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US 4,127,489 AGranted
Process for making imidazolinium salts, fabric conditioning compositions and methods
AssigneeThe Procter & Gamble Company
InventorsHans J. Pracht, Joseph P. Nirschl
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Abstract
A process for making quaternary imidazolinium fabric conditioning agents essentially free of amines, amine salts and alkoxylated forms of the quaternary imidazolinium salts. An aqueous liquid fabric conditioning composition containing quaternary imidazolinium conditioning agents essentially free of amines and amine salts possesses desirable stability and conditioning properties.
Claims16
A fabric conditioning composition comprising a quaternary imidazolinium salt of the following structure:
- ##STR12## wherein R and R.sub.1 are aliphatic or cycloaliphatic hydrocarbon groups having from about 10 to about 22 carbon atoms, R.sub.2 is an alkyl, substituted alkyl or aralkyl having from 1 to about 8 carbon atoms, R.sub.3 and R.sub.4 are hydrogen, hydroxy, short chain alkyl having from 1 to about 4 carbon atoms or hydroxy short chain alkyl having from 1 to about 4 carbon atoms, D is ##STR13## wherein n is a number from 1 to about 6, and X is an anion;
- said composition containing a total less than about 4% of primary amines, secondary amines and cyclic tertiary amine salts based on the weight of the imidazolinium salt and less than about 25% of an alkoxylated form of the imidazolinium salt based on the weight of said salt.
A method for conditioning fabrics comprising the steps:
- (a) washing fabrics in an aqueous detergent bath containing a detergent;
- (b) rinsing the fabrics in an aqueous rinse bath;
- (c) adding to said rinse bath from about 2 ppm to about 500 ppm of a fabric conditioning agent having the structure ##STR16## wherein R and R.sub.1 are aliphatic or cycloaliphatic hydrocarbon groups having from about 10 to about 22 carbon atoms, R.sub.2 is an alkyl, substituted alkyl or aralkyl having from 1 to about 8 carbon atoms, R.sub.3 and R.sub.4 are hydrogen, hydroxy, short chain alkyl having from 1 to about 4 carbon atoms or hydroxy short chain alkyl having from 1 to about 4 carbon atoms, D is ##STR17## wherein n is a number from 1 to about 6, and X is an anion;
- said imidazolinium salt containing a total less than about 4% of primary amines, secondary amines and cyclic tertiary amine salts;
- (d) drying said fabrics.
2 more elements
Dependencies are inferred from the claim text.