Navjyot Chemicals & Commodities P. Ltd.

Santacruz, Mumbai, Maharashtra

• MOQ 500 Kilogram

We offer a comprehensive range of rightly composed acrylic acid. Acrylic acid is a clear and colorless chemical compound with an acrid odor. It can be mixed with water, alcohol, ether and chloroform. Nonylphenol is an organic compound of the wider family of alkylphenols.

• MOQ 500 Kilogram

We are the leading and trusted importers, suppliers and distributors of a wide range and high variety of acrylamide. It widely finds application as flocculant, water treatment chemicals, textile sizing agent and paper chemicals.

• MOQ 500 Kilogram

A method is provided for producing adipic acid. The method comprises the steps of culturing a cell transformant capable of converting a carbon source to catechol for a period of time sufficient to convert said carbon source to catechol, biocatalytically converting the catechol to cis, cis-muconic acid using catechol 1, 2-dioxygenase, and hydrogenating the cis, cis-muconic acid to produce adipic acid.

• MOQ 1000 Kilogram

The oxidation of hydrocarbons to produce maleic anhydride using a catalyst system comprising a vanadium oxide, a molybdenum oxide or mixtures thereof is well known. More recently, such catalyst systems have included materials in addition to the vanadium andor molybdenum oxides, e.g., phosphorous, silica or titanium, and are discussed in u.s. Pat. No. 4, 113, 745 entitled "catalyst for and method of producing maleic anhydride" to strojny et al, which describes a process for obtaining maleic anhydride wherein a c5 hydrocarbon stream is oxidized with an oxygen-containing gas over a catalyst mixture containing 30 to 60 weight percent vanadium oxide, 5 to 40 weight percent molybdenum oxide and 25 to 60 weight percent titanium oxide on an alpha alumina or alumina silica support having a surface area of less than one square meter per gram. The presence of titanium oxide in selected amounts in the catalyst apparently results in higher maleic anhydride yields and permits slightly lower temperatures during the reaction.

• MOQ 1000 Kilogram

This invention relates to a method for removing diisopropylether from its admixture with a hydrocarbon. More particularly, the invention provides a process from removing diisopropylether from chemical or refinery process streams of propane, propylene and their admixture.

• MOQ 1000 Kilogram
• Brand NameVIETNAM

His invention relates to the treatment of phosphoric acid and more specifically to the treatment of concentrated phosphoric acid. Phosphoric acid suitable for use by the semiconductor industry must be of high purity. Increasingly stringent specifications of the semiconductor industry are continuously being established because of the efforts expended in miniaturization of the components. The calcium content of the phosphoric acid is one of the critical impurities permissible in the acid and presently 85% phosphoric acid containing up to 5 ppm calcium is acceptable by the industry. As miniaturization proceeds, the industry specifications will reduce the acceptable calcium level. The present invention provides a means for reducing selectively and substantially the calcium content of relatively high purity 85% phosphoric acid; that is, phosphoric acid containing about 61% p2 o5 and having a specific gravity of about 1.68. A convenient source of a commercial grade of phosphoric acid of relatively high purity is food grade 85% phosphoric acid. The specifications for this grade of phosphoric acid do not include a limit for the calcium content which may vary up to about 0.02%. It has been found that the calcium content of the concentrated phosphoric acid may be reduced substantially by contacting the acid with a strong cation exchange material or resin in its acid form.

