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1. (WO2018127413) SIZING COMPOSITION FOR THE FOUNDRY INDUSTRY, CONTAINING PARTICULATE, AMORPHOUS SILICONE DIOXIDE AND ACID

Pub. No.:    WO/2018/127413    International Application No.:    PCT/EP2017/083745
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Thu Dec 21 00:59:59 CET 2017
IPC: B05D 7/24
Applicants: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
Inventors: JATTKE, Andreas
LUSTIG, Christian
SACHAU, Sabrina Maria
SEEGER, Klaus
Title: SIZING COMPOSITION FOR THE FOUNDRY INDUSTRY, CONTAINING PARTICULATE, AMORPHOUS SILICONE DIOXIDE AND ACID
Abstract:
The invention relates to a sizing composition for use in the foundry, in particular comprising particulate, amorphous silicon dioxide (SiO2) and an aqueous phase with a pH value of at most 5, and to sized, water glass-bonded foundry shapes, in particular sized, water glass-bonded foundry molds and foundry cores, each of which comprising a sizing composition according to the invention. The invention further relates to the use of a sizing composition according to the invention for producing a coating on a water glass-bonded foundry shape and to a method for producing a water glass-bonded foundry shape (mold or core) which has been sized with a water-containing sizing material. A kit containing inter alia a sizing composition according to the invention is also disclosed.