Oil- and water-repellent fluorine-containing compositions

Abstract

Abstract THE OLEOPHOBIC AND HYDROPHOBIC PROPERTIES OF POLYMERS OF HIGHLY FIUORINATED MONOMERS THE FIUORINATED PARTS OF WHOSE MOLECULES ARE BRANCHES ARE INCREASED BY MIXING THE POLYMERS WITH OLEOPHOBIC AND HYDROPHOBIC POLYMERS OF HIGHLY FLUORINATED MONOMERS WHOSE FLUORINATED PARTS HAVE LINEAR STRUCTURES; PEFERRED MIXTURES COMPRISE 0.50% TO 15% OF THE LATTER AND 85% TO 99.5% OF THE FORMER. IMPROVED SOLUBILITY OF THE MIXTURES IN HALOGENATED SOLVENTS IS GIVEN BY CO-POLYMERISING THE MONOMERS WITH POLYMERISABLE VINYL COMPOUNDS NOT CONTAINING FLUORINE, FOR EXAMPLE BUTYL METHACRYLATE. SOLUTIONS IN SUCH SOLVENTS CAN BE APPLIED TO TEXTILES TO IMPART OLEOPHOBIC AND HYDROPHOBIC PROPERTIES. RESISTANCE TO DRY-CLEANING AND LAUDERIN OF TREATED FABRICS CAN BE IMPROVED BY INTRODUCING INTO THE COPOLYMERISATION SYSTERMS MINOR PROPORTIONS OF MONOMRS ABLE TO INTRODUCE CROSS-LINKING SITES, FOR EXAMPLE HYDROXYETHYL METHACRYLATE, AND SUBSEQUENTLY CURING BY HEATING THE TREATED FABRIC. PREFERRED LINEAR MOLECULES ARE 1H,1H-PENTADECAFLUOROOCTYL ACRYLATE AND THE REACTION PRODUCT OF POLY(VINYL ALCOHOL) AND PERFLUOROOCTANOIC AICD; PREFERRED BRANCHED MOLEUCLES ARE (I) THE METACRYLIC ESTER, C10F19OC6H4CH2O2CC(CH3)=CH2 OF THE TETRAFLUOROETHYLENE PENTAMER DERIVATIVE OF P-HYDROXYBENZYL ALCOHOL, (II) THE VINYL ESTER C10F19OC6H4CO2CH=CH2 OF THE TETRAFLUOROETHYLENE PENTAMER DERIVATIVE OF P-HYDROXYBENZOIC ACID AND (III) THE VINYL ESTER (C2F5)2(CF3)CCH2CO2CH=CH2 OF TRIDECAFLUORO-2-METHYL-2-ETHYL-1H,1H-BUTANE-1-CARBOXYLIC ACID.

Inventors

• 👤 George Hall Manning
• 👤 Samuel John Webster

Bibliographic Details