36 results about "Ozone depletion" patented technology

A method and apparatus for performing a laser treatment of a patient includes applying a positive pressure impulse on a predetermined target site on the patient with sufficient positive pressure arising from the momentum flux of sprayed material incident on the target site to momentarily lessen pain sensation during irradiation during or proximate in time to irradiation of the target site. The predetermined target site is cooled by applying a predetermined amount of coolant or cryogen onto the target site. The target site is radiated with energy to produce heat in tissue at the target site while leaving a superficial part of the target site substantially undamaged due to dynamic cooling of the superficial part of the target site by the coolant. Mediation of the pain sensation arising from the radiation is at least partially masked or lessened by the positive pressure impulse and / or by the temperature of the coolant.

The present invention is directed to using cryogenic compositions, which are non-toxic, non-flammable, and have desirable ozone depletion and global warming potential, for cooling heated skin during skin treatments with a skin treatment apparatus.

The present invention is directed towards a method of stabilizing thermosetting foam blends such as polyurethane poly blends containing a blowing agent with negligible (low or zero) ozone-depletion and low GWP based upon unsaturated halogenated hydroolefins in which one or more ester is added to the thermosetting foam blends. The thermosetting foam blends typically in clued: polyol(s); surfactant(s); catalyst(s); flame retardent(s); organic acid inhibitor(s) / stabilizer(s); carbon dioxide generating agent(s). The addition of the one or more esters to the thermosetting foam blends was unexpectedly found to result in blends which were stable over time and the resulted foams have a uniform cell structure with little or no foam collapse.

The invention provides an environment-friendly cleaning agent for an electronic industry. The environment-friendly cleaning agent is composed of the following components by weight: 45-70% of 2-methyl pentane, 15-25% of absolute ethyl alcohol, 5-10% of isopropanol and 10-20% of ether solvent. A primary solvent of the environment-friendly cleaning agent for the electronic industry is the 2-methyl pentane; a toxic property of the 2-methyl pentane on human bodies is one twentieth of normal hexane; the 2-methyl pentane has specially good dissolving capacity on rosin in scaling powder; the ether solvent has good dissolving capacity on polar materials such as organic acid in the scaling powder; and the absolute ethyl alcohol has good greasy dirt removing functions. The environment-friendly cleaning agent for the electronic industry does not contain halohydrocarbon such as the normal hexane and trichloroethylene, and has no environmental effect caused by ozone depletion. The environment-friendly cleaning agent for the electronic industry is basically nonhazardous to human bodies.

The invention relates to an environment-friendly hydrocarbon cleaning agent, which belongs to the field of industrial cleaning agent. The environment-friendly hydrocarbon cleaning agent comprises the following components in percentage by weight: 40 to 80 percent of C12H26, 10 to 30 percent of C3H3F5, and 10 to 30 percent of C2H5OH. The environment-friendly hydrocarbon cleaning agent has high cleaning capacity and can volatilize completely without leaving any residue, and the ozone depletion coefficient of the environment-friendly hydrocarbon cleaning agent is 0.00. The environment-friendly hydrocarbon cleaning agent is safe for the environment and human body and is an optimal substitute for ozone depleting substance (ODS) cleaning agent.

Polymer extruded foams that contain cell size enlarging agents are provided. The inventive composition includes a foamable polymer material, at least one blowing agent, and at least one cell size enlarging agent. The blowing agent utilized in the inventive composition is preferably selected such that the composition has a zero ozone depletion and low global warming potential. Examples include any inorganic blowing agents and / or non-hydrogenated chlorofluorocarbons (non-HCFCs). The foamable polymer material is preferably polystyrene. The cell size enlarging agent may be chosen from ethylene vinyl acetate (EVA) and / or ethylene methyl acrylate (EMA). The cell size enlarging agent permits the formation of a foam with large cell sizes that are desirable to achieve a high insulation value and to optimize the physical properties of the foamed product. In addition, the cell size enlarging agent provides an increased cell size to the foamed product without detracting from the physical and thermal properties.

The invention discloses a system for optimizing ozone operation during a coking gas desulfurization and denitrification process, which comprises a working condition judgment system, a timing module, a process model module, and a decoupling and control module, wherein the working condition judgment system is used for determining the current production working condition according to real-time data during the desulfurization and denitrification process; the timing module is used for determining a commutation period according to the determined current production working condition; the process model module is used for determining a process model according to the determined current production working condition; and the decoupling and control module is used for carrying out decoupling and control on the denitrification process according to the commutation period and the process model, and thus, the ozone output amount during the denitrification process is fit to nitrogen oxide concentration changes in the gas, and the nitrogen oxide output concentration is ensured to be only influenced by the ozone output amount. The invention also discloses a method of optimizing the ozone operation during the coking gas desulfurization and denitrification process. Control on the denitrification process can be realized, the denitrification process is ensured to be strictly below the environmental protection requirements, and the ozone use amount and the operation cost are reduced maximally.