Abstract: A process for beneficiating crude kaolin clay under defined conditions with a sufficient amount and concentration of aluminum chlorhydrate (0.5 to about 5.0 active wt. %) to improve the clay's ability to adsorb pitch during the process of making paper. The invention also relates to the treated clay and to the use of the clay in a papermaking process to absorb pitch and/or anionic trash.

Abstract: Sodium Aluminosilicates (SAMS) are produced by silicate/clay reactions under hydrothermal conditions, the SAMS being characterized by low oil absorption values and high total pore volumes. The SAMS products are useful as coating pigments for paper, paper fillers and paint pigments.

Abstract: A method and apparatus for calibrating or checking the calibration of vertical photometers. The invention may also provide easy and convenient assay results for diagnostic profiles. The invention comprises pre-dispensed amounts of a suitable reagent, chosen for the particular use, disposed in a vessel with an amount of a wetting agent or other means to yield a reproducible meniscus in the resulting control solution. The control solution is dried to leave a precise amount of dried reagent and other constituents in the vessel which can then be stored and distributed until subsequent use. The dried control solution can then be reconstituted to provide a standard having known absorbance and physical characteristics.

Abstract: Sodium Aluminosilicates (SAMS) are produced by silicate/clay reactions under hydrothermal conditions, the SAMS being characterized by low oil absorption values and high total pore volumes. The SAMS products are useful as coating pigments for paper, paper fillers and paint pigments.

Abstract: A method and device for calibrating or checking the calibration of vertical photometers. The invention may also provide easy and convenient assay results for diagnostic profiles. The invention comprises pre-dispensed amounts of a suitable reagent, chosen for the particular use, disposed in a vessel with an amount of a wetting agent to yield a reproducible meniscus in the resulting control solution. The control solution is dried to leave a precise amount of dried reagent and other constituents in the vessel which can then be stored and distributed until subsequent use. The dried control solution can then be reconstituted to provide a standard having known absorbance and physical characteristics.

Abstract: An anti-tack composition and method based on a kaolin clay/nonionic surfactant of intermediate HLB is disclosed where the surfactant is preferably an ethoxylated, acetylenic diol or octylphenal.

Abstract: High performance synthetic sodium aluminosilicate compositions, and the method of making the same by the hydrothermal reaction of certain delaminated kaolin clays with select sodium silicate reagents, result in enhanced performance flatting agents for paint systems and anti-block agents for plastic film applications.

Abstract: The present invention relates to slurries of synthetic alkali metal silicates with fine particles kaolin clay. The slurries consists of at least 50% solids which solids comprise an approximately 50:50 combination of the fine kaolin clay and the synthetic alkali metal silicate (SAMS). The integrated composition of the SAMS products is an entity having an overall composition ofxM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2 Owhere x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is an alkali metal, y is the number of miles of SiO.sub.2 in the unique SAMS composition, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The composition essentially comprises altered kaolin clay platelets with an integral rim or protuberance of essentially amorphous alkali metal silicate-kaolin reaction product. The slurry is useful in latex paint systems.

Abstract: The flow monitoring device comprises a housing having a passageway therethrough for liquid flow through the housing. The passageway has an inlet opening and an outlet opening. A first thermistor is provided for sensing the temperature of the liquid in the passageway at a place near the inlet opening. A heating resistor is provided for heating the liquid at a place near the outlet opening and a second thermistor is provided for sensing the temperature of the liquid at the place near the outlet opening. A control circuit controls the input of heat energy to the heating resistor for heating the liquid just enough to maintain a predetermined temperature differential between the first and second thermistors.

Abstract: This invention has particular utility in the field of absorption spectrophotometry or colorimetry, and is particularly applicable, when incorporated in such type of equipment, as a sample detector to enable direct readings to be taken in concentration or absorbance of sample fluids or the like.