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1.发明申请公开(公告)号：US20180148862A1
公开(公告)日：2018-05-31
申请号：US15577462
申请日：2015-06-18
Applicant: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
Inventor： Renata REDONDO BONALDI , Gabriel GORESCU , Everton FERREIRA DOS SANTOS , Paulo CANDIDO OLIVEIRA
Abstract: The present invention relates to a polyamide fiber with enhanced dyeing properties. The polyamide fiber is suitable for low-temperature dyeing and shorter dyeing cycle. The present invention also discloses a method for obtaining such a fiber. The polyamide fiber is obtained by blending at least a polyamide 5.X, X being an integer from 4 to 16 with an aliphatic polyamide during the melt-spinning extrusion of the polyamide fiber. The blended polyamide fiber and articles made therefrom can be dyed at a lower temperature than the usual boiling temperature, and the dyeing time is half of the time of a normal dyeing cycle. The dyed polyamide fiber and article also show enhanced fastness to washing and perspiration.
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2.发明申请公开(公告)号：US20200299867A1
公开(公告)日：2020-09-24
申请号：US16089048
申请日：2016-04-04
Applicant: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
Inventor： Renata REDONDO BONALDI , Gabriel GORESCU , Pierre HANSU PAK , Richard MACRET
Abstract: The present invention relates to a biodegradable polyamide fiber. The present invention also discloses a method for obtaining such fiber and articles made therefrom. The biodegradable polyamide fiber of the invention can be obtained by adding a biodegradation agent during the melt-spinning extrusion of a specific polyamide described below.
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3.发明申请公开(公告)号：US20180251913A1
公开(公告)日：2018-09-06
申请号：US15759446
申请日：2015-09-14
Applicant: RHODIA POLIAMIDA E ESPECIALIDADES S.A.
Inventor： Renata REDONDO BONALDI , Pierre HANSU PAK , Fabio PEREIRA DE LACERDA , Nathalia COSTA
CPC classification number: D01D5/253 , D01D4/02 , D01D5/088 , D01F6/60 , D02G1/0206 , D10B2331/02 , D10B2501/00
Abstract: The present invention relates to a polyamide fiber with improved comfort management properties. The present invention also discloses a method for obtaining such fiber and articles made therefrom. The polyamide fiber is produced from a hygroscopic polyamide in a multilobal cross section profile. The hygroscopic polyamide fiber is produced preferably from polyamide 5.X, X being an integer from 4 to 16. Most preferably polyamide 5.6, which is a biobased polyamide obtained from pentamethylenediamine and is derived from sugar-based renewable feedstocks. The present invention thus discloses a polyamide fiber and articles made therefrom for sportswear and leisurewear applications, with improved water absorption, wicking and drying properties, wherein the sweat is transported away from the skin and is quickly dried, thereby reducing the wet sensation and chill during activity. The present invention provides freshness and comfort by maintaining a pleasant skin temperature and microclimate.
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