摘要:
Provided is a process for producing a coating on a substrate comprising one or more steps of crushing a dried layer of a foamed aqueous coating composition, wherein the aqueous coating composition comprises a collection of multi-stage copolymer particles having a weight average diameter of 2-20 μm, wherein said multi-stage copolymer particles comprise a core having a glass transition temperature (Tg) of 20° C. or less. Also provided is a coated substrate made by that process.
摘要:
A foamed, opacifying element has a porous substrate composed of woven yarn strands composed of a thermoplastic polymer-coated multifilament core. It has a dry foamed composition on an opposing surface of the substrate, which includes: (a) 0.1-40 weight % of porous particles; (b) 10-80 weight %; (c) 0.2-50 weight % of one or more additives selected from the group consisting of dispersants, plasticizers, flame retardants, optical brighteners, thickeners, biocides, fungicides, tinting colorants, metal flakes, and inert inorganic or organic fillers; (d) less than 5 weight % of water; and (e) at least 0.002 weight % of an opacifying colorant different from all of the one or more additives of (c), which opacifying colorant absorbs electromagnetic radiation having a wavelength of 380-800 nm. The elements have a light-blocking value (LBV) of at least 4 and can have a bending stiffness that is greater than 0.15 milliNewtons-meter.
摘要:
A mesh suitable for use as a light attenuating screen is disclosed. The mesh may contain not less than two sheets of glass yarn, joined to form a mesh having a specific openness factor and coated with a polymer coating containing TiO2 particles, so that the glass yarn is separated from TiO2 particles by at least a portion of the polymer binder. A method for making a mesh suitable for use as a light attenuating screen is also disclosed.
摘要:
A foamed, opacifying element having a target light blocking value (LBVT) and a target porous substrate is prepared by determining the light blocking value (LBVS) of the target porous substrate; calculating the LBVT-S difference; choosing a foamable aqueous composition; determining a dry coating weight for the chosen foamable aqueous composition (when foamed); and using the dry coating weight to form the single dry opacifying layer as the only layer disposed on the target porous substrate, such that the single dry opacifying layer has light blocking value that is equal to LBVT-S, ±10%. The chosen foamable aqueous composition comprises the essential components (a) through (e) described herein. The desired foamable aqueous composition can be chosen from a set of similar compositions to achieve the desired LBVT with the noted target porous substrate using suitable mathematical formula relating dry coating weight to light blocking value and a suitable data processor.
摘要:
A mesh suitable for use as a light attenuating screen is disclosed. The mesh may contain not less than two sheets of glass yarn, joined to form a mesh having a specific openness factor and coated with a polymer coating containing TiO2 particles, so that the glass yarn is separated from TiO2 particles by at least a portion of the polymer binder. A method for making a mesh suitable for use as a light attenuating screen is also disclosed.
摘要:
Laminates of fabric and microporous polymeric substrates are taught which have enhanced oleophobic and hydrophobic properties. The enhanced properties are obtained by contacting the laminate or any of its components with an aqueous dispersion of polymer particles of an organic polymer having pendent fluorinated alkyl groups and in which the particles are very small, being on the order of 0.01-0.1 micrometer. The small size promotes uniformity of coating when the laminate or components are coated with the dispersion and then heated to flow the particles together.
摘要:
A screen includes a mesh substrate having an openness of greater than 30% when viewed at 0° incidence, the mesh substrate having a first major surface and a second major surface, the first major surface including a first coating, the first major surface having a first reflectance value, wherein the first reflectance value has an average value of greater than about 10% as measured by an EN410 standard and a diffuse reflection profile at all viewing angles from −89° to 89°, excluding an angle of direct illumination as measured by a scattering distribution function technique using a Goniometer, wherein the diffuse reflection profile provides a reduction in view through the mesh substrate when viewed from −89° to 89°.
摘要:
A foamable aqueous composition can be used to form foamed, opacifying elements with one or more dry foamed layers. These compositions generally contain: (a) 0.5 to 20 weight % of porous particles comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase. The porous particles have a mode particle size of 2 to 50 μm; (b) at least 20 weight % of a binder material; (c) 0.1 to 30 weight % of a combination of various additives including dispersants, plasticizers, inorganic or organic pigments and dyes, flame retardants, biocides, fungicides, optical brighteners, tinting colorants, metal flakes, and inorganic or organic fillers; (d) water; and (e) at least 0.001 weight % of an opacifying colorant different from (c). The foamable aqueous composition is suitably aerated, disposed on a porous substrate, dried, and crushed on the porous substrate to form a foamed, opacifying element.
摘要:
Foamable aqueous compositions can be used to form light-blocking and light-colored foamed, opacifying elements with one or more dry foamed layers. The compositions contain: (a) 0.05 to 20 weight % of porous particles comprising a continuous polymeric phase and a first set of discrete pores, the porous particles having a mode particle size of 2 to 50 μm; (b) at least 20 weight % of a binder material (that can be curable); (c) 0.1 to 30 weight % of one or more additives including dispersants, plasticizers, inorganic or organic pigments or dyes, thickeners, flame retardants, biocides, fungicides, optical brighteners, tinting colorants, metal flakes, and inorganic or organic fillers; (d) water; and (e) at least 0.001 weight % of an opacifying colorant different from (c), which opacifying colorant absorbs electromagnetic radiation. The foamable aqueous composition can be aerated, disposed on a porous substrate, dried, and crushed on that porous substrate.
摘要:
An improved drapery fabric, constructed of an open weave decorative fabric adhesively-bonded by a flexible inner bonding stratum to a flexible solar control film. The solar control film permits visible light transmission through the open weave decorative fabric and reduces heat loss, or gain, by reducing the flow of heat and air therethrough. In addition, the improved open weave drapery fabric reduces heat loss during winter months through the combined effects of reflective and barrier characteristics, as well as the stagnant air space created between the window glass and the improved drape.