公开(公告)号：WO2019203883A1

公开(公告)日：2019-10-24

申请号：PCT/US2018/052786

申请日：2018-09-26

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： SANG, Yijun ,  HEMPHILL, Mark K. ,  KIM, Yongman ,  BARBER, James W.

IPC: C04B40/00

Abstract: An accelerator for accelerating the rate of hydration of calcined gypsum is disclosed. The accelerator comprises calcium sulfate dihydrate particles and a starch. The starch has a cold water solubility of at least about 25% (e.g., at least about 35%) and a viscosity of about 25 Brabender Units (BU) or less when the starch is in a 30% aqueous slurry at 92 °C. Also disclosed are a method of preparing an accelerator, method of hydrating stucco to form set gypsum, slurry, and method of making gypsum board.

公开(公告)号：WO2018013620A1

公开(公告)日：2018-01-18

申请号：PCT/US2017/041613

申请日：2017-07-12

Applicant: UNITED STATES GYPSUM COMPANY

Inventor： BARBER, James W. ,  PENG, Feng

IPC: G01N15/14

Abstract: Provided is a method for detecting respirable participles in a bulk material comprising particles. The method comprises: analyzing morphology of the particles; analyzing chemical composition of the particles; creating a profile of the particles, wherein each particle in the profile is characterized by its shape, size and chemical composition; selecting particles from the profile which match the size and chemical composition of a respirable particle; and calculating a percentage of the respirable particles in the bulk material.

Abstract translation: 提供了一种用于检测包含颗粒的散装材料中的可吸入分
析物的方法。 该方法包括：分析颗粒的形态; 分析颗粒的化学组成; 形成颗粒的轮廓，其中轮廓中的每个颗粒的特征在于其形状，尺寸和化学组成; 从该轮廓中选择与可吸入颗粒的尺寸和化学组成相匹配的颗粒; 并计算散装材料中可吸入颗粒的百分比。

公开(公告)号：EP3781539A1

公开(公告)日：2021-02-24

申请号：EP18789738.4

申请日：2018-09-26

Applicant: United States Gypsum Company

Inventor： SANG, Yijun ,  HEMPHILL, Mark K. ,  KIM, Yongman ,  BARBER, James W.

IPC: C04B40/00