Light modulating device having a matrix prepared from acid reactants
First Claim
1. An optically responsive film comprising liquid crystal dispersed in a polymer matrix comprising the reaction product of (1) one or more polymerizable matrix reactants other than an acid reactant and (2) at least one acid reactant copolymerizable with said one or more matrix reactants in an amount ranging from about 2 to about 15 weight percent,said amount being sufficient to enhance the T-peel strength of said film by a factor of at least 2 relative to the same film prepared in the absence of said acid reactant,said acid reactant comprising an unsaturated carboxylic acid, a mono-ester of a dicarboxylic acid, an amine-functional carboxylic acid, a hydroxy-functional carboxylic acid, a mercapto-functional carboxylic acid, or a sulfonic acid.
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Abstract
An optically responsive film that includes liquid crystal dispersed in a polymer matrix that includes the reaction product of (1) one or more polymerizable matrix reactants other than an acid reactant and (2) at least one copolymerizable acid reactant.
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Citations
24 Claims
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1. An optically responsive film comprising liquid crystal dispersed in a polymer matrix comprising the reaction product of (1) one or more polymerizable matrix reactants other than an acid reactant and (2) at least one acid reactant copolymerizable with said one or more matrix reactants in an amount ranging from about 2 to about 15 weight percent,
said amount being sufficient to enhance the T-peel strength of said film by a factor of at least 2 relative to the same film prepared in the absence of said acid reactant, said acid reactant comprising an unsaturated carboxylic acid, a mono-ester of a dicarboxylic acid, an amine-functional carboxylic acid, a hydroxy-functional carboxylic acid, a mercapto-functional carboxylic acid, or a sulfonic acid.
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22. An optically responsive film comprising liquid crystal dispersed in a polymer matrix comprising the reaction product of (1) one or more polymerizable matrix reactants other than an acid reactant and (2) at least one acid reactant copolymerizable with said one or more matrix reactants in an amount ranging from about 2 to about 15 weight percent,
said acid reactant comprising an unsaturated carboxylic acid, a mono-ester of a dicarboxylic acid, an amine-functional carboxylic acid, a hydroxy-functional carboxylic acid, a mercapto-functional carboxylic acid, or a sulfonic acid.
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23. A light modulating device comprising an optically responsive film to which an electric field is applied through a pair of electrodes,
said optically responsive film comprising liquid crystal dispersed in a polymer matrix that comprises the reaction product of (1) one or more polymerizable matrix reactants other than an acid reactant and (2) at least one acid reactant copolymerizable with said one or more matrix reactants in an amount ranging from about 2 to about 15 weight percent, said amount being sufficient to enhance the T-peel strength of said film by a factor of at least 2 relative to the same film prepared in the absence of said acid reactant, said acid reactant comprising an unsaturated carboxylic acid, a mono-ester of a dicarboxylic acid, an amine-functional carboxylic acid, a hydroxy-functional carboxylic acid, a mercapto-functional carboxylic acid, or a sulfonic acid.
Specification
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- Resources
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Current AssigneeMinnesota Mining and Manufacturing Co (3M Company)
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Original AssigneeMinnesota Mining and Manufacturing Co (3M Company)
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InventorsNerad, Bruce A., Vesley, George F.
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Primary Examiner(s)Kelly, Cynthia Harris
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Application NumberUS08/484,690Time in Patent Office587 DaysField of Search252/299.01, 359/51, 359/52US Class Current252/299.01CPC Class CodesC09K 19/544 as dispersing or encapsulat...
