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Preparation of fluorescent brighteners modified by polyvinyl alcohol and application in detergent

Jing Liu

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Abstract

Triazinyl aminostilbene fluorescent brighteners(FBs) can be synthesized through three-step condensation reaction of 4,4′-diamino stilbene-2,2′-disulfonic acid(DSD acid) with cyanuric chloride(CC) and two kinds of amino compounds.In this paper the fluorescent brighteners modified by polyvinyl alcohol(PVA-FBs) are synthesized by changing a reactant in the third condensation reaction,in which PVA is used to replace one of the two amino compounds.The experimental results show that fabric brightening effect and light stability of liquid detergent through adding PVA-FBs have improved.The optimal amount of FBs in liquid detergent is also confirmed.

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What this paper is about

Triazinyl aminostilbene fluorescent brighteners(FBs) can be synthesized through three-step condensation reaction of 4,4′-diamino stilbene-2,2′-disulfonic acid(DSD acid) with cyanuric chloride(CC) and two kinds of amino compounds.In this paper the fluorescent brighteners modified by polyvinyl alcohol(PVA-FBs) are synthesized by changing a reactant in the third condensation reaction,in which PVA is used to replace one of the two amino compounds.The experimental results show that fabric brightening effect and light stability of liquid detergent through adding PVA-FBs have improved.The optimal amount of FBs in liquid detergent is also confirmed.

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Available abstract

Triazinyl aminostilbene fluorescent brighteners(FBs) can be synthesized through three-step condensation reaction of 4,4′-diamino stilbene-2,2′-disulfonic acid(DSD acid) with cyanuric chloride(CC) and two kinds of amino compounds.In this paper the fluorescent brighteners modified by polyvinyl alcohol(PVA-FBs) are synthesized by changing a reactant in the third condensation reaction,in which PVA is used to replace one of the two amino compounds.The experimental results show that fabric brightening effect and light stability of liquid detergent through adding PVA-FBs have improved.The optimal amount of FBs in liquid detergent is also confirmed.

Key concepts: Cyanuric chloride, Polyvinyl alcohol, Fluorescence, Chemistry, Alcohol, Polyvinyl chloride, Condensation, Condensation reaction

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