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    • 1. 发明授权
    • Continuous process for making melt-processable optical grade ring-opened
polycyclic (co)polymers in a single-stage multi-zoned reactor
    • 在单级多区反应堆中制备可熔融加工的光学级开环多环(共)聚合物的连续方法
    • US5439992A
    • 1995-08-08
    • US254381
    • 1994-06-06
    • Kong S. YiLinwood P. TenneyParley C. Lane, Jr.John V. WesselNancy S. Marchant
    • Kong S. YiLinwood P. TenneyParley C. Lane, Jr.John V. WesselNancy S. Marchant
    • C08G61/06C08G61/08G11B7/253C08F232/08
    • C08G61/08G11B7/2538
    • 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 M.sub.w in the range from 50,000-300,000 and polydispersity M.sub.w /M.sub.n 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 hydrogenareal 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 hydrogeneated polymer cement, and, (E) recovering a solid polymer which meets particle count specifications for optical grade polymer.
    • 在ROMP区域中合适的聚环烯烃的溶液聚合以在溶液中获得可加工的ROMP均聚物或共聚物以及随后的ROMP(共)聚合物的氢化而不除去剩余的ROMP催化剂和助催化剂的连续方法提供光学 摩尔重量Mw在50,000-300,000的范围内,多分散性Mw / Mn在1.3-5.0,更优选1.3-3的范围内,多分散性越低,(共)聚合物的物理性质越好。 该方法包括:(A)在多区,单级反应容器的至少第一和最后反应区中通过开环易位聚合连续聚合所述单体的基本上无水的溶液,以基本上形成不饱和聚合物胶 没有未反应的单体; (B)在有效量的含镍氢化催化剂的存在下,使所述不饱和聚合物水泥的氢化量足以产生所述不饱和聚合物中多于97%的双键被转化为单键; (C)除去99重量%的废聚合催化剂,所用氢化催化剂和所述氢化水泥中的助滤剂以产生基本上不含固体的氢化水泥; (D)使所述不含固体的氢化水泥脱挥发分以产生增稠的氢化聚合物水泥,和(E)回收满足光学级聚合物的粒子数规格的固体聚合物。
    • 3. 发明授权
    • Dispersion polymerization of cycloolefins
    • 环烯烃的分散聚合
    • US4357449A
    • 1982-11-02
    • US321661
    • 1981-11-16
    • Kong S. Yi
    • Kong S. Yi
    • C08G61/00C08F2/08C08G61/06C08G61/08
    • C08G61/08
    • At least one cycloolefin monomer containing the norbornene group is polymerized by ring opening polymerization in a hydrocarbon diluent selected from C.sub.4 to C.sub.6 alkanes and isooctane that is a solvent for the monomer(s) but a nonsolvent for the resulting polymer, in the presence of a dispersant selected from terpolymers of ethylene, propylene, and dicyclopentadiene, copolymers of styrene and butadiene, and homopolymers of butadiene, whereby a dispersion of polymer particles in the diluent is produced having a particle size that is substantially smaller than polymer particles prepared in absence of the dispersant, which polymer particles, in the preferred embodiment, do not settle out almost immediately after stopping agitation and result in a much cleaner reactor than in slurry polymerization systems where dispersants are not used.
    • 含有降冰片烯基团的至少一种环烯烃单体通过在选自C 4 -C 6烷烃的烃稀释剂中的开环聚合和作为单体的溶剂的异辛烷而聚合,而在所得聚合物的存在下, 选自乙烯,丙烯和二环戊二烯的三元共聚物的分散剂,苯乙烯和丁二烯的共聚物和丁二烯的均聚物,由此制备聚合物颗粒在稀释剂中的分散体,其粒径基本上小于在不存在 分散剂,在优选实施方案中,聚合物颗粒在停止搅拌后几乎不立即沉降,并且产生比不使用分散剂的淤浆聚合体系更清洁的反应器。