Abstract: The invention relates to a rheological additive in the form of a preactivated paste, comprising: A) at least one fatty acid diamide introduced in powder form, it being possible for the powder optionally to comprise, in addition to the diamide, hydrogenated castor oil, B) at least one organic plasticizer, the plasticizer being liquid at room temperature. A specific process for the preparation of this rheological additive, a composition comprising the additive, a process for the preparation of the composition and specific uses, in particular specific coatings obtained from the additive, are also disclosed.

Abstract: The invention relates to a rheological additive in the form of a preactivated paste, comprising: A) at least one fatty acid diamide introduced in the powder form, it being possible for said powder optionally to comprise, in addition to the diamide, hydrogenated castor oil, B) at least one organic plasticizer, said plasticizer being liquid at room temperature. A specific process for the preparation of this rheological additive, a composition comprising said additive, a process for the preparation of said composition and specific uses, in particular specific coatings obtained from said additive, are also concerned.

Abstract: An expendable and machinable pattern material capable of being cast in large blocks without shrinkage and machined to a casting shape useful in the lost pattern process of investment casting, the material consisting essentially of ethylene-vinyl resin, fatty acid ketone, and fatty acid.

Abstract: A mold release composition and a method of forming molded articles using the mold release composition. The mold release composition of the present invention comprises at least one low vapor pressure hydrocarbon fluid and may further include an acid bearing release modifying material. An effective amount of the mold release composition is applied to mold surfaces to facilitate the release of a molded article formed by curing a molding media on the mold surface. By virtue of the low vapor pressure of the hydrocarbon fluid, the mold release composition is nonhazardous, nonflammable and environmentally friendly, including moderate to high biodegradability.