The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2024
Filed:
Jul. 09, 2021
Applicant:
Ask Chemicals Gmbh, Hilden, DE;
Inventors:
Christian Priebe, Wulfrath, DE;
Matthias Peter, Hattingen, DE;
Assignee:
ASK Chemicals GmbH, Hilden, DE;
Primary Examiner:
Int. Cl.
CPC ...
B22C 1/22 (2006.01); B22C 9/10 (2006.01); C08G 18/08 (2006.01); C08G 18/40 (2006.01); C08G 18/54 (2006.01); C08G 18/62 (2006.01); C08G 18/76 (2006.01); C08J 5/00 (2006.01);
U.S. Cl.
CPC ...
B22C 1/2213 (2013.01); B22C 1/2253 (2013.01); B22C 1/2273 (2013.01); B22C 9/10 (2013.01); C08G 18/0852 (2013.01); C08G 18/4063 (2013.01); C08G 18/542 (2013.01); C08G 18/6208 (2013.01); C08G 18/7671 (2013.01); C08J 5/005 (2013.01); C08J 2375/04 (2013.01);
Abstract
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.