Abstract:
Printed circuit boards, or PCBs, may include cross-linked oligomers that have been modified to prevent corrosion and have reduced flammability. The oligomers may be functionalized to include cross-linkable moieties and a flame retardant. The modified materials are more environmentally benign and less toxic than current fiberglass technologies used to manufacture PCBs.
Abstract:
An antifouling composition including a compound having a dioxaborinane moiety is provided. Methods of killing, or deterring the growth of, one or more organisms on an article include coating or impregnating the article with the antifouling composition, where the organisms live in fresh water or salt water.
Abstract:
A method of processing a material, the method including infiltrating a first disintegration fluid into a material at a first pressure, the first disintegration fluid including at least one supercritical noble gas, the first pressure being higher than a critical pressure of the first disintegration fluid, and disintegrating the material into particles by depressurizing the material from the first pressure to a second pressure, the second pressure being lower than the critical pressure of the first disintegration fluid.
Abstract:
Hydrophilic coating compositions and methods to make and use the compositions are disclosed. The compositions include a polymer comprising one or more cyanate groups and a blocking agent contacting at least one of one or more cyanate groups. When exposed to atmospheric water, the blocked cyanate moieties at the surface may hydrolyze to expose hydrophilic groups. Thus, the hydrophobic polymeric surface may change to a hydrophilic surface upon reacting with atmospheric water and moisture.
Abstract:
Disclosed herein are compositions and methods of making polythiourea and polythiourethane foams and coatings. In one embodiment, a method of preparing a polythiourea composition involves combining at least one polyamine compound, at least one polyisothiocyanate compound, and at least one catalyst to form a reaction mixture, and mixing the reaction mixture to form the polythiourea composition. In some embodiments, the polyamine compound may have an amine functionality of two or more, and is present in an amount of about 14 wt % to about 40 wt % of the reaction mixture. In some embodiments, the polyisothiocyanate compound may have a functionality of two or more, and is present in an amount of about 60 wt % to about 86 wt % of the reaction mixture. In some embodiments, the catalyst may be present in an amount of about 0 wt % to about 5 wt % of the reaction mixture.
Abstract:
Disclosed are polymers having one or more two-photon absorbing chromophores in a backbone of the polymers. The polymers degrade upon two-photon excitation, which allows for easy decomposition of polymeric products made therefrom. The decomposition can occur when the polymer is exposed to light of intensities sufficient to induce the two-photon excitation, which in turn cleaves the polymer at one or more sites where the chromophores are attached.
Abstract:
Functionalized microspheres for being dispersed in matrix materials to reduce the density and weight of the materials may be configured to include a covalently bound surface component which is configured to covalently bond with the matrix material so that when combined with the matrix material a strong, light-weight matrix material may be produced.
Abstract:
Ice phobic coatings and substrates and methods of making and using them are described. Some embodiments provide for an ice-phobic coating including a hydrophobic entity bonded to a hydrophilic moiety, wherein the hydrophilic moiety is capable of lowering a freezing point of water. Some embodiments provide for an ice-phobic article including a substrate having the ice-phobic coating applied on the substrate. In some embodiments, a method of making an ice-phobic coating may include bonding the hydrophobic entity with the hydrophilic moiety. In some embodiments, a method of making an ice-phobic article includes applying the ice-phobic coating to a substrate. Some embodiments also provide for a kit for making an ice-phobic article. Such ice-phobic coatings may be used to coat or impregnate winter equipment, cloth, shoes, sporting equipment, road signs, traffic lights, sidewalks, aircrafts, vehicles, or the like.
Abstract:
A cleaning system can include a noble gas, and one or more vessels configured to convert the noble gas into a supercritical fluid, and/or receive and clean an article of manufacture with the noble gas in the supercritical fluid state. A cleaning process can include converting a noble gas into a supercritical fluid state; and cleaning an article of manufacture with the noble gas in the supercritical fluid state so as to remove one or more contaminants from the article of manufacture. A cleaning composition can include a noble gas in a supercritical fluid state, and a textile article of manufacture having one or more contaminants located in the supercritical noble gas.