Printing and dyeing of textiles (inverse resist printing)
AssigneeHoechst Aktiengesellschaft
InventorsAndreas von der Eltz, Andreas Schrell, Werner H. Russ
Life of this patent
Estimating the term…
Abstract
A process for printing and dyeing sheetlike fiber materials with anionic dyes comprises a) first applying to the sheetlike fiber material an aqueous solution containing a fixing alkali and a compound which contains a primary, secondary or tertiary amino group or a quaternary ammonium group, which may each also be part of a heterocycle, by using a printing process, then b) subjecting the sheetlike fiber material to a fixing treatment to modify the sheetlike fiber material, and finally and optionally c) dyeing the modified sheetlike fiber material one or more times by a customary exhaust or padding method.
Claims12
A process for the production of colored patterns on areas of cellulose fiber sheet material, which comprises the steps of:
- printing onto the areas of said material an aqueous solution containing a fixing alkali and a compound of the general formulae (1), (2), (3), or (4) ##STR26## where M is a hydrogen atom or an alkali metal
- k is 1 or 2
- R.sup.A is hydrogen or alkyl of 1 to 3 carbon atoms which is unsubstituted or substituted by hydroxyl or a group of the formula (5a) or (5b) ##STR27## where R.sup.1 is hydrogen, methyl, or ethyl,
- R.sup.2 is hydrogen, methyl, or ethyl, and
- R.sup.3 is hydrogen, methyl, or ethyl, or
- R.sup.1 and R.sup.2, together with the nitrogen atom, are a saturated heterocyclic radical formed from one alkyl radical of 5 to 8 carbon atoms or two alkylene radicals of from 1 to 4 carbon atoms and an oxygen atom or an amino group of the formula -NH-, and
- Z is an anion,
- R.sup.B has one of the meanings of R.sup.A ,
- X is a group -O- or -NH-, and, if X is -O-, at least one of R.sup.A and R.sup.B is not hydrogen, ##STR28## where ER is an ester selected from the group consisting of sulfato, phosphato and C.sub.2 -C.sub.5 -alkanoyloxy,
- A and N together with one or two alkylene groups of 1 to 4 carbon atoms form the bivalent radical of a heterocyclic ring, wherein
- A is an oxygen atom or a group with the formula (a, (b), or (c) ##STR29## where R is a hydrogen atom or an amino group or is an alkyl group of 1 to 6 carbon atoms, which is unsubstituted or substituted by 1 or 2 substituents selected from the group consisting of amino, sulfo, hydroxy, sulfato, phosphato, and carboxyl, or is an alkyl group of 3 to 8 carbon atoms, which is interrupted by 1 or 2 hetero groups selected from -O- and -NH- and is unsubstituted or substituted by an amino, sulfo, hydroxy, sulfato, or carboxyl group,
- R.sup.3 is hydrogen, methyl, or ethyl,
- R.sup.4 is hydrogen, methyl, or ethyl, and
- Z is an anion,
- B is the amino group of the formula H.sub.2 N- or an amino or ammonia group of the formula (d) or (e) ##STR30## where R.sup.3, R.sup.4, and Z.sup.(-) are as defined above,
- R.sup.5 is methyl, or ethyl,
- R.sup.6 is hydrogen, methyl, or ethyl, and
- Z is an anion,
- p is 1 or 2
- alkylen is a straight-chain or branched alkylene radical of from 2 to 6 carbon atoms, which interrupted by 1 or 2 hereto groups selected from -O- and -NH-,
- alk straight-chain or branched alkylene radical of 2 to 6 carbon atoms, or is a straight-chain or branched alkylene radical of 3 to 8 carbon atoms, which is interrupted by 1 or 2 hetero groups selected from -O- and -NH-,
- m is 1 or 2,
- n is from 1 to 4, and
- the amino, hydroxyl, and ester groups may be bonded to a primary, secondary, or tertiary carbon atom of the alkylene radical, by using a printing process,
- subjecting the fiber sheet material to a fixing treatment, and
- dyeing the fiber sheet material in the absence of alkali by an exhaust or padding method.
Dependencies are inferred from the claim text.