PROCESSES FOR TRANSITIONING BETWEEN VARIOUS POLYMERIZATION CATALYSTS

申请公布号：CA2508761(A1)

申请号：CA20032508761

申请日期：2003.12.03

申请公布日期：2004.07.22

申请人：

UNIVATION TECHNOLOGIES, LLC

发明人：EISINGER, RONALD S.;CAI, PING P.;GOODE, MARK G.;BURDETT, IAN D.;HUSSEIN, F. DAVID;SWECKER, JAMES L.;MUHLE, MICHAEL E.;KINNAN, MICHAEL A.

分类号：B01J8/24;C08F2/00;C08F2/34;C08F4/659;C08F10/00;C08F10/02;C08F210/16

主分类号：B01J8/24

摘要：This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioni ng among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and chromium~-based catalyst systems.< /SDOAB>

UNIDADE DE OBSTRUCAO DO FOSSO

PROCESSO PARA SIMULTANEAMENTE REVESTIR A SUPERFICIE DE UMA ESTRUTURA DE APOIO COMPOSITA TENDO UMA PORCAO DA AREA SUPERFICIAL DA MESMA COMPOSTA DE UM METAL DE BASE DE ALUMINIO E UMA OUTRA PORCAO DE AREA SUPERFICIAL DA MESMA COMPOSTA DE UM METAL DE BASE FERROSA,COM UMA CAMADA ADERENTE DE METAL DE BASE DE ESTANHO,BANHO PARA O MESMO,E APOIO COMPOSITO

APARELHO DE FIXACAO(DE IMAGEM)POR FUSAO EM FORMA DE ROLO

SISTEMA PARA PROPULSAO E ALINHAMENTO DE CORREIA

DISPOSITIVO SEMICONDUTOR

VAGAO FERROVIARIO

CONTINUOUS BALANCE

METHOD OF MOUNTING RESISTIVE ELEMENT OF INTEGRATED CIRCUIT

SWITCHING REGULATOR

WIRE PRODUCTION

CYCLIC UNDECAPEPTIDE ANALOGS OF SOMATOSTATIN AND INTERMEDIATES

N-CYANOSULFONAMIDE RESINS AND INTERMEDIATES THEREFOR AND PRODUCTS EOF

HUMAN BODY IMPLANT OF GRAPHITIC CARBON FIBER REINFORCED A-HIGH MOLECULAR WEIGHT POLYETHYLENE

PROCESS FOR PRODUCING POWDERY WATER-SOLUBLE POLYMER

SPECIFIC SORBENTS AND A METHOD OF THEIR PREPARATION

MODULAR SLOT INTERCHANGE DIGITAL EXCHANGE

SEMICONDUCTOR COLOR DETECTOR

HIGH VOLTAGE INSULATED CABLE SPLICE ASSEMBLY

UNIVERSAL AUTOMOTIVE ELECTRONIC RADIO

ELECTRIC HOT PLATE ASSEMBLIES