摘要:
Salts having a cationic portion of either a mono-, polyvent metal center, onium salts or organometallic salts and a nonnucleophilic anion are useful as catalysts and initiators that may be photochemically or thermally-activated, and polymerizable compositions containing such catalysts and initiator salts and at least one of a cationic or free-radical addition polymerizable monomers, or catalyzed step-growth polymerizable monomers.
摘要:
Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.
摘要:
Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.
摘要:
A method for preparing a coated abrasive article wherein the a plurality of abrasive grains are applied to a make coat such that the abrasive grains are substantially a mono-layer. The make coat precursor is a pressure-sensitive adhesive-like or pressure-sensitive adhesive. The make coat precursor is partially cured to approximate a pressure-sensitive adhesive-like layer or when fully cured is a pressure-sensitive adhesive. The make coat precursor has sufficient "tack" to hold the abrasive grains during the application and curing of the size coat, resulting in a substantially monolayer of abrasive grains.
摘要:
A method for preparing a coated abrasive article wherein the a plurality of abrasive grains are applied to a make coat such that the abrasive grains are substantially a mono-layer. The make coat precursor is a pressure-sensitive adhesive-like or pressure-sensitive adhesive. The make coat precursor is partially cured to approximate a pressure-sensitive adhesive-like layer or when fully cured is a pressure-sensitive adhesive. The make coat precursor has sufficient "tack" to hold the abrasive grains during the application and curing of the size coat, resulting in a substantially monolayer of abrasive grains.
摘要:
The invention provides a method for imparting topographical or protective features to a substrate by contacting a sheet material comprising a thermoplastic layer with a substrate and heating the sheet material to an elevated temperature. The invention also provides a sheet material which comprises at least one layer consisting essentially of one or more thermoplastic, melt-flowable polymers that are semi-crystalline at room temperature.
摘要:
Polymerizable compositions having at least one cationically polymerizable monomer; an optional free radically polymerizable monomer; an energy-polymerizable catalyst system wherein the catalyst system comprises an organometallic complex salt; a thermally decomposable ester reaction product of a tertiary alkyl alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt; optionally, a peroxide. The polymerized compositions are useful as cured adhesive films, pressure sensitive adhesives, protective coatings, liquid adhesives, structural and semi-structural adhesives, and free standing films.
摘要:
The present invention provides compositions comprising epoxy-containing monomers, where the polymerization of the monomers can be influenced by accelerators. The compositions include at least one photo-polymerizable epoxy monomer and an initiation system. The initiation system comprises at least one organo-iron complex salt and at least one accelerator. The epoxy-containing monomers are energy-polymerized to form useful articles or coated articles.
摘要:
An article adapted for sealing a discontinuity in a surface. The article includes a melt-flowable composition that flows and seals the discontinuity when the article is heated to a sufficient temperature and a polymeric cap controlling the melt-flow behavior of the melt-flowable composition to substantially confine the melt-flowable composition to the area underneath the cap, when the article is heated to a temperature sufficient to cause the melt-flowable composition to flow, and then cooled.
摘要:
A curable composition formed by mixing components comprising 10 to 70 weight percent of a curable epoxy resin; an effective amount of a curative for the epoxy resin; 10 to 85 weight percent of a thermoplastic ethylene-vinyl acetate copolymer; and 5 to 60 weight percent of a thermoplastic polyester resin, the parts by weight being based on the total weight of the resin in the composition.