| 摘要 |
1283266 Oil and water-proofing UGINE KUHLMANN 26 May 1970 [23 May 1969] 25111/70 Heading DIP [Also in Divisions C2 C5] Textiles are rendered oil andwater-repellent by treatment with a compound of formula wherein C n F 2n+1 is a polyfluoroalkyl group, n is 1 to 20, m is 2 to 20, Y is a -SO 2 - group or a direct linkage, R 1 , R 2 , R 3 and R 4 are hydrogen atoms or alkyl groups, p is 1 to 4, R; is a hydrogen atom, an alkyl or aryl group or a group -(CR 1 R 2 ) p CR 3 R 4 OZ and Z is the residue of a polybasic mineral acid or of a polybasic organic carboxylic or sulphonic acid. Specified acids from which Z is derived are sulphuric, orthophosphoric, boric, oxalic, malonic, succinic, maleic, fumaric, glutaric, terephthalic, benzenedisulphonic and naphthalenedisulphonic acids. Textile materials specified are natural or regenerated cellulosic fibres, e.g. cotton and viscose, and nitrogenous fibres, e.g. wool, silk, or synthetic polyamides, or mixtures thereof. Proofing of cellulosic fibres is preferably effected in an alkaline medium, e.g. in the presence of sodium or potassium hydroxide or carbonate or trisoduim phosphate. Proofing of nitrogenous fibres is preferably effected in an acid, neutral or slightly alkaline medium, e.g. in the presence of sulphuric, formic, acetic, lactic or oxalic acid, ammonium sulphate or acetate, sodium acetate, sodium bicarbonate or carbonate, ammonia, pyridine, triethylamine or triethanolamine. |
