Modified polyolefin material for asphalt flexible packaging

【patent type】 patent for invention 【patent name】 modified polyolefin material for asphalt flexible packaging 【Applicant】 China National Petroleum Corporation [Inventor] Niu Chunge; Yu Xiaoyan; Li Lei; Yan Xixiong; Ouyang Bo; Yan Guizhen [Address of the main applicant] 100011 Intercity Building, No. 16 Ande Road, Dongcheng District, Beijing [Application Number] 03147793.3
【 Application Date 】 2003.06.27
[Examination and announcement number] 1566197
【 Validation announcement date 】 2005.01.19
【 Main Category 】 C08L23/12
[Classification] C08L23/12 B29C47/04 B65D85/84
【Sovereign Items】 1. A modified polyolefin material for asphalt soft packaging, characterized in that it consists of the following components (by weight): 0-69% of polypropylene, 2-70% of polyethylene, polyethylene Vinyl acetate copolymer 1 to 10%, ethylene propylene rubber 1 to 15%, stearic acid 0.5 to 5%.
[Instructions CD-ROM] D0503
[Abstract] The present invention relates to a polyolefin composition for bituminous flexible packaging material, characterized in that it is composed of 0-69% of polypropylene, 2-70% of polyethylene, 1 to 10% of polyvinyl acetate copolymer, ternary Ethylene-propylene rubber 1 to 15%, stearic acid 0.5 to 5%, using blending, granulation, blown film, sealing and cutting process or directly through the three-layer co-extrusion, blown film forming process, using the modified polypropylene made of The asphalt packaging bag can be filled with asphalt at 130°C without softening or cracking. It has good heat resistance, high mechanical strength and strong anti-aging ability. It can be mixed with asphalt and has good compatibility with asphalt. It does not affect the performance of asphalt. It can be directly used as an asphalt component to facilitate construction and use without polluting the environment.
【 Agency 】 Beijing Zhongyouyou Intellectual Property Agency Co., Ltd. [Agent] Jin Jie