Method and apparatus for characterizing polymers

表征聚合物的方法和装置

Abstract

本发明涉及在生产聚合物的方法的一个阶段中自动测定聚合物的相对溶液粘度和/或熔体体积流动速率的方法,其中该聚合物处于在有机溶剂中含有10-20wt%的该聚合物的一种溶液中,该方法包括:a)从生产聚合物的方法的一个组件中连续地分出聚合物溶液的子物流,其中该聚合物溶液基本上不含无机盐;b)从该子物流中分出具有1-10μl的体积的样品;c)将该样品引入到凝胶渗透色谱装置中并测定该聚合物的凝胶渗透色谱数据;d)以校正关系为基础,自动地从凝胶渗透色谱图获得的数据测定该聚合物的相对溶液粘度和/或熔体体积流动速率。
The present invention relates to a method for automatically determining the relative solution viscosity and/or the melt volume flow rate of a polymer, during a phase of the process for producing the polymer, where the polymer is in a solution with 10 to 20% by weight of the polymer in an organic solvent. The method includes continuously removing a substream of the polymer solution from a component of the process for producing the polymer, wherein the polymer solution is essentially free from inorganic salts; removing a sample having a volume of from 1 to 10 [mu]l from the substream; introducing the sample into a gel permeation chromatography apparatus and determining the gel permeation chromatography data for the polymer; and automatically determining the relative solution viscosity and/or the melt volume flow rate of the polymer from the data obtained from the gel permeation chromatogram, on the basis of calibration relationships.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-101275894-AOctober 01, 2008中国石油兰州石油化工公司Hydrocarbon resin polymer material viscosity on-line continuous detecting method
    CN-1245570-AFebruary 23, 2000埃克森化学专利公司化学加工车间的在线控制
    US-2004025575-A1February 12, 2004Miroslav Petro, Adam Safir, Nielsen Ralph B., Dales G. Cameron, Carlson Eric D., Lee Thomas S.High temperature characterization of fluid samples
    US-6635224-B1October 21, 2003General Electric CompanyOnline monitor for polymer processes

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle