• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Die Erfindung betrifft ein Verfahren zur Herstellung einer stabilen, wäßrigen, elektrolythaltigen Celluloseäther-Suspension. Dabei wird ein an sich wasserlöslicher Celluloseäther in fester, kleinteiliger Form zu einer wäßrigen Elektrolytlösung unter gleichmäßiger Verteilung des Celluloseäthers zugesetzt. Die Celluloseäther sind vom nicht- ionogenen Typ, dazu zählen insbesondere Methylcellulosen, Alkyl-hydroxyalkyl-cellulosen und Hydroxyalkyl-cellulosen. Die stabile Suspension enthält außerdem Tonerde, ihr kann zusätzlich noch ein die Suspension stabilisierendes und ihre Viskosität verringerndes organisches Mittel zugesetzt werden. Eine bevorzugte Verwendung der erfindungsgemäß hergestellten Suspension ist die Herstellung von Celluloseäther enthaltenden Mischungen wie solchen auf der Basis von wasserhaltigen Baustoffen oder von Kunststoffdispersionsfarben, Kunststoffputzen oder Leimfarben.
    公开号:SU927124A3
    申请号:SU792729710
    申请日:1979-02-12
    公开日:1982-05-07
    发明作者:Гирг Фридрих；Книттель Фолькер
    申请人:Хехст Аг(Фирма)；
    IPC主号:
    专利说明:

    va acid, oleic alcohol, adduct of propylene oxide or ethylene with 2 O mol of ethylene oxide, tributylphenol, ethylene oxide, monoethylene glycol, oleylamine, isotridecyl alcohol, diethylene glycol, oleyl alcohol, vorpo1; mixtures, it is possible to further increase the durability of the suspension and reduce its viscosity. Examples 1–2 The corresponding electrolyte is dissolved in water and highly dispersed alumina is added to 1000 g of electrolyte solution or in the form of pyrolysis 97 AB “iOj, 0 , U TIQ ,, 0, n SiO, 0.2%, 0.5% of it), or tone erdegel type 1 (about kS% AEiiPg. about 11 SOj, 0.2 SiOn, about 0.05X 2. about 10 N (1.oG, or type 2 tonerdegel (about, about 12% SOg, about 0.2 SiOij, about 0.0, about 18 HijO) and evenly distributed in it by stirring. Then powdered cellulose ether is added and evenly distributed in this medium. After that (not in all examples) a stabilizing suspension is added and reducing it in Organic viscosity is evenly distributed in suspension by vigorous stirring. The sequence of the addition of glycerozoan, a simple cellulose ether and in this case an organic agent can be changed without significantly altering the stability of the suspension. Stable suspensions formed in this way can be referred to as low viscosity (i.e., with a Geppler viscosity of less than about 300, 3 Pa S at) or medium viscosity (i.e., with a Geppler viscosity of less than about 3000 Pa S at) . Low viscosity mixtures give examples 1, and 21-26, and medium mixtures give examples 2-k and 20. Viscosity values are measured by Geppler in an aqueous solution at 20 ° C. Examples 27-32 (comparative). For comparison, mixtures (persistent dispersions) with a high content of electrolyte (27-30) and mixtures (non-persistent dispersions) with a low electrolyte content (31 and 32) are obtained. A high electrolyte content gives persistent dispersions; however, the electrolyte content in certain applications can be a hindrance, a lower content without an additive according to the proposed method does not give persistent dispersions. The mixtures are respectively medium viscous.




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    权利要求:
    Claims (1)
    [1]
    (C "1-4 powdered cellulose ether into an aqueous electrolyte solution, characterized in that, to increase the stability of the suspension, methyloxy is used as the cellulose ether cellulose acetate, potassium acetate or magnesium as the electrolyte, and additionally suspended alumina or its gel in the following ratio of suspension components, weight,%: .. Magnesium sulphate Fine alumina or its gel 1- Water Else Sources of information taken into account in the examination 1. Application of Germany N 2 17086, cl. 80 B 105, Republican. 1976 (prototype).
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    同族专利:
    公开号 | 公开日
    EP0003582A2|1979-08-22|
    JPS54117558A|1979-09-12|
    DE2805907B2|1980-12-18|
    JPS6315302B2|1988-04-04|
    EP0003582A3|1980-04-16|
    US4283229A|1981-08-11|
    DE2961928D1|1982-03-11|
    DE2805907A1|1979-08-23|
    EP0003582B1|1982-01-27|
    AU4385679A|1979-08-23|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2805907A|DE2805907B2|1978-02-13|1978-02-13|Process for the production of a stable cellulose ether suspension and its use|
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