US 8,679,199 B2Granted

Formulations of fluorescent whitening agents in dispersed form

AssigneeHunstman International LLC

InventorsSerge Gruetter, Jean-Jacques Donze, Serge Schroeder, Andrea Frey

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Abstract

The present invention relates to an aqueous dispersion containing (a) a fluorescent whitening agent, (b) a dispersing agent, (c) a β-1,3-glucan and, optionally, (d) a vat dye and the use of the aqueous dispersions for whitening synthetic fibers, in particular polyester and polyacrylonitrile.

Claims16

Dependent claims

An aqueous dispersion containing

(a) a fluorescent whitening agent,
(b) a dispersing agent and
(c) a β-1,3-glucane.

Dependencies are inferred from the claim text.

Facts

Application: 13/996,192Filed 4 Jan 2012
Priority: EP 1115151120 Jan 2011
Published: US 2013/0283547 A131 Oct 2013
Granted: 25 Mar 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

D06L 4/671
Optical bleaching or brightening: optical brightening assistants, e.g. enhancers or boosters
D06L 4/636
In aqueous solvents: with disperse brighteners
D06L 4/65
Optical bleaching or brightening: with mixtures of optical brighteners
D06L 4/693
Fugitive optical brightening; Discharge of optical brighteners in discharge paste; Blueing; Differential optical brightening: blueing with…

Family

US 2013/0283547 A1Pre-grant publication · published 31 Oct 2013
US 8,679,199 B2This patent

From the US filing history. Foreign family members aren’t listed.

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