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    • 9. 发明公开
    • BIODEGRADABLE POLYORGANOSILOXANE DEMULSIFIER COMPOSITION AND METHOD FOR MAKING THE SAME
    • 可生物降解POLYORGANOSILOXANDEMULGATORZUSAMMENSETZUNG和方法生产同样
    • EP2723817A1
    • 2014-04-30
    • EP12738265.3
    • 2012-06-21
    • Momentive Performance Materials Inc.
    • PHUKAN, MonjitSAXENA, AnubhavDUBEY, Majyank, KumarPALUMBO, AntonioKOCZO, Kalman
    • C08L83/12
    • C08L83/12B01D17/047C08G77/46C10G33/04
    • [0095] There is provided herein a demulsifying composition comprising (a) an emulsion; and (b) a demulsifying-effective amount of at least one polyorganosiloxane compound having the general formula (I): M
      1 aM
      2 bD
      1 cD
      2 d T
      1 eT
      2 fQg (I) wherein: M
      1 = R
      1 R
      2 R
      3 SiO
      1/2 , M
      2 = R
      4 R
      5 RLSiO
      1/2 ,D
      1 = R
      6 R
      7 Si0
      2/2 ,D
      2 = R
      8 R
      L Si0
      2/2 , T
      1 = R
      9 Si0
      3/2 ,T
      2 = R
      L Si0
      3/2 ,Q = Si0
      4/2 , where R
      1 , R
      2 , R
      3 , R
      4 , R
      5 , R
      6 , R
      7 , R
      8 and R
      9 are each independently chosen from monovalent alkyl, aryl or aralkyl hydrocarbon radicals containing 1 to 60 carbon atoms, optionally containing at least one heteroatom, or chosen from R
      p ; R
      P is a monovalent polyether radical independently of the general formula (II): - (C
      n H
      2n )-0-(C
      2 H
      4 0)
      o- (C
      3 H
      6 O)
      p- (C
      4 H
      8 O)
      q -R
      10 (II) where R10 is hydrogen or a monovalent alkyl radical containing from 1 to about 20 carbon atoms or an acyl group; subscripts a, b, c, d, e, f and g are zero or positive integers, subject to the limitations: 2≤ a+b+c+d+e+f+g≤500, b+d+f >1 and a+b=2+e+f+2g; subscript n is 2 to about 10; subscript o is 0 to about 200; subscript p is 0 to about 200; subscript q is 0 to about 200; and, subject to the limitation o+p+q≥1; R
      L is a monovalent radical independently chosen from the general formula (III): -X-0-(C
      2 H
      4 O)-(C
      3 H
      6 O)
      s- (C
      4 H
      8 O)
      t- {C(0)C
      u H
      2u O}
      v -R
      11 (III) where R
      11 is hydrogen or monovalent alkyl radical containing from 1 to about 20 carbon atoms or an acyl group, and where X is a linear, branched or cyclic divalent hydrocarbon or aralkyl radical containing from 21 to about 20 carbon atoms, optionally containing at least one heteroatom; subscript r is 0 to about 200; subscript s is 0 to about 200; subscript t is 0 to about 200; subscript u is 1 to about 20; subscript v is 1 to about 200, and subject to the limitation if r+s+t is equal to zero then the polyorganosiloxane contains at least one R
      P radical. There is also provided herein a method for separating emulsions comprising combining the components of the demulsification composition into a mixture; allowing the mixture to separate into at least two phases and separating said at least two phases from each other.