公开(公告)号：WO2019136119A1

公开(公告)日：2019-07-11

申请号：PCT/US2019/012139

申请日：2019-01-03

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： DONOVAN, Alexander ,  SCHLUDE, Joseph

IPC: G01N31/22 ,  C04B28/14

Abstract: A building construction product comprising a calcium compound and an indicator which comprises a reversable chelator of calcium ions, wherein the building construction product has a first color when the building construction product comprises water, wherein the first color is dependent on the presence of calcium ions in solution in the building construction product; and wherein the building construction product has a second color when the building construction product has solidified. Further aspects include methods of monitoring setting and drying reactions of building construction products, including setting-type joint compounds, drying-type joint compounds and plasters, where the building construction products comprise a calcium compound and an indicator which comprises a reversable chelator of calcium ions.

公开(公告)号：WO2019094297A1

公开(公告)日：2019-05-16

申请号：PCT/US2018/058939

申请日：2018-11-02

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： ROSENTHAL, Guy L. ,  MILLER, Charles J. ,  KINCAID, Tyler ,  SCHLUDE, Joseph

IPC: C04B28/14 ,  C04B40/06

CPC classification number: C04B28/14 ,  C04B22/10 ,  C04B22/142 ,  C04B22/147 ,  C04B22/16 ,  C04B24/123 ,  C04B40/065 ,  C04B2103/12 ,  C04B2103/22 ,  C04B2111/00637 ,  C04B2111/00689 ,  C04B40/0039 ,  C04B22/14 ,  C04B22/149 ,  C04B40/0042 ,  C04B22/06 ,  C04B22/148

Abstract: A ready-mixed setting type joint compound in which formation of gypsum seeds has been inhibited. A method for controlling a setting reaction by mixing a ready-mixed setting type joint compound with one or more metal ion control agents comprising aminopolycarboxylic acid and/or a salt thereof, and further mixing the setting type joint compound with one or more non-calcium phosphate compounds. The method may further comprise mixing the setting type joint compound with a set activator obtained by blending together a first set activator including a cadmium compound, lead compound and/or zinc compound and a second set activator including a ferrous compound, aluminum compound and/or manganese compound.