English

An adhesive composition characterized in that the composition is prepared by subjecting finely divided hydrophobic silica surface-treated with hexamethyldisilazane to a heat treatment under a reduced pressure, subsequently treating the silica with an acid gas, and admixing the resulting silica with an alpha-cyanoacrylate.

Adhesive composition of the cyanoacrylate type containing Phthalic anhydride as an additive to improve the resistance to moisture and/or heat of the resulting adhesive bonds.

This invention relates to precaution against a hazard in the use of adhesive compositions based on cyanoacrylate monomers. It relates to a protective composition for the skin (especially the hands) of a person working with a cyanoacrylate adhesive or "superglue", and to a method using the composition, for protecting such a person's skin.

This invention related to adhesive compositions containing certain esters of alpha-cyanoacrylic acid and to methods for their use.

The invention described herein comprises a two component sealant composition and process fro applying the sa,e for repair of ruptures, holes, cracks, etc., in hoses, pipes, tires, etc. The first component is alpha-cyanoacrylate glue which is applied as a layer covering the rupture or crack and after a very short period the second component, a powder, is applied to the surface of the alpha-cyanoacrylate.

This invention relates to alpha-cyanoacrylate adhesive compositions and bonds formed therefrom. More particularly, our invention is concerned with adhesive formulations comprising monomeric esters of alpha-cyanoacrylic acid and vinyl aromatic compounds for bonding metallic or non-metallic surfaces to themselves or to each other and otherwise providing a superior bonded article.

A radiation-curable composition which includes a cyanoacrylate component or a cyanoacrylate-containing formulation; a metallocene component; and a polymerizingly effective amount of a photoinitiator to accelerate the rate of cure is provided.

The present invention provides a cyanoacrylate composition comprising a cyanoacrylate component; and a core shell rubber component having a particle size in the range of 3 nm to 1,000 nm dispersed in a curable (meth)acrylate matrix.

This invention relates to toughened cyanoacrylate compositions which exhibit improved peel strengths and fixture speeds. The toughened cyanoacrylate compositions include a toughening agent comprising poly(vinychloride-co-vinyl acetate) and poly(methylmethacrytlate).

This invention relates to cyanoacrylate-containing compositions that exhibit at least one of improved shock resistance and bond strength, while demonstrating relative surface insensitivity with respect to establishing and maintaining fixture times that are on the order of comparable cyanoacrylate compositions without the added carboxylic acids, The compositions include, in addition to the cyanoacrylate component, certain carboxylic acids.