Polybutadiene rubber.Polybutadiene rubber, such as the company's Buna bu·na n. A synthetic rubber made from the polymerization of butadiene and sodium. [Originally a trademark.] Noun 1. CB (NdBR) and Taktene (CoBR), is used in golf ball applications. An important parameter for the desired key features of the golf ball's core is said to be the coefficient of restitution The coefficient of restitution or COR of an object is a fractional value representing the ratio of velocities before and after an impact. An object with a COR of 1 collides elastically, while an object with a COR of 0 will collide inelastically, effectively "sticking" to (COR cor (kor) [L.] heart. acute cor pulmonale acute overload of the right ventricle due to pulmonary hypertension, usually due to acute pulmonary embolism. ). This reflects the difference in the speed of a golf ball core fired from an air cannon and its rebound velocity after hitting a steel plate. In the same way as NdBR reduces the rolling resistance Rolling resistance, sometimes called rolling friction or rolling drag, is the resistance that occurs when an object such as a ball or tire rolls. It is caused by the deformation of the wheel or tire or the deformation of the ground. of tires, it also is said to have a positive influence on the COR. The company's polybutadiene rubber also fulfills golf ball requirements for low moisture content. (Lanxess) Circle 111 on card |
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