Abstract: Dispersed insoluble colored pigments are coated on the surface of mica and oxide-coated mica pigments by deposition in a precipitate of a polyvalent cation and an anionic polymeric substance. The resulting combination pigments have more than one color, depending on the angle of viewing.

Abstract: Improvements in multilayer light-reflecting film are effected by the use of thermoplastic polyester as the high refractive index component of a system in which two or more resinous materials form a plurality of layers.

Abstract: An iron blue coated substrate nacreous pigment which yields less than ten parts per million of water-soluble cyanide due to the stability thereof to heat during drying is prepared by the admixing of the substrate, ferric ion reactant, and ferrocyanide reactant under conditions such that the ferric ion and ferrocyanide reactants are in substantially stoichiometric proportions and the pH is at constant value within the range of 2.5-4.0, and adding an aluminum-containing reactant so as to form aluminum hydroxide in addition to the iron blue on said substrate. The product shows a brighter, cleaner, and purer blue color than iron blue coated substrate products prepared by other procedures.

Abstract: Unsupported metal oxide platey nacreous pigments are derived from metal oxide coated mica by a unique dissolution process and show higher luster and coverage than the pigment from which they are derived. If the metal oxide coated mica shows a reflection interference color, the unsupported product derived from it shows higher luster and greater reflection color intensity.

Abstract: A multilayer coextruded light-reflecting film is improved by utilizing a mixture of a polyolefin and ethylenevinyl acetate as one of the diverse resinous material which form the plurality of layers.

Abstract: Iron oxide coated mica nacreous pigments are improved by interposing a thin layer of titanium dioxide or aluminum oxide between the iron oxide and the mica.

Abstract: This invention relates to a titanium dioxide coated mica platey pigment which displays high luster or reflectivity in a suitable coating on a smooth surface, and which has a high resistance to change in appearance when subjected to weatherability stress. The titanium dioxide must be in the rutile crystal structure, the calcining of the titanium dioxide coated mica product must be carried out under rather extended time-temperature conditions, and the product requires a post-treatment with chromium III hydroxide.

Abstract: By addition of ferric ions to a ferrocyanide solution and adjustment of the pH, Iron Blue is directly precipitated and adheres to a mica or metal oxide coated mica substrate.

Abstract: Nacreous pigment products comprising mica particles coated with translucent layers consisting essentially of titanium dioxide in the rutile form. A process for the preparation of such pigment products is disclosed, involving treatment with tin compounds, so that the TiO.sub.2 coating will crystallize mainly in the rutile form rather than as anatase during calcination of the pigment. The rutile-coated mica exhibits markedly enhanced light stability as compared with anatase-coated mica pigment products.

Abstract: The invention disclosed is for an improved foamed mastic composition comprising a magnesia cement, building articles coated therewith in light porous foamed form having improved fire resistant and sound insulating properties, and a method of preparing such articles and composition.The foamed mastic composition prepared by the present invention is pumpable and sprayable, and upon setting or drying provides a highly porous, firmly-bonded coating upon metallic building members.

Abstract: Bismuth oxychloride-mica nacreous pigments are improved in luster by the deposit of hydrous titanium hydroxide. Depending on the amount of hydrous titanium hydroxide deposited, the nacreous pigment can also exhibit improved aqueous-organic phase transferability.

Abstract: Improvements in multilayer light-reflecting film are effected by the use of thermoplastic polyester as the high refractive index component of a system in which two or more resinous materials form a plurality of layers.