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Abstract

For economic and technical reasons, low solid content thickeners are desirable for printing cotton with reactive dyes. With this in mind, the crosslinking of an acrylic acid-based thickener (saponified acrylonitrile terpolymer) was attempted with multi valent metal salts and a bifunctional crosslinking reagent. As the concentration of aluminium sulphate increased, a tremendous increase in the viscosity occurred. At an aluminium sulphate concentration of 2.5% w/w and a formaldehyde content of 0.25% w/w, the crosslinked products showed the printable viscosities at solid contents of 1.5-2.0% and 0.5-1.0%, respectively. The performance of these products in the reactive printing of cotton is also detailed.

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References

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Crosslinked Acrylic Acid Based Thickeners: Preparation and Performance in Reactive Printing of Cotton

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