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991 results about "Hexamethylenediamine" patented technology

Hexamethylenediamine is the organic compound with the formula H₂N(CH₂)₆NH₂. The molecule is a diamine, consisting of a hexamethylene hydrocarbon chain terminated with amine functional groups. The colorless solid (yellowish for some commercial samples) has a strong amine odor. About 1 billion kilograms are produced annually.

Semiaromatic polyamide molding compositions and their use

A polyamide molding composition with the following constitution is described:(A) from 30 to 100% by weight of at least one 10T / 6T copolyamide, where this is composed of(A1) from 40 to 95 mol % of 10T units, formed from the monomers 1,10-decanediamine and terephthalic acid(A2) from 5 to 60 mol % of 6T units, formed from the monomers 1,6-hexanediamine and terephthalic acid(B) from 0 to 70% by weight of reinforcing materials and / or fillers(C) from 0 to 50% by weight of additives and / or further polymerswhere the entirety of components A to C is 100%, with the proviso that in component (A) up to 30 mol %, based on the entirety of the dicarboxylic acids, of the terephthalic acid can have been replaced by other aromatic, aliphatic, or cycloaliphatic dicarboxylic acids, and with the proviso that in component (A) up to 30 mol % of 1,10-decanediamine and respectively 1,6-hexanediamine, based on the entirety of the diamines, can have been replaced by other diamines, and with the proviso that not more than 30 mol % in component (A), based on the entirety of the monomers, can have been formed via lactams or amino acids. Uses of this polyamide molding composition are moreover described, as also are processes for the preparation of these polyamide molding compositions.
Owner:EMS PATENT AG

Formaldehyde-Free Adhesives and Lignocellulosic Composites Made from the Adhesives

A first variant of an adhesive composition for making a lignocellulosic composite includes soy protein and / or lignin; at least one substantially formaldehyde-free curing agent that includes at least one amine, amide, imine, imide, or nitrogen-containing heterocyclic functional group that can react with at least one functional group of the soy protein; and at least one compound selected from a boron compound, a group IA oxide or hydroxide, or a group IIA oxide or hydroxide. A second variant of an adhesive composition includes a first component selected from soy protein and / or lignin; and at least one substantially formaldehyde-free curing agent selected from a reaction product of epichlorohydrin with ethylenediamine, a reaction product of epichlorohydrin with bis-hexamethylenetriamine, or a reaction product of epichlorohydrin with hexamethylenediamine.
Owner:THE STATE OF OREGON ACTING BY & THROUGH THE OREGON STATE BOARD OF HIGHER EDUCATION ON BEHALF OF OREGON STATE UNIV

Carbon nano-tube connecting carbon fiber multi-scale reinforcing body and method for producing the same

InactiveCN101173386ATake full advantage of mechanical propertiesRealize chemical bond connectionFibre treatmentArtificial filament chemical after-treatmentFiberCarbon fibers
The invention discloses a multi-scale reinforcement body that carbon nano-tube is connected with carbon fiber and a preparation method aiming at solving the drawbacks of increasing rigidity at the interface, lowering toughness of material and not improving performance of resin base between the fibers and between carbon fiber plywoods after prior carbon fiber treatment is made. The multi-scale reinforcement body of carbon nano-tube connecting carbon fiber is made through combining between a carbon nano-tube decorated by 1, 6 hexamethylenediamine and carbon fiber with acyl chloride functional group on the surface. The preparation method comprises: the carbon nano-tube decorated by 1, 6 hexamethylenediamine and the carbon fiber with acyl chloride functional group on the surface are prepared before put into N,N-dimethylformamide for reaction, thereby getting the multi-scale reinforcement body of carbon nano-tube connecting carbon fiber. The invention has the advantages of big activity on the surface, a plurality of chemical activated functional groups, strong reactive activity, good cohesiveness with the base, improving shearing intensity at the interface for composite material by 127.5% to 144.7% and improving toughness for the base by 34.43% to 48.67%.
Owner:HARBIN INST OF TECH

Composite having two or more layers, including an EVOH layer

The present invention provides a layered composite, which includes the following layers: (I) a layer I composition including: (a) from 0 to 80 part by weight of at least one polyamide selected from the group including PA6, PA66, PA6 / 66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer that includes the following monomer units: (α) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least one polyamine having at least 4 nitrogen atoms and having a number-average molar mass Mn of at least 146 g / mol, and (β) at least one polyamide-forming monomer selected from the group including lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and wherein, in the layer I, a total of the parts by weight of (a), (b) and (c) is 100; wherein within an entirety of (a) and (b), at least 20 parts by weight of the entirety include monomer units selected from the group including caprolactam, combination of hexamethylenediamine / adipic acid, and mixtures thereof; and wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety include monomer units selected from the group including ω-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine / 1,12-dodecanedioic acid, combination of 1,10-decanediamine / 1,12-dodecanedioic acid, combination of 1,12-dodecanediamine / 1,12-dodecanedioic acid, and mixtures thereof; and (II) a layer II composition which includes at least one ethylene-vinyl alcohol copolymer.
Owner:EVONIK OPERATIONS GMBH

Metallic bearing water-based detergent and rinsing agent used together with the same, and method for producing the same

The invention relates to metal bearing water-based cleaning agent, rinsing agent matched with the water-based cleaning agent, and the preparation method thereof. Petroleum sodium sulfonate, triethanol amine oleate, fatty alcohol-polyoxyethylene ether, emulgator, and cocoanut oil diethanolamine phosphoric acid ester are mixed with tiethanolamine and ethanolamine according to the weight percentage, are stirred uniformly at room temperature, then are mixed with other raw materials and water, then antibubbling agent AF9020 is added, and therefore the brown yellow and transparent concentrated cleaning agent is formed; nitrous acid dicyclohexylamine, oleic acid triethanolamine and petroleum sodium sulfonate are respectively dissolved into the mixed solvent of tiethanolamine and mono ethanolamine, then benzotriazole is dissolved into water to mix the two solvent, to form the brown yellow and transparent concentrated rinsing agent; the cleaning agent and the rinsing agent are mixed into 5 percent treatment fluid and 1 percent of treatment fluid, then the treatment fluid is cleaned for 30 seconds to 1 minute under ultrasonic wave, rinsed for 30 seconds, and then hot air seasoning, drying and 48 h rust preventing are performed. The invention can replace gasoline cleaning agent, kerosene cleaning agent, and universal water-based cleaning agent, the used raw material is easy to be acquired, the production cost is low, and the invention without parkerizing process can effectively prevent the environmental pollution.
Owner:白马轴承技术(洛阳)有限公司
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