摘要:
The present invention relates to multilayer optical films and birefringent copolyester films. The birefringent copolyester optical layer or birefringent copolyester film comprises a major amount of naphthalate units, ethylene units, and a minor amount of branched or cyclic C4 to C10 alkyl units. Also described are certain copolyester polymeric materials further comprising subunits of a phthalate ionomer such as dimethyl sulfosodium isophthtalate ionomer.
摘要:
The present invention relates to multilayer optical films and birefringent copolyester films. The birefringent copolyester optical layer or birefringent copolyester film comprises a major amount of naphthalate units, ethylene units, and a minor amount of branched or cyclic C4 to C10 alkyl units. Also described are certain copolyester polymeric materials further comprising subunits of a phthalate ionomer such as dimethyl sulfosodium isophthtalate ionomer.
摘要:
Presently described are multilayer optical films, oriented polyester films, negatively birefringent copolyester polymers, fluorene monomers, and polyester polymers prepared from such fluorene monomers. In one embodiment, the multilayer optical film comprises at least one first birefringent optical layer; and at least one second optical layer having a lower birefringence than the first optical layer; wherein at least one of the optical layers comprises a negatively birefringent polyester polymer comprising a backbone and repeat units comprising at least one pendent aromatic group that is conformationally locked relative to the backbone.
摘要:
The present invention relates to multilayer optical films and birefringent copolyester films. The birefringent copolyester optical layer or birefringent copolyester film comprises a major amount of naphthalate units, ethylene units, and a minor amount of branched or cyclic C4 to C10 alkyl units. Also described are certain copolyester polymeric materials further comprising subunits of a phthalate ionomer such as dimethyl sulfosodium isophthalate ionomer.
摘要:
Optical film laminates of birefringent polyester films and adhesive are disclosed. The laminates have a thickness of at least 10 mils (0.25 mm). The laminates of the invention are useful in displays having a diagonal of 37 in (94 cm) or greater.
摘要:
Multilayer optical films are described comprising at least one first optical layer comprising a birefringent thermoplastic polymer having an in-plane birefringence of at least 0.15 at 632.8 nm; and at least one second optical layer having an in-plane birefringence of less than 0.040 at 632.8 nm. The second optical layer comprises a copolymerized blend of at least one birefringent thermoplastic polymer and at least one second thermoplastic polymer.
摘要:
Multilayer optical films are described comprising at least one first optical layer comprising a birefringent thermoplastic polymer having an in-plane birefringence of at least 0.15 at 632.8 nm; and at least one second optical layer having an in-plane birefringence of less than 0.040 at 632.8 nm. The second optical layer comprises a copolymerized blend of at least one birefringent thermoplastic polymer and at least one second thermoplastic polymer.
摘要:
Optical film laminates of birefringent polyester films and adhesive are disclosed. The laminates have a thickness of at least 10 mils (0.25 mm). The laminates of the invention are useful in displays having a diagonal of 37 in (94 cm) or greater.
摘要:
An article that is suitable for use as a solar concentrating mirror for enhancing the use of solar collection devices, such as solar cells. The article includes a multilayer optical film and a compliant UV protective layer. The article addresses degradation issues in solar concentration devices, provides specific bandwidths of electromagnetic energy to the solar cell while eliminating or reducing undesirable bandwidths of electromagnetic energy that may degrade or adversely affect the solar cell, and renders a compliant sheet of material that may be readily formed into a multitude of shapes or constructions for end use applications.
摘要:
A linear friction welding system includes a power shaft defining a power shaft axis and including a first eccentric portion and a first power transfer portion, a power transfer rod engaged with the first power transfer portion, an actuator assembly operably coupled with the power transfer rod and configured to move the power transfer rod axially along the power shaft axis, a crank including a second eccentric portion operably coupled with the first eccentric portion, and a second power transfer portion engaged with the power transfer rod, the linear friction welding system configured such that axial movement of the power transfer rod causes rotational movement of the crank with respect to the power shaft about the power shaft axis, a cam follower operably connected to an outer surface of the second eccentric portion, and a ram operably connected to the cam follower and configured to vibrate along a welding axis.