发明名称 |
CONTINUOUS PROCESS FOR MAKING ROMP POLYCYLIC OLEFIN POLYMERS |
摘要 |
A continuous process for the solution polymerization of appropriate polycycloolefins in a ROMP zone to obtain a processable ROMP homo- or copolymer in solution, and subsequent hydrogenation of the ROMP (co)polymer without removing the residual ROMP catalyst and co-catalyst, provides an optical product having a mol wt Mw in the range from 50,000-300,000 and polydispersity Mw/Mn in the range from 1.3-5.0, more preferably from 1.3-3, the lower the polydispersity the more desirable the physical properties of the (co)polymer. The process comprises, (A) continuously polymerizing a substantially anhydrous solution of said monomer by ring opening metathesis polymerization in at least a first and a last reaction zone of a multi-zoned, single-stage, reaction vessel to form an unsaturated polymer cement essentially free of unreacted monomer; (B) hydrogenating said unsaturated polymer cement in the presence of an effective amount of a nickel-containing hydrogenation catalyst in an amount sufficient to produce a hydrogenated cement wherein more than 97 % of double bonds in said unsaturated polymer are converted to single bonds; (C) removing more than 99 % by weight of spent polymerization catalyst, used hydrogenation catalyst and filter aid present in said hydrogenated cement to produce an essentially solids-free hydrogenated cement; (D) devolatilizing said solids-free hydrogenated cement to produce a thickened hydrogenated polymer cement, and, (E) recovering a solid polymer which meets particle count specifications for optical grade polymer.
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申请公布号 |
WO9533786(A1) |
申请公布日期 |
1995.12.14 |
申请号 |
WO1995US06782 |
申请日期 |
1995.05.26 |
申请人 |
THE B.F. GOODRICH COMPANY |
发明人 |
TENNEY, LINWOOD, POWERS;YI, KONG, SUNG;LANE, PARLEY, CLIVE, JR.;WESSEL, JOHN, VICTOR;MARCHANT, NANCY, SUSAN |
分类号 |
C08G61/06;C08G61/08;G11B7/253;(IPC1-7):C08G61/08;C07C6/06 |
主分类号 |
C08G61/06 |
代理机构 |
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