Process for fractionating polymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

528491, 528497, 528502, 528503, C08F 604

Patent

active

050307134

ABSTRACT:
An improved process for crystallizing polymer subjected to temperature rising elution fractionation is provided. The process improves the separation of the polymer species upon elution and significantly reduces "tailing" typically observed with such fractionated species. The improvements consists of crystallizing the polymer from a dilute polymer solution outside of the column and in the absence of column packing material. Only after crystallization is the polymer combined with the column packing material. This can be accomplished by either dry-blending or by slurrying.

REFERENCES:
patent: 3701764 (1972-10-01), Hargitay
Bergstrom et al., Investigation of the Composite Molecular Structure of LLDPE by . . . Temperature Rising Elution Fractionation, J. Applied Poly. Sci., 23, 163-171, 1979.
Usami et al., General Mechanism of Short-Chain Branching Distribution in Linear Low-Density Polyethylenes, Macromolecules, 19, 2722, 1986.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for fractionating polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for fractionating polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for fractionating polymers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-618987

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.