Pipe compositions containing anisotropic melt-forming polymers

Details Pipe compositions containing anisotropic melt-forming polymers Pipe compositions containing anisotropic melt-forming polymers

1981-11-03

1983-11-22

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...

524513, 524514, 525151, 525153, 525160, 525165, 525178, C08L 2718, C08L 6100, C08L 6704

Patent

active

044170203

ABSTRACT:
Compositions containing a polymer of PTFE and a polymer capable of exhibiting an anisotropic melt characterized in that the compositions contain between 0.05 and 99.5% of PTFE and 0.5 to 99.95% by weight of the polymer capable of forming an anisotropic melt. The presence of a minor amount of the anisotropic melt-forming polymer, that is, from 0.5 to 50% by weight of the composition enables the processability of PTFE to be improved, even to the extent of providing an injection mouldable PTFE composition. Compositions containing 20 to 50% by weight of PTFE confer benefits on anisotropic melt-forming polymers, such as lubricity and greater versatility in fabrication operations. Concentration of 0.05 to 5.0% by weight of PTFE are particularly suitable for modifying the viscosity characteristics of the low melt viscosity anisotropic melt-forming polymers so that such anisotropic melt polymers are less subject to problems such as flashing and jetting during moulding.

REFERENCES:
patent: 3005795 (1961-10-01), Busse et al.
patent: 3391221 (1968-07-01), Gore et al.
patent: 3644593 (1972-02-01), Nowak et al.
patent: 3991013 (1976-11-01), Pletcher
patent: 4243574 (1981-01-01), Manwiller

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