BUILDERS FOR DETERGENT AND CLEANSING AGENTS

    公开(公告)号:CA1010058A

    公开(公告)日:1977-05-10

    申请号:CA152135

    申请日:1972-09-20

    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.

    PROCESS FOR THE MANUFACTURE OF VINYL ACETATE

    公开(公告)号:GB1209125A

    公开(公告)日:1970-10-21

    申请号:GB1297669

    申请日:1969-03-12

    Abstract: 1,209,125. Vinyl acetate. FARBENFABRIKEN BAYER A.G., and FARBWERKE HOECHST A.G. 12 March, 1969 [15 March, 1968], No. 12976/69. Heading C2C. Vinyl acetate is prepared by reacting ethylene, acetic acid and molecular oxygen or air in the gas phase at elevated temperature in contact with a catalyst comprising metallic ruthenium, rhodium, palladium, osmium, iridium or platinum supported on a carrier and further comprising one or more alkali metal or alkaline earth metal acetates, or alkali metal or alkaline earth metal compounds capable of forming acetates and in which the acetic acid contains up to 20% of formic acid. The formic acid may be present in the acetic acid obtained as a primary product in hydrocarbon oxidation processes or as a byproduct in epoxidation processes using peracetic acid. Additional activating metals such as copper, silver, gold, zinc, cadmium, tin, lead, chromium, molybdenum, tungsten, manganese, iron, cobalt, or nickel may be present.

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