EP 2296836 B1 20131204 - CATALYSTS COMPRISING METHANE SULFONIC ACID FOR THE ACID HARDENING METHOD
Title (en)
CATALYSTS COMPRISING METHANE SULFONIC ACID FOR THE ACID HARDENING METHOD
Title (de)
METHANSULFONSÄUREHALTIGE KATALYSATOREN FÜR DAS SAÜREHÄRTUNGSVERFAHREN
Title (fr)
CATALYSEURS CONTENANT DE L'ACIDE MÉTHANE-SULFONIQUE POUR LE PROCÉDÉ DE DURCISSEMENT À L'ACIDE
Publication
Application
Priority
- EP 2009003643 W 20090522
- DE 102008024727 A 20080523
Abstract (en)
[origin: WO2009141158A1] The invention relates to a method for producing cores and molds for the foundry industry, wherein - a flowable fire-resistant primary molding material is provided. An acid is applied to the flowable fire-resistant primary molding material, thus obtaining an acid-coated fire-resistant primary molding material. A binder that can be cured by acid is applied to the acid-coated fire-resistant primary molding material, thus obtaining a fire-resistant primary molding material coated with a binder. The fire-resistant primary molding material coated with a binder is molded into a molded body, and - the molded body is cured, wherein the acid is a mixture of methane sulfonic acid and at least one further sulfur-free acid. The invention further relates to a mold material mixture as it is used in said method. With the method or the mold material mixture, casting molds can be produced having reduced emission of harmful compounds during casting.
IPC 8 full level
CPC (source: EP KR US)
B22C 1/10 (2013.01 - KR); B22C 1/22 (2013.01 - KR); B22C 1/224 (2013.01 - EP US); B22C 1/2253 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102008024727 A1 20091126; BR PI0912685 A2 20160126; BR PI0912685 B1 20180116; CN 102076440 A 20110525; EA 021549 B1 20150730; EA 201071344 A1 20110630; EP 2296836 A1 20110323; EP 2296836 B1 20131204; JP 2011520615 A 20110721; JP 5557293 B2 20140723; KR 101643703 B1 20160729; KR 20110010795 A 20110207; MX 2010012742 A 20101221; PL 2296836 T3 20140530; UA 101502 C2 20130410; US 2011073269 A1 20110331; US 8919421 B2 20141230; WO 2009141158 A1 20091126; ZA 201008061 B 20110928
DOCDB simple family (application)
DE 102008024727 A 20080523; BR PI0912685 A 20090522; CN 200980124623 A 20090522; EA 201071344 A 20090522; EP 09749648 A 20090522; EP 2009003643 W 20090522; JP 2011509899 A 20090522; KR 20107028541 A 20090522; MX 2010012742 A 20090522; PL 09749648 T 20090522; UA A201015488 A 20090522; US 99399409 A 20090522; ZA 201008061 A 20101111