公开(公告)号：US11142481B2

公开(公告)日：2021-10-12

申请号：US16814262

申请日：2020-03-10

Applicant: Beijing University of Technology

Inventor： Yali Wang ,  Jianfeng Wang ,  Yunfang Lv ,  Zhenguo Wang ,  Yuanzhong Han ,  Shichao Zhang

IPC: C04B24/00 ,  C04B7/147 ,  C07C213/06

Abstract: An additive for increasing an early activity index of nickel slag and a preparation method thereof, belonging to the field of additive technologies, are provided. The preparation method includes: successively adding maleic anhydride and triethanolamine to a reactor; setting the heating temperature to 50° C. for reaction, where a large amount of heat is released during the reaction; when the reaction temperature decreases to 60° C. after heat is released in the reaction, allowing triethanolamine maleate to react with a solution of bromine in carbon tetrachloride; adding water to the mixture, where the weight percentage content of the added water is 60%; separating and removing carbon tetrachloride from water; and conducting uniform stirring to obtain the additive. A molar ratio of the maleic anhydride, the triethanolamine, and bromine is (0.2-1):1:(0.2-1), and a molar ratio of the maleic anhydride to the bromine is 1:1.

公开(公告)号：US20230025140A1

公开(公告)日：2023-01-26

申请号：US17485790

申请日：2021-09-27

Applicant: Beijing University of Technology

Inventor： Mingzhang Lan ,  Tianrui Pei ,  Jianfeng Wang ,  Junjian Yang ,  Zhifeng Chen ,  Suping Cui ,  Yali Wang

IPC: C04B28/06 ,  C04B24/12 ,  C04B24/02 ,  C04B40/00

Abstract: A regulating cementitious material for promoting hydration of Portland cement is provided. The regulating cementitious material may include ingredients by weight as follows: ye'elimite, 27˜68 parts; anhydrite, 29˜68 parts; lithium nitrite, 2˜5 parts; ethylene glycol monoisopropanolamine, 0.14˜0.29 parts; triethanolamine acetate, 0.04˜0.09 parts; and polyglycerol, 0.04˜0.09 parts. An early strength of Portland cement can be improved through a cooperative hydration between minerals and an enhanced solubilization of a complexing agent.

公开(公告)号：US11548848B2

公开(公告)日：2023-01-10

申请号：US17401599

申请日：2021-08-13

Applicant: Beijing University of Technology

Inventor： Jianfeng Wang ,  Yan Song ,  Mingzhang Lan ,  Suping Cui ,  Yan Wang ,  Lei Chang ,  Yali Wang ,  Xiaoyu Ma

IPC: C07C213/08 ,  B01J27/02 ,  B01J31/02 ,  C04B24/12 ,  C07C213/10 ,  C07C215/08 ,  C04B103/52

Abstract: Synthesis and application of an alcohol amine with an extended main carbon chain are provided, belonging to the field of chemical building materials. Under the action of a catalyst, tertiary amine is subjected to a two-step substitution reaction, a hydrolytic reaction and a reducing reaction to obtain a novel alcohol amine (NAA). The novel alcohol amine as provided may have a better grinding aid effect than triethanolamine while is added into cement as a cement grinding aid, and thus has a wide application prospect.

公开(公告)号：US11858848B2

公开(公告)日：2024-01-02

申请号：US17485790

申请日：2021-09-27

Applicant: Beijing University of Technology

Inventor： Mingzhang Lan ,  Tianrui Pei ,  Jianfeng Wang ,  Junjian Yang ,  Zhifeng Chen ,  Suping Cui ,  Yali Wang

IPC: C04B24/02 ,  C04B24/12 ,  C04B28/06 ,  C04B40/00 ,  C04B28/14 ,  C04B103/00 ,  C04B103/10 ,  C04B7/32 ,  C04B11/30

CPC classification number: C04B28/065 ,  C04B24/023 ,  C04B24/122 ,  C04B24/123 ,  C04B28/14 ,  C04B40/0039 ,  C04B40/0042 ,  C04B7/323 ,  C04B11/30 ,  C04B2103/0008 ,  C04B2103/10 ,  C04B28/14 ,  C04B22/14 ,  C04B22/085 ,  C04B24/122 ,  C04B24/28 ,  C04B28/14 ,  C04B22/14 ,  C04B22/143 ,  C04B22/085 ,  C04B24/122 ,  C04B24/28 ,  C04B14/06 ,  C04B40/0039 ,  C04B22/085 ,  C04B22/143 ,  C04B24/02 ,  C04B24/04 ,  C04B24/121 ,  C04B7/323

Abstract: A regulating cementitious material for promoting hydration of Portland cement is provided. The regulating cementitious material may include ingredients by weight as follows: ye'elimite, 27˜68 parts; anhydrite, 29˜68 parts; lithium nitrite, 2˜5 parts; ethylene glycol monoisopropanolamine, 0.14˜0.29 parts; triethanolamine acetate, 0.04˜0.09 parts; and polyglycerol, 0.04˜0.09 parts. An early strength of Portland cement can be improved through a cooperative hydration between minerals and an enhanced solubilization of a complexing agent.

公开(公告)号：US20220234992A1

公开(公告)日：2022-07-28

申请号：US17401599

申请日：2021-08-13

Applicant: Beijing University of Technology

Inventor： Jianfeng Wang ,  Yan Song ,  Mingzhang Lan ,  Suping Cui ,  Yan Wang ,  Lei Chang ,  Yali Wang ,  Xiaoyu Ma

IPC: C07C213/08 ,  C07C213/10 ,  C07C215/08 ,  B01J31/02 ,  B01J27/02 ,  C04B24/12

Abstract: Synthesis and application of an alcohol amine with an extended main carbon chain are provided, belonging to the field of chemical building materials. Under the action of a catalyst, tertiary amine is subjected to a two-step substitution reaction, a hydrolytic reaction and a reducing reaction to obtain a novel alcohol amine (NAA). The novel alcohol amine as provided may have a better grinding aid effect than triethanolamine while is added into cement as a cement grinding aid, and thus has a wide application prospect.