US5466491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable silicon containing polyarcylate hardcoat compositions, method for making, and use
Assignee: General Electric Co
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Filing: 1994-09-12
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Granted: 1995-11-14
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Expires: 2014-09-12
Abstract
Abstract There is provided a method and a composite made therefrom of an organic substrate, such as a polycarbonate and a radiation cured silicon containing polyacrylate hardcoat. Improved weathering resistance results when an anaerobic gelation inhibitor such as galvinoxyl is used during the processing of the hardcoat.
Inventors
- 👤 Arnold Factor
- 👤 Larry N. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:59
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/08; C08; C08K; C08K9/00; C08K9/08; C08K9/04; C09D4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
149 words
A method for making a composite comprising (A) an organic substrate and (B) a cured silicon containing polyacrylate hardcoat composition, which method comprises, (i) treating at least a portion of the surface of the organic substrate with a devolatilized radiation curable silicon containing polyacrylate hardcoat composition, and, (ii) effecting the radiation cure of the devolatilized curable silicon containing polyacrylate hardcoat composition, where the radiation curable silicon containing polyacrylate hardcoat composition comprises the devolatilized product of reaction at a temperature of about 25° C. to 100° C. of a mixture comprising by weight, (iii) 100 parts of a water miscible solvent; (iv) about 75 parts of silylated colloidal silica silylated with alkoxysilylacrylate, (v) 10 to about 400 parts of a reactive polyfunctional acrylic monomer, and (vi) an effective amount of anaerobic gelation inhibitor selected from the group consisting of 2,2,6,6-tetramethylpiperidinyloxy, 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy, bis(4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy sebacate diradical, 2,2-diphenyl-1-picrylhydrazyl, 1,3,5-triphenylverdazyl, 1-nitroso-2-naphthol, a nitrone, ##STR12##
Claim 2
Independent Claim
149 words
A method for making a composite comprising (A) an organic substrate and (B) a cured silicon containing polyacrylate hardcoat composition, which method comprises, (i) treating at least a portion of the surface of the organic substrate with a devolatilized radiation curable silicon containing polyacrylate hardcoat composition, and, (ii) effecting the radiation cure of the devolatilized curable silicon containing polyacrylate hardcoat composition, where the radiation curable silicon containing polyacrylate hardcoat composition comprises the devolatilized product of reaction at a temperature of about 25° C. to 100° C. of a mixture comprising by weight, (iii) 100 parts of a water miscible solvent; (iv) about 75 parts of silylated colloidal silica silylated with alkoxysilylacrylate, (v) 10 to about 400 parts of a reactive polyfunctional acrylic monomer, and (vi) an effective amount of anaerobic gelation inhibitor selected from the group consisting of 2,2,6,6-tetramethylpiperidinyloxy, 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy, bis(4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy sebacate diradical, 2,2-diphenyl-1-picrylhydrazyl, 1,3,5-triphenylverdazyl, 1-nitroso-2-naphthol, a nitrone, ##STR12##
Claim 3
Dependent Claim
15 words
A method in accordance with claim 1, where the organic substrate is a polycarbonate substrate.
Claim 4
Dependent Claim
15 words
A method in accordance with claim 1, where the colloidal silica is silylated with methylacryloxypropyltrimethoxysilane.
Claim 5
Dependent Claim
15 words
A method in accordance with claim 1, where the reactive polyfunctional acrylic monomer is hexanedioldiacrylate.
Claim 6
Dependent Claim
18 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is represented by the formula ##STR13##
Claim 7
Dependent Claim
14 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy.
Claim 8
Dependent Claim
14 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is 2,2,6,6-tetramethylpiperidinyloxy.
Claim 9
Dependent Claim
14 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is 2,2-diphenyl-1-picryl-hydrazyl.
Claim 10
Dependent Claim
18 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is represented by the formula ##STR14##
Claim 11
Dependent Claim
15 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is 1,3,5,-triphenyl verdazyl.
Claim 12
Dependent Claim
18 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is represented by the formula ##STR15##
Claim 13
Dependent Claim
14 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is 1-nitroso-2-naphthol.
Claim 14
Dependent Claim
15 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is a nitrone.
Claim 15
Dependent Claim
16 words
A method in accordance with claim 1, where the anaerobic gelation inhibitor is bis(2,2,6,6-tetramethyl-4-piperidinyloxy) sebacate diradical.
Claim 16
Dependent Claim
96 words
A composite comprising (C) an organic substrate having at least a portion of its surface treated with (D) a radiation cured silicon containing polyacrylate hardcoat composition, which is the product of reaction of a devolatilized mixture comprising by weight, (vi) 100 parts of a water miscible organic solvent, (vii) 1 to about 75 parts of colloidal silica silylated with alkoxysilylacrylate, (viii) 10 to about 400 parts of reactive acrylic monomer, and (x) an effective amount of anaerobic gelation inhibitor selected from the group consisting of 2,2,6,6-tetramethylpiperidinyloxy, 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy, bis(4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy sebacate diradical, 2,2-diphenyl-1-picrylhydrazyl, 1,3,5-triphenylverdazyl, 1-nitroso-2-naphthol, a nitrone, ##STR16##
Claim 17
Dependent Claim
96 words
A composite comprising (C) an organic substrate having at least a portion of its surface treated with (D) a radiation cured silicon containing polyacrylate hardcoat composition, which is the product of reaction of a devolatilized mixture comprising by weight, (vi) 100 parts of a water miscible organic solvent, (vii) 1 to about 75 parts of colloidal silica silylated with alkoxysilylacrylate, (viii) 10 to about 400 parts of reactive acrylic monomer, and (x) an effective amount of anaerobic gelation inhibitor selected from the group consisting of 2,2,6,6-tetramethylpiperidinyloxy, 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy, bis(4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy sebacate diradical, 2,2-diphenyl-1-picrylhydrazyl, 1,3,5-triphenylverdazyl, 1-nitroso-2-naphthol, a nitrone, ##STR16##
Claim 18
Dependent Claim
18 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is represented by the formula ##STR17##
Claim 19
Dependent Claim
14 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy.
Claim 20
Dependent Claim
14 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is 2,2,6,6-tetramethylpiperidinyloxy.
Claim 21
Dependent Claim
14 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is 2,2-diphenyl-1-picryl-hydrazyl.
Claim 22
Dependent Claim
18 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is represented by the formula ##STR18##
Claim 23
Dependent Claim
15 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is 1,3,5,-triphenyl verdazyl.
Claim 24
Dependent Claim
18 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is represented by the formula ##STR19##
Claim 25
Dependent Claim
14 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is 1-nitroso-2-naphthol.
Claim 26
Dependent Claim
15 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is a nitrone.
Claim 27
Dependent Claim
16 words
A composite in accordance with claim 15, where the anaerobic gelation inhibitor is bis(2,2,6,6-tetramethyl-4-piperidinyloxy) sebacate diradical.
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