Patent GB-985321-A (GB)
Title: Fabric softening process
IPC: C11D1/92
Filed: 1962-01-24
Abstract: The imidazoline derivatives produced by the reaction of a polyamine, e.g. aminoethyl ethanolamine, with a triglyceride or free fatty acid, e.g. lauric, palmitic, stearic, coconut oil or tallow fatty acid, are sulphated, e.g. with sulphuric or chlorosulphonic acid, if desired after quaternization with dimethyl sulphate, to produce sulphated imidazoline derivatives having the formula <FORM:0985321/C2/1> in which R1 is an alkyl group containing 9-19 carbon atoms, R2 is a hydrogen atom or an alkyl or hydroxy alkyl group containing 1-4 carbon atoms and R3 is a straight or branched chain alkylene group containing 1-4 carbon atoms. If R2 is a hydrogen atom the imidazoline derivative may exist in the form of a zwither ion or as a metal salt, e.g. the sodium salt.ALSO:A composition suitable for washing and softening fabrics comprises (a) an anionic or non-ionic detergent, e.g. <FORM:0985321/C4-C5/1> and (b) a sulphated imidazoline derivative having the formula <FORM:0985321/C4-C5/2> in which R1 is an alkyl group containing 9-19 carbon atoms, R2 is a hydrogen atom or an alkyl or hydroxyalkyl group containing 1-4 carbon atoms and R3 is a straight or branched chain alkylene group containing 1-4 carbon atoms. When R2 is a hydrogen atom the sulphated imidazoline derivative may exist in the form of a zwither ion or as a metal salt, e.g. the sodium salt.  The treating composition may also contain sodium xylene sulphonate, the disodium salt of N-(2-hydroxyethyl) imino-diacetic acid, carboxymethyl cellulose, potassium pyrophtosphate and sodium dihydrogen orthophosphate.ALSO:Fabrics, e.g. cotton fabrics, are washed, softened and rendered bacteriostatic by immersing them in water containing (a) an anionic or non-ionic detergent, e.g. C9H19-C6H4-O(C2H4O) 9-10-H and (b) a sulphated imidazoline derivative having the formula <FORM:0985321/A5-A6/1> in which R1 is an alkyl group containing 9-19 carbon atoms, R2 is a hydrogen atom or an alkyl or hydroxyalkyl group containing 1-4 carbon atoms and R3 is a straight or branched chain alkylene group containing 1-4 carbon atoms.  When R2 is a hydrogen atom the sulphated imidazoline derivative may exist in the form of a zwither ion or as a metal salt, e.g. the sodium salt.  The sulphated imidazoline derivative may be used in a concentration of between 0,05 and 0,5% based on the weight of the fabric.  The treating composition may also contain sodium xylene sulphonate, the disodium salt of N-(2-hydroxyethyl)imino-diacetic acid, carboxymethyl cellulose, potassium pyrophosphate and sodium dihydrogen orthophosphate.ALSO:Fabrics, e.g. cotton fabrics, are washed and softened and may be rendered bacteriostatic by immersing them in water containing (a) an anionic or non-ionic detergent, e.g. C9H19-C6H4-O (C2H4O)9-10-H and "Tide" (Registered Trade Mark) and (b) a sulphated imidazoline derivative having the formula <FORM:0985321/D1-D2/1> in which R1 is an alkyl group containing 9-19 carbon atoms, R2 is a hydrogen atom or an alkyl or hydroxyalkyl group containing 1-4 carbon atoms and R3 is a straight or branched chain alkylene group containing 1-4 carbon atoms.  When R2 is a hydrogen atom the sulphated imidazoline derivative may exist in the form of a zwitterion or as a metal salt, e.g. the sodium salt.  The sulphated imidazoline derivative may be used in a concention of between 0.05 and 0.5% based on the weight of the fabric.  The treating composition may also contain sodium xylene sulphonate, the di-sodium salt of N-(2-hydroxyethyl) imine diacetic acid, carboxymethyl cellulose, potassium pyrophosphate and sodium dihydrogen ortho phosphate.