Abstract:
An improved adhesive composition comprising a nonacidic aqueous latex copolymer of a lower acrylate, an acrylic nitrile and a glycidyl acrylate having a crosslinking agent dissolved in the aqueous phase.
Abstract:
A mounting entity comprises, in layered order, a pressure sensitive adhesive, a foam spacer, a second pressure sensitive adhesive, a filler, and a heat sensitive adhesive. The first pressure sensitive adhesive is attached to an electrical component which is then mounted upon a printed circuit with the heat sensitive adhesive in contact therewith. The passing of the board over a solder wave heats the top surface of the board to a temperature high enough to activate the heat sensitive adhesive and adhere the component to the board. The intermediate foam layer dampens shock and vibration.
Abstract:
A hot melt adhesive suitable for bonding plastic, metal, and glass together has been developed by blending together into a homogenous mixture 10 to 20 weight percent of ethylene/vinyl acetate/acid functional terpolymer resin of low acid number, 15 to 50 weight percent of ethylene/vinyl acetate/acrylic acid terpolymer resin of high acid number and 30 to 60 weight percent of tackifying resins based on alpha-methylstyrene, rosin, or a terpene resin. Additionally, suitable antioxidants and surfactants are added to control the aging and application of the composition.
Abstract:
This invention relates to water-soluble, pressure-sensitive, hot-melt adhesives; and more specifically to hot-melt adhesives for labels and pressure-sensitive labels. The labels can be readily removed by application of water to the adhesive to facilitate peeling from the article; the adhesives are based upon certain vinyl pyrrolidone polymers.
Abstract:
The hot-melt adhesives of the present invention comprise a blend of ethylene-vinyl acetate copolymers, tackifier resin, modified polyethylene and microcrystalline wax. These hot-melt adhesive compositions provide adhesives having a novel combination of properties such as high tensile, low elongation and good bonding properties for adhering polyethylene film to nonwoven substrates such as disposable diapers.
Abstract:
The disclosure is of a method for extending the molten stability of ethylene-vinyl acetate (EVAc) copolymers. One embodiment of the method comprises mixing a lithium salt in the adhesive compositions. The disclosure is also of EVAc-based hot-melt adhesive compositions prepared by the method of the invention and characterized in part by their stability in the molten state.
Abstract:
Hot melt sealant compositions having improved adhesive bonding properties comprise a slightly crosslinked butyl rubber and critically-controlled amounts of a crystalline polymeric resin and a tackifying resin.
Abstract:
Improved pressure sensitive adhesive compositions based on acrylate ester polymers and the substrates coated therewith. The improved adhesive and cohesive properties result from the addition to the polymer of specified quinone ultraviolet sensitizers and the subsequent crosslinking thereof by exposure to an ultraviolet source.
Abstract:
A RESINOUS MATERIAL CHARACTERIZED WITH A SOFTENING POINT IN THE RANGE OF ABOUT 60* C. TO ABOUT 110*C. PREPARED BY POLYMERIZING PIPERYLENE, 2-METHYL-2-BUTENE, DICYCLOPENTADIENE AND A-METHYL STYRENE IN THE PRESENCE OF A CATALYST SELECTED FROM ALUMNIUM CHLORIDE AND ETHYL ALUMINUM DICHLORIDE AND A SOLVENT SELECTED FROM ALIPHATIC AND AROMATIC HYDROCARBONS. THE RESINOUS BUTADIENE SYTRENE TICULAR UTILTIY AS A TACKIFIER FOR RUBBERY BUTADIENE STYRENE COPOLYMERS.
Abstract:
A hot-melt adhesive having a superior adhesiveness at high temperature, comprising 100 parts by weight of a thermoplastic substance composed essentially of ethylene-vinyl acetate copolymer and 10-200 parts by weight of an inorganic filler.