专利号:US-2020148541-A1 优先权日:2017-06-01 标题 :An approach to a bottom-up synthesis of nanocarbons 发明人:GIDRON ORI; PHATANGARE SUNITA; DISHI OR; BEDI ANJAN 权利人:YISSUM RES DEV CO OF HEBREW UNIV JERUSALEM LTD 摘要:Provided is a method for the synthesis of a Ï€-conjugated system from oligofurans, under conditions involving cycloaddition.
专利号:US-6407299-B1 优先权日:1999-06-02 标 题:Alkyl magnesium catalyzed synthesis of ethylene and α-olefin polymers 发明人:SEN AYUSMAN; KIM JANG SUB 权利人:EXXONMOBIL RES & ENG CO; PENNSYLVANIA STATE RES FOUNDAT 摘要:The present invention is a two-component catalyst system comprising (a) an alkyl magnesium (MgR 2 ) component and (b) a Lewis acid component. The catalyst system is used for catalyzing the oligomerization and polymerization of ethylene and/or α-olefins to form homopolymers and copolymers. The products range from highly linear, high molecular weight, solid polymers to highly branched, lower molecular weight oils.
专利号:WO-2020257627-A1 优先权日:2019-06-20 标题:Synthesis of long-chain branched polypropylene using heterogenous ziegler-natta catalysts 发明人:CHUNG TZE-CHIANG; UZAWA TSUTOMU; GOTO KEISUKE; UOZUMI TOSHIYA; SUGANO TOSHIHIKO 权利人:PENN STATE RES FOUND 摘要:A process for preparing long-chain branched isotactic polypropylene (LCB-PP) is provided. The process includes copolymerizing propylene with an asymmetric diene of formula I using a heterogeneous iso-specific MgCl 2 -supported Ziegler-Natta catalyst. The copolymerization results in an isotactic polypropylene-styrene (PP-St) copolymer of formula II. The process includes pelletizing the PP-co-BSt copolymer in an extruder to produce the LCB-PP. n is an integer from 1 to 4, x is an integer between 500 and 10,000, and y is an integer between 1 and 10.
专利号:WO-0073359-A1 优先权日:1999-06-02 标题 :Alkyl magnesium catalyzed synthesis of ethylene and alpha-olefin polymers 发明人:SEN AYUSMAN; KIM JANG SUB 权利人:EXXONMOBIL RES & ENG CO 摘要:The present invention is a two-component catalyst system comprising (a) an alkyl magnesium (MgR2) component and (b) a Lewis acid component. The catalyst system is used for catalyzing the oligomerization and polymerization of ethylene and/or α-olefins to form homopolymers and copolymers. The products range from highly linear, high molecular weight, solid polymers to highly branched, lower molecular weight oils.
专利号:US-6160064-A 优先权日:1997-06-14 标题 :Ethylene enhancement of processes for synthesis of high melting theromoplastic elastomeric α-olefin polymers (PRE/EPE effects)
专利号:WO-9857996-A1 优先权日:1997-06-14 标题:ETHYLENE ENHANCEMENT OF PROCESSES FOR SYNTHESIS OF HIGH MELTING THERMOPLASTIC ELASTOMERIC α-OLEFIN POLYMERS (PRE/EPE EFFECTS)