Patents Examined by Hellender Karen A.
  • Sand casting caking agent
    Patent number: 4997860
    Abstract: A sand casting caking agent contains an acid-curable resin and an organosilicon compound of the general formula (I): ##STR1## in which R.sup.1 is hydrogen or an alkyl having from 1 to 6 carbon atoms, R is a substituted or nonsubstituted monovalent hydrocarbon group, Y is an alkoxy group having from 1 to 6 carbon atoms, n is an integer of from 1 to 6 and m is either 0 or 1. Casting molds containing the agent of the present invention exhibit superior moisture resistance.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: March 5, 1991
    Assignee: Toshiba Silicone Co., Ltd.
    Inventor: Keiji Kabeta