| 摘要 |
1,211,014. Fluorine-containing polymer compositions. MINNESOTA MINING & MFG. CO. 25 Aug., 1967 [29 Aug., 1966], No. 39193/67. Headings C3P and C3R. [Also in Division D1] An oil repellent fabric-treating composition for enhancing the stain-resistance of a washable fabric and aiding in the removal of stains when the fabric is washed in water comprises an admixture of (A) from 1 to 10 parts by weight of a fluorine-containing oleophobic polymer having affinity for hydrocarbon limited to not more than 25% by weight uptake from saturated cyclohexane vapours at 75‹ F. for 24 hours and containing a monovalent perfluorocarbon group of at least three carbon atoms, the fluorine atoms of the perfluorocarbon group constituting at least 20% by weight of the fluorine-containing polymer and (B) from 10 to 100 parts by weight of a water-insoluble, substantially fluorine free, thermoplastic, hydrophilic polar organic polymer having a contact angle with water of less than 80 degrees, the composition having a contact angle with water of less than 90 degrees. The polar organic polymer may be, e.g., polyethylene terephthalate or condensation products of polyethylene oxide, formaldehyde, and melamine. The perfluorocarbon group is one in which all the substituents are fluorine or a completely or highly fluorinated saturated organic group. The group is preferably aliphatic but may contain oxygen, nitrogen, sulphur or other atoms in the drain without altering the nature of the group. The term " polymer " includes adducts of two or more of the same or different monomeric units, e.g. dimers or trimers. |
