Method of making ceramic articles
AssigneeNippon Oil Co., Ltd.
InventorsSaburo Matsubara, Shinichi Yagi
Life of this patent
Estimating the term…
Abstract
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.
Claims4
A method of making a dense fired ceramic article which comprises the steps of mixing a ceramic powder with an organic binder mixture of (A) 90 to 10% by weight of an isobutylene polymer of number average molecular weight of the order of 300 to 3,000 and (B) 10 to 90% of an acrylic polymer having a glass transition temperature in the range of -70 degrees C. to 190 degrees C. and being selected from the group consisting of arcylic homopolymers and acrylic copolymers and copolymers of acrylic monomers and vinyl monomers in an amount of 0.2 to 20 parts by weight per 100 parts by weight of the ceramic powder, granulating the resulting powder-binder mixture, forming a green body of the resulting granulated admixture, and firing the green body provide a dense fired product.
Dependencies are inferred from the claim text.