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US 5,670,584 AGranted
Polyester compositions suitable for the manufacture of fibres and films with high elastic modulus
AssigneeSinco Engineering S.p.A.
InventorsHussain Ali Kashif Al Ghatta, Tonino Severini, Sandro Cobror
Life of this patent
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Abstract
Polyester resins containing up to 5% by weight of a polymeric liquid crystal and an upgrading agent capable of increasing the I. V. of the resin by polyaddition reaction in the solid state with the end groups of the resin. Fibres, films and biaxially oriented articles obtained from the resins.
Claims5
A polyester resin mixed in the melt with a dianhydride of a tetracarboxylic acid and containing, dispersed in the polyester resin, a polymeric liquid crystal in a quantity of up to about 5% by weight of the resin.
Dependencies are inferred from the claim text.