中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

20 records (took 0.021 seconds)

    Density measuring apparatus, with plurality of pivoted float indicators of differing buoyancies
    1.
    发明授权
    Density measuring apparatus, with plurality of pivoted float indicators of differing buoyancies 失效
    密度测量装置，具有不同浮力的多个枢轴浮子指示器

    公开(公告)号：US3908467A

    公开(公告)日：1975-09-30

    申请号：US41830673

    申请日：1973-11-23

    Applicant: BASF AG

    Inventor： SCHWEN ROLAND ,  WEBER THEODOR

    IPC: G01N9/16 ,  G01N9/00

    CPC classification number: G01N9/16

    Abstract: Density-measuring apparatus particularly adapted for measuring aqueous antifreeze solutions, in which the density-dependent coefficient of expansion of the liquid material is taken into account over the desired measuring range by the use of more than one buoyant element.

    Abstract translation: 特别适用于测量含水防冻溶液的密度测量装置，其中通过使用多于一种浮力元件在所需测量范围内考虑到液体材料的密度依赖性膨胀系数。

    Production of oxyalkylation products
    5.
    发明专利
    Production of oxyalkylation products 未知

    公开(公告)号：GB1046795A

    公开(公告)日：1966-10-26

    申请号：GB3223963

    申请日：1963-08-15

    Applicant: BASF AG

    Inventor： DREHER ERICH ,  SCHWEN ROLAND

    IPC: C07B61/00 ,  C07C41/02 ,  C07C41/03 ,  C07C69/76 ,  C08G65/26

    Abstract: An organic compound which is liquid under normal conditions and contains an active hydrogen atom is allowed to trickle down a tower packing in a reactor at between 20 DEG and 200 DEG C. and is simultaneously treated with an alkylene oxide and a catalyst at a pressure which is less than the liquifaction pressure of the alkylene oxide at the temperature used. The reactor may be a vertical tube of which the cross-section is less than the height. It may be either conical or telescopic in shape, being narrower at the top than at the bottom. The temperature at the top may be lower than that of the remainder and the pressure may be 6-60 atmospheres. The organic liquid may be introduced at the top of the tower through a distributer plate. Organic liquids specified are: alkanols having 1-30 carbon atoms, phenol, cresols, ethylene glycol, 1.2-propylene glycol, polyalkylene glycols, glycerol, sorbitol, carboxylic acids, and primary and secondary amines. The alkylene oxide may also be introduced at the top of the tower and may be diluted with an inert gas, e.g. N2. Alkylene oxides specified are: ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide and 2,3-butylene oxide. Catalysts specified are: NaOH, KOH, LiOH, Na2CO3, NaHCO3, oxalic acid, H2SO4, boron trioxide, aluminium oxide and silicic acid gel. The catalyst may form part of the packing. The products may be discharged through a separator at the bottom of the tower or products of differing degrees of oxyalkylation may be withdrawn at different levels of the tower. Oxyalkylation degrees of 1-50 may be achieved. A plurality of reactors may be linked one above the other or side-by-side with the interposition of pumps. In a typical Example (1) tridecanol is treated with ethylene oxide in the presence of NaOH.ALSO:An organic liquid having an active hydrogen atom is run down a tower packing at 20-200 DEG C. and simultaneously treated with an alkylene oxide and a catalyst at a pressure below the liquifaction pressure of the alkylene oxide. The reactor may be a vertical tube having a diameter less than its height. and may be either conical or telescopic in shape, being narrower at the top. The temperature at the top may be less than that of the remainder of the tower and the pressure may be 6-60 atmospheres. The organic liquid may enter at the top of the tower through a distributer plate. Liquids specified are: C1- 30 alkanols, phenol, cresols, ethylene glycol, 1,2-propylene glycol, polyalkylene glycols, glycerol, sorbitol, carboxylic acids and primary and secondary amines. The alkylene oxide may also be introduced at the top of the tower and may be diluted with inert gas, e.g. N2. Alkylene oxides specified are: ethylene, 1,2-propylene, 1,2-butylene and 2,3-butylene oxides. Catalysts specified are: NaOH, KOH, LiOH, Na2CO3, NaHCO3 oxalic acid, H2SO4 boron trioxide, alumina, and silicic acid gel. The catalyst may form part of the packing. A plurality of towers may be linked by interpositioned pumps. The products may be discharged through a separator at the bottom of the tower or products of differing degrees of oxyalkylation may be withdrawn at different levels. Oxyalkylation degrees of 1-50 may be achieved.

