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US 2017/0361579 A1Published application
Interlayers comprising optical films having enhanced optical properties
AssigneeSolutia Inc.
InventorsWENJIE CHEN, BIN WANG, JEFFREY B HURLBUT, LORA LEE SPANGLER, PETER BORDEN MACKENZIE, DAVID WILLIAM NORMAN
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Abstract
An interlayer comprising a first polymer layer, a polarization rotary optical film and optionally a second polymer layer, and multiple layer panels formed from such interlayers. The panels may exhibit desirable optical properties, including, for example, less image “ghosting,” when used as part of a heads-up-display (HUD) display panel for use in automotive and aircraft applications.
Claims20
An interlayer comprising:
- a first polymer layer comprising a poly(vinyl acetal);
- a polarization rotary optical film,
- wherein the optical film has in-plane retardation (Re) that is greater than about (⅜+n)*λ and less than about (⅝+n)*λ, where n is 0 or any integer.
An interlayer comprising:
- a first polymer layer comprising a poly(vinyl acetal);
- a polarization rotary optical film, wherein the optical film has in-plane retardation (Re) that is greater than about (⅜+n)*λ and less than about (⅝+n)*λ, where n is 0 or any integer, and wherein the optical film has at least one of the following properties (i) to (iv) below:
- (i) a glass transition temperature (Tg) or melt temperature (Tm) of greater than 150° C.;
- (ii) a dimension change of less than 2.5% in at least one of the machine direction and cross machine direction;
- (iii) a dimension change of less than 2.5% in both the machine direction and cross machine direction;
- or
- (iv) the absolute value of the difference between the machine direction dimension change and the cross machine direction dimension change is less than 2.5%;
- and
- a second polymer layer comprising a poly(vinyl acetal);
- wherein the optical film is disposed between the first polymer layer and the second polymer layer.
7 more elements
An interlayer comprising:
- a first polymer layer comprising a poly(vinyl acetal) resin and at least one plasticizer or mixture of plasticizers wherein each plasticizer is selected from benzoates, mixtures of benzoates and other plasticizers, and combinations thereof;
- a polarization rotary optical film comprising a cellulose ester, a polycarbonate, a co-polycarbonate, a cyclic olefin polymer, a cyclic olefin copolymer, a polyester, a co-polyester, a polymerized thermotropic liquid crystal, a dried lyotropic liquid crystals and combinations thereof, wherein the optical film has in-plane retardation (Re) that is greater than about (⅜+n)*λ and less than about (⅝+n)*λ, where n is 0 or any integer, wherein the optical film has at least one of the following properties (i) to (iv) below:
- (i) a glass transition temperature (Tg) or melt temperature (Tm) of greater than 150° C.;
- (ii) a dimension change of less than 2.5% in at least one of the machine direction and cross machine direction;
- (iii) a dimension change of less than 2.5% in both the machine direction and cross machine direction;
- or
- (iv) the absolute value of the difference between the machine direction dimension change and the cross machine direction dimension change is less than 2.5%;
- and
- a second polymer layer comprising a poly(vinyl acetal) resin and at least one plasticizer or mixture of plasticizers, wherein each plasticizer is selected from benzoates, mixtures of benzoates and other plasticizers, and combinations thereof, and
- wherein the optical film is disposed between the first polymer layer and the second polymer layer.
7 more elements
Dependencies are inferred from the claim text.