Abstract:
An improved method for purifying titania contaminated kaolin clay by froth flotation which features the use an hydroxamate flotation collector at a neutral or mildly alkaline pH wherein a slurry of the impure clay is conditioned for the flotation step in a baffled conditioning apparatus provided with mean for imparting sufficient mechanical energy to heat a dispersed slurry of the impure clay before flotation.
Abstract:
The present invention provides a thermal paper composite precursor comprising (a) a substrate layer; and (b) a base layer positioned on the substrate layer, the base layer comprising a binder and at least one porosity improver wherein the thermal paper composite precursor has a thermal effusivity that is at least about 2% less than the thermal effusivity of porosity improver-less thermal paper composite precursor. The thermal paper composite precursor is useful in making thermal paper composite.
Abstract:
An opacifying kaolin clay containing slimes is treated with a low molecular weight crosslinkable cationic polymer to produce a coating clay composition that has high opacification capacity and good rheology without removing the slimes. In the processing the polymer is crosslinked and adheres selectively to the slimes.
Abstract:
precursor de compósito de papel térmico. trata-se de um precursor de compásito de papel térmico composto de (a) uma camada de substrato; e (b) uma camada de base posicionada sobre uma camada de substrato, sendo a camada de substrato composta de um aglutinante e, pelo menos, um agente de aperfeiçoamento de porosidade no qual o precursor de compásito de papel térmico apresenta uma efusividade térmica que é, pelo menos, aproximadamente 2% inferior à efusividade térmica do precursor de compósito de papel térmico sem um agente de aperfeiçoamento de porosidade. o precursor de compósito de papel térmico é útil na execução do compósito de papel térmico.
Abstract:
Un pigmento compuesto que comprende partículas de un óxido o silicato mineral como sustrato y, precipitado en la superficie de dichas partículas y unidos químicamente a dicha superficie, una multiplicidad de cristales de carbonato metálico polivalente cargados positivamente.
Abstract:
The present invention provides a thermal paper composite precursor comprising (a) a substrate layer; and (b) a base layer positioned on the substrate layer, the base layer comprising a binder and at least one porosity improver wherein the thermal paper composite precursor has a thermal effusivity that is at least about 2% less than the thermal effusivity of porosity improver-less thermal paper composite precursor. The thermal paper composite precursor is useful in making thermal paper composite.
Abstract:
Composite pigments comprising particles of silicate or oxide minerals having deposited thereon a multiplicity of particles of a metal carbonate as a result of in-situ precipitation.
Abstract:
The present invention provides a thermal paper composite precursor comprising (a) a substrate layer; and (b) a base layer positioned on the substrate layer, the base layer comprising a binder and at least one porosity improver wherein the thermal paper composite precursor has a thermal effusivity that is at least about 2% less than the thermal effusivity of porosity improver-less thermal paper composite precursor. The thermal paper composite precursor is useful in making thermal paper composite.
Abstract:
The present invention provides a thermal paper composite precursor comprising (a) a substrate layer; and (b) a base layer positioned on the substrate layer, the base layer comprising a binder and at least one porosity improver wherein the thermal paper composite precursor has a thermal effusivity that is at least about 2% less than the thermal effusivity of porosity improver-less thermal paper composite precursor. The thermal paper composite precursor is useful in making thermal paper composite.