Abstract:
The invention relates to methods, systems and compositions for surface treatments of substrate surfaces. Specifically, embodiments provided herein are for methods and compositions for imparting hydrophobicity to substrate surfaces. The embodiments provided herein are for methods of imparting hydrophobicity to substrate surfaces comprising the steps of hydrolyzing a solution comprising a titanium precursor to obtain a titania sol, diluting the titania sol solution, treating the substrate surface with the at least one dilution of the titania sol, and drying the treated substrate surface. Further, surface treatment compositions comprising titania sol solutions are provided herein.
Abstract:
An antimicrobial composition comprising an organic antimicrobial component (K) and at least one metal salt component (M) and also, where appropriate, a solvent (L) and further auxiliary components, which comprises as organic component (K) at least one compound of the general formula (I) where the radicals independently have for example the following meanings: R1 is a branched or unbranched alkyl radical having 1 to 12 carbon atoms, R2 is a branched or unbranched alkyl radical having 1 to 12 carbon atoms, R3 is a branched or unbranched alkyl radical having 1 to 12 carbon atoms, R4 is a branched or unbranched alkyl radical having 1 to 18 carbon atoms, R5 is a branched or unbranched alkyl radical having 1 to 18 carbon atoms, R6 is a branched or unbranched alkyl radical having 8 to 18 carbon atoms; n is an integer from 1 to 6, and which comprises as metal salt component (M) at least one salt of a di- to pentavalent metal, is useful for durable finishing of textiles.
Abstract:
The present invention relates to a process for the metal coating of nano-fibers by electrospinning, to the metal coated nano-fibers obtained by this process and to the use of said metal coated nano-fibers. The process is characterized in that a polymer nano-fiber with functional groups providing the binding ability to a reducing reagent is prepared by electrospinning at ambient conditions. Then this is contacted with a reducing agent, thereby opening the epoxy ring on the surface of polymer nano-fiber and replacing with the reducing agent and the reducing agent modified film is reacted with metal solution in alkaline media. Finally the electrospun mat is treated with water to open the epoxy rings in the structure and crosslinking the chains to provide integrity.
Abstract:
A process for rendering natural and synthetic materials and blends of the same flame retardant which entails treating the same with an aqueous dispersion of the flame retardant agent reduced to a finely divided state suspended in a latex medium and applied to the material with a finely divided metal oxide as synergist, by any convenient means; dried and set in place by baking. The active flame retardant agents are chlorinated cyclopentadieno compounds, chlorobrominated cyclopentadieno compounds, applied alone or in admixture with each other, or in admixture with brominated cyclopentadieno compounds, and in admixture with metallic oxides. The active flame retardant agents are reduced to a fine state of subdivision, preferably under 2 microns average particle diameter.
Abstract:
Bonded fibrous nonwoven textile fabrics having excellent strength and textile-like softness, drape and hand which are intermittently bonded with synthetic resins in predetermined print patterns of binder areas having a relatively high, uniform concentration of from about 50 to about 120 percent by weight of resin binder in the binder areas, based on the weight of the fibers therein, said binder areas having very sharply defined borders or edges with a minimum of binder feathering thereat whereby the optical density of the bonded fibrous nonwoven textile fabric very sharply increases from substantially zero to a maximum of at least from about 0.6 to about 1.0 or greater in a distance of less than about 1 mm. (0.04 inch), and methods of depositing such synthetic resins from colloidal aqueous dispersions thereof onto wet fibrous webs to form the bonded fibrous nonwoven textile fabrics, comprising the use of (1) metal complex coordination compounds and (2) synthetic resins and/or surfactants, at least one of which contains a specific coordinating ligand capable of being affected by ions of said metals to control the total migration of the resin binder during such deposition.
Abstract:
A multilayer web or article of insulating material which essentially includes at least one flame-resistant layer having polyacyloxalamidrazone fibers bearing at least one metal, preferably zinc, tin or calcium, in chemically combined form. These articles or materials are especially suitable in the manufacture of rescue suits, protective clothing and protective linings.
Abstract:
AN IMPROVED PROCESS IS PROVIDED FOR THE FORMATION OF FIBROUS MATERIALS OF ENHANCED THERMAL STABILITY DERIVED FROM ACRYLIC POLYMERS CONSISTING PRIMARILY OF RECURRING ACRYLONITRILE UNITS. A MINOR QUANTITY OF A LEWIS ACID CAPABLE OF PROMOTING THE CYCLIZATION OF PENDANT NITRILE GROUPS IS INCORPORATED IN A SOLUTION OF THE ACRYLIC POLYMER, A CYCLIZED ACRYLIC MATERIAL IS FORMED WITHIN THE SOLUTION AT AN ELEVATED TEMPERATURE, THE RESULTING SOLUTION IS SPUN TO FORM A CYCLIZED ACRYLIC FIBROUS MATERIAL WHICH IS SOLUBLE IN,N-DIMETHYLFORMAMIDE, AND THE RESULTING CYCLIZED ACRYLIC FIBROUS MATERIAL IS HEATED IN AN OXYGENCONTAINING ATMOSPHERE UNTIL A STABILIZED FIBROUS PRODUCT IS FORMED WHICH IS CAPABLE OF UNDERGOING CARBONIZATION AND WHICH IS INSOLUBLE IN N,N-DIMETHYLFORMAMIDE. THE STABILIZED FIBROUS MATERIAL MAY NEXT OPTIONALLY BE CARBONIZED OR CARBONIZED AND GRAPHITIZED AT ELEVATED TEMPERATURES WHILE PRESENT IN AN INERT ATMOSPHERE.
Abstract:
AN IMPROVED PROCESS IS PROVIDED FOR THE FORMATION OF FIBROUS MATERIALS OF ENHANCHED THERMAL STABILITY DERIVED FROM ACYRLIC POLYMERS CONSISTING PRIMARILY OF RECURRING ACRYLONITRILE UNITS. A MINOR QUANTITLY OF A LEWIS ACID CAPABLE OF PROMOTING THE CCLIZATION OF PENDANT NITRILE GROUPS IS INCORPORATED IN A SOLUTION OF THE ACRYLIC POLYMER AND A CYCLIZED ACRYLIC MATERIAL IS FORMED THEREIN WHICH IS SUBSEQUENTLY SPUN INTO A FIBER WHICH EXHIBITS NO APPRECIABLE EXOTHERMIC REACTION WHEN HEATED TO 500* C. UPON SUBJECTING THE RESULTING FIBER TO RELATIVELY MILD PREOXIDATION CONDITIONS A STABILIZED FIBROUS MATERIAL MAY BE FORMED WHICH OPTIONALLY MAY BE CARBONIZED OR CARBONIZED AND GRAPHITIZED AT ELEVATED TEMPERATURES WHILE PRESENT IN AN INERT ATMOSPHERE.