The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1998
Filed:
Jul. 06, 1995
Rolf Tittmann, Lorrach, DE;
Ruth Roth, Basel, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
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.