• MOQ 1000 Kilogram

Nited states patent ofilice 3, 285, 958 patented nov. 15, 1966 the invention described herein may be manufactured and used by or for the government for governmental purposes without the payment to me of any royalty thereon. This invention relates to triaminoguanidine (hereinafter referred to as tag) and salts thereof and more particularly concerns unique and improved processes for their preparation. In the past, tag had been prepared by stolle and krauch by reacting dicyandiamide (hereinafter referred to as dcda) and hydrazine hydrate at 40 c. For about 8 hours. The low yield product isolated was identified as the tribenzylidene hydrochloride derivative and data concerned therewith are shown in the table, experiment no. 1. When the reaction temperature was raised to 110 c. (exp. No. 2) and the reaction time decreased to about 5 2 hours, other conditions remaining generally the same, no triaminoguanidine nitrate (hereinafter referred to as tagn) was formed. Tagn may be prepared by the aqueous fusion of calcium cyanamide and hydrazine nitrate. If dcda disproportionates into cyanamide in accordance with the reaction it would appear likely that hydrazine nitrate would react and form tagn as in the aqueous fusion of calcium cyanamide. When dcda was used under similar conditions as the calcium cyanamide fusion method, no tagn was formed as shown in the table, experiment no. 3. Since tag compounds are finding widespread application in vital rocket and artillery components as well as in explosives, des-oxidants, organic intermediates, etc., it would be advantageous if improved processes for their preparation could be developed. It is therefore a broad object of this invention to provide processes for preparing tag compounds.

• MOQ 1000 Kilogram

The invention relates to granules which incorporate citric acid monohydrate as an exotherm control agent within a peracid containing core for improved dissolution rates of the peracid from the core in a washing cycle.

• MOQ 1000 Kilogram

A process for polymerisation of diethylene glycol bis allyl carbonate field of invention this invention relates to a process for polymerisation of diethylene glycol bis allyl carbonate. The polymerised carbonate may be used for lenses having a low refractive index.

• MOQ 1000 Kilogram

Field of the invention this invention relates to corrosion inhibition and, in particular, to corrosion inhibition by potable waters such as municipal drinking waters and the like. 2. Brief description of the prior art treatment of water with soluble salts such as alkali metal hexametaphosphates has been practiced for many years. The hexametaphosphate salts were initially employed in threshold treatment of waters such as boiler feed water and the like since it was recognized that the hexametaphosphate was a strong complexing agent for iron and manganese, preventing their precipitation and resultant scale formation on the equipment of steam power plants. An outgrowth of the threshold treatment of water was the discovery that the hexametaphosphate salts could also be employed to inhibit or prevent corrosion of iron and mild steel surfaces. The exact mechanism of this corrosion prevention is not entirely understood although it is generally believed that the hexametaphosphate forms a protective, passivating film on the metal surfaces. It has long been recognized that the hexametaphosphate must be employed at concentrations of at least about 50 or 60 ppm to achieve passivating of fresh metal surfaces, following which the concentration can be reduced to about 20-30 ppm to maintain the film. Attempts to achieve corrosion prevention with lower concentrations of the hexametaphosphate have not been successful in reducing the overall corrosion rate, although some investigators have reported that hexametaphosphate salts have been observed to reduce the pitting nature of the corrosion when employed in low concentration. It is desirable to minimize the quantities of phosphate additives in water to lessen the risk of promoting growth of algae and aquatic plants. It is also desirable to minimize the amounts of complex phosphates, such as hexametaphosphate in water to avoid undesirable coagulation proble

• MOQ 1000 Kilogram

United states patent 1191 broz sept. 9, 1975 process for preparing 2, 409, 441 101946 metzger 260637 r monoethylene glycol and 2, 430, 443 111947 pecker... 260348.5 r 2, 756, 241 71956 c0urter.., 260635 e ethylene oxide 3, 367, 847 21968 pierson 260637 r [75] inventor; stephen e. Broz, beaumont, tex, 3, 418, 338 121968 gilman et a1. 260348.5 r 3, 597, 452 81971 laemmle et a1. 260348.5 asslgneel ppg lndustl'les, pmsburgh, 3, 732, 320 51973 ford 260637 r [22] filed: feb. 13, 1973 [21] appl 332 056 primary examiner-joseph e. Evans attorney, agent, or firm-lrwin m. Stein [52] us. Cl... 260348.5 r; 260635 e; 260637 r [51] int. Gl c07c 3120; c07d 30132 [57] abstract [58] field of search 260635 e, 348.5 r, 637 r an improved process for p p g fiber grade mono [56] references cited ethylene glycol is provided which obviates the need for sewering large amounts of water. United states patents 2, 125, 333 81938 caner 260348.5 r 3 claims, 1 drawing figure e.o.reactor absorber stripper reabsorber e.o.refining e.o, purify|ng columns (step a.) (step b) (srep c) (step d) (srep h) rec cle e1hy|ene 5.0. 1 5.0. 5.0. 00 5.0. H20 h20 r 5011 6 air 1 ethylene e.o.h20 p 5.0. Furge (inorganicsalts am u-v-absorbers)e.g.hg0 steam (condensed) g was h o meg 05 e 325r zxrllfi'e (optional 5014 0 h2o degasser activated teg carbon h20 meg deg teg deg teg teg ethylene glycol drying distillation train reactor evaporation column 1145s 05s teg (srep e) (srepf) -srep gl process for preparing monoethylene glycol and ethylene oxide description of the invention ethylene glycols (monoethylene glycol, diethylene glycol and triethylene glycol) are prepared commercially by several methods. One of these methods involves a two-stage reaction system, the first stage of which requires the direct o

