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公开(公告)号：US11717879B2
公开(公告)日：2023-08-08
申请号：US16092115
申请日：2017-04-10
发明人： Sandra Lehmann , Klaus Riemann , Nils Zimmer , Hermann Lieber , Jürgen Hübert
IPC分类号： B22C1/16 , B22C1/22 , B22C1/18 , B22C1/02 , B22C9/08 , C04B35/634 , C04B35/63 , C04B38/08 , C04B38/00
CPC分类号： B22C1/167 , B22C1/02 , B22C1/183 , B22C1/2253 , B22C1/2273 , B22C9/088 , C04B35/6303 , C04B35/63404 , C04B35/63476 , C04B38/0061 , C04B38/085 , C04B2235/3427
摘要： The present invention relates to the use of closed-pore microspheres of expanded perlite as a filler for producing moldings for the foundry industry, to a composition for producing moldings for the foundry industry, comprising closed-pore microspheres of expanded perlite as a filler, and a binder, the binder being selected from the group consisting of water glass, phenol-formaldehyde resins, two-component systems comprising as reactants a polyisocyanate and a polyol component containing free hydroxyl groups (OH groups), and starch, and also to moldings for the foundry industry and to a process for producing a molding for the foundry industry.
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公开(公告)号：US11603334B2
公开(公告)日：2023-03-14
申请号：US16617035
申请日：2018-05-30
发明人： Sandra Lehmann , Klaus Riemann , Nils Zimmer , Fabio Sola , Andreas Götz
IPC分类号： C04B38/00 , C04B33/04 , C04B33/14 , C04B35/63 , C04B35/64 , C04B38/02 , C04B38/06 , C04B18/02 , C04B35/16
摘要： What are described are a process for producing an insulating product for the construction materials industry or an insulating material as intermediate for production of such a product, and a corresponding insulating material/insulating product. Also described are the use of a matrix encapsulation method for production of composite particles in the production of an insulating product for the construction materials industry or of an insulating material as intermediate for production of such a product, and the corresponding use of the composite particles producible by means of a matrix encapsulation method.
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公开(公告)号：US11267760B2
公开(公告)日：2022-03-08
申请号：US16617329
申请日：2018-05-30
发明人： Sandra Lehmann , Klaus Riemann , Nils Zimmer , Hermann Lieber , Jürgen Hübert , Fabio Sola , Heike Mushardt
摘要： What are described are a process for producing an insulating product for the refractory industry or an insulating material as intermediate for production of such a product, and a corresponding insulating material/insulating product. Likewise described are the use of a matrix encapsulation process in the production of an insulating product for the refractory industry and a corresponding insulating product and/or an insulating material as intermediate for production of such a product.
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公开(公告)号：US10919086B2
公开(公告)日：2021-02-16
申请号：US15780838
申请日：2016-12-01
发明人： Sandra Lehmann , Klaus Riemann , Nils Zimmer , Hermann Lieber , Jürgen Hübert
摘要： A method for producing a feeder element is described. The method includes (a) producing composite particles having a particle size of less than 2 mm in a matrix encapsulation method with the following steps: (a1) producing droplets of a suspension from at least (i) one or more refractory substances, (ii) one or more of fillers having a bulk density in the range from 10 to 350 g/L, expandants, and pyrolysable fillers, (iii) as continuous phase, a solidifiable liquid, (a2) solidifying the droplets with the refractory substance(s) and density-reducing substance(s) are encapsulated therein, (a3) treating the hardened droplets to form composite particles, (b) mixing the composite particles with a binder and, optionally, further constituents to give a feeder composition, (c) shaping and curing the feeder composition to give a feeder element. Also described are a method for producing refractory composite particles and the use of the composite particles.
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