公开(公告)号：US20240279452A1

公开(公告)日：2024-08-22

申请号：US18648964

申请日：2024-04-29

申请人： QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Aihua HE ,  Chenguang LIU ,  Huafeng SHAO

IPC分类号： C08L23/22 ,  C08F2/01 ,  C08F2/06 ,  C08F4/659 ,  C08F210/08

CPC分类号： C08L23/22 ,  C08F2/01 ,  C08F2/06 ,  C08F4/65912 ,  C08F210/08 ,  C08F2400/02 ,  C08F2800/20 ,  C08L2205/025 ,  C08L2205/035 ,  C08L2207/10

摘要： Disclosed are a high temperature blasting resistance isotactic polybutene alloy and a preparation method thereof. The isotactic polybutene alloy of the present invention comprises 1-40% of isotactic polypropylene in parts by mass, 0.1-10% of a polypropylene-polybutene-1 block copolymer in parts by mass, 35-95.9% of isotactic polybutene-1 of a medium molecular weight in parts by mass, and 3-15% of isotactic polybutene-1 of a high molecular weight in parts by mass. The alloy material is prepared using a method of segmented polymerization of propylene polymerization, high hydrogen content butene polymerization and low hydrogen content butene polymerization. The prepared isotactic polybutene alloy has excellent high temperature blasting resistance and high temperature hydrostatic pressure, is high in vicat softening temperature, and is applicable to pressure pipes.

公开(公告)号：US20180201714A1

公开(公告)日：2018-07-19

申请号：US15743781

申请日：2016-11-15

申请人： QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  SHANDONG HUAJU POLYMER MATERIALS CO., LTD. ,  CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO., LTD.

发明人： Aihua HE ,  Yunsheng MA ,  Huafeng SHAO ,  Gang YAO ,  Chenguang LIU ,  Bo LUAN ,  Riguo WANG

IPC分类号： C08F236/06 ,  C08F236/08 ,  C08F2/01 ,  C08F2/02 ,  C08F2/42 ,  C08F4/642

摘要： A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.