Abstract: The invention relates to indicator ink compositions that contain a water-based dispersion of a phenol-formaldehyde resin, at least one colorant and an amine-terminated catalyst. These indicator ink compositions are fixed to a surface, such as by drying, and respond to specific conditions of time, temperature, humidity, pressure and the presence or absence of certain chemicals by changing color. Compositions provide a means for detecting exposure to a predetermined condition and can be fixed or otherwise attached to nearly any article or designed into patterns on materials. Exposure of the indicator ink to the specific condition, the indicator ink provides a permanent detectable record of the event. Further, by varying the amount of amine-terminated catalyst in the formulation, the specific conditions at which the indicator composition will change color can be altered. Such compositions are specifically useful for determining the effectiveness of a sterilization process.

Abstract: The invention relates to a surface coating composition comprising a latex-base paint having dispersed therein particles of a Group VIII metal, the metal rendering the surface coating composition capable of retaining a magnetized object, and to a method for making a paint composition comprising: preparing the paint composition; and dispersing in the prepared paint composition an amount of a Group VIII metal such that the ratio of the metal to the paint composition is from about 5 pounds to about 9 pounds metal to about 1 gallon paint, and finally to a method for hanging an article on a wall comprising: mixing a paint composition having Group VIII metal particles dispersed therein; applying the paint composition to the wall; affixing a magnet to the article; and, touching the article having the magnet affixed thereto to the wall. The invention also relates to a encapsulating means for iron particles comprising a paint composition containing an encapsulating agent.

Abstract: Water-dispersible, storage-stable pulverulent compositions of matter, well adopted as adjuvants for hydraulic binders used in the construction industry, comprise particulates of a water-insoluble film-forming vinyl and/or acrylic polymer, e.g., a vinyl ester, alkyl(meth)acrylate or vinylaromatic homopolymer or copolymer, containing from 0.5 to 20 parts by weight of at least one silicone, e.g., an alkali or alkaline earth metal organosiliconate or a liquid organopolysiloxane, per 100 parts by weight of such film-forming polymer.