Method and compositions relating to the activation of fluorescent whitening agents
First Claim
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1. A composition comprising a fluorescent whitening agent and an activating amount of(1) a homopolymer of a hydroxyalkyl(meth)acrylate, or(2) a copolymer of two or more hydroxyalkyl (meth)acrylates, or(3) a copolymer comprising more than 70 weight percent, in polymerized form, of one or more hydroxyalkyl (meth)acrylate(s)whereby said composition appears whiter than in the absence of said (1), (2), or (3).
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Abstract
A fluorescent whitening agent is activated using a polymer of a hydroxyalkyl (meth)acrylate such as poly(2-hydroxyethyl acrylate).
10 Citations
10 Claims
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1. A composition comprising a fluorescent whitening agent and an activating amount of
(1) a homopolymer of a hydroxyalkyl(meth)acrylate, or (2) a copolymer of two or more hydroxyalkyl (meth)acrylates, or (3) a copolymer comprising more than 70 weight percent, in polymerized form, of one or more hydroxyalkyl (meth)acrylate(s) whereby said composition appears whiter than in the absence of said (1), (2), or (3).
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3. The composition of 5 wherein the liquid carrier is water and the aqueous solution contains from 0.1 to 60 weight percent of the fluorescent whitening agent and polymer activator.
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9. A composition comprising a fluorescent whitening agent and a homopolymer of hydroxyethyl acrylate and a synthetic polymer thickener, the polymer thickener being employed in an amount of from 0.6 to 10 weight parts of acrylate homopolymer per weight part of synthetic polymer thickener.
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10. A method for activating a fluorescent whitening agent with a polymeric activator which comprises contacting the fluorescent whitening agent with an activating amount of
(1) a homopolymer of a hydroxyalkyl (meth)acrylate, (2) a copolymer of two or more hydroxyalkyl (meth)acrylates or (3) a copolymer comprising more than 70 weight percent in polymerized form of one or more hydroxyalkyl (meth)acrylates.
Specification