CYCLISATION PROCESS OF FORMING A MULTIPLE RING COMPOUND
申请人:Loh Teck Peng
公开号:US20100228058A1
公开(公告)日:2010-09-09
The present invention relates to a cyclisation process of forming a multiple ring compound from an isoprenoid compound. The cyclisation process involves reacting the isoprenoid compound with an acetal initiator under conditions sufficient to form the multiple ring compound. The isoprenoid compound is contacted with an initiator an optionally with a catalyst. Cyclisation occurs by reaction of the initiator with the isoprenoid compound. Cyclic acetal compounds wherein the acetal forms part of 6-membered unsaturated ring are also defined.
SOLID CATALYST FOR OLEFIN POLYMERIZATION AND PROCESS FOR PRODUCING OLEFIN POLYMER
申请人:Sumitomo Chemical Company, Limited
公开号:US20130072648A1
公开(公告)日:2013-03-21
A solid catalyst for olefin polymerization and a process for producing an olefin polymer are provided. The polymer has a small content of a component which is dissolved out into a low temperature organic solvent, such as a low-molecular weight component and an amorphous component. The solid catalyst is obtained by bringing a solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and an aliphatic carboxylate; an organoaluminum compound; and a compound represented by formula (I) into contact with each other:
wherein R
1
is a hydrocarbyl group having 1 to 10 carbon atoms, R
2
is a hydrogen atom, a halogen atom or a hydrocarbyl group having 1 to 16 carbon atoms, and the R
1
the R
2
groups are independently the same or different, and the respective R
1
groups and R
2
groups may be joined with each other to form a ring.
US8227645B2
申请人:——
公开号:US8227645B2
公开(公告)日:2012-07-24
US8629268B2
申请人:——
公开号:US8629268B2
公开(公告)日:2014-01-14
[EN] CYCLISATION PROCESS OF FORMING A MULTIPLE RING COMPOUND<br/>[FR] PROCÉDÉ DE CYCLISATION DESTINE A FORMER UN COMPOSE A CYCLES MULTIPLES
申请人:UNIV NANYANG
公开号:WO2007097719A1
公开(公告)日:2007-08-30
[EN] The present invention relates to a cyclisation process of forming a multiple ring compound from an isoprenoid compound. The cyclisation process involves reacting the isoprenoid compound with an acetal initiator under conditions sufficient to form the multiple ring compound. The isoprenoid compound is contacted with an initiator an optionally with a catalyst. Cyclisation occurs by reaction of the initiator with the isoprenoid compound. Cyclic aceta compounds wherein the acetal forms part of 6-membered unsaturated ring are also defined. [FR] La présente invention concerne un procédé de cyclisation destiné à former un composé à cycles multiples à partir d'un composé d'isoprénoïde. Le procédé de cyclisation comprend la mise en réaction du composé d'isoprénoïde avec un amorceur acétalique dans des conditions suffisantes pour former le composé à cycles multiples. Le composé d'isoprénoïde est mis en contact avec un amorceur, et éventuellement, avec un catalyseur. La cyclisation a lieu par réaction de l'amorceur avec le composé d'isoprénoïde. L'invention concerne également des composés cycliques d'acétal, l'acétal faisant partie d'un cycle insaturé à 6 chaînons.