Solvents useful in the preparation of polymers containing hydrophilic and hydrophobic monomers
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Abstract
This invention relates to solvents which may be used to extract polymers that are made of hydrophilic and hydrophobic monomers
20 Citations
27 Claims
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1-11. -11. (Cancelled)
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12. A method of releasing and extracting cured polymers comprising hydrophobic and hydrophilic monomers, where the method comprises the steps of treating the cured polymer with an a liquid extracting solvent, wherein said extracting solvent when measured at 25°
- C.
(a) swells the cured polymer to at least about 15%, and (b) has Hansen Solubility Parameters within the ranges of δ
H=about [δ
Hcured polymer+2.5] to about [δ
Hcured polymer−
8.5]δ
P=about [δ
Pcured polymer+0.5] to about [δ
Pcured polymer−
4.0] andδ
D=about [δ
Dcured polymer+2.5] to about [δ
Dcured polymer−
2.0]. - View Dependent Claims (15, 21, 22, 26)
- C.
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13-14. -14. (Cancelled)
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16-20. -20. (Cancelled)
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23. A polymer that is prepared by a method of extracting cured polymers comprising hydrophobic and hydrophilic monomers, where the method comprises the steps of treating the cured polymer with a liquid extracting solvent, wherein said extracting solvent when measured at 25°
- C.
(a) swells the cured polymer from about 0% to about 50% and (b) has Hansen Solubility Parameters within the ranges of δ
H=about [δ
Hcured polymer+2.5] to about [δ
Hcured polymer−
8.5]δ
P=about [δ
Pcured polymer+0.5] to about [δ
Pcured polymer−
4.0] andδ
D=about [δ
Dcured polymer+2.5] to about [δ
Dcured polymer−
2.0].
- C.
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24-25. -25. (Cancelled)
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27-31. -31. (Cancelled)
Specification