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US4822828A Expired / Lapsed US ⏱️ 0.0 years remaining

Radiation curable coating composition based on a silica/vinyl-functional silanol dispersion

Assignee: Mitsubishi Chemical America Inc
•
Filing: 1987-11-23
•
Granted: 1989-04-18
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Expires: 2007-11-23
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Abstract

Abstract A aqueous, radiation curable, coating composition is disclosed which comprises: (A) from 50 to 85 percent, based on the total weight of the dispersion, of a vinyl functional silane, (B) from 15 to 50 percent, based on the total weight of the dispersion of a multifunctional acrylate, and (C) optionally, from 1 to 3 weight percent of a photoinitiator. The vinyl-functional silane is the partial condensate of silica and a silane, such that at least sixty percent of the silane is a vinyl-functional silane conforming to the formula (R)aSi(R')b(R'')c wherein R is allyl or vinyl functional alkyl R' is hydrolyzable alkoxy or methoxy R'' is non-hydrolyzable, saturated alkyl, phenyl, or siloxy, such that a+b+c=4; and a>/=1; b>/=1; c>/=0. The above described coating composition may be applied to plastic materials and cured by exposure to ultraviolet or electron beam irradiation to form a substantially clear, abrasion resistant layer. The radiation curable composition has particular utility as an abrasion resistant coating for synthetic films, preferably polyester films. Such coated films may then be employed in automotive glazing and touch panel control applications.

Inventors

  • 👤 Howard W. Swofford

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 09:54
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/043; C08J7/06; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/1033; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/306; C08F; C08F299/00; C08J7/0427; C08J7/046; C09; C09D; C09D4/00; B32B2307/00; B32B2307/50; B32B2307/554; B32B2329/00; B32B2329/06; B32B2605/00; B32B2605/08; C08J2483/00; C08J2483/04

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 100 words
A radiation curable composition comprising: (a) from 50 to 85 percent, based on the total weight of the composition, of colloidal silica and the partial condensate of a silane, such that at least sixty percent of the silane is a vinyl-functional silane conforming to the formula (R).sub.a Si(R').sub.b (R").sub.c wherein R is allyl or vinyl-functional alkyl R' is hydrolyzable alkoxy or phenoxy R" is non-hydrolyzable, saturated alkyl, phenyl, or siloxy such that a+b+c=4; and a≧1; b≧1; c≧0, (b) from 15 to 50 percent, based on the total weight of the composition, of one or more multifunctional acrylate or methacrylate monomers.
Claim 2
Dependent Claim 100 words
A radiation curable composition comprising: (a) from 50 to 85 percent, based on the total weight of the composition, of colloidal silica and the partial condensate of a silane, such that at least sixty percent of the silane is a vinyl-functional silane conforming to the formula (R).sub.a Si(R').sub.b (R").sub.c wherein R is allyl or vinyl-functional alkyl R' is hydrolyzable alkoxy or phenoxy R" is non-hydrolyzable, saturated alkyl, phenyl, or siloxy such that a+b+c=4; and a≧1; b≧1; c≧0, (b) from 15 to 50 percent, based on the total weight of the composition, of one or more multifunctional acrylate or methacrylate monomers.
Claim 3
Dependent Claim 14 words
The composition of claim 1 further comprising up to 10 percent of a photoinitiator.
Claim 4
Dependent Claim 30 words
The composition of claim 1 wherein said vinyl silane is selected from the group consisting of vinyltris(2-methoxyethoxy)silane, vinyltriethoxysilane, vinyltriisopropenoxysilane, phenylvinyldiethoxysilane, vinyltris(t-butylperoxy)silane, vinyl-methyldiethoxysilane, vinyltris-t-butoxysilane, vinyldimethylethoxysilane, vinyltriphenoxysilane, diphenylvinylethoxysilane, vinyltrimethoxysilane, 1,3-divinyltetraethoxydisiloxane, and vinyltriisopropoxysilane.
Claim 5
Dependent Claim 20 words
The composition of claim 3 wherein said vinyl silane is selected from the group consisting of vinyltriethoxysilane, vinyltrimethoxysilane, and vinyltris(2-methoxyethoxy)silane.
Claim 6
Dependent Claim 11 words
The composition of claim 4 wherein said vinyl silane is vinyltrimethoxysilane.
Claim 7
Dependent Claim 15 words
The composition of claim 2 wherein said photoinitiator is a blend of benzophenone and 1-hydroxycyclohexylphenylketone.
Claim 8
Dependent Claim 28 words
The composition of claim 1 further comprising from 1 to 35 weight percent, based upon the total weight of the composition, of at least one water soluble alkanol.
Claim 9
Dependent Claim 30 words
The composition of claim 7 wherein said water soluble alkanol comprises isopropanol in an amount ranging from 15 to 25 weight percent, based on the total weight of the composition.

References Cited (Backward Citations)

US3986997A Cited
US4474857A Cited
US4348462A Cited
JPS581756A Cited
US4455205A Cited
US4491508A Cited
US4482656A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-04-17 1992-10-17 1993-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-04-17 1996-10-17 1997-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-04-17 2000-10-17 2001-04-18 $7700.00 Window Closed / Lapsed

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