摘要:
A method of precipitating colloidal materials from aqueous systems and a dynamic bimetallic galvanic cell is disclosed, said cell including a metallic electrode which provides a source of flocculating agent and an inert electrode to which the metallic electrode is short circuited. When water containing colloidal particles is passed through the galvanic cell and the electrodes are short circuited, the metallic electrode provides a source of flocculating agent which coprecipitates with the colloidal particles, forming a sediment which can be readily removed. The cell is constructed to maximize the contact between the water and the electrode surfaces and to maintain the metallic electrode short circuited against the inert electrode as the metallic electrode is consumed.
摘要:
Galvanic cells employing compressible gaskets having at least a portion of the sealing areas of such gaskets coated with plasma deposited fluorine atoms demonstrate increased resistance to electrolyte leakage.
摘要:
A medicament dispenser comprising a canister and a drug dispensing valve, wherein one or more surfaces of said canister and/or valve has a fluorinated coating provided by a process comprising generating one or more fluorine-containing radical species and polymerising said radicals on said one or more surfaces, provided that the radicals are not generated by a process involving continuous wave radio frequency plasma polymerisation is disclosed.
摘要:
A dispenser for dispensing a medicament that includes a canister for housing the medicament and a fluid propellant therefor and a drug-dispensing valve wherein one or more of the internal surfaces of the canister and/or valve includes a fluorinated coating prepared from plasma polymerisation of one or more fluorinated monomers selected from the group consisting of CH2FCF3 and C3F6 is disclosed.
摘要翻译:一种用于分配药物的分配器,其包括用于容纳药物的罐和用于其的流体推进剂和药物分配阀,其中罐和/或阀的一个或多个内表面包括由等离子体聚合制成的氟化涂层 或更多的氟化单体,其选自CH 2 COF 3 3 F 3和C 3 F 6 C 6。
摘要:
This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of metals. The plasma process involves pretreatment of the surface of the metal with a gas plasma to remove oxygen, followed by plasma deposition of a thin polymeric film on the treated surface, followed by cathodic electrocoat application of a primer.
摘要:
A semipermeable composite membrane is prepared by glow discharge polymerization of a combination of an organic monomer and an inorganic monomer in the presence of a porous support, the polymerization resulting in deposition of a thin film of copolymer on the surface of the support.
摘要:
A process of organic vapor deposition for significantly improved corrosion protection of metal. The process involves deposition of a thin film by polymerization of certain precursors onto the surface of a metal phosphate treated metal substrate (15). A primer or topcoat is subseqently applied over the metal substrate.
摘要:
This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of steel. The plasma process involves pretreating of the steel surfaces by oxygen plasma and thin film deposition by polymerization of certain precursors on the steel. The process utilizes DC power, substrates as the cathode, magentron anodes, and system pressures of 0.01-0.5 torr. After the thin film plasma deposition it is also preferably to put a primer coating over the thin film.
摘要:
Galvanic cells having at least a portion of their sealing surfaces and/or corrodible members coated with a sputtered or plasma polymerization deposited layer of polymeric material no more than 2000 angstroms thick demonstrate increased resistance to electrolyte leakage and/or increased resistance to corrosion.
摘要:
A soft corneal contact lens comprising a soft, highly oxygen-permeable, polymeric lens having formed on the surface thereof an ultrathin, optically clear, impermeable barrier coating. The barrier coating is tightly cross-linked and comprises the reaction product resulting from an electrical glow discharge polymerization process conducted in a gaseous atmosphere and will prevent diffusion into the lens of lipids and other large molecules from the eye's tear film. The lens is formed from silicone or polyurethane. The gaseous atmosphere consists essentially of compounds selected from the group consisting of hydrocarbons; halogenated hydrocarbons; halogenated hydrocarbons and hydrogen; hydrocarbons and a halogen; and a mixture of any two or more of these compounds. The surface of the fully formed lens is highly hydrophilic which is accomplished during the polymerization process or in an additional step comprising glow discharge in the presence of oxygen or argon.