    A method of inhibiting cavitation in high speed diesel engines
    9.
    发明专利
    A method of inhibiting cavitation in high speed diesel engines 未知

    公开(公告)号：GB1066333A

    公开(公告)日：1967-04-26

    申请号：GB3469463

    申请日：1963-09-03

    Applicant: BASF AG ,  DAIMLER BENZ AG

    Inventor： MUENSTER WILHELM ,  SCHWEN ROLAND ,  EITEL MAX

    IPC: C09K5/10 ,  C09K5/20 ,  C23F11/08 ,  C23F11/10 ,  F01P11/00 ,  F02B3/06

    Abstract: Cavitation in high speed diesel engine cooling systems is inhibited by circulating a cooling liquid comprising (a) water or an aqueous solution of a member of the group consisting of non-polymerized saturated aliphatic alcohols completely mixible in water in all proportions and (b) 0.1 to 10% by weight of the total, of a cavitation inhibiting organic compound, other than a member of the group of alcohols specified in (a), containing one or more hydrophilic groups and being at least partially soluble in component (a). When component (b) has a molecular weight below 1500 its solubility in (a) at 60-120 DEG C. must be 0.1 to 10% by weight. Component (a) may be a conventional anti-freeze solution containing 5 to 50% by weight of an alcohol containing 2 to 4 carbon atoms and 2 to 3 hydroxyl groups such as ethylene glycol, propanediol and glycerol. The hydrophilic groups of component (b) are hydroxyl groups, ether bridges, carboxylic acid amide groups, lactam groups, amino groups or carboxylate groups. Suitable organic compounds for (b) are polyalkylene glycols with 2 to 4 carbon atoms between the ether bridges preferably with molecular weights between 300 and 15,000; also compounds with a hydrocarbon structure containing 1 to 80 alkylene oxide groups (-CnH2nO-, where n is 2 to 4) or at least one of the hydrophilic groups formed as reaction products of e.g. ethylene oxide or propylene oxide with stearic amide, oleic acid monoethanulamide, caproamide, oleylamine, laurylamine, lauryl alcohol, capryl alcohol, stearyl alcohol, glycerol, caprolactam, laurolactam, polycaprolactam, polylaurolactam. Other compounds are polyesters of dicarboxylic acids, e.g. succinic acid, adipic acid, terephthalic acid with polyglycols; also polyvinylpyrrolidone, polyvinyl alcohol, protein such as bone glue and polysaccharides such as agar. Low molecular weight compounds are monohydric and dihydric alcohols with 6 to 20 carbon atoms, e.g. octanol-(2), 2-ethyl hexanol, lauryl alcohol, palmityl alcohol, stearyl alcohol, tridecanol. The cooling liquid may also contain 0.01 to 5% by weight of corrosion inhibitors such as borates, phosphates, alkali benzoates, nitrites, triethanolamine phosphate.ALSO:Cavitation in high speed diesel engine cooling systems is inhibited by circulating a cooling liquid comprising (a) water or an aqueous solution of a member of the group consisting of non polymerized saturated aliphatic alcohols completely mixable in water in all proportions and (b) 0.1 to 10% by weight of the total, of a cavitation inhibiting organic compound, other than a member of the group of alcohols specified in (a), containing one or more hydrophilic groups and being a least partially soluble in component (a). When component (b) has molecular weight below 1500 its solubility in (a) at 60 DEG -120 DEG C, must be 0.1 to 10% by weight. Component (a) may be a conventional anti-freeze solution containing 5 to 50% by weight of an alcohol containing 2 to 4 carbon atoms and 2 to 3 hydroxyl groups such as ethylene glycol, propanediol and glycerol. The hydrophilic groups of component (b) are hydroxyl groups, ether bridges, carboxylic acid amide groups, lactam groups, amino groups or carboxylate groups. Suitable organic compounds for (b) are polyalkylene glycols with 2 to 4 carbon atoms between the ether bridges preferably with molecular weights between 300 and 15,000; also compounds with a hydrocarbon structure containing 1 to 80 alkylene oxide groups (-Cn H2n O - , where n is 2 to 4) or at least one of the hydrophilic groups formed as reaction products of e.g. ethylene oxide or propylene oxide with stearic amide, oleic acid monoethanulamide, caproamide, oleylamine, laurylamine, lauryl alcohol, capryl alcohol stearyl alcohol, glycerol, caprolactam, laurolactam, polycaprolactam, polylaurolactam. Other compounds are polyesters of dicarboxylic acids e.g. succinnic acid, adipic acid terephthalic acid with polyglycols; also polyvinylpyrrolidone, polyvinyl alcohol, protein such as bone glue and polysaccharides such as agar. Low molecular weight compounds are monohydric and dihydric alcohols with 6 to 20 carbon atoms e.g. octanol - (2), 2-ethyl hexanol, lauryl alcohol, palmityl alcohol, stearyl alcohol, tridecanol. The cooling liquid may also contain 0.01% to 5% by weight of corrosion inhibitors such as borates, phosphates, alkali benzoates, nitrites triethanolamine phosphate.

Patent Agency Ranking