PPG Industries is an American global supplier of paints, coatings, optical products, specialty materials, chemicals, glass, and fiberglass. With headquarters in Pittsburgh, Pennsylvania, PPG operates in more than 70 countries around the globe. Sales in 2013 were $15.1 billion. It is headquartered in PPG Place, an office and retail complex in downtown Pittsburgh, and is known for its glass facade designed by Philip Johnson. Wikipedia.
PPG Industries | Date: 2015-02-16
An electrical system responsive to overheating and/or electric arcing of an electrically conductive member, e.g. a heating member of an aircraft windshield, includes a first switch in a first current path, and a second switch in a second current path. The first current path is from an electrical power supply through the first switch, through an arc sensor to the heating member to the power supply. The second current path is from a temperature sensor monitoring the temperature of the heating member through the second switch to a temperature controller. When the temperature of the heating member is at or above a predetermined value, the temperature controller causes the first switch to open. When there is arcing, the second switch is moved to the open position. The temperature controller senses that the second switch is open and causes the first switch to open.
PPG Industries | Date: 2015-07-09
Methods for producing 1,5,7-triazabicyclo[4.4.0]dec-5-ene using a disubstituted carbodiimide, dipropylene triamine and optionally an ethereal solvent and/or an alcohol are disclosed. Use of 1,5,7-triazabicyclo[4.4.0]dec-5-ene produced by this method in an electrodepositable coating composition, and electrophoretic deposition of such coating onto a substrate to form a coated substrate, are also disclosed.
PPG Industries | Date: 2015-05-14
A low infrared absorbing lithium glass includes FeO in the range of 0.0005-0.015 wt. %, more preferably 0.001-0.010 wt. %, and a redox ratio in the range of 0.005-0.15, more preferably in the range of 0.005-0.10. The glass can be chemically tempered and used to provide a ballistic viewing cover for night vision goggles or scope. A method is provided to change a glass making process from making a high infrared absorbing lithium glass having FeO in the range of 0.02 to 0.04 wt. % and a redox ratio in the range of 0.2 to 0.4 to the low infrared absorbing lithium glass by adding additional oxidizers to the batch materials. A second method is provided to change a glass making process from making a low infrared absorbing lithium glass to the high infrared absorbing lithium glass by adding additional reducers to the batch material. In one embodiment of the invention the oxidizer is CeO
PPG Industries | Date: 2015-12-14
An uncured branched polyester-urethane resin prepared by free radical polymerization of an unsaturated polyester prepolymer having a polyol segment, an unsaturated polycarboxylic acid and/or an anhydride and/or ester thereof, and a urethane segment, wherein the polymerization occurs primarily by reaction of the unsaturation is disclosed. Coatings comprising the same are also disclosed, as are substrates coated at least in part with such coatings.
PPG Industries | Date: 2015-04-16
An organic light emitting diode (