Nippon Oil Company

Shinichi Yagi

Saburo Matsubara

Disclosed is a method of making ceramic articles which comprises the steps of shaping ceramic powder with the aid of an organic binder and firing the resulting shaped body, characterized in that a mixture of (A) 90 to 10% by weight of an isobutylene polymer and (B) 10 to 90% by weight of an acrylic polymer is used as the organic binder in an amount of 0.2 to 20 parts by weight per 100 parts by weight of the ceramic powder. The use of the aforesaid organic binder makes it possible to produce shaped bodies having high green strength and, moreover, dense fired products.

Method of making ceramic articles

Disclosed is a method of making ceramic articles which comprises the steps of shaping a composition for the manufacture of ceramics and firing the resulting shaped body, characterized in that the composition for the manufacture of ceramics contains (a) ceramic powder; (b) an organic binder comprising one or more member selected from the group consisting of homopolymers and copolymers derived from (1) bicyclo[2.2.1]heptene-2 and its derivatives, which are respresented by the formula ##STR1## where R.sup.1 is --H, --CH.sub.3, --CO.sub.2 CH.sub.3 or --OCOCH.sub.3, R.sup.2 is --H or --OCOCH.sub.3, and R.sup.1 is --OCOCH.sub.3 when R.sup.2 is --OCOCH.sub.3, and (2) dicyclopentadiene; and (c) a plasticizer and/or (d) a hydrocarbon solvent. This method makes it possible to produce green sheets having excellent flexibility and high tensile strength, dry-pressed bodies having high green strength, and dense fired products.

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Kawasaki, Japan

Shinichi Yagi