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公开(公告)号：US11858030B2
公开(公告)日：2024-01-02
申请号：US17261130
申请日：2019-07-19
申请人： ASK Chemicals GmbH
发明人： Christian Priebe , Markus Bung , Sarah Voss , Jörg Körschgen
摘要： The subject matter of the invention are sizing compositions containing an aqueous carrier liquid, refractory base materials and CH-acidic compounds, as well as their use for casting molds, as well as casting molds coated with the sizing composition.
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公开(公告)号：US12023726B2
公开(公告)日：2024-07-02
申请号：US18012355
申请日：2021-07-09
申请人： ASK Chemicals GmbH
发明人： Christian Priebe , Matthias Peter
CPC分类号： B22C1/2213 , B22C1/2253 , B22C1/2273 , B22C9/10 , C08G18/0852 , C08G18/4063 , C08G18/542 , C08G18/6208 , C08G18/7671 , C08J5/005 , C08J2375/04
摘要： Molding material mixes that contain a polyurethane binder based on phenolic resins of the benzyl ether type and polyisocyanates are characterized by the inclusion of a polybutadiene derivative. In one case, the polybutadiene derivative has epoxide groups and hydroxyl groups. In another case, the polybutadiene derivative has succinic acid anhydride groups. Molds, cores and risers are produced using these molding material mixes. Inclusion of the polybutadiene derivatives results in a reduction of sand adhesions in the molding process.
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公开(公告)号：US20240042514A1
公开(公告)日：2024-02-08
申请号：US18012355
申请日：2021-07-09
申请人： ASK Chemicals GmbH
发明人： Christian Priebe , Matthias Peter
CPC分类号： B22C1/2213 , C08G18/7671 , C08G18/542 , C08G18/6208 , C08G18/4063 , C08G18/0852 , C08J5/005 , B22C1/2253 , B22C1/2273 , B22C9/10 , C08J2375/04
摘要： Molding material mixes that contain a polyurethane binder based on phenolic resins of the benzyl ether type and polyisocyanates are characterized by the inclusion of a polybutadiene derivative. In one case, the polybutadiene derivative has epoxide groups and hydroxyl groups. In another case, the polybutadiene derivative has succinic acid anhydride groups. Molds, cores and risers are produced using these molding material mixes. Inclusion of the polybutadiene derivatives results in a reduction of sand adhesions in the molding process.
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公开(公告)号：US11466117B2
公开(公告)日：2022-10-11
申请号：US16472380
申请日：2017-12-22
申请人： ASK Chemicals GmbH
IPC分类号： C08G18/65 , B22C1/22 , B22C9/02 , B22C9/10 , C08G18/08 , C08G18/18 , C08G18/32 , C08G18/54 , C08G18/76 , C08K3/36
摘要： The invention relates to a binder based on phenolic resins of the benzyl ether type and isocyanate compounds having at least two isocyanate groups, containing free phenol and free hydroxybenzyl alcohols in the polyol component. The invention further relates to mold material mixtures containing the binder and to cores, molds, or risers produced with the mold material mixtures and to the use thereof in metal casting.
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公开(公告)号：US10919085B2
公开(公告)日：2021-02-16
申请号：US16498075
申请日：2018-03-28
申请人： ASK Chemicals GmbH
发明人： Ingrid Ernst , Christian Priebe , Michael Richters
IPC分类号： B22C1/16 , B22C9/10 , C04B35/14 , C04B35/634
摘要： The subject matter of the invention is mold material mixtures for producing molds or cores for metal casting, consisting of at least one refractory base mold material, a binder and an additive based on factice. The invention also relates to a component system, a method for producing molds and cores using the mold material mixtures or the component system respectively, and to molds and cores produced by said method.
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公开(公告)号：US12037444B2
公开(公告)日：2024-07-16
申请号：US16961467
申请日：2019-01-11
申请人： ASK Chemicals GmbH
发明人： Christian Priebe
CPC分类号： C08G18/542 , B29C33/3807 , B29C33/3842 , C08G8/10 , C08K5/07 , C08K5/09 , C08K5/101 , C08K5/11 , C08K5/13
摘要： Benzyl ether-type phenolic resins are useful in either a phenolic resin polyurethane cold-box (PUCB) process or a phenolic resin polyurethane no-bake (PUNB) process. The benzyl ether-type phenolic resins contain at least one formaldehyde scavenger in the form of a beta-dicarbonyl compound, and an alpha-carbonyl-carboxyl compound, particularly glyoxylic acid, binders based on these phenolic resins, and isocyanate compounds having at least two isocyanate groups. The resins having the inventive concept exhibit low free formaldehyde content. The inventive concept extends to molding material blends containing the binder, and a method for producing cores, molds or risers.
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公开(公告)号：US11213881B2
公开(公告)日：2022-01-04
申请号：US16472441
申请日：2017-12-22
申请人： ASK Chemicals GmbH
发明人： Christian Priebe , Jens Müller , Heinz Deters , Philip Schneider , Frank Lenzen , Markus Dörschel
摘要： The object of the invention is a component system for producing a binder for metal casting on the basis of phenolic resins of the benzyl ether type and isocyanates containing non-polar solvents.
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公开(公告)号：US09889498B2
公开(公告)日：2018-02-13
申请号：US15308398
申请日：2015-04-30
申请人： ASK Chemicals GmbH
CPC分类号： B22C1/2253 , B22C1/10 , B22C9/02 , B22C9/123 , C04B35/14
摘要： The invention relates to mold material mixtures for producing molds and cores for metal casting, consisting of at least one refractory material, a binder based on resols and amorphous silicon dioxide. The invention also relates to a multicomponent system and methods for producing molds and cores using the mold material mixtures as well as molds and cores for metal casting produced according to this method.
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