发明名称 |
POLYISOPRENE CYCLIZATION CATALYST AND METHOD OF PREPARATION THEREOF |
摘要 |
FIELD: rubber industry. SUBSTANCE: objective of invention is to provide catalyst allowing production of low-colored cyclopolyisoprene with good film-forming properties. Such catalyst is based on titanium tetrachloride and electron- accepting compound reacting with titanium tetrachloride and/or forming chelate complex with the latter. Electron- accepting compound is one selected from a certain group. Preferably, those electron-accepting compounds are used, which are soluble in organic solvents used in polyisoprene cyclization process. Titanium tetrachloride/electron- accepting compound complex is prepared preliminarily at 0 to 80 C for 1 to 60 min or directly in solution of polyisoprene to be cyclized, preferably at molar ratio of electron-accepting compound to titanium between 0.1:1 and 0.4:1. EFFECT: enabled production of cyclopolyisoprene with good film-forming properties and low-intensity coloration. 5 cl, 2 tbl, 23 ex |
申请公布号 |
RU2211225(C2) |
申请公布日期 |
2003.08.27 |
申请号 |
RU20010111902 |
申请日期 |
2001.04.27 |
申请人 |
GO KAUCHUKA IM. AKAD. S.V.LEBEDEVA" |
发明人 |
PRONJAEV V.N.;FEDOROV V.A.;VASIL'EV V.A.;KUTUZOV P.I.;BAZHENOV JU.P.;SIRAZITDINOVA R.D. |
分类号 |
C08C19/10;C08F4/16;C08F8/48 |
主分类号 |
C08C19/10 |
代理机构 |
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