6.
    发明专利
    未知

    公开(公告)号:SE372517B

    公开(公告)日:1974-12-23

    申请号:SE1388671

    申请日:1971-11-01

    Applicant: HOECHST AG

    Abstract: 1318689 Glycerol di- and tri-acetates KNAPSACK AG 2 Nov 1971 [14 Nov 1970] 50882/71 Heading C2C Glycerol triacetate and glycerol diacetate are prepared by reacting a solution of allyl acetate in acetic acid containing between 1À5 and 15 wt. per cent of acetaldehyde with a mixture of molecular oxygen and inert gas, (e.g. N 2 , carbon oxides), at 30-250‹ C. and 1-200 ats. absolute in the absence of catalysts. The acetic acid solution preferably contains 0À1-1À0 moles of acetaldehyde per mole of allyl acetate. The glycerol acetates may be hydrolysed by conventional methods to yield pure glycerol and the reaction may be carried out continuously.

    8.
    发明专利
    未知

    公开(公告)号:DK139438C

    公开(公告)日:1979-07-16

    申请号:DK470872

    申请日:1972-09-22

    Applicant: HOECHST AG

    Abstract: 1397957 Detergents containing builders HOECHST AG 14 Sept 1972 [24 Sept 1971] 42706/72 Heading C5D [Also in Division C2] Builders for detergent and cleansing agents comprise water-soluble salts of acid carboxylic acid esters prepared by reacting at least trivalent, 6-10C, aliphatic olefinically unsaturated carboxylic acids or hydroxy-carboxylic acids with aliphatic alcohols (3-6 OH groups), and in which each hydroxylic group of the alcohol and optionally the hydroxycarboxylic acid is esterified with a carboxylic acid molecule. Citric, aconitic, tricarballylic, dihydroxy-tricarballylic, nitrotriacetic and ethylenediamine-tetracetic acids may be used with glycerol, erythritol, pentaerythritol, mannitol, sorbitol or sugar alcohol (4-6 C) and the salts are of alkali metal or ammonium ion. A proportion of 10-80% by weight of salts may be used and then ion-active and/or non-ionic tensides and further conventional additives may be present. Examples describe the use of builders prepared from glycerol, sorbitol or pentaerythritol with nitric acid used with dodecylbenzene sulphonate, tallow fatty alcohol and hardened tallow soap, and also with additional magnesium silicate, sodium silicate, sodium perborate, sodium sulphate and tylose in detergent wash liquors.

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