8 results about "Halide" patented technology

A method for growing a crystal of an Al-containing III-V group compound semiconductor by the conventional HVPE method, characterized in that it comprises a step of reacting Al with hydrogen halide at a temperature of 700° C. or lower to form a halide of Al. The method has allowed the suppression of the formation of aluminum chloride (AlCl) or aluminum bromide (AlBr) reacting violently with quartz, which is the material of a reaction vessel for the growth, resulting in the achievement of the vapor phase growth of an Al-containing III-V group compound semiconductor at a rate of 100 microns/hr or more, which has lead to the mass-production of a substrate and a semiconductor element having satisfactory resistance to adverse environment.

An object of the invention is to provide a preparation process of a latent catalyst that can gives a latent catalyst, which can exert an excellent catalytic activity at the time of molding and therefore, can provide a resin composition having good curing property, fluidity and storage stability, in a short time in a high yield without mixing in ionic impurities. The present invention relates to a preparation process of a phosphonium silicate latent catalyst, comprising reacting (A) a proton donor represented by the following formula (1):

[Chemical Formula 1]

HY¹-Z¹-Y²H  (1)

[wherein Y¹ and Y² may be the same or different and each represents a group resulting from a proton donating substituent through release of a proton, Z¹ represents a substituted or unsubstituted organic group which bonds to the proton donating substituents Y¹H and Y²H, and two substituents Y¹ and Y² in the same molecule are capable of bonding to a silicon atom to form a chelate structure], (B) a trialkoxysilane compound and (D) a phosphonium salt compound represented by the following formula (2):

[wherein R¹, R², R³ and R⁴ may be the same or different and each represents an organic group having a substituted or unsubstituted, aromatic or heterocyclic ring or represents a substituted or unsubstituted aliphatic group and X⁻ represents a halide ion, a hydroxide ion or an anion resulting from a proton donating group through release of a proton], wherein the reaction is carried out in the presence of (C) a metal alkoxide compound.

The invention provides a sterilization corrosion inhibitor for oil field water treatment system as well as a preparation method and application thereof. The sterilization corrosion inhibitor is prepared from 5wt%to 60wt% of dodecyl dimethyl benzyl ammonium halide, 0.5 wt% to 5wt% of sterilization synergist, 10wt% to 30wt% of surfactant, 3wt% to 10wt% of buffer and the balance of water. The sterilization corrosion inhibitor has high sterilization efficiency, has high bactericidal effects on sulfate reducing bacteria (SRB) and total general bacteria (TGB), has long drug effect duration, is hardto produce drug resistance, simple in production process and low in cost, and has a good corrosion inhibition effect on CO2 corrosion.

The invention discloses a recovery method of an alkyl-halide fire extinguishing agent in a fire extinguishing bottle for aviation, which belongs to the technical range of recovery of fire extinguishing agents. The recovery method comprises the following steps of: firstly, establishing a fire extinguishing agent recovery system which enables a fire extinguishing agent to be liquefied by reducing the temperature and increasing the pressure simultaneously; setting the temperature of a refrigeration house to be -40 DEG C and the volume of a pressure storage tank to be 35L according to practical needs; placing the pressure storage tank in the small refrigeration house or refrigerator, placing the fire extinguishing bottle outside the small refrigeration house or refrigerator; connecting the pressure storage tank to the fire extinguishing bottle and the fire extinguishing agent storage tank respectively; opening an inlet shutoff valve to release the fire extinguishing agent in the fire extinguishing bottle to the pressure storage tank, wherein the pressure storage tank is higher than the fire extinguishing agent storage tank, and the liquid fire extinguishing agent in the pressure storage tank flows towards the fire extinguishing agent storage tank under the action of gravity; and automatically recovering according to specific pressure. The recovery method diclosed by the invention has the advantages that the fire extinguishing agent discharged into the atmosphere is obviously reduced, so that the environment is protected, and the purposes of reducing the waste of the fire extinguishing agent and improving the recovery efficiency of the fire extinguishing agent are fulfilled.

A process for making esters with bioresistant, fungal resistant and antimicrobial/antifungal properties with reduced color and improved yield. A fatty acid halide, preferably a chloride, or a fatty acid anhydride is reacted with bromo-nitro-propandiol (BNPD) to form an almost clear ester that can be used in commercial applications like metal working fluids where it is desired to prevent degradation by bio-organisms.

The invention discloses a low-dimensional rare earth boride nano material and a solid phase preparation method thereof. The preparation method comprises the following steps: S1, catalyst film synthesis: a catalyst is deposited on a substrate; and S2, solid phase source thermal evaporation deposition: under protection of a carrier gas, a boron source, an anhydrous rare earth halide and the substrate are placed at a growth temperature of 700-1200 DEG C and a growth gas pressure of 0.1-100 kPa for evaporation and growth for 0.5-4 h, and the low-dimensional rare earth boride nano material is obtained on the substrate. Controllable preparation of large area, high density, and single crystal rare earth boride nanostructures can be achieved on various substrates by using different catalysts.