发明名称 |
Polymerization initiating system and method to produce highly reactive olefin functional polymers |
摘要 |
A method for producing highly reactive olefin polymers wherein at least 50 mol. % of the polymer chains have terminal double bonds, and a novel polymerization initiating system for accomplishing same. |
申请公布号 |
US9034998(B2) |
申请公布日期 |
2015.05.19 |
申请号 |
US201113328569 |
申请日期 |
2011.12.16 |
申请人 |
University of Massachusetts;Infineum Internatonal Limited |
发明人 |
Faust Rudolf;Dimitrov Philip;Kumar Rajeev;Emert Jacob;Hua Jun |
分类号 |
C08F4/00;C08F2/00;C08F4/14;C08F210/00;C08F10/00;C08F110/10 |
主分类号 |
C08F4/00 |
代理机构 |
Hamilton, Brook, Smith & Reynolds, P.C. |
代理人 |
Hamilton, Brook, Smith & Reynolds, P.C. |
主权项 |
1. A process for the preparation of polybutene having an exo-olefin content of at least 50 mol. %, wherein a reaction mixture of isobutene or an isobutene-containing monomer mixture in apolar polymerization medium is contacted with a pre-formed complex consisting essentially of a Lewis acid catalyst complexed with an oxygen and/or sulfur-containing Lewis base, and optionally, an amount of a solvent in which said Lewis acid catalyst is complexed with said Lewis base, and initiating polymerization of said reaction mixture with an initiator, wherein said Lewis acid catalyst is a Lewis acid of the formula MR″mYn, wherein M is a metal selected from Fe, Ga, Hf, Zr and W; R″ is a hydrocarbyl group; Y is halogen; m is 0 or an integer of 1 to 5; and n is an integer of 1 to 6, with the proviso that m+n is equal to the valency of metal M; and the initiator is a compound of the formula RX, wherein X is a halide; R is a hydrocarbyl group capable of forming a stable carbocation, and wherein the carbon linking group R to group X is tertiary, benzylic or allylic; and wherein said initiator is introduced into the reaction mixture prior to or subsequent to introduction of said catalyst. |
地址 |
Boston MA US |