Methods of preparing sintered shapes and green shapes used...

Details Methods of preparing sintered shapes and green shapes used... Methods of preparing sintered shapes and green shapes used...

C - Chemistry, Metallurgy

04

B

C04B 35/00 (2006.01) C04B 35/26 (2006.01) C04B 35/45 (2006.01) C04B 35/565 (2006.01) C04B 35/581 (2006.01) C04B 35/634 (2006.01) C08L 23/26 (2006.01)

Patent

CA 2083428

2586B Title: METHODS OF PREPARING SINTERED SHAPES AND MethodS USED THEREIN Abstract of the invention The invention relates to a method of preparing sintered shapes, comprising the steps of forming a green body from a mixture comprising (A) a major amount of at least one inorganic powder with (B) at least one reaction product of an amine other than an alkanolamine with a hydrocarbyl-substituted carboxylic acylating agent or alkylalkyleneglycolacetic acylating agent; provided the reaction product is other than an alkylene oxide treated fatty monocarboxylic amide and provided that when the hydrocarbyl-substituted carboxylic acylating agent is a nonaromatic acylating agent, then the hydrocarbyl group is other than hydrocarbyl groups having an average of about 55 to about 110 carbon atoms; and sintering the body. Sintered shapes made from the methods of the present invention have relatively high fired densities and small uniform grain sizes; and low porosity. The reaction products of the present invention help disperse the inorganic powder. These reaction products improve deagglomeration of the inorganic powder and help prevent reagglomeration of the powder.

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