Claims
- 1. A method for preparing a pourable concentrated polymer/emulsifying surfactant/hydrophobic liquid composition from a starting dehydrated polymer/emulsifying surfactant/hydrophobic liquid composition, which method consists essentially of removing some portion of hydrophobic liquid from said starting dehydrated polymer/emulsifying surfactant/hydrophobic liquid composition in a first centrifuge, thereby producing a pourable concentrated polymer/emulsifying surfactant/hydrophobic liquid composition and a first centrifuge raffinate; wherein said polymer is a water soluble polymer prepared from one or more ethylenically unsaturated monomers and wherein said pourable concentrated polymer/emulsifying surfactant/hydrophobic liquid composition contains less than about 5%, by weight, water and greater than about 60%, by weight, polymer solids.
- 2. The method of claim 1, wherein said starting dehydrated polymer/emulsifying surfactant/hydrophobic liquid composition contains less than about 3% water.
- 3. The method of claim 2, wherein said starting composition contains between about 0.1 and about 2.5% water.
- 4. The method of claim 1, wherein said centrifuge is a decanter centrifuge.
- 5. The method of claim 3, wherein said centrifuge is a decanter centrifuge.
- 6. The method of claim 1, wherein said centrifuge raffinate is centrifuged in a second centrifuge, thereby producing a second concentrated polymer composition and a second raffinate.
- 7. The method of claim 4, wherein said centrifuge raffinate is centrifuged in a second centrifuge, thereby producing a second concentrated polymer composition and a second raffinate.
- 8. The method of claim 6, wherein said second concentrated polymer composition is blended with said, concentrated polymer/emulsifying surfactant/hydrophobic liquid composition.
- 9. The method of claim 7, wherein said second concentrated polymer composition is blended with said, concentrated polymer/emulsifying surfactant/hydrophobic liquid composition.
- 10. The method of claim 6, wherein said second centrifuge is a disc centrifuge.
- 11. The method of claim 7, wherein said second centrifuge is a disc centrifuge.
- 12. The method of claim 1, which additionally comprises adding an effective amount of a settling or compaction stabilizer to said pourable concentrated polymer/emulsifying surfactant/hydrophobic liquid composition.
- 13. The method of claim 1, wherein said starting dehydrated polymer/emulsifying surfactant/hydrophobic liquid composition does not contain an inverting surfactant.
- 14. A method for preparing a pourable, concentrated polymer/emulsifying surfactant/hydrophobic liquid composition from a starting dehydrated polymer/emulsifying surfactant/hydrophobic liquid composition, which method comprises: a) removing some portion of hydrophobic liquid from said starting dehydrated polymer/emulsifying surfactant/hydrophobic liquid composition in a first centrifuge, thereby producing a pourable concentrated polymer/emulsifying surfactant/hydrophobic liquid composition and a first centrifuge raffinate; and b) centrifuging said first centrifuge raffinate in a second centrifuge to capture additional polymer solids.
Parent Case Info
This is a continuation, of application Ser. No. 07/993,800 filed Dec. 21, 1992 now abandoned.
US Referenced Citations (5)
Non-Patent Literature Citations (2)
Entry |
Chem. Abstracts, vol. 98, No. 26, Jun. 27, 1983, Abs. No. 216505q Water Absorbing Polymers Powder, p. 36. |
Kirk-Othmer, Concise Encyclopedia of Chemical Technology, Wiley & Sons, New York, NY, 1985, p. 235. |
Continuations (1)
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Number |
Date |
Country |
Parent |
993800 |
Dec 1992 |
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