摘要:
Ozone resistant O2/N2 gas separation membranes comprise a polymer membrane and an ozone reacting component, such as an antioxidant. The antioxidant may be included in the support layer of a composite membrane or included in the entire structure of an asymmetric membrane. The antioxidants in the separation membrane reduce oxidation and deterioration of the actual separation layer of the membrane.
摘要翻译:耐臭氧O 2 / N 2气体分离膜包括聚合物膜和臭氧反应组分,例如抗氧化剂。 抗氧化剂可以包括在复合膜的支撑层中或包括在不对称膜的整个结构中。 分离膜中的抗氧化剂降低膜的实际分离层的氧化和劣化。
摘要:
A biological agent detector for detecting predetermined biological agents. The biological agent detector includes an optical fiber, a cladding that clads a length of the optical fiber and a bioindicator disposed within the cladding. The biological agent detector also includes a coherent light source that excites the optical fiber and a biological agent signature detector that detects the presence of a biological agent based upon a change in a resonance characteristic of the optical fiber caused by absorption of the predetermined biological agent into the cladding of the fiber.
摘要:
Vinylidene chloride can be substantially removed from a stream of CFC-141b over a carbon molecular sieve having a mean pore size of about 4.2 to 4.5 Angstroms.
摘要:
A method for the preparation of an ion exchange sorbent containing at least one anion exchange resin, a ferromagnetic substance, and a water permeable organic polymer binder, as well as a process for the use of said sorbent to separate removable anions from feed streams containing said anions.
摘要:
A biological agent detector for detecting predetermined biological agents. The biological agent detector includes an optical fiber, a cladding that clads a length of the optical fiber and a bioindicator disposed within the cladding. The biological agent detector also includes a coherent light source that excites the optical fiber and a biological agent signature detector that detects the presence of a biological agent based upon a change in a resonance characteristic of the optical fiber caused by absorption of the predetermined biological agent into the cladding of the fiber.
摘要:
A gas generating system comprises a catalytic reactor in fluid communication with a sulfur separator. The catalytic reactor oxidizes a fuel to provide a supply of carbon dioxide. The sulfur separator removes sulfur components from the stream before or after the fuel is oxidized. A portion of the hot exhaust gas from the catalytic reactor can be used to regenerate an adsorption bed of the sulfur separator.
摘要:
A photoelectrocatalytic sensor system for measuring oxidizable impurities in air. The sensor system may include a transistor having an electrode and a channel for the flow of current, a photocatalytic material coated onto the electrode of the transistor, a light source for producing an ultraviolet light beam onto the photocatalytic material, and a sensor for measuring the flow of current.
摘要:
The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of additives which decrease the formation of haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, catalyst, surfactant, and at least one additive wherein the additive is capable of decreasing the amount of decomposition of said dehydrohalocarbon blowing agent to haloalkenes during polymerization of the polyisocyanate and the polyol.Depending upon the polyol and polyisocyanate used and the quantity of polyisocyanate used, the compositions may be used in pour-in-place molded foams; rigid urethane spray foams; rigid high and low density foams for slabstock, froth foams, and molded foams; rigid laminated boardstock; or specialty foams.
摘要:
A porous polysulfone membrane and process for the preparation of porous polysulfone media suitable for use in filtration comprises blending polysulfone with a particulate solid or with said particulate solid and a second polymer, extruding the resultant blend to form an article and leaching the particulate solid and second polymer from the article.
摘要:
This invention relates to a photosensitizer which is bound to a cellulose acetate polymer, a method preparing the bound photosensitizer and a process for using the bound photosensitizer. The photosensitizers which may be used in the invention include rose bengal, rhodamine B, acridine orange, methylene blue and zinc phthalocyanine. The photosensitizer is attached to the cellulose acetate by reacting an acid group on the photosensitizer with a hydroxyl group. Finally, the bound photosensitizer may be used to oxidize undesirable oxidizable compounds present in a hydrocarbon or aqueous fraction. One specific example is the sweetening of the sweetening of kerosene which involves oxidizing the mercaptans contained in the kerosene.