| 摘要 |
PROBLEM TO BE SOLVED: To provide a molded part which is inexpensive, has a practical strength and durability, is prepared through an easy means and has a soil degradability. SOLUTION: This molded part comprises a powder material (A) which contains a hydraulic inorganic powder and a non-hydraulic powder in a weight ratio of from 5:95 to 90: 10, a water-soluble polymer (B), water (C) and a crosslinkable resin (D), and is obtained by mixing a mixture wherein the ratios of the water-soluble polymer (B) and the crosslinkable resin (D) are, against 100 pts.wt. powder material (A), from 3 to 15 pts.wt. and from 0.3 to 25 pts.wt., respectively, and then curing this mixture under a pressurized and heated condition. Preferably, the component (B) is a water-soluble polymer having acrylamide as the constituting monomer, and the component (D) is a crosslinkable resin (E) having an oxylane group and/or a crosslinkable resin (F) obtained through a reaction of an aromatic compound or a compound having an active hydrogen and formaldehyde. |
