IP Library › Granted Patent US 6,861,480
Granted Patent B2
US 6,861,480 · App. 10/771,355 · Granted Mar 1, 2005

Yarn-forming composition of polyamide and sulfonated acid dye disabler

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Quick Facts
Patent No.
US 6,861,480
App. No.
10/771,355
Granted
Mar 1, 2005
Kind
B2
Abstract

An acid dye stain-resistant fiber-forming polyamide composition comprising a fiber-forming polyamide and a reagent, at least a portion of which associates with free acid dye sites in the polyamide, thereby disabling the acid dye sites in fibers formed from the composition from taking up acid dye stains; a masterbatch concentrate for addition to a fiber-forming polyamide to form an acid dye stain-resistant fiber-forming polyamide composition comprising a carrier compatible with the fiber-forming polyamide combined with an amount of the above reagent in excess of that desired in the acid dye stain-resistant fiber-forming polyamide; as well as fibers and articles of manufacture prepared therefrom.

Claims (6)

1. A yarn-forming composition produced by a method comprising the steps of:

(1) supplying into a melt extruder fiber-forming polyamide and a solid reagent for disabling free acid dye sites of said fiber-forming polyamide, said reagent consisting of a sulfonated acid,

(2) melt compounding said sulfonated acid with said fiber-forming polyamide in said melt extruder and removing volatiles to form a fiber-forming polyamide composition;

(3) melt extrusion spinning said fiber-forming polyamide composition to form a yarn; and

(4) drawing said yarn.

2. The composition of claim 1 , wherein said method further includes a step of crimping said yarn to produce a textured continuous filament yarn.

Assignments (20)
RELEASE OF SECURITY INTEREST Recorded Apr 8, 2022
From: PROSPECT CAPITAL CORPORATION
To: UNIVERSAL FIBERS, INC.
Reel/Frame 059546/0562 →
RELEASE OF SECURITY INTEREST IN PATENT COLLATERAL Recorded Sep 30, 2021
From: ALTER DOMUS (US) LLC, AS ADMINISTRATIVE AGENT
To: UNIVERSAL FIBERS, INC.
Reel/Frame 057693/0427 →
ASSIGNMENT OF PATENT SECURITY AGREEMENT Recorded Jul 8, 2021
From: BNP PARIBAS
To: PROSPECT CAPITAL CORPORATION
Reel/Frame 056808/0105 →
ASSIGNMENT OF SECURITY INTEREST Recorded Jun 7, 2021
From: BNP PARIBAS
To: ALTER DOMUS (US) LLC
Reel/Frame 056509/0933 →
RELEASE OF SECURITY INTEREST Recorded Oct 5, 2015
From: BNP PARIBAS, AS ADMINISTRATIVE AGENT
To: UNIVERSAL FIBERS, INC.
Reel/Frame 036730/0886 →
SECURITY INTEREST Recorded Oct 2, 2015
From: UNIVERSAL FIBERS, INC., AS GRANTOR
To: BNP PARIBAS, AS COLLATERAL AGENT
Reel/Frame 036717/0280 →
SECURITY INTEREST Recorded Oct 2, 2015
From: UNIVERSAL FIBERS, INC., AS GRANTOR
To: BNP PARIBAS, AS COLLATERAL AGENT
Reel/Frame 036718/0147 →
RELEASE OF GRANT OF PATENT SECURITY INTEREST AT REEL/FRAME NO. 24611/0181 Recorded Feb 5, 2014
From: BNP PARIBAS
To: UNIVERSAL FIBERS, INC.
Reel/Frame 032163/0840 →
GRANT OF PATENT SECURITY INTEREST Recorded Feb 5, 2014
From: UNIVERSAL FIBERS, INC.
To: BNP PARIBAS, AS ADMINISTRATIVE AGENT
Reel/Frame 032163/0849 →
RELEASE OF SECURITY INTEREST Recorded Jun 29, 2010
From: BNP PARIBAS
To: UNIVERSAL FIBERS, INC.
Reel/Frame 024678/0403 →
SECURITY AGREEMENT Recorded Jun 29, 2010
From: UNIVERSAL FIBERS, INC.
To: BNP PARIBAS
Reel/Frame 024611/0181 →
RELEASE OF SECURITY AGREEMENT IN PATENTS Recorded Nov 2, 2007
From: THE ROYAL BANK OF SCOTLAND PLC
To: UNIVERSAL FIBER SYSTEMS, LLC; PREMIERE FIBERS, INC.; SB ACQUISITION CORPORATION; SD FIBERS ACQUISITION CORPORATION; PRISMA FIBERS, INC.
Reel/Frame 020056/0670 →
GRANT OF PATENT SECURITY INTEREST Recorded Oct 30, 2007
From: UNIVERSAL FIBER SYSTEMS, LLC
To: BNP PARIBAS
Reel/Frame 020035/0346 →
CHANGE OF NAME Recorded Oct 12, 2007
From: PRISMA FIBERS, INC.
To: UNIVERSAL FIBERS, INC.
Reel/Frame 019955/0540 →
MERGER Recorded Oct 9, 2007
From: COOKSON FIBERS, INC.
To: CAMAC CORPORATION
Reel/Frame 019930/0576 →
CHANGE OF NAME Recorded Oct 9, 2007
From: CAMAC CORPORATION
To: PRISMA FIBERS, INC.
Reel/Frame 019930/0742 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 9, 2007
From: STUDHOLME, MATTHEW B.
To: COOKSON FIBERS, INC.
Reel/Frame 019930/0759 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Dec 19, 2006
From: UNIVERSAL FIBER SYSTEMS, LLC; PREMIERE FIBERS, INC.; SB ACQUISITION CORPORATION; SD FIBERS ACQUISITION CORPORATION; PRISMA FIBERS, INC.
To: THE ROYAL BANK OF SCOTLAND, PLC, AS AGENT
Reel/Frame 018654/0001 →
RELEASE OF SECURITY INTEREST Recorded Dec 18, 2006
From: NATIONAL CITY BANK, AS AGENT
To: PRISMA FIBERS, INC.
Reel/Frame 018650/0223 →
SECURITY AGREEMENT Recorded Aug 4, 2005
From: PRISMA FIBERS, INC.
To: NATIONAL CITY BANK
Reel/Frame 016353/0474 →