Abstract: Powder comprising particles of a curing agent selected from the group consisting of azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid and the anhydrides of said acids.

Abstract: Powder comprising substantially spherical particles of at least one compound selected from the group consisting of azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid, and the anhydrides of said acids, said at least one compound being distributed substantially uniformly throughout the entirety of each of said particles, said particles having a particle size distribution as follows: d90 - d10 d50 < 1.90 wherein: d50 is a particle diameter at which 50% of the particles have diameters which are greater or smaller than the d50 value; d90 is a particle diameter at which 90% of the particles have diameters which are smaller than the d90 value; d10 is the particle diameter at which 10% of the particles have diameters which are smaller than the d10 value; and d50 is 8 to 30 micrometers.

Abstract: An improved fluid energy mill having a curved-shaped insert having a leading edge and a trailing edge with an azimuthal angle of between 10.degree. and 300.degree. and a positive or zero angle of attack is disclosed. This mill provides for lower energy consumption while improving or maintaining product specifications, and improved production rates.

Abstract: A composition comprising a mononucleate solid crop protection particle coated with a water-insoluble coating material has a diameter in the range of 0.5 to 50.mu.. This composition is made by a process which results in substantial non-agglomeration of the coated particles. In a particular embodiment, a crop protection composition comprises a mononucleate solid crop protection particle coated with either wood rosin, rosin derivatives, waxes, fatty derivatives, sterols, long-chain sterol esters and sulfur. Alternatively, the coating material may be a water-insoluble synthetic latex polymer. The composition may be used in a mixture which also includes a crop protection chemical partner comprising a solid particle. The partner ordinarily degrades the solid crop protection particle when stored or aged together as a solid particle mixture. However, when the composition solid particle is coated, this degradation is prevented.

Abstract: An acid composition comprises a polyvalent carboxylic acid solid particle coated with a polymer. The acid composition may function as a cross-linking agent in a powder coating, which also includes a resin. The resin and the polymer of the acid composition may be the same, or they may be different. The mean particle size of the coated acid solid particles is in the range of 0.5 to 50 micrometers. When used in a powder coating, such coated solid particles reduce or eliminate sublimation of the acid cross-linking agent from the powder coating during the curing step. In addition, these coated solid particles increase the storage shelf-life of the powder coating in which they are used. Such coated particles also improve the flow characteristics of the powder coating during curing thereof and the gloss and surface quality of the final cured coating.

Abstract: A process for removing chloride impurities from TiO.sub.2 by injecting a gas selected from steam, air, nitrogen, or a mixture thereof, at a sonic or a supersonic velocity, a pressure of about 25-600 psi, and a temperature of about 140.degree.-650.degree. C., into the TiO.sub.2 to disperse it, and then separating the TiO.sub.2 from the gas and chlorides.