Abstract: A door hinge device comprises a door support member and a door mounting member. The door support member is provided with a tongue, and is attached to a refrigerator housing. The door mounting member is attached to a door, and is provided with a second coupling portion connected to the tongue. A shaft and a guide pin stand on the tongue, and each is loosely fitted with a cylindrical collar. The door mounting member is provided with a shaft fitting slot which extends along the depth of the refrigerator housing when the door is closed, and the shaft is fitted in the shaft fitting slot. A guide recess is formed at the rear portion of the second coupling portion to engage the guide pin.

Abstract: An agricultural chemical composition which has improved efficiency, long range effectiveness and decreased phytotoxicity to useful plants is prepared by mixing an agricultural chemical with a filmforming polymer having a soil fixity of at least 40% and a water vapor permeability of 400 - 1,500 g/m.sup.2 /24 hrs.

Abstract: A highly water-absorbent resin is produced by polymerizing (A) starch or cellulose, (B) at least one monomer having a polymerizable double bond which is water-soluble or becomes water-soluble by hydrolysis and (C) a crosslinking agent, and subjecting, if necessary, the resulting product to hydrolysis.