摘要:
An activator composition for accelerating hardening and achieving cure-through-volume of cyanoacrylate adhesives) comprising; (a) one or more compounds selected from the group consisting of :(i) pyrazine; or a pyrazine derivative; said pyrazine derivative being pyrazine substituted with at least one electron-releasing group; (ii) pyridine N oxides substituted with at least one electron-releasing group; or (iii) 2,6 pyridines being pyridines substituted in the 2- and 6-positions by substituents, at least one of the substituents being electron-releasing provided that both substituents are not methyl; and (b) a volatile solvent carrier for the compound.
摘要:
A method of forming a gasket in situ between two components which includes injecting into a groove in at least one of said components a curable composition including:one or more free-radical polymerizable vinyl esters, and ingredients of a rapid free-radical cure system therefor,the cure system being inactivated prior to injection of the composition,and the composition having a viscosity at 25.degree. C. in the range from 200 to 500,000 mPas;and permitting the composition to cure.The composition can be a two part composition wherein the first part contains a prepolymer, monomer and activator and the second part a prepolymer, monomer and activator. The composition can also include two expansion reactants, each in a separate part of the composition prior to injection, which react to form a gas in situ in the composition. The gasketing composition is suitable for use in engines and other machines e.g. in industrial manufacturing plants.
摘要:
In accordance with an aspect of the present invention, a system may be used with a first database, a second database and a global positioning system, wherein the first database has advertising content data and advertising correlation data stored therein, wherein the second database has identifying data and correlation data stored therein and wherein the global positioning system is operable to provide a position signal corresponding to a position of the system and the velocity of the system. The system includes a sensor portion, a processor portion and a display portion. The sensor portion is operable to detect a parameter and to generate a detected signal based on the detected parameter. The processor portion is operable to generate a correlation between the detected signal and a portion of the identifying data, to obtain a portion of the advertising content data based on a portion of the correlation data and the advertising correlation data, and to generate a display signal based on the advertising content data and the position signal. The display portion is operable to display data based on the display signal.
摘要:
In accordance with an aspect of the present invention, a system may be used with a first database, a second database and a global positioning system, wherein the first database has advertising content data and advertising correlation data stored therein, wherein the second database has identifying data and correlation data stored therein and wherein the global positioning system is operable to provide a position signal corresponding to a position of the system and the velocity of the system. The system includes a sensor portion, a processor portion and a display portion. The sensor portion is operable to detect a parameter and to generate a detected signal based on the detected parameter. The processor portion is operable to generate a correlation between the detected signal and a portion of the identifying data, to obtain a portion of the advertising content data based on a portion of the correlation data and the advertising correlation data, and to generate a display signal based on the advertising content data and the position signal. The display portion is operable to display data based on the display signal.
摘要:
An activator composition for accelerating hardening and achieving cure-through-volume of cyanoacrylate adhesives) comprising; (a) one or more compounds selected from the group consisting of :(i) pyrazine; or a pyrazine derivative; said pyrazine derivative being pyrazine substituted with at least one electron-releasing group; (ii) pyridine N oxides substituted with at least one electron-releasing group; or (iii) 2,6 pyridines being pyridines substituted in the 2- and 6-positions by substituents, at least one of the substituents being electron-releasing provided that both substituents are not methyl; and (b) a volatile solvent carrier for the compound.