Macrocyclic polymers having low hysteresis compounded properties

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

524571, 524576, 524586, 525106, 525194, 525195, 525196, 5253319, 5253323, 5253328, 5253329, 5253595, 5253596, 525370, 525371, 525374, 525375, 525379, 525382, 525383, 526175, 526176, 526183, 526190, 152450, C08K 336, C08K 304, C08F 3604

Patent

active

059360291

ABSTRACT:
The present invention provides a method of anionic synthesis of stable macrocyclic polymers that are compounded to form vulcanizable elastomeric compounds exhibiting reduced hysteresis properties. Cyclic organometallic compounds containing divalent metal atoms of Groups IIA and IIB of the Periodic System are employed as initiators of anionic polymerization of conjugated diene, vinyl aromatic and/or triene monomers. Coupling of the living ends of the resulting macrocyclic polymers or copolymers with a coupling agent or a coupling agent that is also a functionalizing agent results in stable macrocyclic polymers with improved hysteresis properties.

REFERENCES:
patent: 3351646 (1967-11-01), Ramsden et al.
patent: 3354190 (1967-11-01), Ramsden
patent: 3388179 (1968-06-01), Ramsden
patent: 3726933 (1973-04-01), Smith et al.
patent: 3766091 (1973-10-01), Vandenberg
patent: 3822219 (1974-07-01), Kamienski
patent: 4116887 (1978-09-01), Lehn et al.
patent: 4139490 (1979-02-01), Halasa et al.
patent: 4401800 (1983-08-01), Hall
patent: 4410742 (1983-10-01), Mueller
patent: 4429091 (1984-01-01), Hall
patent: 4520123 (1985-05-01), Hall
patent: 4672097 (1987-06-01), Hall
patent: 5066729 (1991-11-01), Stayer, Jr. et al.
patent: 5268413 (1993-12-01), Antkowiak
patent: 5268439 (1993-12-01), Hergenrother et al.
patent: 5272207 (1993-12-01), Hall et al.
patent: 5521309 (1996-05-01), Antkowiak et al.
patent: 5523371 (1996-06-01), Lawson et al.
Hsieh, H.S. and I.W. Wang. Effects of Dibutylmagnesium on Alkyllithium-Initiated Polymerizations. Macromolecules 1986, 19: 299-304.
Rempp, P., E. Franta, and J.E. Herz. Macromolecular Engineering by Anionic Methods. Advances in Polymer Science 86: 148-149, 159-160. Springer-Verlag, Berlin, Heidelberg, 1988.
Van Beylen, M., et al. Developments in Anionic Polymerization--A Critical Review. Advances in Polymer Science 86: 117-119, 141-142. Springer-Verlag, Berlin, Heidelberg, 1988.
Fujita, K., et al. Magnesium-Butadiene Addition Compounds: Isolation, Structural Analysis and Chemical Reactivity. J. Organometallic Chemistry, 113(1976): 201-213.
Hild, G., C. Strazielle and P. Rempp. Cyclic Macromolecules. Synthesis and Characterization of Ring-Shaped Polystyrenes. Eur. Polym. J. 19 (8): 721-727, 1983.
Hild, G., A. Kohler and P. Rempp. Synthesis of Ring-Shaped Macromolecules. Eur. Polym. J. 16: 525-527, 1980.
Schober, B.J., et al. New Delocalized Tetraanion Initiators For Polymeric Catenane Synthesis. Polymer Preprints 30(2): 199-200.
Geiser, D. and H. Hocker. Synthesis and Investigation of Macrocyclic Polystyrene. Macromolecules 1980, 13: 653-656.
Yasuda, H. et al. Magnesium-Assisted Stereospecific Oligomerization of Isoprene. Unique Chemical Behaviors of Magnesium-Isoprene Adducts,
Roovers, J. and P.M. Toporowski. Synthesis of High Molecular Weight Ring Polystyrenes. Macromolecules 1983, 16: 843-849.
Gruter, G-J. M., et al. Formation of the First Organometallic Catenane. J. Am. Chem. Soc. 1993, 115: 12179-12180.
Bickelhaupt, F. Organomagnesium Chemistry: Nearly Hundred Years But Still Fascinating. J. Organometallic Chem 475 (1994): 1-14.
Noboru, et al. "An Attempt at the Preparation of Macrocyclic Polymer". J. Macromol. Sci. -Chem., vol. A9(4): 551-561, 1995.
Quirk et al, "Anionic Syntheses of Functionalized Cyclic Macromolecules Using a Living Coupling Agent", Polym. Prepr. (ACS Div. Polym. Chem.) (1988) 29(2), 10-11, Sep. 1988.

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

Macrocyclic polymers having low hysteresis compounded properties does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Macrocyclic polymers having low hysteresis compounded properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Macrocyclic polymers having low hysteresis compounded properties will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1120892

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