中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.021 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE2403443A1

    公开(公告)日：1975-07-31

    申请号：DE2403443

    申请日：1974-01-25

    Applicant: BASF AG

    Inventor： REUSS GUENTER DR ,  LUECKE EBERHARD DR ,  RENAUER ERICH DR ,  KERBECK ALFRED

    IPC: C08G12/00 ,  C08G12/04 ,  C08G12/10 ,  C08G12/22 ,  C08G12/40 ,  D21H17/49 ,  C08G12/16

    Abstract: 1489656 Paper-treating aminoplast resins BASF AG 24 Jan 1975 [25 Jan 1974] 3118/75 Heading C3R [Also in Divisions D1-D2] A condensation product is prepared in a single step reaction by mixing together (a) a neutralization product of pH 6-8 obtained from at least one carboxylic acid of pK 2 value at least 3À5 and ammonia and/or at least one C 1-5 primary alkyl amine, (b) 0À8-1À4 mols per carboxyl group in (a) of urea or an equivalent amount of another carbonamide, (c) 0À8-1À4 mols per carboxyl group in (a) of dicyandiamide, and (d) 3À2-4À5 moles of formaldehyde per mole of dicyandiaamide, and, after the reaction mixture has reached its highest temperature (due to the spontaneous reaction) and a constant pH, heating it at 70-100‹ C. for 0À5-5 hours. Suitable acids for (a) are C 1-5 alkane monocarboxylic acids; suitable amides (b) are formamide, acetamide, urea, alkyl- and dialkylureas, and urethanes. In Examples 1-4 a solution of 1 mole of urea and 0À75-1À25 moles of ammonia is brought to pH 7 with formic acid, then 1 mole of dicyandiamide and 3À5-4À2 moles of formalin are added; the pH becomes 5 and the mixture is heated for 0À15-5 hours, then neutralized with NaOH. In Example 5 2 moles of formamide or acetamide are used instead of the urea in a similar process. The products may be used as solutions or be spray dried. Uses.-Dye fixing agents and sizes for paper.

    3.
    发明专利
    未知

    公开(公告)号：DE3402995A1

    公开(公告)日：1985-08-08

    申请号：DE3402995

    申请日：1984-01-28

    Applicant: BASF AG

    Inventor： AICHER ALBRECHT ,  LEHMANN GUNTER ,  PETRI NORBERT DR ,  PITTEROFF WALTER DR ,  REUSS GUENTER DR ,  SCHREIBER HANS ,  SEBASTIAN ROBERT

    IPC: B01J23/00 ,  B01J23/50 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C45/80 ,  C07C45/81 ,  C07C47/04 ,  C07C47/055 ,  C07C67/00

    Abstract: Formaldehyde is prepared by (a) passing a mixture of methanol and water with a concentration of between 50 and 90% by weight, based on the total weight of the two substances, of methanol into a packed column which possesses a packing having a total layer thickness of not less than 50 cm and a total surface area of not less than 0.5 cm2 per cm3 of packing, a liquid circulation of from 15 to 90 g/min per g/min of methanol fed to the column, and a concentration of from 10 to 45% by weight of methanol in the recycle liquid, the temperature at the point of entry of the recycle liquid in the column being from 50 DEG to 86 DEG C. and the bottom temperature being 10 DEG -25 DEG C. lower than this, i.e. from 40 DEG to 70 DEG C., (b) separating off methanol and water from the column by stripping with air, an inert gas and/or exit gas, the throughput being from 0.5 to 3 tonnes of methanol and water per hour per m2 of column cross-section, (c) converting the gaseous mixture of methanol, water, air, inert gas and/or exit gas at a space velocity of from 0.5 to 3 tonnes of methanol per m2 of catalyst bed cross-section per hour, in the presence of a silver catalyst at from 550 DEG to 750 DEG C. and (d) finally, cooling and absorbing the hot reaction gases, and using the resulting heat of absorption and, if desired, the heat of reaction and/or the heat of condensation partially or completely for heating the recycle liquid, methanol containing impurities being used if desired and, after the stages (a) and (b) and before the stages (c) and (d), the measures of a stage (e) being carried out, wherein the gaseous mixture formed is passed through two layers of wire filter having a wire diameter of from 0.1 to 0.5 mm and a free layer volume of from 90 to 99.5 vol. %, based on the total volume of one wire layer, at a flow rate of from 7 to 13 m/sec in the first layer, and from 1 to 4 m/sec in the second layer. The formaldehyde obtainable by the process of the invention is a disinfectant, tanning agent, reducing agent and a useful starting material for the preparation of synthetic resins, adhesives and plastics.

