Textile treating agents

Interpolymers of N-methylol acrylamide compounds of formula Q-NH-CH2OH where Q is the acyl radical of acrylic or methacrylic acid, with at least one fluoroalkyl ester of formula Q-OCH2(CF2-CF2)mH where m is 1 to 6, or Q-OCH2(CF2)nF or Q-OCH2CH2(CF2)nF where n is 2 to 12, said N-methylol acrylamide constituting not less than 0,25% and not more than 5% by weight of the interpolymer, may be prepared by copolymerizing the monomers in aqueous emulsion in the presence of free radical generating catalysts. Suitable catalysts are hydrogen peroxide, benzoyl peroxide, potassium persulphate, 2,21-azodiisobutyramidine dihydrochloride and redox systems comprising potassium persulphate and sodium bisulphite. Emulsifiers, e.g. sodium lauryl sulphate, ammonium di1H,1H,7H-dodecafluoroheptyl) phosphate and octadecyltrimethyl ammonium chloride or bromide, and buffers, e.g. sodium borate, may be present. Many suitable fluoralkyl esters are listed and examples describe the preparation of interpolymers of N-methylol ...