Filaments and fibers having discontinuous cavities

Details Filaments and fibers having discontinuous cavities Filaments and fibers having discontinuous cavities

1980-10-14

1983-04-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 91, 521154, 521189, C08G 6300

Patent

active

043805949

ABSTRACT:
A filament of a thermoplastic synthetic polymer having a plurality of adjacent, separate discontinuous cavities is made by a process wherein a silicone oil and an inert gas or gas-forming substance are dispersed in a polymer melt, and the melt is extruded into a filament. The melt contains up to and including 1% by weight of the silicone oil, based on the weight of the melt, at the time it is extruded and up to and including 10% by weight of an inert gas.

REFERENCES:
patent: 3095258 (1963-06-01), Scott
patent: 3214234 (1965-10-01), Bottomley
patent: 3389446 (1968-06-01), Parrish
patent: 4164603 (1979-08-01), Siggel et al.

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