Blend of polyethylene terephthalate matrix and thermotropic liquid crystal block copolymer
AssigneeAkzo Nobel N.V.
InventorsSophia Dashevsky, Ki-Soo Kim, Stanley W. Palmaka, Roy L. Johnston, Leonardus A. G. Busscher, Johannes A. Juijn
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Abstract
Blends of a poly(ethylene terephthalate) matrix and a thermotropic liquid crystalline segmented block copolymer comprising rod (e.g., aromatic ester mesogen units containing flexible alkylene spacers) and flexible coil polymer blocks of poly(butylene terephthalate) can be used as molding compositions or in the formation of fibers and films.
Claims8
A blend of (1) a flexible coil polymer matrix of poly(ethylene terephthalate) and (2) a thermotropic liquid crystalline segmented block copolymer which comprises rod and flexible coil polymer blocks, the rod blocks being main chain, containing a flexible spacer, and being of the formula
- --[--OArC(O)O(CH.sub.2).sub.n OC(O)ArOC(O)ArC(O)--]--.sub.x
- where Ar represents phenyl with para- bond sites, n can range from 2 to 10, and x can range from about 2 to about 50, the flexible coil blocks being of poly(butylene terephthalate).
Dependencies are inferred from the claim text.