• MOQ 1000 Kilogram

Process for lthe production of sodium nitrite filed july 23, 1932 attorney patented mar. 3, 1936 united states patent office process for the production of sodium nitrite york application july 23, 1932, serial no. 624, 200 8 claims. This invention relates to a process for the production of sodium nitrite by the absorption of nitrogen oxides in alkaline solutions such as solutions of sodium hydroxide or carbonate, and it is an object of this invention to provide a process whereby sodium nitrite of a high degree of purity may be recovered from the solution thus produced, with an economical utilization of the raw materials entering the process and their complete recovery, principally in the :form of sodium nitrite, but also in the form of a mixed nitritenitrate by-product. One feature of the invention is an improvement in the process for the absorption of nitrogen oxides in a solution of sodium carbonate to form sodium nitrite wherein the nitrogen oxides are passed in series through a plurality of absorption stages in contact with the solution and the solution is cooled to crystallize solid sodium nitrite, which improvement involves separating the crystallized solid sodium nitrite from the mother liquor and mixing the mother liquor with the sodium carbonate solution undergoing treatment with the nitrogen oxides. Another portion of the mother liquor is withdrawn and a mixed solid sodium nitrate-sodium nitrite product is recovered therefrom.

• MOQ 1000 Kilogram

United states patent abstract of the disclosure a method for producing soda ash from natural crude trona ore including the following steps: crushing crude trona ore into granules, calcining the crushed crude trona at an elevated temperature to form sodium carbonate and to remove organic materials, dissolving the calcined trona in liquid recycled from the process and make-up water, clarifying and filtering the resulting solution to remove insolubles, adding carbon dioxide to the resulting solution to precipitate sodium sesquicarbonate crystals therefrom, separating the sodium sesquicarbonate crystals from the liquid from which the crysals have precipitated, recycling the liquid to the dissolution step and calcining the separated sesquicarbonate crystals to produce a soda ash product.

• MOQ 1000 Kilogram

Manufacturing process of hydrazine hydrate 5 j l p w 5 5 a mm 5p 3 wc 1 d m int. Cl. C01c 128 u.s. Cl. 23190 1 claim abstract of the disclosure process for producing hydrazine hydrate by the hydrolysis of a ketazine under atmospheric pressure, which process involves heating a ketazine composition containing ketone and hydrazine hydratein a mol ratio of less than 2.0 and the vapor evolved from this first stage is passed through a first column consisting of multiple stages of a ketazine material in which the ketone to hydrazine hydrate ratio in the liquid becomes larger stage by stage, and whereby the corresponding ketone is produced by means of continual hydrolysis, said ketone being removed by fractional distillation and wherein the hydrazine hydrate is removed from the first stage.

• MOQ 1000 Kilogram

Field of invention [0001] this invention relates to processes and intermediates for the stereoselective synthesis of substituted morpholine derivatives, which can serve as nk1 receptor antagonists. In particular, the invention allows the stereoselective preparation of new compounds, which allow an efficient access to aprepitant and fosaprepitant, two potent and orally active nk1 antagonists.

• MOQ 1000 Kilogram

Technical field [0001] the present invention relates to a purifying method which can give highly pure caustic potash (potassium hydroxide), and the present invention provides a method which can give highly pure caustic potash at low cost and in a simple process by removing, for example, sodium and chlorine, as well as heavy metals, such as iron, chromium and nickel, from the caustic potash to be treated.

