Coated article having improved adhesion to organic coatings
AssigneeMinnesota Mining and Manufacturing Company
InventorZayn Bilkadi
Life of this patent
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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, and 3) 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.
Claims21
A multilayered article comprising a flexible polymeric substrate having on at least one surface thereof a primer layer and over that primer layer an organic polymeric coating, said primer layer comprising the cured product of a composition comprising
- a) at least 5% by weight of a polyfunctional acryloyl monomer, and said composition containing less than 10% by weight of any silicone materials, and
- b) 5-80% by weight of colloidal silica particles, said silica particles being individually dispersed in said composition,
- said composition comprising at least 15% by weight of materials that are polymerizable acryloyl materials, inclusive of component a).
A multilayered article comprising a polymeric substrate having on at least one surface thereof a primer layer and over that primer layer an organic polymeric coating, said primer layer comprising the cured product of a composition comprising
- a) at least 5% by weight of a polyfunctional acryloyl monomer, and said composition containing less than 10% by weight of any silicone materials, and
- b) 5-80% by weight of colloidal silica particles, said silica particles being individually dispersed in said composition,
- said composition comprising at least 15% by weight of materials that are polymerizable acryloyl materials, inclusive of component a).
Dependencies are inferred from the claim text.