Process for the preparation of a dyeing auxiliary

Details Process for the preparation of a dyeing auxiliary Process for the preparation of a dyeing auxiliary

1995-07-06

1998-01-06

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Nitrogen-containing reactant

528172, 528229, 528232, 528243, 528256, 528257, 528266, 528268, 528363, 528367, C08G 7310

Patent

active

057056056

ABSTRACT:
There is described a process for the preparation of basic poIycondensates, which comprises
(a) reacting an amine of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen or alkyl which is unsubstituted or substituted by amino, hydroxy, cyano or C.sub.1 -C.sub.4 alkoxy, and A is alkylene which may be substituted or interrupted by one or more than one hetero atom, with an ammonium salt in the presence of an anhydrous solvent, and
(b) reacting the protonised product obtained according to (a) with a cyanamide at elevated temperature.
The polycondensates or salts thereof prepared according to this process are particularly suitable aftertreatment agents for enhancing the wetfastness properties of dyed or printed textile material.

REFERENCES:
patent: 4486583 (1984-12-01), Takahashi et al.
patent: 4764585 (1988-08-01), Heller et al.
patent: 5442039 (1995-08-01), Hefner, Jr. et al.
Hendricks, 115: 161150g, Chem. Abs., (199).
Derwent Abs., 66956 E/32 (1982).

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