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公开(公告)号：US20220162379A1
公开(公告)日：2022-05-26
申请号：US17616952
申请日：2020-03-23
Abstract: The present disclosure relates to the technical field of the production of polyether polyols, and provided is a process for producing a low-odor polyether polyol, the process comprising the following steps: an initial polymerization reaction step, involving: adding an initiator and an alkaline catalyst into a reaction container, and then inputting an epoxy olefin into the reaction container for a polymerization reaction to obtain a mixed material; a circulation distribution polymerization step, involving: taking the mixed material, outputting same, splitting same and then spraying same into the reaction container at a high speed, circulating the above operations while inputting the epoxy olefin and maintaining a rotation speed of 90-105 r/min for stirring the mixed material that has been sprayed into the reaction container, continuing to proceed with the polymerization reaction, and curing same to obtain a crude polyether polyol; and a refining step, involving: taking the crude polyether polyol for a neutralization or dilution treatment to obtain a mixed solution of the crude polyether polyol, then aggregating a mixed solution stream by means of a hydrophilic medium, settling and separating to obtain the low-odor polyether polyol. The production process of the present disclosure has the advantages of a short processing time, a high yield and a low VOC content.
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公开(公告)号：US11261287B2
公开(公告)日：2022-03-01
申请号：US16316654
申请日：2017-07-11
Inventor： Yongjian Guan , Baoning Song , Yubo Li
IPC: C08G18/48 , C08F283/06 , C08G18/63 , C08G18/76 , C08G65/26 , C08J9/14 , C08G18/66 , C08G18/32 , C08F220/44 , C08L71/02 , C08L51/08 , C08G101/00
Abstract: A composition capable of substituting the use of styrene-acrylonitrile copolymer POP, comprising polyether polyol A having a hydroxyl value of 100-1000 mgKOH/g and a functionality of 4-8, and a polymer polyol having a hydroxyl value of 12-100 mgKOH/g, a functionality of 2-4, and a solid content of 4-45%, the branches thereof not containing polystyrene units. The polyurethane foam produced using the present composition to substitute the use of traditional styrene-acrylonitrile copolymer POP avoids the problem of styrene volatilisation due to the absence of styrene, and the produced polyurethane foam also maintains equivalent or even superior physical properties compared to the polyurethane foam made from styrene-acrylonitrile copolymer POP in the prior art; thus, the present compound is fully capable of substituting traditional styrene-acrylonitrile copolymer POP for the production of environmentally friendly, high rebound, and block-shaped soft polyurethane foam materials.
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公开(公告)号：US20240051883A1
公开(公告)日：2024-02-15
申请号：US17619546
申请日：2021-11-10
Inventor： Fuxian Fang , Xinyao He , Yubo Li
CPC classification number: C04B40/0039 , C04B24/122 , C04B24/2647 , C04B28/141
Abstract: The present disclosure belongs to the technical field of preparation of functional materials, and in particular relates to a grinding aid for cement and a preparation method therefor. The components of the grinding aid include a modified alcohol amine of a specific structure and a polycarboxylic acid polymer of a specific structure, and a mass ratio of the modified alcohol amine to the polycarboxylic acid polymer is (1-10):(40-49), and the early strength of the cement can be increased, the water consumption can be reduced, and the fluidity can be improved when the grinding aid is used in cement. The present disclosure adopts the combined action of the modified alcohol amine and the polycarboxylic acid polymer in specific ratios and structures, so that a synergistic effect can be achieved, and the respective performance advantages can be fully exerted.
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公开(公告)号：US11772064B2
公开(公告)日：2023-10-03
申请号：US17617149
申请日：2020-03-23
Inventor： Jing Meng , Zhilong Wei , Hui Wei , Yubo Li
CPC classification number: B01J19/1881 , B01J4/001 , B01J19/18 , B01J2203/00 , B01J2204/002 , B01J2204/005
Abstract: A reaction apparatus, comprising: a reaction kettle; a circulation loop, comprising a circulation pipeline and a circulator pump provided on the circulation pipeline, a discharging end of the circulator pump being communicated with the top of the reaction kettle by means of a circulation valve and a charging end of the circulator pump being communicated with the bottom of the reaction kettle by means of a block valve; a feeding loop, comprising a feeding pipeline and a bypass pipeline, the feeding pipeline being provided between the block valve and the circulator pump and being communicated with the circulation pipeline, the bypass pipeline being provided with a control valve, and one end of the bypass pipeline being communicated with the discharging end of the circulator pump and the other end thereof being communicated with the bottom of the reaction kettle; and a discharging loop, comprising a discharging pipeline provided between the circulator pump and the circulation valve and communicated with the circulation pipeline, the discharging pipeline being provided with a discharging valve.
