Water-insoluble treated textile and processes therefor

Abstract

There are disclosed processes for preparing a textile treated with a water-insoluble polyester wherein a linear or branched chain water-soluble sulfonate or phosphate group containing polyester is coated or impregnated onto a textile substrate in combination with a crosslinking agent and subsequent to heating to co-react the crosslinking agent with the polyester, the treated textile substrate is exposed to an aqueous solution of a polyvalent metal ion reactive with said sulfonate or phosphate groups in said polyester. Alternatively, there are disclosed processes for preparing a water-insoluble polyester on a textile substrate wherein a branched chain polyester having sulfonate or phosphate groups is coated or impregnated onto a textile substrate, the substrate is dried and subsequently exposed to an aqueous solution of a polyvalent metal ion reactive with said sulfonate or phosphate groups in said polyester. The processes disclosed herein are useful in the preparation of nonwoven fabrics and finished woven fabrics such as sized fabrics including use as a pigment binder in sizing woven fabrics.

Dependencies are inferred from the claim text.