Abstract: The present invention relates to an aqueous polyurethane coating composition comprising: 1) 1 to 99 wt. % of the reaction product of: a) a polyol component, which is soluble or dispersible in water and is the reaction product of a polyisocyanate component containing 50 to 100 wt. % of an aliphatic diisocyanate, a polyol component containing one or more polyether polyols and having an OH number of 25 to 350 mg KOH/g solids and an isocyanate-reactive component containing at least one group capable of salt formation; and b) polyisocyanate component, which is soluble or dispersible in water, has blocked isocyanate groups and is the reaction product of one or more polyisocyanates having an isocyanurate group content of 0 to 30 wt. %, a reversible, monofunctional blocking agent for isocyanate groups, a nonionic hydrophilic component and a stabilizing component which has 1 to 2 hydrazide groups and a molecular weight of 74 to 300 g/mol; and 2) 1 to 99 wt.

Abstract: The present invention relates to an aqueous polyurethane coating composition comprising: 1) 1 to 99 wt. % of the reaction product of: a) a polyol component, which is soluble or dispersible in water and is the reaction product of a polyisocyanate component containing 50 to 100 wt. % of an aliphatic diisocyanate, a polyol component containing one or more polyether polyols and having an OH number of 25 to 350 mg KOH/g solids and an isocyanate-reactive component containing at least one group capable of salt formation; and b) polyisocyanate component, which is soluble or dispersible in water, has blocked isocyanate groups and is the reaction product of one or more polyisocyanates having an isocyanurate group content of 2 to 30 wt. %, a reversible, monofunctional blocking agent for isocyanate groups, a nonionic hydrophilic component and a stabilizing component which has 1 to 2 hydrazide groups and a molecular weight of 70 to 300; and 2) 1 to 99 wt.

Abstract: The present invention relates to a glass hardening system and method capable of transition between configurations for annealing and tempering glass objects comprising a conveyor system, a glass object positioning system, a tempering chamber, and a plurality of temperature zones oriented to form a tunnel through which glass objects are conveyed by a conveyor system. The temperature zones can be set to implement a temperature profile for either annealing or tempering the glass objects. Furthermore, in an exemplary embodiment an annealing lehr can be configured to temper glass objects by making a portion of the conveyor system accessible to the glass object positioning system after preheating, such that the glass object positioning system can temporarily relocate the glass objects from the conveyor into a tempering chamber and then the glass objects are returned to the conveyor system.

Abstract: A plastic container is configured for high pressure containment of fluid. The plastic container includes a tubular body portion generally symmetric about a vertical axis, and a base portion unitary with the body portion and having a plurality of feet for supporting the container upright on a horizontal surface. In cross-section, the base of the container is defined by a first line comprising a series of curves of serially diminishing radius from the body portion through the axis to each of the feet. The series of curves having centers of curvature alternating between positions inside the container and positions outside the container.