Title:
MANUFACTURE OF WALL BOARD MATERIAL
Document Type and Number:
Japanese Patent JPS5560050
Kind Code:
A
Abstract:
To calcium lignin sulfonate is added a formulation of ammonium or sodium linear alcohol ether sulfate in a ratio to form an additive to calcined gypsum slurry which will reduce the water requirement and the heat needed to cure the wallboard made from the slurry.
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Inventors:
RICHIYAADO DEEBITSUTO RADOUIGU
Application Number:
JP13883979A
Publication Date:
May 06, 1980
Filing Date:
October 29, 1979
Export Citation:
Assignee:
COMBUSTION ENG
International Classes:
C04B24/16; C04B28/14; (IPC1-7): C04B13/14; C04B13/28
Domestic Patent References:
| JPS528027A | 1977-01-21 | |||
| JPS5291038A | 1977-08-01 |