Solutions for flash spinning of polyester
OwnerHyunkook Shin, Joseph Robert Guckert +1inventors
InventorsHyunkook Shin, Joseph Robert Guckert, Joseph V. Kurian
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Abstract
A process for producing plexifilamentary or foam products by flash spinning in selected spin agents a polymer from the group consisting of poly (1,3-propylene terephthalate), poly (1,4-butylene terephthalate), and poly(ethylene terephthalate), including their copolymers in which the spin agents have minimal or no ozone-depleting properties.
Claims7
A spin fluid comprising (a) 5 to 60 wgt. % synthetic fiber-forming polyester of poly(1,3-propylene terephthalate), copolymers thereof, and (b) a spin agent selected from the group consisting of 1,1,2-trichloro-2,2-difluoroethane, isomers thereof;
- 1,2-dichloroethylene;
- and dichloromethane.
A spin fluid comprising (a) 5 to 60 wgt. % synthetic fiber-forming polyester of poly(1,4-butylene terephthalate), copolymers thereof, and (b) a spin agent selected from the group consisting of 1,1,2-trichloro-2,2-difluoroethane, isomers thereof;
- and 1,2-dichloroethylene.
A spin fluid comprising (a) a blend mixture of polyethylene and a synthetic fiber-forming polyester selected from the group consisting of (poly)ethylene terephthalate, copolymers thereof;
- poly(1,3-propylene terephthalate), copolymers thereof;
- poly(1,4-butylene terephthalate), copolymers thereof, and (b) a spin agent of dichloroethylene.
Dependencies are inferred from the claim text.