DENTAL GYPSUM INVESTMENT COMPOSITION,申请号JP19960266608-传众专利搜索

DENTAL GYPSUM INVESTMENT COMPOSITION

申请公布号：JPH09192778(A)

申请号：JP19960266608

申请日期：1996.09.18

申请公布日期：1997.07.29

申请人：

G C:KK

发明人：HORIUCHI HARUHIKO;IIYAMA KENICHI;MAMADA KOICHI

分类号：A61C13/20;A61K6/027;B22C1/08;B22C9/02;B22C9/04;C04B28/14;(IPC1-7):B22C9/02

主分类号：A61C13/20

摘要：<p>PROBLEM TO BE SOLVED: To provide a dental gypsum investment composition capable of keeping a stable performance without removing fine particles caused by a pneumatic transportation at the time of producing and being used for the casting of a high m.p. alloy such as an alloy for baking ceramics, and having excellent heat resistance. SOLUTION: This composition is obtained by mixing 0.01-1.0 pts.wt. of tetrafluoro-ethylene resin with 100 pts.wt. of a mixed material composed ofα-hemihydrate gypsum as a binder, qualtz and/or cristobalite as a refractory material and one or more kinds selected among groups consisting of metallic oxide, metallic carbide and metallic nitride as an aggregate which may be replaced of a part of the refractory, and further mixing 0.01-0.05 pts.wt. of anion surfactant of one or more kinds selected among groups consisting of alkylbenzene sulfonate and alkyl sulfate thereinto.</p>