Abstract: The present invention relates to water-borne ceramer compositions capable of being cured to form antistatic, abrasion resistant ceramers. The ceramer compositions comprise water having dispersed or dissolved therein a plurality of colloidal silica particles, a binder precursor, and an electrically conductive organic polymer. The present invention also relates to ceramer articles, for example, ceramer coatings and shaped ceramer particles made from the ceramer compositions and to methods of making the ceramer compositions and ceramer articles.

Abstract: The present invention relates to an approach for improving the compatibility of antistatic agents and ceramer hardcoats so that such hardcoats can be provided with excellent antistatic characteristics. In particular, it has been discovered that the antistatic agents of this invention can be combined with aqueous sols of surface treated, colloidal inorganic oxide particles having a negative surface charge without destabilizing the negatively charged colloids. It has further been discovered that the combination of the antistatic agent and negatively charged, surface treated colloids of this invention interspersed in a cured ceramer matrix unexpectedly provides dramatic improvements in antistatic protection. The antistatic approach of this invention also provides excellent antistatic protection over a wide range of relative humidity, including conditions in which RH is below 40%, especially at 15% to 40% RH.

Abstract: The present invention relates to ceramer compositions capable of being cured to form antistatic, abrasion resistant ceramers. The ceramer compositons comprise a plurality of colloidal silica particles, a binder precursor, and an electrically conductive organic polymer, for example, polythiophene. The present invention also relates to ceramer articles, for example, ceramer coatings and shaped ceramer particles made from the ceramer compositions and to methods of making the ceramer compositions and ceramer articles.

Abstract: Described are coatings, composite structures containing coatings, and compositions for preparing and methods of preparing coatings and composite structures, wherein the compositions comprise inorganic oxide particles and polymerizable brominated compounds, and coatings comprise inorganic oxide particles and a brominated polymer.

Abstract: Strippable, primerless, radiation curable protective coatings for silver, nickel, brass and aluminum surfaces comprising(a) colloidal inorganic oxide particles of diameter less than 50 nanometers;(b) non-silyl polyethylenically unsaturated monomers and oligomers; and(c) catalytic amounts of suitable photo-initiators.The cured protective coatings are useful for shaped metal objects and for metal coated thermoplastic substrates.

Abstract: The invention relates to optically transmissive, silica-containing compositions which exhibit a small change of refractive index with respect to temperature changes (dn.sub.g /dT). The compositions are derived from silica sols dispersed in liquid organic polymers. The invention relates to optical systems comprising a plurality of elements that are optically interconnected by means of the inventive composition. An especially preferred embodiment of the invention is the use of the composition within a connector to simultaneously align and join optical fibers.

Abstract: Retroreflective sheeting having an abrasion-resistant ceramer coating that is prepared from about 20% to about 80% ethylenically unsaturated monomers; about 10% to about 50% of acrylate functionalized colloidal silica; and about 5% to about 40% N,N-disubstituted acrylamide or N-substituted-N-vinyl-amide monomer having a molecular weight between 99 and 500 atomic mass units; wherein said percentages are weight percents of the total weight of said coating. A method of coating retroreflective sheeting with an abrasion-resistant cured ceramer layer is also disclosed.

Abstract: A coated product comprises a thermoplastic sheet support bearing on at least one surface an adhesion promoting cured layer comprising a composition of:1) 30-80% by weight individually dispersed colloidal metal oxide particles, preferably silica, alumina and/or zirconia particles of average particle size 10-100 nanometers,2) 20-70% by weight crosslinked polymer matrix derived from one or more polyethylenically unsaturated monomers, and3) a photoinitiator.Preferred embodiments of this invention include coated abrasive product in which the primed surface of the support layer is coated with a thermosetting binder containing abrasive particulates, and tape products in which the primed surface of the support layer is coated with a pressure-sensitive adhesive or magnetic media.

Abstract: The present invention provides an acid-resistant protective coating, preferably an acid- and abrasion-resistant protective coating, for thermoplastic transparencies, particularly aircraft transparencies. The coating is prepared from a silica-free protective coating precursor composition comprising a multifunctional ethylenically unsaturated ester of acrylic acid, a multifunctional ethylenically unsaturated ester of methacrylic acid, or a combination thereof; and an acrylamide.

Abstract: Abrasive articles comprising a plurality of abrasive grits and a cured ceramer. The cured ceramer is formed from a liquid dispersion comprising a dispersing liquid and non-aggregated colloidal metal oxide particles dispersed in the dispersing liquid, wherein the dispersing liquid comprises a free-radically polymerizable composition.

Abstract: The invention relates to optically transmissive, silica-containing compositions which exhibit a small change of refractive index with respect to temperature changes (dn.sub.g /dT). The compositions are derived from silica sols dispersed in liquid organic polymers. The invention relates to optical systems comprising a plurality of elements that are optically interconnected by means of the inventive composition. An especially preferred embodiment of the invention is the use of the composition within a connector to simultaneously align and join optical fibers.

Abstract: Transparent abrasion resistant coatings capable of withstanding 1000 hours of accelerated weathering are comprised of colloidal silicon dioxide particles dispersed in ethylenically unsaturated aliphatic and/or cycloaliphatic monomers that are substituted by a protic group. The coatings are useful in protecting plastic, wood, metal and ceramic surfaces.

Abstract: A composition that is a primer or adhesive for adherence of overcoating functional layers to inorganic oxide-containing substrate, particularly silicon oxide-containing substrates is described. The composition is particularly useful for the adherence of a pavement marking tape to a pavement.

Abstract: A coating composition comprising a substantially water-free dispersion of colloidal silica, a polyacryloyl monomer, and a free radical initiator.

Abstract: A reduced friction composite sheet construction comprises a semicrystalline polymeric sheet support having a first and second surface, said surfaces having in the range of 5 to 99 percent crystalline polymeric material and 1 to 95 percent amorphous polymeric material, said first surface having been subjected to sputter-etching which preferentially ablates said amorphous material compared to said crystalline material so as to provide on said first surface ridges or needles of amplitude in the range of 0.01 to 5.0 micrometers, and a separation at their apexes in the range of 0.01 to 1.0 micrometers and having an aspect ratio in the range of 0.5 to 7, said first surface having at least one of static and dynamic coefficients of friction in the range of 0.01 to 0.7, and at least one functional layer coated on said second surface of said support.