    4.
    发明专利
    未知

    公开(公告)号：DE1793433A1

    公开(公告)日：1971-07-01

    申请号：DE1793433

    申请日：1968-09-17

    Applicant: BASF AG

    Inventor： REUSS GUENTER DR ,  ENGELBACH HEINZ DR ,  HAUG JUERGEN DR

    IPC: B01J23/90 ,  C07C5/48 ,  C07C5/18

    Abstract: Process for manufacturing styrene, by catalytic dehydrogenation of ethylbenzene with oxygen or gases containing molecular oxygen in the presence of water vapor in a fluid bed at temperatures between 350 and 600º c, by the use of solid catalysts and regeneration of these catalysts by combustión, characterized by that the catalyst is regenerated by incompletely burning the carbonaceous deposits with oxygen or gases containing molecular oxygen only to such an extent that on average it contains during the transformation between 1 and 30% by weight, based on the catalyst, of said carbonaceous deposits. (Machine-translation by Google Translate, not legally binding)

    6.
    发明专利
    未知

    公开(公告)号：DE2210283A1

    公开(公告)日：1973-09-20

    申请号：DE2210283

    申请日：1972-03-03

    Applicant: BASF AG

    Inventor： PETERSEN HARRO DR ,  RUEMENS WILHELM DR ,  BILLE HEINZ DR ,  REUSS GUENTER DR

    IPC: D06M15/00 ,  C08G12/12 ,  D01H13/30 ,  D06M15/423 ,  D06M101/00 ,  D06M101/02 ,  D06M101/06 ,  D06M101/08 ,  C08G9/10

    Abstract: 1415206 Textile-treating urea-formaldehydeglyoxal resins BADISCHE ANILIN- & SODAFABRIK AG 2 March 1973 [3 March 1972] 10214/73 Headings C3R and C3P [Also in Divisions D1-D2] A textile-treating resin is obtained by condensing urea with formaldehyde in a 1 : 2-10 molar ratio in aqueous solution at pH 7-10 and 20-80‹ C. for 0À5-4 hours, then at pH 31-5 and 20-100‹ C. until 5 drops of the solution produce turbidity in 10 ml. of 50% aqueous MgSO 4 .7H 2 O, then adding urea, glyoxal and optionally formaldehyde and heating at pH 5-7 and 20-60‹ C. for 1-6 hours, the final molar ratio of urea : formaldehyde : glyoxal being 1 : 1À5-2À5 : 0À3-0À6. In Examples 1-4 initial condensates of U : F ratio 1 : 4 are acidified with H 2 SO 4 or H.COOH to pH 3À5 to 4À8, heated at 35-90‹ C. for 20 mins to 4 hours and neutralized with NaOH; urea and glyoxal (and in Ex. 4 formalin) are added and the mixture heated at 50-55‹ C. for 3-4 hours; the U : F : G ratios of the products are 1 : 2-2À24 : 0À4-0À5. In Examples 5-7 cotton fabrics are treated with aqueous compositions containing the product of Ex. 2 or 3 and MgCl 2 alone or with a polyethylene emulsion or polyvinyl acetate/ starch mixture.

    8.
    发明专利
    未知

    公开(公告)号：CH598293A5

    公开(公告)日：1978-04-28

    申请号：CH73475

    申请日：1975-01-22

    Applicant: BASF AG

    Inventor： KERBECK ALFRED ,  LUECKE EBERHARD DR ,  RENAUER ERICH DR ,  REUSS GUENTER DR

    IPC: C08G12/00 ,  C08G12/04 ,  C08G12/10 ,  C08G12/22 ,  C08G12/40 ,  D21H17/49 ,  C08G12/02

    Abstract: 1489656 Paper-treating aminoplast resins BASF AG 24 Jan 1975 [25 Jan 1974] 3118/75 Heading C3R [Also in Divisions D1-D2] A condensation product is prepared in a single step reaction by mixing together (a) a neutralization product of pH 6-8 obtained from at least one carboxylic acid of pK 2 value at least 3À5 and ammonia and/or at least one C 1-5 primary alkyl amine, (b) 0À8-1À4 mols per carboxyl group in (a) of urea or an equivalent amount of another carbonamide, (c) 0À8-1À4 mols per carboxyl group in (a) of dicyandiamide, and (d) 3À2-4À5 moles of formaldehyde per mole of dicyandiaamide, and, after the reaction mixture has reached its highest temperature (due to the spontaneous reaction) and a constant pH, heating it at 70-100‹ C. for 0À5-5 hours. Suitable acids for (a) are C 1-5 alkane monocarboxylic acids; suitable amides (b) are formamide, acetamide, urea, alkyl- and dialkylureas, and urethanes. In Examples 1-4 a solution of 1 mole of urea and 0À75-1À25 moles of ammonia is brought to pH 7 with formic acid, then 1 mole of dicyandiamide and 3À5-4À2 moles of formalin are added; the pH becomes 5 and the mixture is heated for 0À15-5 hours, then neutralized with NaOH. In Example 5 2 moles of formamide or acetamide are used instead of the urea in a similar process. The products may be used as solutions or be spray dried. Uses.-Dye fixing agents and sizes for paper.

Patent Agency Ranking