Title:
BINDER, METHOD FOR MANUFACTURING SAME AND METHOD FOR MANUFACTURING CASTING SAND MOLD
Document Type and Number:
WIPO Patent Application WO/2019/208322
Kind Code:
A1
Abstract:
Provided are: a binder that shows excellent discharge properties at an inkjet nozzle head and can provide an uncured sand mold having good handling properties, when used in manufacturing a casting sand mold by an inkjet-type lamination shaping method wherein the binder is printed onto sand; a method for manufacturing the binder; and a method for manufacturing a casting sand mold with the use of the binder. More specifically, provided are: a binder to be used in a casting sand mold manufactured by an inkjet-type lamination shaping method, said binder comprising a resol-type phenolic resin which is obtained by reacting, in the presence of an alkali catalyst, an aldehyde (A1), a phenol (P1) and a compound (N) having at least two phenolic hydroxyl groups per molecule, or reacting an aldehyde (A1) with a novolac-type phenolic resin (N1), has a dispersion degree (Mw/Mn) of 1.0-3.5 and contains not more than 5% of residual phenolic monomers; a method for manufacturing the binder; and a method for manufacturing a casting sand mold.
Inventors:
KIMOTO SEIJI (JP)
Application Number:
PCT/JP2019/016273
Publication Date:
October 31, 2019
Filing Date:
April 16, 2019
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
B22C1/22; B22C9/02; B33Y70/00; C08G8/08
Foreign References:
| JP2015193035A | 2015-11-05 | |||
| JP2017515682A | 2017-06-15 | |||
| JP2014091132A | 2014-05-19 | |||
| JPH06262293A | 1994-09-20 | |||
| JP2015205337A | 2015-11-19 | |||
| JP2015193035A | 2015-11-05 |
Other References:
See also references of EP 3785820A4
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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