KR860000443A - How to improve the adhesion of dyes or optical brighteners - Google Patents

Abstract

No content

Description

How to improve the adhesion of dyes or optical brighteners

As this is a public information case, the full text was not included.

Claims (19)

Up to 50 mole% of cyanamide, DCDA, quaanidine or biquaanidine in the reaction of mono- or polyfunctional primary or secondary amines with cyanamide, dicyanidiamide (DCDA), quanidine or bicanidine By reacting the product (a) of the reaction with epicarboxylic hydrin or its precursor (b) which may be replaced by dicarboxylic acid or its mono- or di-ester and which comprises a reactive hydrogen atom bonded to nitrogen The reaction product is acidified to contain a receiver, amino group or thiol group by dyeing, printing or brightening the provided precondensate and subsequently performing a cross-linking step on the substrate or simultaneously applying it. A method of improving the adhesion of gaseous dyes or optical brighteners comprising fibers. The process of claim 1 wherein the reaction products (A) and (B) are acidified to pH 2-5. The process according to claim 1 or 2, wherein the reaction products (A) and (B) are acidified with sulfuric acid. The process of claim 1 wherein the reaction products (a) and (b) are acidified in the presence of a water soluble polymer. The method of claim 4 wherein the water soluble polymer is polyvinyl alcohol, polyacrylamide or hydroxyethyl cellulose. A method for improving the fixing property of a dye or an optical brightener on a substrate comprising a fiber having a hydroxyl group, an amino group or a thiol group as described in Examples 5-11. Up to 50 mole percent cyanamide, DCDA, quaanidine or biquaanidine in the reaction of mono- or polytubular primary or secondary amines with cyanamide, dicyan diamide (DCDA), quanidine or biquanidine The product of the reaction which can be replaced by mono- or di-esters of this dicarboxylic acid or a compound and which contains hydrogen atoms bonded to nitrogen, reacts with epihalohydrin or a precursor thereof and reacts the reaction product. Stable aqueous dispersion of the precondensate, calculated by acidifying the mixture. The dispersion of claim 7 having a pH of 2-5. The dispersion according to claim 7 or 8 which is acidified by sulfuric acid. 8. A dispersion according to claim 7, prepared by reacting (a) and (b) and acidifying the reaction product in the presence of a water-soluble polymer. The dispersion of claim 10 wherein the water soluble polymer is polyvinyl alcohol, polyacryl amide or hydroxyethyl cellulose. Stable aqueous dispersion as described in Examples 1-4. Up to 50 mole percent of cyanamide, DCDA, quaanidine or vicuanium in the reaction of mono- or polyfunctional primary or secondary amines with cyanamide, dicyan diamide (DCDA), quanidine or bicanidine The product of the reaction comprising a reactive hydrogen atom bound to nitrogen, and the compound of which the dean may be replaced by dicarboxylic acid or mono- or di-ester thereof, (i) epihalohydrin or its precursor (b) Reacting with acid to acidify the reaction product. The method of claim 13 comprising the step of acidifying the reaction product of (a) and (b) in the presence of a water soluble polymer. A condensation mole prepared by reacting a product of the same amount of polyalkylene polyamine with DCDA and epichlorohydrin in a molar ratio of 1: 0.1 to 1: 0.5 based on the number of moles of DCDA. Up to 50 mole% of cyanamide, DCDA, quaanidine or biquaanidine in the reaction of mono- or polyfunctional primary or secondary amines with cyanamides, dicyandiamides (DCDA), quanidines or biquanidines The product (a) of the reaction comprising epihalohydrin or its precursor (b), which may be substituted with this dicarboxylic acid or its mono or diester, and which comprises a reactive hydrogen atom bonded to nitrogen By way of application of a condensate prepared by reaction to a dyed or printed substrate and subsequent or simultaneous crosslinking step to the substrate, a dye or optically gilded containing fibers having amino or thiol groups Method of improving the adhesion of the polish. The method of claim 16 wherein the dye is a metallic or acidic dye or the substrate is wool or silk. 18. The process according to claim 16 or 17, wherein the precondensate is a stable aqueous acid solution prepared by acidifying the reaction product of (a) and (b). ※ Note: The disclosure is based on the initial application.