12236 results about "Diamine" patented technology

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 polymers

where 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in component (A) up to 30 mol %, based on the entirety of the dicarboxylic acids, of the terephthalic acid can have been replaced by other aromatic, aliphatic, or cycloaliphatic dicarboxylic acids, and with the proviso that in component (A) up to 30 mol % of 1,10-decanediamine and respectively 1,6-hexanediamine, based on the entirety of the diamines, can have been replaced by other diamines, and with the proviso that not more than 30 mol % in component (A), based on the entirety of the monomers, can have been formed via lactams or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.

The invention belongs to the technical field of preparation of a carbon nano material, and particularly relates to a method for preparing a carbon dot having a high fluorescent quantum yield from citric acid and different nitrogen-containing molecules. The method comprises the following steps: weighing 1-10 mmol of solid citric acid, and dissolving in 10 ml of deionized water; weighing 1-10 mmol of ethylenediamine, ethylamine, propylamine, butanediamine, n-hexylamine, p-phenylene diamine or urea, adding into the citric acid solution, and uniformly stirring; transferring the solution into a hydrothermal or high-pressure microwave reaction kettle, reacting under hydrothermal or microwave conditions, and naturally cooling the reaction kettle to room temperature, thus obtaining a yellow or brown carbon dot water solution; and finally, purifying the carbon dot water solution, evaporating, and drying to obtain pure carbon dot solid powder. The carbon dot solution can send out bright blue fluorescence under the irradiation of a handheld ultraviolet lamp. The invention has wide application prospects in the fields of biological imaging, fluorescent printing and the like.

The present invention provides a water-soluble crosslinkable polyurea prepolymer. The crosslinkable polyurea prepolymer of the invention is prepared by reacting an amine- or isocyanate-capped polyurea with a multifunctional compound having at least one one ethylenically unsaturated group and a function group coreactive with the capping amine or isocyanate groups of the amine- or isocyanate-capped polyurea. The amine- or isocyanate-capped polyurea is a copolymerization production of: (a) at least one poly(oxyalkylene)diamine, (b) optionally at least one organic di- or poly-amine, (c) optionally at least one diisocyanate, and (d) at least one polyisocyanate. The crosslinkable polyurea prepolymer of the invention can find use in economically producing contact lenses which have durable, highly elastic soft contact lenses with desired physical properties. In addition, the present invention provides method for making a medical device, preferably an ophthalmic device, more preferably a contact lens.

The present invention relates to preparation process of adhesive-free ZSM type molecular sieve, and aims at solving the problem of adding adhesive causing decrease in effective surface area and limited diffusion. Technologically, the present invention is that adhesive silica in 5-50 wt% and ZSM type molecular sieve powder are made to form mixture, and the mixture is hydrothermally converted inside water solution or steam containing organic amine halide and alkyl diamine into integrated ZSM type molecular sieve. The process of the present invention may be used in the industrial preparation of ZSM type molecular sieve catalyst.

A powder which is capable of being used in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted and, after cooling, are fixed, contains a mixture of diacid-regulated polyamide and diamine-regulated polyamide and/or diacid-regulated copolyamide and diamine-regulated copolyamide.

The invention relates to a colorless and transparent polyimide nano-composite material membrane and a preparation method thereof. The polyimide nano-composite material membrane is prepared by a method of compounding alicyclic dianhydride and fluorinated diamine serving as monomers with a certain amount of inorganic nano-particles by using nano-composite technology and performing thermal imidization with gradient temperature increase. The amount of added nano-particles is controlled between 0.01 and 5.00 weight percent to obtain the colorless and transparent polyimide nano-composite material membrane with high heat resistance. The membrane has a glass transition temperature of over 250 DEG C, a light transmittance of over 90 percent at 450 nanometers and an ultraviolet wavelength of about 300 nanometers, and can be used as a substrate material for a photoelectric device, a semiconductor material, an optical waveguide material and the like.

Absorbable polyurethanes, polyamides and polyester urethanes prepared from at least one compound selected from:

or the diamines and diisocyanates thereof, wherein each X represents a member independently selected from —CH₂COO— (glycolic acid moiety), —CH(CH₃)COO— (lactic acid moiety), —CH₂CH₂OCH₂COO— (dioxanone), —CH₂CH₂CH₂CH₂CH₂COO— (caprolactone moiety), —(CH₂)_yCOO— where y is one of the numbers 2, 3, 4 or 6-24 inclusive, and —(CH₂CH₂O)_z′CH₂COO— where z′ is an integer between 2 and 24, inclusive; each Y represents a member independently selected from —COCH₂O— (glycolic ester moiety), —COCH(CH₃)O— (lactic ester moiety), —COCH₂OCH₂CH₂O— (dioxanone ester), —COCH₂CH₂CH₂CH₂CH₂O— (caprolactone ester), —CO(CH₂)_mO— where m is an integer between 2, 3, 4 or 6-24 inclusive, —COCH₂O(CH₂CH₂O)_n— where n is an integer between 2 and 24, inclusive; R′ is hydrogen, benzyl or an alkyl group, the alkyl group being either straight-chained or branched; p is an integer between 1 and 4, inclusive; and Rn represents one or more members selected from H, alkoxy, benzyloxy, aldehyde, halogen, carboxylic acid and —NO₂, which is attached directly to an aromatic ring or attached through an aliphatic chain. Absorbable polymers prepared from these compounds are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention and other implantable medical devices.

