Patent ID: 8822568

Claim:
A binder composition for self-curing mold formation, comprising at least one condensate (A) selected from furfuryl alcohol condensate and furfuryl alcohol/formaldehyde condensate, and an acid-curable resin (B), wherein about the at least one condensate (A), the presence ratio by mole of its/their furan rings (a) to the total of its/their methylol groups (b), methylene groups (c) and oxymethylene groups (d), a:(b+c+d), is from 1:1.00 to 1:1.08, wherein the content by percentage of the at least one condensate (A) is from 1.0 to 4.5% by weight, wherein the content by percentage of nitrogen in the binder composition is from 0.8 to 3.5% by weight, and wherein the condensate (A) has a weight average molecular weight of 390 to 3,000.