公开(公告)号：EP1947070A4

公开(公告)日：2011-05-18

申请号：EP06810922

申请日：2006-09-29

申请人： YOSHINO GYPSUM CO

发明人： TADA KATSUMI ,  YAMAKATA KOUJI ,  YOKOYAMA ITARU ,  KATSUMOTO KOJI

IPC分类号： C04B28/14 ,  C04B14/26 ,  C04B14/30 ,  C04B14/36 ,  C04B14/38 ,  C04B16/06 ,  C04B26/02 ,  C04B28/12 ,  E04B1/82 ,  E04B1/92 ,  E04C2/26 ,  G21F1/04 ,  G21F1/10 ,  G21F1/12

CPC分类号： E04C2/043 ,  C04B26/02 ,  C04B28/10 ,  C04B28/14 ,  C04B2111/00586 ,  C04B2111/0062 ,  C04B2111/00629 ,  C04B2111/00862 ,  C04B2111/60 ,  E04B2001/925 ,  Y02W30/97 ,  Y10T428/266 ,  C04B14/26 ,  C04B14/28 ,  C04B14/42 ,  C04B22/064 ,  C04B24/26 ,  C04B14/303 ,  C04B14/386 ,  C04B16/0675 ,  C04B14/30 ,  C04B18/24 ,  C04B14/36 ,  C04B16/0641 ,  C04B14/305

摘要： Provided is a building material with a higher specific gravity and/or radioactive-ray-shielding function while maintaining a workability equivalent to that of a conventional gypsum board. It relates to a gypsum-based building material manufactured by adding water to a composition in which a base material is a combination of a hydraulic gypsum and one kind or two or more kinds of dry-hardening calcium carbonate or calcium hydroxide or synthetic resin emulsions and an inorganic filler with a high specific gravity is compounded to it so that reaction and setting or drying and setting are conducted, wherein the composition is characterized by comprising 100 parts by weight of at least one kind or two or more kinds of base materials selected from the group consisting of calcium sulfate, calcium carbonate, calcium hydroxide and organic synthetic resin emulsions, and 50 - 3,000 parts by weight of at least one kind or two or more kinds of inorganic fillers whose true specific gravity is 3.5 - 6.0 which are selected from the group consisting of barium chloride, zinc oxide, aluminum oxide, titanium oxide, barium oxide, strontium carbonate, barium carbonate, and barium sulfate.