1,134,132. Coatings. MINNESOTA MINING & MFG. CO. 23 Feb., 1966 [14 Oct., 1965], No. 802S/66. Headings B2E and B2K. [Also in Division C3] Materials such as leather, concrete, wood, metals, plastics, rubbers, and textiles may be coated or treated with polishes, paints, coatings and finishes containing vulcanizates comprising polyether polyprimary polyamine/ epoxy resin formulations. The resins may be applied with or without filler materials, e.g. silica, carbon talc and titanium dioxide. The polyether polyamine has a molecular weight of at least 3500 and is prepared by the interaction of tetrahydrofuran and up to 40 mol percent of another cationically polymerizable cyclic ether or thioether in the presence of trifluoromethane-sulphonic anhydride at from - 40 to 80‹C in a polymerization system which is relatively free of monoalkylatable chain terminating agents and reacting the resultant dicationically active polyether with ammonia. Coatings applied on various substrates, including poly (chlorotrifluoroethylene) plastic, an elastomeric copolymer of chlorotrifluoroethylene and vinylidene fluoride and an elastomeric copolymer of vinylidene fluoride and hexafluoropropane, adhered tenaciously, especially after curing at 121‹C.