Polyolefin resin and nucleating agent-containing composition

Abstract

The invention discloses a polyolefin resin and nucleating agent-containing composition. The composition is characterized in that: a nucleating agent is a polyalcohol diacetal-silica gel graft with a general formula (I). The polyolefin resin and nucleating agent-containing composition of the invention improves the stability of organic acetals, is highly environmentally-friendly, reduces the production cost, and particularly has remarkably improved mechanical properties and thermal properties.

Description

technical field The invention relates to a composition containing a novel nucleating agent and a polyolefin resin, in particular to a composition containing a polyalcohol diacetal-silica gel graft nucleating agent and a polyolefin resin. Background technique In order to make polyolefin resins have higher transparency and improve their physical properties and / or processing properties, foreign countries began to study polypropylene (PP) transparent nucleating agents for polypropylene resins in the 1960s, and in the early 1980s in the United States Start industrial application. Adding a nucleating agent to PP is one of the main methods to produce transparent PP. There are mainly two types of nucleating agents, α and β. Polyol acetal nucleating agents are the most widely used and fastest-growing type of α. PP nucleating agent (Zhao Guiliang, Shi Qinzhi, Shi Jiangong, etc., Progress in Synthesis of Sorbitol Acetal PP Nucleating Agent, "China and Foreign Energy", 2008, 13(1): 90-...

AI Technical Summary

Problems solved by technology

Although the diacetal composition can lower the melting point and improve the dispersibility of the nucleating agent, the preparation process of the diacetal composition is complicated, and the cost is obviously increased, and at the same time, the polyolefin composition containing the diacetal composition Rising costs of objects and their molded products

Yet the polyolefin resin that contains above-mentioned diacetal nucleating agent still has the shortcoming that smell is big, although the polyolefin resin that contains the diacetal composition of various modified treatments has certain effect on overcoming diacetal odor Progress (Wang Xiaoqiang, Li Jichun, the method for deodorization of dibenzylidene sorbitol nucleating agent, "Petrochemical Technology and Application", 2000, 20 (4): 268-272), but there is no essential improvement, Moreover, due to the increase in the cost of the diacetal nucleating agent, the cost of the polyolefin resin composition has increased, which has increased the burden on downstream users.

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