Fibers made from soluble polymers
First Claim
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1. A fine fiber comprising a nonreactive polymer and a self-crosslinked resinous aldehyde composition within the fiber wherein the resinous aldehyde composition is present in an amount of greater than 20 parts by weight per 100 parts by weight of the polymer, and further wherein the fine fiber has an average diameter of no greater than 5 microns.
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Abstract
A fiber can be made having a structure with an axial core and a coating layer. The fiber can have a polymer core and one or two layers surrounding the core. The fine fiber can be made from a polymer material and a resinous aldehyde composition such that the general structure of the fiber has a polymer core surrounded by at least a layer of the resinous aldehyde composition.
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Citations
18 Claims
- 1. A fine fiber comprising a nonreactive polymer and a self-crosslinked resinous aldehyde composition within the fiber wherein the resinous aldehyde composition is present in an amount of greater than 20 parts by weight per 100 parts by weight of the polymer, and further wherein the fine fiber has an average diameter of no greater than 5 microns.
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10. A fine fiber comprising a core phase and a coating phase;
- wherein the core phase comprises nonreactive polymer and the coating phase comprises a self-crosslinked resinous melamine-aldehyde composition;
wherein the fine fiber is prepared from a resinous melamine-aldehyde composition in an amount of greater than 20 parts by weight per 100 parts by weight of the nonreactive polymer, and further wherein the fine fiber has an average diameter of no greater than 5 microns.
- wherein the core phase comprises nonreactive polymer and the coating phase comprises a self-crosslinked resinous melamine-aldehyde composition;
Specification