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Patent Agency Ranking
公开(公告)号：US20220234022A1
公开(公告)日：2022-07-28
申请号：US17617149
申请日：2020-03-23
Inventor： Jing Meng , Zhilong Wei , Hui Wei , Yubo Li
Abstract: A reaction apparatus, comprising: a reaction kettle (1); a circulation loop, comprising a circulation pipeline (2) and a circulator pump (4) provided on the circulation pipeline (2), a discharging end of the circulator pump (4) being communicated with the top of the reaction kettle (1) by means of a circulation valve (3) and a charging end of the circulator pump (4) being communicated with the bottom of the reaction kettle (1) by means of a block valve (9); a feeding loop, comprising a feeding pipeline (7) and a bypass pipeline (5), the feeding pipeline (7) being provided between the block valve (9) and the circulator pump (4) and being communicated with the circulation pipeline (2), the bypass pipeline (5) being provided with a control valve (6), and one end of the bypass pipeline (5) being communicated with the discharging end of the circulator pump (3) and the other end thereof being communicated with the bottom of the reaction kettle (1); and a discharging loop, comprising a discharging pipeline (10) provided between the circulator pump (4) and the circulation valve (3) and communicated with the circulation pipeline (2), the discharging pipeline (10) being provided with a discharging valve (11).
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公开(公告)号：US20220325366A1
公开(公告)日：2022-10-13
申请号：US17616934
申请日：2020-03-23
Inventor： Junjian Fan , Cheng Wu , Jiuwei Yuan , Zhijun Li , Yubo Li
IPC: C13B50/00
Abstract: A sugar drawing apparatus and a polyether polyol production system comprising same. The sugar drawing apparatus comprises: a sugar storage container, a feed port being provided on the upper end of the sugar storage container and a sugar storage cavity being provided within the sugar storage container: a drawing pipeline having one end extending into the sugar storage cavity and the other end thereof extending out of the sugar storage container and communicated with a reaction container, and used for transferring sugar in the sugar storage cavity into the reaction container, and a sleeve sleeved on the outside of the drawing pipeline, one end of the sleeve extending into the sugar storage cavity and the other end thereof extending out of the sugar storage container and communicated with ambient air, and a flow channel for air to flow through being reserved between the sleeve and the drawing pipeline.
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公开(公告)号：US11440989B2
公开(公告)日：2022-09-13
申请号：US16685953
申请日：2019-11-15
Inventor： Yongjian Guan , Ping Li , Zhijun Li , Feng Wang , Yubo Li
IPC: C08G18/48 , C09K21/14 , C08G18/38 , C08G18/70 , C07C213/02 , C07C215/28 , C08G18/50 , C08G65/26 , C07C215/50 , C08J9/04
Abstract: Application of a Mannich base in a flame-retardant polyurethane material is provided. The Mannich base has a structure represented by a formula (I). In the Mannich base, flame-retardant groups, i.e., halogens are introduced at the second, fourth and sixth positions of a phenyl group, and flame-retardant elements, i.e., halogens and nitrogen are introduced into synthesized polyether polyol, giving the synthesized polyether polyol good flame retardance. The amount of active hydrogen in the Mannich base is small so that occurrence of side reactions during the synthesis of the polyether polyol is reduced, and the viscosity of the flame-retardant polyether polyol is lowered. Due to autocatalytic performance of tertiary amido in the flame-retardant polyether polyol, use of a catalyst can be reduced and even avoided during the synthesis. A preparation method of the Mannich base is also provided.
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公开(公告)号：US20220226773A1
公开(公告)日：2022-07-21
申请号：US17617265
申请日：2020-03-23
Abstract: An ammonia-containing tail gas absorption system, comprising at least two sets of absorption devices, wherein at least two transport pipelines are provided at inlets of some of the absorption devices, and the transport pipelines are used to communicate the absorption devices with an ammonia-containing tail gas outlet of a reactor or other absorption devices. Valves are provided on the transport pipelines, and the valves are used to control the connection and disconnection of the transport pipelines so as to switch the series-parallel relationship between the sets of absorption devices.
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公开(公告)号：US11214657B2
公开(公告)日：2022-01-04
申请号：US16685779
申请日：2019-11-15
Inventor： Yandan Chen , Ke Lai , Yubo Li
IPC: C08F220/04 , C08F220/06 , C08F222/04 , C08F222/06 , C08F216/04 , C08F216/08 , C08F216/12 , C08F226/02 , C08F226/04 , C08J3/12 , C04B24/26 , C08F20/06 , C08F22/06 , C04B103/32 , C08F222/02 , C08F216/14
Abstract: A preparation method of a powdery polycarboxylate superplasticizer is provided, including: mixing a superplasticizer monomer with water to produce a mixture, heating and melting the mixture to produce a melt system; carrying out a bulk polymerization reaction by adding an initiator, a chain transfer agent and an unsaturated carboxylic acid into the melt system, forming a polycarboxylate superplasticizer precursor; and neutralizing and pulverizing the polycarboxylate superplasticizer precursor to produce a powdery polycarboxylate superplasticizer. Water is added in the bulk polymerization and reacts with the superplasticizer monomer and the unsaturated carboxylic acid. While the bulk polymerization reaction is guaranteed to be efficiently carried out and the solid polycarboxylate superplasticizer is formed, the viscosity of a bulk polymerization reaction system is reduced. The superplasticizer is suitable for dry-mixed mortar, high-efficiency concrete and other products.
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