Patent application number | Description | Published |
20150343352 | SULFUR SCAVENGING MATERIALS FOR FILTERS AND COATINGS - Materials which react with (“scavenge”) sulfur compounds, such as hydrogen sulfide and mercaptans, are used to limit sulfur-induced corrosion. Filters and protective coatings including these materials, described broadly as polyhexahydrotriazines (PHT) and polyhemiaminals (PHA), are disclosed. Methods of using these materials to prevent corrosion are described. PHT and PHA materials have excellent thermal and mechanical properties for many applications as coatings and filtration media. Specifically, PHT and PHA materials react with sulfur compounds in such a manner as to incorporate sulfur atoms into the polymeric matrix, thus sequestering the sulfur atoms and allowing removal from fluids such as crude oil, natural gas, hydrocarbon combustion exhaust gases, sulfur polluted air and water. A coating PHT or PHA material on a component to be protected similarly reacts with sulfur compounds prior to sulfur being able to penetrate to the component. | 12-03-2015 |
20150343421 | SULFUR SCAVENGING MATERIALS - Materials which react with (“scavenge”) sulfur compounds, such as hydrogen sulfide and mercaptans, are useful for limiting sulfur-induced corrosion. Surface-modified particles incorporating a hexahydrotriazine moiety are disclosed and used as sulfur scavengers. These surface-modified particles are used a filter media in fixed filter systems and as additives to fluids including sulfur compounds. The hexahydrotriazine moiety can react with sulfur compounds in such a manner as to bind sulfur atoms to the surface-modified particles, thus allowing removal of the sulfur atoms from fluids such as crude oil, natural gas, hydrocarbon combustion exhaust gases, sulfur polluted air and water. The surface-modified particles may, in general, be sized to allow separation of the particles from the process fluid by sedimentation, size-exclusion filtration or the like. | 12-03-2015 |
20150344628 | PREPARATION OF THIOETHER POLYMERS - Polythioethers and methods for forming polythioethers are disclosed herein. The polythioethers are prepared from thiols and hexahydrotriazines. The thiols may be, for example, dithiols, trithiols, monothiols, or mixtures thereof. The polythioethers are prepared from an efficient and simple synthetic method, and the properties of the prepared polythioethers can be readily tuned. The prepared polythioethers may additionally have improved thermal properties, improved mechanical properties, and enhanced functionality. | 12-03-2015 |
20150344629 | PREPARATION OF THIOETHER POLYMERS - Polythioethers and methods for forming polythioethers are disclosed herein. The polythioethers are prepared from thiols and hexahydrotriazines. The thiols may be, for example, dithiols, trithiols, monothiols, or mixtures thereof. The polythioethers are prepared from an efficient and simple synthetic method, and the properties of the prepared polythioethers can be readily tuned. The prepared polythioethers may additionally have improved thermal properties, improved mechanical properties, and enhanced functionality. | 12-03-2015 |
20150344633 | PREPARATION OF FUNCTIONAL POLYSULFONES - Polysulfones and methods for forming polysulfones are disclosed herein. The polysulfones are prepared from thiols and hexahydrotriazines. The thiols may be, for example, dithiols, trithiols, monothiols, or mixtures thereof. The thiols and hexahydrotriazines may be polymerized to form a polythioether. The polythioether may thereafter be oxidized to form a polysulfone. The polysulfones are prepared from an efficient and simple synthetic method, and the properties of the prepared polysulfones can be readily tuned. The prepared polysulfones may have improved thermal properties, improved mechanical properties, and enhanced functionality. | 12-03-2015 |
20150353584 | SULFUR SCAVENGING MATERIALS - Materials which react with (“scavenge”) sulfur compounds, such as hydrogen sulfide and mercaptans, are useful for limiting sulfur-induced corrosion. Surface-modified particles incorporating a hexahydrotriazine moiety are disclosed and used as sulfur scavengers. These surface-modified particles are used a filter media in fixed filter systems and as additives to fluids including sulfur compounds. The hexahydrotriazine moiety can react with sulfur compounds in such a manner as to bind sulfur atoms to the surface-modified particles, thus allowing removal of the sulfur atoms from fluids such as crude oil, natural gas, hydrocarbon combustion exhaust gases, sulfur polluted air and water. The surface-modified particles may, in general, be sized to allow separation of the particles from the process fluid by sedimentation, size-exclusion filtration or the like. | 12-10-2015 |
20150355090 | METHODS AND APPARATUS FOR DETECTING METALS IN LIQUIDS - Method for detecting metals in a liquid are described. The liquid is contacted with a hexahydrotriazine and/or a hemiaminal material, and a UV absorption spectrum of the material before and after exposure to the liquid is examined to determine whether metals are present in the liquid. | 12-10-2015 |
20150355156 | METHODS AND APPARATUS FOR DETECTING METALS IN LIQUIDS - Method and apparatus for detecting metals in a liquid are described. The liquid is contacted with a hexahydrotriazine and/or a hemiaminal material, and a UV absorption spectrum of the material before and after exposure to the liquid is examined to determine whether metals are present in the liquid. | 12-10-2015 |