Method of producing textile substrates having improved durable water repellency and soil release
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United States of America Patent
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Nov 16, 2004
Grant Date -
Jun 26, 2003
app pub date -
Oct 16, 2002
filing date -
Jul 7, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for imparting durable water and oil repellency and durable soil release characteristics comprises the application of an aqueous mixture having a water repellent component such as a fluorocarbon polymer and a separate hydrophilic soil release polymer to a textile substrate, followed by a drying step. Optionally, a curing or thermosetting step may also be employed, if desired. This process is carried out in a preferred embodiment in a generally mild pH, which allows the process to be performed on a wide variety of textile substrates that may not be capable of withstanding more extreme pH values. Polyamides, aramids, polyesters, and poly/cotton substrates, when treated according to the present process, have all yielded improved performance with respect to durable water and oil repellency and durable soil release characteristics. A novel mixture or bath and novel treated substrates are also disclosed.
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