Patent TW-200934818-A (TW)
Title: An impact modifier composition, an impact resistant composition, method of producing the same, and articles made therefrom
Inventor: VANEK CHARLES M
IPC: C08L23/06
Filed: 2008-11-28
Abstract: The instant invention is an impact modifier composition, an impact resistant composition, method of producing the same, and articles made therefrom. The impact modifier composition comprises (a) less than 30 percent by weight of high-density polyethylene, based on the weight of the impact modifier composition; and (b) at least 70 percent by weight of chlorinated polyethylene, based on the weight of the impact modifier composition. The method for producing the impact modifier composition comprises the steps of (1) selecting high-density polyethylene in a powder form; (2) selecting chlorinated polyethylene in a powder form; (3) uniformly admixing said high-density polyethylene and said chlorinated polyethylene; and (4) thereby producing said impact modifier composition, wherein said impact modifier composition comprises (a) less than 30 percent by weight of high-density polyethylene based on the total weight of the impact modifier composition, based on the weight of impact modifier composition; and (b) at least 70 percent by weight of chlorinated polyethylene, based on the weight of the impact modifier composition. The impact resistant composition comprises (1) at least 85 percent by weight of poly(vinyl chloride), based on the weight of the impact resistant composition; and (2) less than 10 percent by weight of an impact modifier composition, based on the weight of the impact resistant composition, comprising; (a) less than 30 percent by weight of high-density polyethylene, based on the weight of the impact modifier composition; and (b) at least 70 percent by weight of chlorinated polyethylene, based on the weight of the impact modifier composition; wherein the impact resistant composition has an instrumented dart drop impact of greater than 0. 90 inch-pounds per mil at -10 DEG C. The method for producing the impact resistant composition comprises the steps of (1) selecting poly(vinyl chloride); (2) selecting an impact modifier composition comprising; (a) less than 30 percent by weight of high-density polyethylene, based on the weight of the impact modifier composition; and (b) at least 70 percent by weight of chlorinated polyethylene, based on the weight of the impact modifier composition; (3) melt blending the poly(vinyl chloride) and the impact modifier composition; and (4) thereby producing the impact resistant composition comprising at least 85 percent by weight of poly(vinyl chloride), based on the weight of the impact resistant composition; and (2) less than 10 percent by weight of the impact modifier composition. The article comprises (1) at least 85 percent by weight of poly(vinyl chloride), based on the weight of the impact resistant composition; and (2) less than 10 percent by weight of an impact modifier composition, based on the weight of the impact resistant composition, comprising; (a) less than 30 percent by weight of high-density polyethylene, based on the weight of the impact modifier composition; and (b) at least 70 percent by weight of chlorinated polyethylene, based on the weight of the impact modifier composition; wherein the article has an instrumented dart drop impact of greater than 0. 90 inch-pounds per mil at -10 DEG C.