摘要:
A process for preparing acid formates which comprises (a) partially hydrolyzing methyl formates with water; (b) separating off by distillation methyl formate and methanol from the reaction mixture obtained in process stage (a), forming a stream comprising formic acid and water; and (c) combining the stream comprising formic acid and water from the process stage (b) and the corresponding formate, forming a mixture comprising the acid formate and water, an apparatus for their preparation and their use.
摘要:
The invention relates to a method for producing a solid sodium diformate preparation having a minimum formic acid concentration of 35 percent by weight relative to the total weight of the sodium diformate preparation. According to said method, an aqueous solution having a molar ratio HCOOH:HCOONa of more than 1.5:1 and a molar ratio HCOOH:H2O of at least 1.1:1 is produced from sodium formate and at least 74 percent by weight of formic acid at an elevated temperature, the aqueous solution is crystallized, and the solid phase is separated from the mother liquor. (i) A partial amount (A) of the mother liquor is used during the production of the aqueous solution while (ii) a partial amount (B) of the mother liquor is mixed with a sodium-containing base and the obtained sodium formate-containing mixture is also used during the production of the aqueous solution, optionally after separating a portion of the same and optionally after concentrating the same, the partial amounts (A) and (B) of the mother liquor amounting to 100 percent by weight.
摘要翻译:本发明涉及相对于二甲酸钠制剂的总重量,具有35重量%的最小甲酸浓度的固体二甲酸钠制剂的制备方法。 根据所述方法,由甲酸钠和甲酸钠制备HCOOH:HCOONa的摩尔比大于1.5:1,摩尔比HCOOH:H 2 O 2为至少1.1:1的水溶液, 在升高的温度下至少74重量%的甲酸,水溶液结晶,并将固相与母液分离。 (i)在制造水溶液期间使用母液的部分量(A),同时(ii)将一部分(B)母液与含钠碱混合,得到的甲酸钠 - 在制备水溶液时也可以使用含水混合物,任选地在分离其一部分后,任选地在浓缩之后,母液的部分量(A)和(B)均为100重量%。
摘要:
The present invention relates to coated preparations comprising at least one diformate of the general formula XH(COOH)2, where X is Na, K, Cs, NH4 and to the use thereof.
摘要:
Apparatus and article of manufacture for processing electronic rebates are disclosed. In one embodiment, a purchase identifier is linked to a purchase of a product. The purchase identifier is listed on a receipt upon the purchase of the product or contained in an electronic mail message sent to an electronic mail address accessible using a user computer system. Information is then received via a network from a user of the user computer system to complete a rebate claim for the purchased product. The received information is verified to determine whether the purchase identifier was provided. The rebate claim is granted if the received information is verified as correct.
摘要:
A method for processing electronic rebates is disclosed. In one embodiment, a purchase identifier is linked to a purchase of a product. The purchase identifier is listed on a receipt upon the purchase of the product or contained in an electronic mail message sent to an electronic mail address accessible using a user computer system. Information is then received via a network from a user of the user computer system to complete a rebate claim for the purchased product. The received information is verified to determine whether the purchase identifier was provided. The rebate claim is granted if the received information is verified as correct.
摘要:
The invention relates to a method for producing formic acid formates, whereby (a) formic acid methyl ester is partially hydrolysed with water; (b) formic acid methyl ester and methanol are separated by distillation from the reaction mixture obtained in step (a), forming a current containing formic acid and water; (c) the current obtained in step (b), containing the formic acid methyl ester and optionally methanol, is converted into a current containing formate and water, by (i) reaction with a basic compound having a pKa value of the corresponding acid of the corresponding dissociation step of =3, measured at 25° C. in an aqueous solution, in presence of water, and (ii) separation by distillation of the methanol; and (d) the current obtained in step (b), containing formic acid and water, and the current obtained in step (c), containing formate and water, are combined to form a mixture containing the formic acid formate and water. The invention also relates to a device for producing said formic acid formates and to the use of the same.
摘要:
A process is proposed for preparing acid formates in which a liquid stream I comprising formic acid and a liquid stream II comprising a metal formate are prepared, the liquid streams I and II are fed to a rectification column in such a manner that a higher or identical feed point to the rectification column is chosen for the liquid stream II than for the liquid stream I, the liquid streams I and II are mixed in the rectification column, with water being removed overhead from the rectification column and a bottoms stream comprising the acid formate is taken off from the rectification column, which comprises the bottoms stream being produced as melt comprising less than 0.5% by weight of water.
摘要:
A process is proposed for preparing acid formates by providing a liquid stream I containing formic acid and a liquid stream II containing a metal formate, and mixing the liquid stream I with the liquid stream II, obtaining the corresponding acid formate, which comprises feeding, to the liquid stream I or a precursor thereof, to the liquid stream II or a precursor thereof, or to the mixture of the liquid streams I and II, a liquid stream III containing the following components at contents of in each case >0.1% by weight: metal formate, metal methoxide, methanol and MeFo (MeFo), which is produced in a process for preparing MeFo by carbonylating methanol in a reactor at a pressure up to 50 MPa absolute in the presence of a metal methoxide as homogeneous catalyst.
摘要:
The present invention relates to preparations comprising at least one diformate of the general formula XH(COOH)2, where X=Na, K, Cs, NH4 and at least one short-chain carboxylic acids and/or at least one salt of the short-chain carboxylic acid and/or at least one ester and/or at least one derivative of the short-chain carboxylic acid, and to the use of these preparations.