摘要:
The present invention provides a colored solar reflective system comprising (1) a particulate material having a substantially rutile crystal habit and having an average particle size of between about 0.5 μm and about 2.0 μm and (2) an organic pigment having a maximum absorption coefficient of about 5,000 mm−1 or greater in the visible light region, a maximum scattering coefficient of about 500 mm−1 or less in the visible light region and an average absorption coefficient of about 50 mm−1 or less in the infrared region. The solar reflective system, which may be used in a coating composition or as a composition from which articles can be formed, exhibits a dark, intense color while also providing enhanced total solar reflectance.
摘要:
The invention provides a method of characterising a scattering coloured pigment for use in the determination of the absorption and scattering coefficients of the scattering coloured pigment, the method comprising the step of obtaining a reflectance spectrum of a mixture of the scattering coloured pigment with a substantially non-absorbing scattering pigment at a plurality of different volume fractions wherein the substantially non-absorbing scattering pigment has a particle size greater than 0.6 micron. Also provided is a pigment characterisation system adapted to perform the method of the invention to characterise a scattering coloured pigment.
摘要:
The invention provides a method of characterizing a scattering colored pigment for use in the determination of the absorption and scattering coefficients of the scattering colored pigment, the method comprising the step of obtaining a reflectance spectrum of a mixture of the scattering colored pigment with a substantially non-absorbing scattering pigment at a plurality of different volume fractions wherein the substantially non-absorbing scattering pigment has a particle size greater than 0.6 micron. Also provided is a pigment characterization system adapted to perform the method of the invention to characterize a scattering colored pigment.
摘要:
The invention provides a layered colored solar reflective system comprising (i) a first layer comprising a first particulate material having a substantially rutile crystal habit and an average particle size within a range of about 0.55 μm and about 0.95 μm, dispersed in a vehicle and (ii) a second layer positioned on at least a portion of the first layer, the second layer comprising a second particulate material having a substantially rutile crystal habit and an average particle size within a range of about 1.0 μm and 1.6 μm, and a colorant dispersed in a vehicle. The layered color solar reflective system may be applied onto a structure to provide a dark, intense color as well as enhanced total solar reflectance.
摘要:
The invention provides a layered colored solar reflective system comprising (i) a first layer comprising a first particulate material having a substantially rutile crystal habit and an average particle size within a range of about 0.55 μm and about 0.95 μm, dispersed in a vehicle and (ii) a second layer positioned on at least a portion of the first layer, the second layer comprising a second particulate material having a substantially rutile crystal habit and an average particle size within a range of about 1.0 μm and 1.6 μm, and a colorant dispersed in a vehicle. The layered color solar reflective system may be applied onto a structure to provide a dark, intense color as well as enhanced total solar reflectance.
摘要:
A process for forming a coating layer on a substrate comprising: depositing a thin film of a concentrated aqueous nano titania sol onto at least a portion of the substrate; exposing at least a portion of the deposited film to a sufficient amount of ultraviolet radiation in order to gel the film of aqueous sol; and drying at least a portion of the gelled portion, thereby forming the coating layer.
摘要:
The present invention provides a process for producing a concentrated aqueous nano titania sol in the mild pH range (4.0 to 10.0) comprising contacting an acidic nano titania sol with a dispersant and with an alkalizing agent, and subjecting the nano titania sol to membrane filtration until the nano titania sol contains more than 300 g TiO2 nanoparticles/dm3. The nano titania sol may further be subjected to a coating treatment within any of the steps of the above described process. The concentrated aqueous nano titania sol of this disclosure is suitable for use in a variety of applications, including providing UV protection and photochemically degrading or inactivating contaminants.
摘要翻译:本发明提供了一种在温和pH范围(4.0至10.0)中生产浓缩的纳米二氧化钛水溶液的方法,包括使酸性纳米二氧化钛溶胶与分散剂和碱化剂接触,并使纳米二氧化钛溶胶进行膜过滤直到 纳米二氧化钛溶胶含有超过300g TiO 2纳米颗粒/ dm 3。 可以在上述方法的任何步骤中进一步对纳米二氧化钛溶胶进行涂覆处理。 本公开的浓缩水性纳米二氧化钛溶胶适用于各种应用,包括提供UV保护和光化学降解或灭活污染物。
摘要:
The present invention provides a process for producing a concentrated aqueous nano titania sol in the mild pH range (4.0 to 10.0) comprising contacting an acidic nano titania sol with a dispersant and with an alkalizing agent, and subjecting the nano titania sol to membrane filtration until the nano titania sol contains more than 300 g TiO2 nanoparticles/dm3. The nano titania sol may further be subjected to a coating treatment within any of the steps of the above described process. The concentrated aqueous nano titania sol of this disclosure is suitable for use in a variety of applications, including providing UV protection and photochemically degrading or inactivating contaminants.
摘要翻译:本发明提供了一种在温和pH范围(4.0至10.0)中生产浓缩的纳米二氧化钛水溶液的方法,包括使酸性纳米二氧化钛溶胶与分散剂和碱化剂接触,并使纳米二氧化钛溶胶进行膜过滤直到 纳米二氧化钛溶胶含有超过300g TiO 2纳米颗粒/ dm 3。 可以在上述方法的任何步骤中进一步对纳米二氧化钛溶胶进行涂覆处理。 本公开的浓缩水性纳米二氧化钛溶胶适用于各种应用,包括提供UV保护和光化学降解或灭活污染物。