Abstract: A hair coloring composition comprising a coloring matter, a binder resin and an organic solvent, characterized in that the composition further contains an effective amount of at least one drying inhibitor selected from the group consisting of: a glyceryl stearate, a polyglyceryl stearate, a sorbitan stearate, a polyoxyethylene sorbitan stearate, a polyoxyethylene sorbitol stearate, a polyoxyethylene glyceryl stearate, and a propylene glycol stearate.

Abstract: A composite ceramic material that is stable and shows a high strength in the temperature range of room temperature to 1600.degree. C. as well as has a toughness high-enough to be used as structural material and a process for producing it are provided. This composite ceramic material is composed of a matrix substantially made up of Si.sub.3 N.sub.4 and Si.sub.2 N.sub.2 O and a dispersion phase substantially made up of SiC where the matrix contains 0.05% by weight or less of metal element impurities such as Al, Ca and Fe. SiC grains or fibers are dispersed in the dense matrix made up of Si.sub.3 N.sub.4 and Si.sub.2 N.sub.2 O fine grains, which are substantially free from element impurities except Si, C and O. According to one aspect of this invention, this ceramic material is produced by Si.sub.3 N.sub.4 with SiO.sub.2 to form matrix powders that contain 0.

Abstract: A process for producing polybutadiene essentially consisted of syndiotactic-1,2-polybutadiene in an aqueous medium includes a step off polymerizing diene essentially consisted of 1,3-butadiene in the presence of: (A) a catalyst composition including (a) a transition metal compound, and (b) an organometallic compound which includes a metal selected from the elements consisting off groups 1, 2, 12, and 13 of Periodic Table; (B) an initiator comprising at least one component selected from a group consisting of carbon disulfide, an isothiocyanate compound, and a xanthogenic compound; and (C) an inert organic liquid having a density of at least 1.10, thereby resultant particles of syndiotactic-1,2-polybutadiene have a diameter up to 2 min.