摘要:
The present invention relates to conjugated polymers and a method for their synthesis. Furthermore, the present invention relates to electro-synthesis methods for producing polymers that include the use of at least one Lewis acid and at least one proton trap to form organic conjugated polymers having elevated refractive indices. In one embodiment, the present invention relates to an organic polymer having an elevated refractive index, the organic polymer formed by a process comprising the steps of: providing a solution of unsaturated organic monomer units and at least one acidic component; impeding saturation of the unsaturated organic-monomer units by at least one protic element in the solution; and polymerizing the unsaturated organic monomer units to form a conjugated organic polymer having a refractive index of at least about 2.3 for electromagnetic energy having a wavelength of about 700 nm.
摘要:
The present invention relates to conjugated polymers and a method for their synthesis. Furthermore, the present invention relates to electro-synthesis methods for producing polymers that include the use of at least one Lewis acid and at least one proton trap to form organic conjugated polymers having elevated refractive indices. In one embodiment, the present invention relates to an organic polymer having an elevated refractive index, the organic polymer formed by a process comprising the steps of: providing a solution of unsaturated organic monomer units and at least one acidic component; impeding saturation of the unsaturated organic-monomer units by at least one protic element in the solution; and polymerizing the unsaturated organic monomer units to form a conjugated organic polymer having a refractive index of at least about 2.3 for electromagnetic energy having a wavelength of about 700 nm.
摘要:
The present invention relates to conjugated polymers and a method for their synthesis. Furthermore, the present invention relates to electro-synthesis methods for producing polymers that include the use of at least one Lewis acid and at least one proton trap to form organic conjugated polymers having elevated refractive indices. In one embodiment, the present invention relates to an organic polymer having an elevated refractive index, the organic polymer formed by a process comprising the steps of: providing a solution of unsaturated organic monomer units and at least one acidic component; impeding saturation of the unsaturated organic-monomer units by at least one protic element in the solution; and polymerizing the unsaturated organic monomer units to form a conjugated organic polymer having a refractive index of at least about 2.3 for electromagnetic energy having a wavelength of about 700 nm.
摘要:
The present invention relates to conjugated polymers and a method for their synthesis. Furthermore, the present invention relates to electro-synthesis methods for producing polymers that include the use of at least one Lewis acid and at least one proton trap to form organic conjugated polymers having elevated refractive indices. In one embodiment, the present invention relates to an organic polymer having an elevated refractive index, the organic polymer formed by a process comprising the steps of: providing a solution of unsaturated organic monomer units and at least one acidic component; impeding saturation of the unsaturated organic-monomer units by at least one protic element in the solution; and polymerizing the unsaturated organic monomer units to form a conjugated organic polymer having a refractive index of at least about 2.3 for electromagnetic energy having a wavelength of about 700 nm.
摘要:
A multilayer optical retardation compensation film having at least one positive C-plate and at least one negative C-plate is used in an LCD device. The multilayer film may have a substantially flat wavelength dispersion curve, or the multilayer film combined with other layers in the LCD device may have a substantially flat wavelength dispersion curve. Polymer films for the positive C-plate may be identified according to their absorbance maxima at certain wavelength ranges.
摘要:
A multilayer optical retardation compensation film having at least one positive C-plate and at least one negative C-plate is used in an LCD device. The multilayer film may have a substantially flat wavelength dispersion curve, or the multilayer film combined with other layers in the LCD device may have a substantially flat wavelength dispersion curve. Polymer films for the positive C-plate may be identified according to their absorbance maxima at certain wavelength ranges.
摘要:
Polyimides serve as reinforcing rigid-backbone segments in nylon 6 copolymers. In a first embodiment, the copolymers are prepared from polyimides containing acylated caprolactam moieties pendant therefrom which provide sites for polycaprolactam grafts. In a second embodiment, polyimide oligomers end-capped with acyl-activated caprolactam rings permit the formation of block caprolactam copolymers that include polyimide reinforcing segments. The polyimide/nylon 6 copolymers have properties superior to those of nylon 6 and can also serve as compatibilizing agents.
摘要:
A negative birefringent film, useful in liquid crystal displays, and a method for controlling the negative birefringence of a polyimide film is disclosed which allows the matching of an application to a targeted amount of birefringence by controlling the degree of in-plane orientation of the polyimide by the selection of functional groups within both the diamine and dianhydride segments of the polyimide which affect the polyimide backbone chain rigidity, linearity, and symmetry. The higher the rigidity, linearity and symmetry of the polyimide backbone, the larger the value of the negative birefringence of the polyimide film.
摘要:
Pulse compensation is disclosed for electronic devices capable of producing a pulse output signal suitable for therapeutic purposes with pulse compensation being automatically provided upon sensing of a change in the conditions being monitored. The electronic device, which preferably includes a micro-computer, has externally accessible pulse width and intensity controls for determining the width and amplitude of pulses then being delivered. Upon each sensing of a change in a monitored condition capable of causing user discomfort or possible injury, the intensity of the pulses then being delivered is quickly reduced and then gradually increased toward the full intensity requested by the intensity control. Pulse compensation is also provided when the pulse width is varied by the pulse width control to thereby automatically cause a corresponding change in the range of intensities of the pulses then delivered, based upon a nerve fiber strength-duration curve of the pulses, to thereby maintain the stimulation capability of the pulses substantially constant at a percentage of intensity as determined by the intensity control.
摘要:
A polyphenylquinoxaline which consists of 1 to 100 mole percent of structural elements of the formula (IV) ##STR1## and of 0-99 mole percent of the following repeat unit of formula (V) ##STR2## where R is selected from the group consisting of H, an alkyl group, a carbocyclic aromatic group, a heterocyclic aromatic group, or an alkoxy group, Ar.sub.1 is a carbocyclic aromatic or heterocyclic aromatic group, and B is selected from the representative group consisting of:Ar.sub.2 --Z--Ar.sub.3 (i)where Ar.sub.2 and Ar.sub.3 are the same or different carbocyclic aromatic or heterocyclic aromatic group and Z is selected from the representative group consisting of CO, SO or SO.sub.2 ;Z'--Ar.sub.4 --Z' (ii)where Z' is an activated carbocyclic aromatic or heterocyclic aromatic group and Ar.sub.4 is an aliphatic group, a carbocyclic aromatic or heterocyclic aromatic group. A process for manufacture a self polymerizable phenylquinoxaline subject to polymerization by aromatic nucleophilic substitution. The use of these polyphenylquinoxalines and there copolymers as thermally stable thermal plastics for use in aerospace, high temperature adhesive, microelectronic and membrane (gas and molecular separation membrane) application.