Bioabsorbable compounds which include a polyalkylene oxide backbone with two or more isocyanate substituents are useful as one component adhesives. Absorbable compositions useful as a two component adhesive contain a) a polyethylene oxide having two or more amine substituents with b) a bioabsorbable diisocyanate compound, or alternatively contain a) a polyethylene oxide having two or more isocyanate substituents with b) a bioabsorbable diamine compound, or, alternatively contain a) a bioabsorbable diisocyanate compound and b) a bioabsorbable diamine compound.

An organic semiconductive material comprising at least one matrix material and at least one doping material, wherein the doping material is selected from an organic compound and wherein the matrix material is selected from an diamine compound, also an organic component and a mixture for producing a doped semiconductor layer.

The present invention relates to diaryl pyrimidine-2,4-diamines, pharmaceutical compositions thereof, and the use of the compounds and compositions for the inhibition of kinases. The compounds, analogs, and pharmaceutically acceptable salts thereof, and pharmaceutical compositions can be used in the treatment and prevention of cancer.

The instant invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(disubstituted ethylene-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(disubstituted ethylene-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(disubstituted ethylene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The instant invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.

Activated polymeric bicine derivatives such as

as well as conjugates made therewith are disclosed. Methods of making and using the bicine derivatives are also disclosed.

A resin composition is prepared by reacting components comprising dibasic acid, diamine, polyol and monoalcohol, wherein (a) at least 50 equivalent percent of the dibasic acid comprises polymerized fatty acid; (b) at least 50 equivalent percent of the diamine comprises ethylene diamine; (c) 10-60 equivalent percent of the total of the hydroxyl and amine equivalents provided by diamine, polyol and monoalcohol are provided by monoalcohol; and (d) no more than 50 equivalent percent of the total of the hydroxyl and amine equivalents provided by diamine, polyol and monoalcohol are provided by polyol. This resin composition may be formulated into, for example, personal care products, fragrance releasing products and candles.

The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(alkyl vinylether-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(alkyl vinylether-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(alkyl vinylether-co-maleimide) polymer product with an extender oil sufficient to form the gel. The present invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.

A multi-layer structure excellent in the barrier properties against alcohol gasoline, particularly hydrocarbon components, and also excellent in the interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance is provided. The stractive is a multi-layer structure comprising two or more layers including at least a layer (a) comprising (A) nylon 11 and/or nylon 12 and a layer (b) comprising (B) a polyamide resin (nylon 9T) consisting of a dicarboxylic acid component and a-diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine, and preferably further including a layer (c) comprising (A) nylon 11 and/or nylon 12 or (C) nylon 6.

The invention discloses a strong-inhibition water-base drilling fluid which comprises the following components in parts by mass: 100 parts of water, 0.2-4 parts of polyamine inhibitor, 0.1-1 part of coating inhibitor, 10-25 parts of hydrate inhibitor, 0.1-1 part of tackifier, 0.5-5 parts of fluid loss agent and 0.5-3 parts of liquid lubricant. The polyamine inhibitor is an amino polymer polymerized from polyether diamine and epoxy alkane; and the mol ratio of the polyether diamine to the epoxy alkane is 1-10:1-20. The drilling fluid disclosed by the invention can effectively inhibit wellbore instability of deepwater shallow strata, and has equivalent inhibition capability to an oil-base drilling fluid. The drilling fluid disclosed by the invention can solve the problem of generation of hydrate in deepwater drilling, and is applicable to 3000m-deep drilling operation. The drilling fluid disclosed by the invention has favorable low temperature-high temperature stability, and is applicable to a deepwater large-temperature-difference environment (2-150 DEG C).

The invention discloses polyhexamethylene guanidine propionic acid and preparing method thereof. The preparing method employs stepwise synthesis, which includes steps of: sufficiently mixing dicyandiamide and alanine under high temperature to synthesize aminoguanidine propionic acid, mixing the aminoguanidine propionic acid, triethylidenepropyldiamine and initiator under high temperature to synthesize the polyhexamethylene guanidine propionic acid. Advantages of the invention are: sterilization effect is excellent, toxity is actually nontoxic level, effect of sterilization is better than existent technique, due to overcoming strong hygroscopicity in existence, the polyhexamethylene guanidine propionic acid can be produced to stable powder, thereby being widely used in fields such as weave, plastic, daily chemicals and water treatment.

A composition comprises an impact modifier and a compatibilized blend of a poly(arylene ether) and an aliphatic-aromatic polyamide. The polyamide is composed of dicarboxylic acid units comprising 60 to 100 mol % of terephthalic acid units and diamine units comprising 60 to 100 mol % of 1,9-nonanediamine units and/or 2-methyl-1,8-octanediamine units. The polyamide has an amine end group content greater than 45 micromoles per gram of polyamide.