Patent EP0475592A2 successfully refreshed from Google Patents.
EP0475592A2
Expired / Lapsed
EP
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Coated article having improved adhesion to organic coatings
Assignee: 3M Co
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Filing: 1991-08-13
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Granted: —
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Expires: 2011-08-13
Abstract
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.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 01:19
CPC Classifications
B; B32; B32B; B32B27/00; G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; C; C08; C08J; C08J7/00; C08J7/04; C08J7/043; C09; C09J; C09J7/00; C09J7/50; G11; G11B; G11B5/00; G11B5/62; G11B5/73; G11B5/733; G11B5/739; G11B5/73923; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A multilayered article comprising a flexible polymeric substrate having on at least one surface thereof a primer layer comprising the cured product of a composition comprising: a) at least 5 % by weight of a polyfunctional acryloyl monomer, and b) 5-80 % by weight of colloidal silica said composition comprising at least 15 % by weight of materials that are polymerizable acryloyl materials, inclusive of component a).
Claim 2
Dependent Claim
26 words
The article of claim 1 wherein said colloidal silica is provided in a liquid phase having less than 3% by weight of said phase as water.
Claim 3
Dependent Claim
39 words
The article of claims 1 or 2 wherein 0.1 to 25 % by weight of said composition comprises a diluent selected from the group consisting of a polymerizable diluent or a binder resin soluble in said polymerizable acryloyl monomers.
Claim 4
Dependent Claim
19 words
The article of claims 1 or 2 wherein said primer layer contains the residue of a free radical photoinitiator.
Claim 5
Dependent Claim
42 words
The article of claims 1 or 2 where there is a functional layer over said primer layer selected from the group consisting of an abrasive particle containing layer, a photosensitive imageable layer, a pressure-sensitive adhesive layer, and a magnetic recording media layer.
Claim 6
Dependent Claim
40 words
The article of claim 3 where there is a functional layer over said primer layer selected from the group consisting of an abrasive particle containing layer, a photosensitive imageable layer, a pressure-sensitive adhesive layer, and a magnetic recording media layer.
Claim 7
Dependent Claim
40 words
The article of claim 5 where there is a functional layer over said primer layer selected from the group consisting of an abrasive particle containing layer, a photosensitive imageable layer, a pressure-sensitive adhesive layer, and a magnetic recording media layer.
Claim 8
Independent Claim
101 words
A method for adhering a coating to a substrate comprising the steps of a) providing a flexible polymeric substrate, b) applying to at least one surface of said substrate a composition that comprises 5-80 % by weight of colloidal silica in a liquid phase having less than 3% by weight of said liquid phase as water, 5-95 % by weight of a polymerizable polyacryloyl material, and an effective amount of an activatable free radical initiatior, c) activating said free radical initiator, d) allowing said composition to cure to form a cured composition, and e) applying a coating over said cured composition.
Claim 9
Dependent Claim
32 words
The method of claim 8 wherein said initiator is a photoinitiator in a weight percentage of said composition of 0.1 to 10 % and said activating is accomplished by photoinitiation or heating.
Claim 10
Independent Claim
29 words
The method of claims 8 or 9 wherein said coating is an abrasive particle containing layer, a pressure-sensitive adhesive layer, or comprises a binder with magnetically sensitive particles therein.
References Cited (Backward Citations)
No citation records indexed.
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