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

IPC分类号： B22C1/22 ,  C08G18/76 ,  C08G18/54 ,  C08G18/62 ,  C08G18/40 ,  C08G18/08 ,  C08J5/00 ,  B22C9/10

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.

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

IPC分类号： B22C1/22 ,  B22C9/10 ,  C08G18/08 ,  C08G18/40 ,  C08G18/54 ,  C08G18/62 ,  C08G18/76 ,  C08J5/00

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.