Method of improving the oxidative thermal stability of ethylene

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

528483, 528495, 528489, 528497, 528499, 528500, 528502C, C08F 628

Patent

active

057566593

ABSTRACT:
A method of improving the oxidative thermal stability of ethylene polymers is disclosed. The method comprises removing residual unreacted monomer(s), solvent and thermally unstable species from the molten polymer. The resulting polymer is characterized by having an oxidative exotherm of not more than about 50 percent of the original polymer, as measured by differential scanning calorimetry.

REFERENCES:
patent: 3156009 (1964-11-01), Alsys
patent: 3476736 (1969-11-01), Kahre
patent: 3799234 (1974-03-01), Skidmore
patent: 3799235 (1974-03-01), Moosavian et al.
patent: 3917507 (1975-11-01), Skidmore
patent: 3992500 (1976-11-01), Kruder et al.
patent: 4029300 (1977-06-01), Morishima et al.
patent: 4094942 (1978-06-01), Nakai et al.
patent: 4107422 (1978-08-01), Salmon
patent: 4265547 (1981-05-01), Martin
patent: 4578455 (1986-03-01), Pipper et al.
patent: 4690981 (1987-09-01), Statz
patent: 4820463 (1989-04-01), Raufst
patent: 4909898 (1990-03-01), Padliya et al.
patent: 4921678 (1990-05-01), Raufast
patent: 4944906 (1990-07-01), Colby et al.
patent: 4952672 (1990-08-01), Moore et al.
patent: 4958006 (1990-09-01), Bernier et al.
patent: 4966810 (1990-10-01), Strait et al.
patent: 4990574 (1991-02-01), Yamada
patent: 5003001 (1991-03-01), Hasenbein et al.
patent: 5071950 (1991-12-01), Borho
patent: 5080845 (1992-01-01), Herrmann et al.
H. Wobbe, Comparison of the Degassing Efficiencies of Single-Screw and Twin-Screw Extruders, Translated from Kunstoffe 78,(1988).
Joseph A. Biesenberger, Polymer Melt Devolatilization: On Equipment Design Equations, Advanced in Polymer Technology, vol. 7, No. 3, pp. 267-278, (1987).
Vincent James Notorgiacomo Jr., A Comparative Study of Single vs. Twin Screw Devolatilizers, A Thesis for the Degree of Master Engineering at Stevens Institute of Technology, (1987).
James L. White et al., Twin Screw Extruders: Development of Technology and Anlaysis of Flow*, Advances in Polymer Technology, vol. 7, No. 3, pp. 295-332, (1987).
Martin H. Mack, Choosing an Extruder for Melt Devolatilization, Plastic Engineering, pp. 47-51, (Jul. 1986).
Martin H. Mack, Degassing of LDPE and Co-Polymers Using a Single Screw Devolatilizing Extruder, ANTEC, Paper #455, (1982).
Hans Werner and John Curry, Efficient Use of Extruders for Polymer Devolatilization, Society of Plastics Engineers, 39th ANTEC, pp. 623-626, (1981).
Dieter Gras, The Use of Multi-Screw Extruders for Devolatilizing Low Solids Polymer Solutions, Society of Plastics Engineers, 33rd Annual Technical Conference, vol. 21, pp. 386-389, (1975).
David B. Todd, Polymer Devolatilization, Society of Plastics Engineers, 32nd Annual Technical Conference, pp. 472-475, (1974).
Dieter Gras, Advances in Devolatilizing Extrusion Techniques, Society of Plastics Engineers, 31st Annual Technical Conference, vol. 19, pp. 263-268, (1973).
E. Uhland, Degassing of Thermoplastics During Extrusion with Single and Twin-Screw Extruders, Publication by Berstoff Corporation, pp. 1-17, (unknown publication date).

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

Method of improving the oxidative thermal stability of ethylene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of improving the oxidative thermal stability of ethylene , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of improving the oxidative thermal stability of ethylene will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1961653

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