• MOQ 1000 Kilogram

Method for preparing a liquid akd wax technical field [0001] the present invention relates to the field of papermaking, and more particularly to a method for preparing a liquid akd wax. Background technique [0002] akd wax into solid and liquid. Wherein the liquid alkyl ketene dimer (also known as branched chain alkyl ketene dimer, referred to as liquid akd wax) belong to the sizing categories, it is still in the research stage at home and abroad, much practical application. After the wax is liquid akd sizing development. Liquid wax has a slip coefficient is small, suitable for high speed rotary printing advantages can clean paper systems to reduce pollution emissions, energy conservation has the role of increasing the reaction rate of akd, fast curing, low temperature sizing features.

• MOQ 1000 Kilogram

background of the invention 1. field of the invention this invention relates to a process for high yield manufacture of high purity melamine and the apparatus to carry out the process. more particularly this invention is directed to melamine preparation starting from urea using a high pressure process. 2. description of prior art melamine is presently manufactured from urea according to the following simplified reaction scheme:

• MOQ 1000 Kilogram

United states l atent c) 3, 355, 490 process of manufacturing cyclohexylamines frederik h. Van munster, waukegan, ill., assignor to abbott laboratories, chicago, ill., a corporation of illinois no drawing. Filed aug. 19, 1964, ser. No. 390, 719 8 claims. (cl. 260-563) abstract of the disclosure n-alkyl-(or n, n-dialkyl)-cyclohexylamine or methylcyclohexylamine are prepared from phenol, a primary or a secondary alkylamine and hydrogen in the presence of rhodium or palladium as the catalyst. The present invention relates to the manufacture of n-substituted cyclohexylamines; more particularly, it relates to the preparation of n-alkyl-substituted cyclohexylamine from phenol or cresol and an appropriate amine. The products of the present invention have heretofore been made only by rather complicated procedures, mainly procedures involving expensive starting materials or costly process conditions such as high temperatures and high pressures. The alkylated cyclohexylamines of the present invention are useful as fuel oil additives, as rubber accelerators, as catalysts in the preparation of polyurethane foams, as rust inhibitors, or as textile modifiers. They are also useful in the synthesis of more complex organic compounds such as drugs.

United states patent 3, 399, 976 process for producing borax decahydrate crystals alan d. Randolph, gainesville, fla., assignor to american potash & chemical corporation, los angeles, calif., a corporation of delaware continuation-impart of application ser. No. 438, 840, mar. 11, 1965. This application july 24, 1967, ser. Claims. (cl. 23-301) abstract of the disclosure a process for controlling the mean size and size range of borax decahydrate crystals produced from a magma containing solid phase borax and water saturated with borax. The temperature and solids concentration of the magma are controlled to produce two basic crystal size distributions, one having a mean particle size of less than about 45 mesh and the other having a mean particle size of greater than about 45 mesh. Borax crystals of the smaller particle size are crystallized from the magma when the magma is maintained at a temperature of less than 115 f. And a solids concentration of greater than 0.25 gram of solid borax crystals per cubic centimeter of solids-free mother liquor. Borax crystals of the larger particle size are crystallized from the magma when it is maintained at a temperature higher than 115 f. And a solids concentration of less than 0.25 gram per cubic centimeter.

• MOQ 1000 Kilogram

Ited states patent ziffer [541 process for producing sodium gluconate 72 inventor: jack zifier, milvsiaukee, wis. [73] assignee: pabst brewing company, milwaukee, wis. March 4, 1971 1211 appl. No.: 121, 201 [52] us. Cl. .260527 r, 260535 r [5 1] int. Cl .c07e 5906 [58] field of search ..260535 [56] references cited foreign patents or applications 1, 130, 431 81958 germany ..260535 1451 sept. 26, 1972 primary examiner lorraine a. Weinberger assistant examiner-paul j. Killos attorney-johnston, root, okeeffe, keil, thompson & shurtleff [5 7 abstract 8 claims, no drawings processfor producing sodium olucona're background it is known in the art to prepare a technical grade sodium gluconate from a liquid gluconic acid-gluconatecompo'sition made by a fermentationprocess as described in us. Pat'no. 3, 454, 501 and according to sodium gluconate product is apparently due to.trace impurities, probably carbohydrates, and the heat'treatment which occursin the drying operation. As a consequence, technical grade sodium gluconate is produced which is tan in color rather, than white and while. This does not; impair the effectiveness of the product, .it leaves much to bedesired from the stand, - point of'appearance.

