Abstract:
PROBLEM TO BE SOLVED: To provide a thermally stable cross-linking agent having an obviously lower vapor pressure than that of a triallyl isocyanurate [TAICROS], but having comparable cross-linking efficiency and polymerization characteristics.SOLUTION: There is provided a process for production of a cross-linked organic polymer by a reaction of a polymer and the cross-linking agent, wherein the cross-linking agent includes a compound shown by formula I or II.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of producing 2, 4, 6-tri-mercapto-1, 3, 5-triazine which surpasses the method of the prior technique in the economical aspect and the environmental aspect and can overcome defects in the heretofore known method.SOLUTION: The method of producing 2, 4, 6-tri-mercapto-1, 3, 5-triazine includes a process of acidifying a solution of a salt corresponding to 2, 4, 6-tri-mercapto-1, 3, 5-triazine in the aqueous solution to produce the 2, 4, 6-tri-mercapto-1, 3, 5-triazine while keeping a scope of pH1.5 to 2.5 during operation of acidifying.
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject polymer for a bactericide, etc., capable of inhibiting growth of undesirable seaweeds and plants by adding highly purified acrolein to an alkali aqueous solution containable an emulsifier, etc., with keeping a room temperature and neutralizing with an aqueous solution of mineral acid. SOLUTION: This acrolein-releasable emulsion homopolymer releases acrolein in an aqueous system at a pH higher than 7 and a bactericidal action is exhibited by the releasing to inhibit growth of undesirable seaweeds and plants, thus is useful as a very effective bactericide in treating a waterway or for control of a sulfate reducing bacterium in investigation of petroleum. The emulsion homopolymer is obtained by previously charging an alkali aqueous solution containable of an emulsifier or a humectant in a tank, adding acrolein preferably having >=95wt.% purity to the solution while keeping a temperature at
Abstract:
The invention is directed to an improved, reliably performable process for preparing triallyl isocyanurate (TAIC) by Cu 2+ -catalysed rearrangement of triallyl cyanurate (TAC) at at least 90°C. According to the invention, TAC and, if required, also a Cu 2+ catalyst and solvent are fed continuously to a start reaction mixture after onset of the initially inhibited isomerization reaction, the isomerization is performed at from 90 to 160°C and an amount of reaction mixture equivalent to the amount of reactant is drawn off continuously and sent to the workup. Preference is given to effecting the isomerization in TAIC as the reaction medium.
Abstract:
PROBLEM TO BE SOLVED: To obtain a chlorhexidine preparation containing chlorhexidine in a water-soluble form by including a chlorhexidine base and a specific saccharic acid or its lactone at a specific molar ratio and further including an auxiliary at a specific amount. SOLUTION: This chlorhexidine preparation has a form of water-soluble powdery mixture. The chlorhexidine comprises (A) chlorhexidine base and (B) one or more saccharic acids or their lactone selected from a series of compounds comprising gluconic acid or gluconolactone, lactobionic acid (a compound of formula I), D-galactone-γ-lactone (a compound of formula II), L-mannonic acid-γ-lactone (a compound of formula III), D-(-)-gluconic acid-γ- lactone, D-(+)-galactouronic acid (a compound of formula IV) and α-D- heptagluconic acid-γ-lactone at a molar ratio of 1:>=2, preferably 1: (2.05-2.6) and further comprises (C) 0-10 wt.%, preferably
Abstract:
Procedimiento para preparar amidas cíclicas a partir de las correspondientes cetoximas por calentamiento de la cetoxima en presencia de cloruro cianúrico, caracterizado por que la cetoxima es una cetoxima cíclica que tiene un tamaño de anillo de 6-12, la reacción se realiza en presencia de una cantidad de cloruro cianúrico basada en la amida de 1,5 - 13% en moles, la reacción se realiza en un disolvente orgánico no polar que tiene un valor de logP (octanol-agua) de 2 - 14, y en la que los disolventes se seleccionan del grupo que consiste en: ciclododecano, ciclodecano, ciclooctano, cicloheptano, ciclohexano, ciclopentano, n-nonano, n-octano, n-heptano, n-hexano, n-pentano, isooctano, hidrocumeno y mezclas de los mismos.
Abstract:
The present invention is directed towards a method for the production of 2,4,6-trimercapto-1,3,5-triazine (TMT-H3). In particular, the method of the subject matter relates to the operation of acidifying the salts of 2,4,6-trimercapto-1,3,5-triazine in aqueous solution and in a defined pH range.
Abstract:
The invention is directed to an improved, reliably performable process fo r preparing triallyl isocyanurate (TAIC) by Cu2+-catalysed rearrangement of triallyl cyanurate (TAC) at at least 90øC. According to the invention, TAC a nd, if required, also a Cu2+ catalyst and solvent are fed continuously to a start reaction mixture after onset of the initially inhibited isomerization reaction, the isomerization is performed at from 90 to 160øC and an amount o f reaction mixture equivalent to the amount of reactant is drawn off continu ously and sent to the workup. Preference is given to effecting the isomeriza tion in TAIC as the reaction medium.