The paper presents possibility of using biodegradable materials as parts of moulding sands’ binders based on commonly used in foundry

practice resins. The authors focus on thermal destruction of binding materials and thermal deformation of moulding sands with tested

materials. All the research is conducted for the biodegradable material and two typical resins separately. The point of the article is to show

if tested materials are compatible from thermal destruction and thermal deformation points of view. It was proved that tested materials

characterized with similar thermal destruction but thermal deformation of moulding sands with those binders was different.