StarLig Dispersants

Dyes and pigments are mostly used in the form of aqueous dispersions. Dosing a StarLig dispersing agent means that the content of dispersed solids is increased. This makes the suspension more uniform and facilitates application to the specific substrate (fibers). StarLig stabilizes concentrated suspensions and improves resistance to high temperatures.

The excellent dispersing and stability characteristics of VaniStar and Starlig Ultraspersemake these premium products a very suitable alternative for dyestuff dispersant and dyeing aid additives. VaniStar shows excellent effects, particularly when dispersing dyes require high temperature stability. Because StarLig Ultrasperse hardly pollutes cloth, it is widely used for light color dyestuff.

Ultrasperse dyestuff dispersants are recommended for Disperse, Vat, Reactive and Acid dyes.

Disperse dyes Typically offered in paste (liquid) and powder form. Classified by energy level. Usually require a primary dispersant.
Vat dyes Typically offered in paste (liquid) and powder form. VaniStar is an ideal dispersant for liquid vat dyes.
Reactive dyes Reactive dyes have traditionally been standardized with naphthalene sulfonates. Ultrasperse is popular in this application, due to its purity and low staining properties.

 

LignoStar dyestuff dispersants are used either alone or in blended formulations to meet the specific requirements of a customer’s operation. The choice of dispersant(s) is dyestuff and process dependent.

Primary dispersants, such as Ultrasperse and VaniStar are mainly used to enable dyeing performance at higher temperatures.

Secondary dispersants, like Ultrasperse, are used for milling and standardization. Ultrasperse has a very low insolubles and calcium content and is among the least staining products in the StarLig Premium product range. By doing so, milling with dispersant combinations and blends is an effective technique to reduce production cost.

 

Please contact your LignoStar sales representative for further information and support.

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