Title:
URETHANE HARDENING TYPE ORGANIC BINDER FOR MOLD, AND CASTING SAND COMPOSITION AND MOLD OBTAINED USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/059226
Kind Code:
A1
Abstract:
The present invention addresses the problems of: providing a urethane hardening type organic binder which can achieve an improvement in the strength of a mold and resistance to deterioration of the mold due to moisture, and which can advantageously obtain a mold in which packing density can be effectively increased; and providing a urethane hardening type organic binder for a mold, that can effectively improve mold strength which follows the mold being left to stand after shaping. This urethane hardening type organic binder is used for shaping a urethane-based mold, and is configured to contain, as constituent components, a polyol compound, a polyisocyanate compound, and additionally a reaction product of a basic first silane compound and hydrofluoric acid and a non-basic second silane compound.
Inventors:
SENDA YOSHIYA (JP)
TAKAMI AIICHIRO (JP)
TAKAMI AIICHIRO (JP)
Application Number:
PCT/JP2018/034612
Publication Date:
March 28, 2019
Filing Date:
September 19, 2018
Export Citation:
Assignee:
ASAHI YUKIZAI CORP (JP)
International Classes:
B22C1/22; C08G18/38; C08G18/54; C08G18/65; C08G18/77; B22C9/12
Domestic Patent References:
| WO2016183567A1 | 2016-11-17 | |||
| WO2018181814A1 | 2018-10-04 |
Foreign References:
| US20030042000A1 | 2003-03-06 | |||
| US20030004224A1 | 2003-01-02 | |||
| JP2012196700A | 2012-10-18 | |||
| JP2015188910A | 2015-11-02 | |||
| JPS6310038A | 1988-01-16 | |||
| US4540724A | 1985-09-10 | |||
| US4436881A | 1984-03-13 |
Attorney, Agent or Firm:
NAKASHIMA, Michio et al. (JP)
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