54results about How to "Low UV transmittance" patented technology

The ultraviolet / infrared absorbent low transmittance glass has a grayish, almost neutral color shade, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 5 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: 1.0 to 1.6 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; more than 0.019 wt. % and equal to or less than 0.05 wt. % CoO; more than 0.0008 wt. % and equal to or less than 0.003 wt. % Se; and more than 0.05 wt. % and equal to or less than 0.1 wt. % NiO. The glass with any one of thicknesses between 1.8 mm and 5 mm has a visible light transmittance (YA) measured by the C.I.E. illuminant "A" in a range from 5 to 25%, a solar energy transmittance (TG) of 5 to 25%, and an ultraviolet transmittance (Tuv) specified by ISO of not greater than 15%.

The present invention provides a coating composition capable of forming a coating film that is applicable to a variety of industrial products, particularly automobile exterior panels, while exhibiting a high lightness and a low ultraviolet transmittance at a wavelength of 420 to 480 nm. The present invention relates to a coating composition comprising a chloride process titanium oxide pigment, a yellow iron oxide pigment, a carbon black pigment having a primary average particle size of 15 to 80 nm, and a resin composition, which is a vehicle-forming component.

The ultraviolet / infrared absorbent low transmittance glass has an almost neutral color such as greenish gray, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: 1.25 to 1.5 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.01 to 0.019 wt. % CoO; more than 0.0008 wt. % and equal to or less than 0.003 wt. % Se; and 0.055 to 0.1 wt. % NiO. The glass with a thickness between 2 and 5 mm has a visible light transmittance (YA) in a range from 10% to 25% using illuminant "A", a solar energy transmittance in a range from 5% to 20% and an ultraviolet transmittance (Tuv) of not more than 15%.

To provide a heat-absorbing glass plate which satisfies both low solar transmittance and high visible light transmittance, presents a green color as transmitted light and contains a small number of coloring components. The heat-absorbing glass plate of the present invention has a solar transmittance of at most 42% calculated as 4 mm thickness, has a visible light transmittance (by illuminant A, 2° visual field) of at least 70% calculated as 4 mm thickness, and provides a transmitted light having a dominant wavelength of from 492 to 520 nm, and it is made of soda lime silica glass having substantially the following composition, as represented by mass % based on oxides. SiO2: 65 to 75%, Al2O3: more than 3% and at most 6%, MgO: at least 0% and less than 2%, CaO: 7 to 10%, total iron as calculated as Fe2O3: 0.45 to 0.65%, and TiO2: 0.2 to 0.8%, and contains substantially no member selected from the group consisting of CoO, Cr2O3, V2O5 and MnO, wherein the proportion of the mass of divalent FeO in the mass of total iron which is the amount of total iron as calculated as Fe2O3, is more than 42% and at most 60%.

The present invention provides a glass article using a glass composition including a base glass composition and colorants. The base glass composition includes, expressed in mass %: 65 to 80% of SiO2; 0 to 5% of Al2O3; 0 to 10% of MgO; 0 to 15% of CaO; 5 to 15% of MgO+CaO; 10 to 18% of Na2O; 0 to 5% of K2O; 10 to 20% of Na2O+K2O; and 0 to 5% of B2O3, and the colorants consist essentially of, expressed in mass %: 0.6% to 1.0% of T-Fe2O3; 0.026 to 0.8% of TiO2; 0 to 2.0% of CeO2; 0.01 to 0.03% of CoO; 0 to 0.0008% of Se; and 0.06 to 0.20% of NiO. The glass article has a grayish color tone, and has a visible light transmittance in a range of 15% to 40%, which is measured with the illuminant A at a thickness of 3.1 mm.