claims.

EFFECT: obtaining gypsum building material having high hydrophobicity and strength.

21 cl, 7 tbl, 10 ex

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Authors

Gerig Uve

Yans Ekkekhard

Shinabek Mikhael

Pikhler Martin

Pekmezdzhi Akif

Ergin Mekhmet

Dates

2019-06-11Published

2015-10-23Filed