Blend of wholly aromatic polyester and poly(ester-amide) capable

Details Blend of wholly aromatic polyester and poly(ester-amide) capable Blend of wholly aromatic polyester and poly(ester-amide) capable

1984-11-13

1986-01-28

Briggs, Sr., Wilbert J.

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...

524539, 525425, C08L 6702, C08L 7712

Patent

active

045672270

ABSTRACT:
A polymer blend which is capable of exhibiting an anisotropic melt phase and the ability to form shaped articles having improved mechanical properties is provided. The improved polymer blend comprises approximately 5 to approximately 95 percent by weight, based upon the total weight of the polymer blend, of a melt-processable wholly aromatic polyester which is substantially free of amide linkages and approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt-processable poly(ester-amide). Each of the polymeric components apart from the blend is capable of exhibiting an anisotropic melt phase. Upon injection molding, articles formed from the improved polymer blend surprisingly exhibit at least one property selected from the group consisting of tensile strength, tensile modulus, flexural strength and flexural modulus which exceeds that of each of the polymeric components of the blend when separately injection-molded. The polymer blend of the present invention also can be used to advantage to form improved melt-extruded three-dimensional articles, etc.

REFERENCES:
patent: 4228218 (1980-10-01), Takayanagi
patent: 4267289 (1981-05-01), Froix
patent: 4276397 (1981-06-01), Froix
patent: 4386174 (1983-05-01), Cogswell
patent: 4439578 (1984-03-01), Kim
patent: 4460735 (1984-07-01), Froix
patent: 4460736 (1984-07-01), Froix
patent: 4489190 (1984-12-01), Froix

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