Method of dyeing a substrate comprising elastomeric fibre and non-elastomeric fibre, and a dyed subtrate comprising these fibres

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United States of America Patent

PATENT NO 10876253
APP PUB NO 20200263353A1
SERIAL NO

15998652

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Abstract

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A dyeing method comprising a) dyeing a substrate containing (i) elastomeric fiber containing at least 30 wt. % of a first polymer having a glass transition temperature T1 of less than 60° C. and (ii) non-elastomeric companion fiber containing more than 50 wt. % of a second polymer, said second polymer being polymer having no glass transition temperature or polymer having a glass transition temperature T2 that is at least 20° C. higher than T1, b) contacting the pre-dyed substrate with an extraction medium at a temperature Te and a pressure Pe, said extraction medium comprising at least 50 wt. % of supercritical or liquefied carbon dioxide; wherein Te exceeds Tg1,extraction and wherein Te is less than Tg2,extraction in case the companion 1 fiber contains more than 50 wt. % of polymers having a glass transition temperature T2; Tg1,extraction representing the glass transition temperature of the first polymer in carbon dioxide at pressure Pe; and Tg2,extraction representing the glass transition temperature of the second polymer in carbon dioxide at pressure Pe.

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Patent Owner(s)

Patent OwnerAddress
DYECOO TEXTILE SYSTEMS B VFLEVOLAAN 50 WEESP 1382 JZ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lopez, Lara Gonzalez Weesp, NL 1 0
Siewers, Ernst-Jan Weesp, NL 6 23
Van, Der Kraan Martijn Weesp, NL 1 0
Woerlee, Geert Feye Weesp, NL 19 216

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