公开(公告)号：WO2006115496A1

公开(公告)日：2006-11-02

申请号：PCT/US2005/014503

申请日：2005-04-27

Applicant: UNITED STATES GYPSUM COMPANY ,  YU, Qiang ,  HINSHAW, Stewart ,  STREETER, Michael, M. ,  SONG, W., David ,  BOLIND, Michael ,  PRICE, Robert

Inventor： YU, Qiang ,  HINSHAW, Stewart ,  STREETER, Michael, M. ,  SONG, W., David ,  BOLIND, Michael ,  PRICE, Robert

IPC: C04B11/00

CPC classification number: C04B40/0039 ,  C04B28/14 ,  C04B2103/12 ,  C04B2111/0062 ,  C04B20/008 ,  C04B20/026 ,  C04B22/143 ,  C04B22/16 ,  C04B24/003

Abstract: A wet gypsum accelerator comprising ground product having a median particle size of from about 0.5 micron to about 2 microns and calcium sulfate dihydrate, water, and at least one additive selected from the group consisting of (i) an organic phosphonic compound, (ii) a phosphate-containing compound, or (iii) a mixture of (i) and (ii), is disclosed. Also disclosed are a method of preparing a wet gypsum accelerator, a method of hydrating calcined gypsum to form an interlocking matrix of set gypsum, a set gypsum-containing composition, and a set gypsum-containing product.

Abstract translation: 一种湿石膏促进剂，其包含中等粒度为约0.5微米至约2微米的研磨产物和二水合硫酸钙，水和至少一种选自（i）有机膦酸化合物，（ii） 含有磷酸酯的化合物，或（iii）（i）和（ii）的混合物。 还公开了制备湿法石膏促进剂的方法，将煅烧石膏水合以形成凝固石膏的互锁基质，含石膏组合物和含石膏的产品的方法。