Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-hepta

Details Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-hepta Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-hepta

1989-05-08

1991-07-16

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

528408, 528409, 528412, C08G 6516, C08G 6518, C08G 6520

Patent

active

050326732

ABSTRACT:
The present invention relates to copolyethers constituted by copolymers of 7,oxa-bicyclo(2,2,1)heptane, and its alkyl-derivatives, with one or more cycloaliphatic ethers, comprising from 2 to 4 carbon atoms in their ring.
These copolyethers show an anisotropic behavior in the molten state, and therefore are endowed with liquid-crystal properties.

REFERENCES:
patent: 2764559 (1956-09-01), Wilkins
patent: 2856370 (1958-10-01), Muetterties
patent: 3205207 (1965-09-01), Vandenberg
patent: 3344088 (1967-09-01), Miller
patent: 3393157 (1968-07-01), Janssen et al.
patent: 3417033 (1968-12-01), Weissermel et al.
patent: 4371713 (1983-02-01), Matsumoto et al.
Polymerization of Bicyclic Ethers. NMR Structure Study of Copolymers of 7-Oxabicyclo[2.21]Heptane with Ethylene Oxide, 6019 Macromolecules, vol. 15 (1982), May-Jun., No. 3, Washington, U.S.A., pp. 835-840.
Liquid Crystals Polyethers Obtained from Endo- and Exo-2-Methyl-7-Oxabicyclo[2.2.1]Heptane, 2445 Polymer Bulletin 16 (1986), Dec., No. 6, pp. 507-511.
Syntheses and Ring-Opening Polymerization of 2,3- and 2,5-Dimethyl-7-Oxabicyclo[2.2.1]Heptanes, Polymer Journal, vol. II, pp. 113-122 (1979).

Affiliated with

Also associated with

Rating

Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-hepta does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-hepta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-hepta will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-132650