Abstract: Fertilizers that contain urea-aldehyde condensates. The fertilizer can be spherical and can be formed using a granulation and/or spheronization technique and optionally can be an extruded fertilizer that is spheronized.

Abstract: The present invention provides a method for producing N-substituted carbamic acid-O-aryl ester derived from a compound having an ureido group, the method comprising the step of carrying out esterification or esterification and transesterification from the compound having the ureido group and a hydroxy composition containing one type or a plurality of types of hydroxy compounds.

Abstract: Compositions and methods for sealing, coating and adhering tissues are provided that utilize a polymeric system comprising at least a Polymer and a crosslinking agent; and, optionally, (i) a Gelation Disrupting Agent, (ii) an Augmentative Polymer or Monomer, (iii) an Adjunct Compound (iv) an Antimicrobial Agent (v) an Adhesion Enhancer, (vi) a Crosslink Augmentating Agent or any combination thereof. Additionally, a Therapeutic Agent may be incorporated.

Abstract: Chiral thioureas are effective catalysts for the borane reduction of prochiral ketones to optically active alcohols. A prochiral ketone may be reduced to an optically active alcohol in the presence of a substantially sub-stoichiometric amount of chiral thiourea. The asymmetric thiourea compound of the present invention may be produced according to a production method described herein.

Abstract: The invention relates to a method of improving the crushing strength and reducing the dust formation and the caking tendency of urea particles by the addition of an organic compound to the molten urea, where at least one carbohydrate and optionally a polyvinyl compound is added to the urea. The invention also relates to a composition to be used as a urea additive.

Abstract: A method of treating waste matter from animals, the method comprising: a) collecting waste matter from the animals; b) inhibiting urease activity in said collected waste matter; and c) separating said urease-activity inhibited waste matter into a urea-rich fraction and a urea-lean fraction; a system for treating waste matter from animals; a urea-lean biogas fuel product; a urea-rich animal waste-matter product; a method of controlling the content of nitrogen in manure from animals; a method of reducing gaseous ammonia in stables for animals; a stable for animals; a biogas reactor system for producing biogas from waste matter from animals; a method of producing urea from waste matter of animals; a method of producing urea formaldehyde; and a method of producing biogas fuel from waste matter of animals.

Abstract: The present invention relates to a production method of asymmetric compound (IV) which includes conjugately adding nucleophilic reagent (III) to compound (II) in the presence of asymmetric urea compound (I). The present invention provides a non-metallic asymmetric catalyst capable of realizing a highly stereoselective asymmetric conjugate addition reaction in a high yield, and an advantageous production method of an asymmetric compound by an asymmetric conjugate addition reaction using the asymmetric catalyst.

Abstract: A method for enhancing the purity of a desired compound comprising: Step (a) treating a crude reaction product which contains at least one desired compound, unreacted starting materials and/or byproducts with at least one bifunctional quenching agent that is capable of selective covalent reaction with unwanted byproducts, or excess reagents; Step (b) allowing the quenching agent to covalently react with unreacted starting materials and/or byproducts to afford a derivatized compound of the quenching agent: and Step (c) isolating the desired compound is described as well as novel quenching agents and methods for their use in the rapid purification of synthetic intermediates and products in synthesis, combinatorial chemistry, and automated organic synthesis.

Abstract: A method for enhancing the purity of a desired compound comprising:Step (a) treating a crude reaction product which contains at least one desired compound, unreacted starting materials and/or byproducts with at least one bifunctional quenching agent that is capable of selective covalent reaction with unwanted byproducts, or excess reagents;Step (b) allowing the quenching agent to covalently react with unreacted starting materials and/or byproducts to afford a derivatized compound of the quenching agent: andStep (c) isolating the desired compound is described as well as novel quenching agents and methods for their use in the rapid purification of synthetic intermediates and products in synthesis, combinatorial chemistry, and automated organic synthesis.

Abstract: A process for reducing the residual free ammonia emissions from an urea production plant comprises the step of feeding a gas flow comprising carbon dioxide (8) to a melt urea flow (3) coming from the concentration section (13) of the plant.

Abstract: New seco-D steroid derivatives, processes for their preparation and pharmaceutical compositions are provided, which are active on the cardiovascular system.

Abstract: A process for neutralizing the ammonia present in the molten urea originating from the concentration section of a plant for its production, comprising adding to the molten urea a small quantity of an acid.

Abstract: A delayed release fertilizer composition consisting essentially of a mixture of a urea-formaldehyde resin and a lignosulfonate prepared by spray-drying an aqueous mixture of a urea-formaldehyde resin and a lignosulfonate. The composition of this invention, is also use as a fertilizer carrier as a replacement for expanded vermiculite fertilizers.

Abstract: The present invention teaches a technique and provides for apparatus eminently useful for reducing the amount of sulfur currently needed by industry to coat water-soluble fertilizer materials such as, for example, granular or prilled urea. A further advantage of and benefits derived from the practice of the instant invention relates to the production of sulfur-coated urea products which have substantially higher nitrogen values than do urea products produced by prior art processes.

Abstract: One approach to improving storage stability, particularly that attribute characterized by reduction in the tendency for caking during storage of freshly prepared urea particles such as granules, is to treat the surface areas of the freshly prepared particles/granules with appropriate amounts and kinds of conditioning agents. This approach does not address the problem of increasing the hardness of the particles to impart improved high-strength characteristics thereto. A second approach to this problem of improving storage stability of urea granules is to admix and/or react certain anticaking and hardness improving additives into or with the urea melt prior to the solidification of urea particulates therefrom. The instant invention is directed to this second approach of imparting to the ultimately prepared urea particles both improved anticaking and hardness (as opposed to being easily crushed, i.e., friable) characteristics by means of addition to the urea melt of certain additives.

Abstract: Improved liquid, urea-sulfuric acid compositions noncorrosive to stainless steel contain about 5 to about 75 weight percent urea, about 5 to about 85 weight percent sulfuric acid, 0 to about 75 weight percent water and a corrosion inhibiting amount of a cupric ion-containing compound, in which the urea and sulfuric acid together comprise at least about 25 weight percent of the composition, and in which at least a portion of the urea and sulfuric acid are present as monourea sulfate, diurea sulfate or combinations thereof. The compositions may also contain amounts of selected dialkylthioureas sufficient to reduce their corrosivity to carbon steel.

Abstract: Improved, liquid, urea-sulfuric acid reaction product compositions, noncorrosive to carbon steel, contain about 5 to about 75 weight percent urea, about 5 to about 85 weight percent sulfuric acid, 0 to about 75 weight percent water, and a corrosion inhibiting amount of certain dialkylthioureas, in which the urea and sulfuric acid together constitute at least about 25 weight percent of the composition, the urea/sulfuric acid molar ratio of the composition is greater than 2 or less than 1, and a portion of the urea and sulfuric acid are present as monourea sulfate, diurea sulfate, or combinations thereof. The compositions can also contain corrosion inhibiting amounts of one or more cupric ion-containing compounds sufficient to reduce the corrosivity of the composition to stainless steel.

Abstract: Storage-stable, concentrated aqueous solution of nitrogenous compounds consisting essentially of urea and monomethylol urea singularly suited for the foliar feeding of plants. Upon application to a plant the urea content of the solution is quickly available for feeding purposes. The acid nature of the plant substrate in turn serves to counteract the built-in alkaline buffering capacity of the plant food solution thereby facilitating progressive condensation of the applied methylol urea. The resultant partial condensates are subject to microbial degradation in time thereby providing assimilable nitrogen for the ongoing feeding of the plant.