Abstract: A method of preparing a novel electromagnetic wave attenuating composition comprising forming a curable film forming coating composition and thereafter dispersing an effective amount of an electrically conductive additive in said curable film forming composition under low shear conditions to form said electromagnetic wave blocking composition.

Abstract: Improved thermally-curable adhesive compositions for bonding articles of poly(butylene terephthalate) together or to other articles are disclosed. The adhesive compositions comprise at least one epoxidic prepolymer having two or more epoxy groups, an aromatic halonium complex salt thermal initiator dissolved in a compatibilizing non-epoxidic organic liquid, a copper carboxylate salt cocatalyst, a polyhydric alcohol, and optionally, silica filler. The adhesive compositions when heated, cure to form an adhesive bond between articles of poly(butylene terephthalate) which exhibits a vastly improved bond strength over presently available epoxy adhesive materials.

Abstract: Improved polymerization initiators are described. The combination of radiation sensitive sulfonium or iodonium salts of a Bronsted Acid with an activating peroxide compound may be employed to effect epoxide polymerization.

Abstract: Reactions involving diprimary amines, e.g., methylenedianiline, particularly those forming polyesterimides are carried out using, in place of the diamine, a urethane compound capable of yielding the diamine at reaction temperatures. The preparation of wire enamels from polyesterimides thus prepared is particularly described.

Abstract: Cured polyester compositions and their production are described. These are produced by curing a composition containing polyester resin and aliphatic polyol having a molecular weight of at least about 2000. The polyol acts to reduce normal polyester shrinkage incident to curing so as to produce improved articles.

Abstract: A composition uniquely adapted for use as a heat and ultraviolet light hardenable putty for filling metal surfaces comprises an epoxidic prepolymer, a catalyst precursor combination comprising an aromatic sulfonium salt of a complex halogenide and an aromatic iodonium salt of a complex halogenide, a copper salt catalyst activator, and a mineral filler in an amount sufficient to produce a paste-like consistency.

Abstract: Epoxy resin compositions catalyzed with combinations of diaryliodonium salts of complex halogenides and copper salt catalyst activators are rendered stable at room temperature, but fully activatable at elevated temperatures by including an effective amount of a carboxyl terminated copolymer of butadiene and acrylonitrile, a hydroxy terminated copolymer of butadiene and acrylonitrile or a mixture thereof.

Abstract: In a novel method of forming a stator, armature, coil, etc., the steps of bonding a structure of magnet wire by applying a coating of reactive spooling oil to the length of magnet wire, followed by forming the magnet wire into a coil about an armature, making an open coil, or inserting the latter into a slot section of the core of a stator, and heating the magnet wire until the coating is converted to a hard adhesive thereby permanently forming the bonded structure of magnet wire.