• MOQ 1000 Kilogram

The present invention relates to industrial organic synthesis, specifically to production of phenol and acetone by the cumene method. [0002] a well-known method for the production of phenol and acetone by oxidation of cumene with atmospheric oxygen, followed by the acid-catalytic decomposition of cumene hydroperoxide permits both end products to be produced with high yield (see, for example, kruzhalov b. D., golovanenko b. N., combined production of phenol and acetone, moscow, goskhimizdat, 1964, or kirk-othmer encyclopedia of industrial chemistry). This method is widely used to produce these products and is the principal technique used in world practice. [0003] methods are know for producing phenol and acetone in which, to reduce the yield of phenol tar, cumene oxidation products containing cumene hydroperoxide (chp), cumene, and dimethylphenylcarbinol (dmpc) cleavage in the presence of sulfuric acid to be separated in two stages. In the first stage, at a temperature of 55 to 80°c, most of the chp (97 to 99%) is decomposed and dicumyl peroxide (dcp) is synthesized from dmpc and chp. In the second stage, acetone is added and the process fulfilled at a temperature of 80 to 146°c to the obtained

• MOQ 10000 Kilogram
• Brand NameImported
• ApplicationMany
• Number Of FlowerGyrated

Phenol may be produced from cumene by the oxidation of cumene to cumene hydroperoxide, followed by cleavage of the hydroperoxide to phenol and acetone. In such a process, the reaction product is introduced into a separation and recovery system wherein the crude product is initially treated in a distillation column to separate acetone byproduct from the remaining mixture. The acetone-free product is then introduced into a further distillation column which operates to separate cumene from the remaining product. Optionally, the cumene recovery column can be operated to recover alpha-methylstyrene (ams) with the cumene. If the ams is not recovered with the cumene, the product remaining from the cumene column is introduced into a crude ams column to separate ams from the remaining mixture.

• MOQ 1000 Kilogram

This invention rel temperatures not :belowo" c. 1 completely as a'polymen patented ma 21, 1935 I u 2, 002, 243 7 1 nor aldnnynasolurron pat .wiibifisebtti;hifi garene im bay, staten island, jn., y., assignor to e. .ldu pont. De nemours 8a company, ind, wilmington, del, 1a corporation of delaware f I dr w n 19*; I l f r aqueous formaldehyde; solutions; a aqueous solutions of substantially pure formal-; dehydecontaining not over30 of thealdehyde are stable at temperatures of c. And above, i. Elnoformaldehyde polymer will precipitate from such solutions at thesetemperatures- hence, such a solution, if kept pure fne'ed not be; stabilized if it is tobe stored and transported at aqueous solutions of formal much in excess of 30% by weight of, formaldee hyde, if allowed to stand at temperatures above. 0 c. Will precipitate formaldehyde polyrner, the

Printing ink based on acrylic r metha- crylic acid copulymers and polyoxy- ethylene elihu j. Aronotf, glen oaks, n.y., and paul d. Whyzmuzis, clifton, n.j., assignors to interchemical corporation, new york, n.y., a corporation of ()hio no drawing. Filed jan. 31, 1964 ser. No. 341, 744 11 ciaims. (cl. Mil-31.4) this invention relates to novel printing inks in which bronzing has been sharply curtailed or substantially eliminated. Bronzing is an undesirable effect occurring in printed matter of many inks. It may be described as being caused by the strong reflection of a narrow band of wave lengths of light from the surface of the pigment in the printed matter. This is observed as a vivid glare. Red pigments tend to give a golden-yellow bronze when exposed to white light; yellow pigments give a bluish bronze which may pass unnoticed under ordinary circumstances and blue pigments give bronzes which may vary from reddish purple to bright orange.