摘要:
The present invention is directed toward anionic polymerization employing lithio amines mixed with an organic alkali metal compound and optionally, a chelating reagent. The lithio amines have the general formula (A)Li(SOL).sub.y, where SOL is a solubilizing component, A is an alkyl, dialkyl, cycloalkyl or dicycloalkyl amine radical or a cyclic amine, and y is 0 or is from about 0.5 to about 3. The invention is also directed toward polymers and other products made using the initiator, and methods therefor. Further, the invention contemplates a polymer, a polymer composition and products therefrom, which include a functional group from the reaction product of an amine and an organolithium compound. The resulting polymers may be terminated with a terminating, coupling or linking agent, which may provide the polymer with a multifunctionality.
摘要:
A non-aqueous liquid electrolyte cell comprising a positive electrode having an active material of conductive organic polymer, typically polyaniline on a support, a negative electrode having an active material of lithium or lithium alloy, and a non-aqueous electrolyte solution exhibits improved performance when the electrolyte solution contains an electrolyte in a non-aqueous solvent mixture of a non-cyclic carbonate and a cyclic carbonate.
摘要:
A method for preparing high-purity bisphenol A which comprises a principal process comprising a first reaction step for reacting phenol with acetone, a first concentration adjusting step, a first crystallization step for precipitating crystals of the adduct of bisphenol A with phenol, a first separation step for separating a solution containing the crystals of the adduct into the crystals and the mother liquor and a phenol removing step for removing phenol from the crystals of the adduct; and a sub-process comprising a second reaction step for reacting p-isopropenylphenol with phenol, a second concentration adjusting step, a second crystallization step, a second separation step for separating a solution containing the second any crystals of the adduct into the second any crystals and the second mother liquor and a cleaving step, the first mother liquor from the principal process being fed to the sub-process and the second any crystals of the adduct from the sub-process being fed to the principal process, is herein provided.In addition, a method for preparing high-purity bisphenol A which comprises a principal process comprising a first reaction/catalyst removing step for reacting phenol with acetone and removing the catalyst, a crystallization step for precipitating the adduct of bisphenol A with phenol, a solid-liquid separation step for separating the reaction solution into the crystals of the adduct and the mother liquor and a phenol removing step for removing phenol from the adduct crystals; and a sub-process comprising a second reaction/catalyst removing step for reacting p-isopropenylphenol with phenol and removing the catalyst, a second phenol removing step, a distillation step for separating bisphenol A and low boiling and high boiling substances and a cleaving step, the mother liquor from the principal process being fed to the sub-process and the distilled bisphenol A from the sub-process being fed to the principal process, is also herein provided.
摘要:
In a process for producing bisphenol A by reacting phenol and acetone in the presence of hydrochloric acid as a catalyst, the improvement comprising adding the water-containing phenol separated from the reaction product mixture in the purification stage to the reaction mixture containing phenol and acetone, in such an amount that the water content in the reaction mixture is within the range of 1 to 5 wt%, said water-containing phenol being obtained from the dehydrochlorination step of the reaction product mixture, condensing the distilled off gases and liquid-separating of the condensates.
摘要:
A process for obtaining high-purity bisphenol A by removing most part of phenol from an adduct of bisphenol A with phenol and removing continously the residual phenol by steam stripping, wherein a multi-tubular packed column is used as a stripping equipment. The residual phenol in bisphenol A can be removed constantly. In addition, the process of the present invention is economical because the residual phenol can be removed with a small amount of steam.
摘要:
This invention relates to a process for preparing 2,2-bis(4-hydroxyphenyl)propane, e.g. bisphenol A and particularly to a process for preparing high quality bisphenol A with good workability by distilling the intermediate adduct of bisphenol A and phenol.The adduct of bisphenol A and phenol is fed to a distillation column. Phenol is recovered from the top of the column and bisphenol A is obtained from its bottom. In this distillation process, the adduct of bisphenol A and phenol is added with a part of recycled bottom liquid. Consequently troubles such as plugging of the distillation column are prevented, continuous operation becomes possible for a long period of time and high quality bisphenol A can be steadily obtained.
摘要:
A semiconductor laser device has a high switching speed and low cost, and comprises a common electrode, on the surface of a P-type semiconductor wafer forming plural light sources. The semiconductor laser device is further featured by having grooves provided on said semiconductor wafer to allow independent drive of said light sources and to reduce the distance between the light-emitting points of the light sources.
摘要:
A collator has a common light-emitting element for emitting light to a photosensitive element for detecting an empty bin and to a photosensitive element for detecting a full bin; or a common photosensitive element for receiving light emitted from a light-emitting element for detection of an empty bin and from a light-emitting element for detection of a full bin. The collator allows correct detection of an empty bin and a full bin with fewer members and with simple construction. After detection of a full bin, some sheets already printed by a high-speed printer or the like can still be stacked in a space above the full bin level. Each bin also incorporates a bin inlet sensor to prevent erratic detection of a full bin or an empty bin when a sheet is in the process of being inserted in the bin through the inlet.
摘要:
A method in which, rearwardly of an array-like light source having a plurality of semiconductor lasers arranged in an array, a light detector for detecting the rearwardly emitted beams from the semiconductor lasers is provided and the peak value of each of the semiconductor lasers is detected by the light detector so that the peak values of the semiconductor lasers can be made equal to one another, whereby the quantity of light from each of the semiconductor lasers is regulated.
摘要:
There is disclosed an output device for displaying alphanumeric information as well as graphic pattern, which comprises a first dot signal generator for alphanumeric displaying, a second dot signal generator for graphic-pattern displaying and an output unit for deriving the first and second signals to display the alphanumeric and graphic pattern information.