Diethylenetriaminepentaacetic acid → HCID 20266241, compound

HRID 1248464Notes

Reaction equation

HRID 1248464 reaction equation
[C:1]([NH2:5])(=[O:4])[CH:2]=[CH2:3].C(N(CC(O)=O)CCN(CC(O)=O)CC(O)=O)CN(CC(O)=O)CC(O)=O.CCCCCCCC/C=C\CCCCCCCC(OCC(O)[C@H]1OC[C@H](O)[C@H]1O)=O.C(O)(=O)CCCCCCC/C=C\CCCCCCCC.[C:83]([O:88][CH2:89][CH2:90][CH2:91][CH2:92][CH2:93][CH2:94][CH2:95][CH2:96][CH2:97][CH2:98][CH2:99][CH3:100])(=[O:87])[C:84]([CH3:86])=[CH2:85]>O>[C:1]([NH2:5])(=[O:4])[CH:2]=[CH2:3].[C:83]([O:88][CH2:89][CH2:90][CH2:91][CH2:92][CH2:93][CH2:94][CH2:95][CH2:96][CH2:97][CH2:98][CH2:99][CH3:100])(=[O:87])[C:84]([CH3:86])=[CH2:85]

Participants

7

Reactant 5

HCID 3053Diethylenetriaminepentaacetic acidHCID 6579AcrylamideHCID 8906Lauryl MethacrylateHCID 445639Oleic AcidHCID 70693544Span #80 (Sorbitan monooleate)

Product 1

HCID 20266241HCID 20266241, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent3×

Procedure

A water-in-oil emulsion of an acrylamide/dodecyl methacrylate copolymer is prepared by first dispersing 112.5 g of acrylamide and 0.09 g of the pentasodium salt of diethylenetriaminepentaacetic acid in 166.5 g of water to form the aqueous phase. The oil phase is made by dissolving 2.25 g of sorbitan monooleate, 3.3 g of isopropanolamide of oleic acid, and 12 g of dodecyl methacrylate in 103.2 g of Isopar® M (a liquid hydrocarbon). The aqueous phase is then added to the oil phase in a Waring blender operating at its highest speed. The resulting water-in-oil emulsion is transferred to a 500-ml resin pot equipped with an agitator and a N2 purge tube. After the pot is purged with nitrogen for one hour, 1 g of a 10 percent solution of diisopropyl peroxydicarbonate in Isopar® M, a preferred oil-soluble initiator is added to the emulsion at 20° C. while continuing the nitrogen purge and agitation of the emulsion. The temperature of the emulsion rises to 50° C. in 20 minutes and is maintained in the range of 40° C.-50° C. during the remainder of the polymerization (i.e., about 4 hours). The resulting water-in-oil emulsion of acrylamide/dodecyl methacrylate copolymer (32.5 percent polymer solids) is recovered from the resin pot.

Workup

  1. customto form the aqueous phase
  2. additionThe aqueous phase is then added to the oil phase in a Waring blender operating at its highest speed
  3. custompot equipped with an agitator
  4. customa N2 purge tube
  5. customAfter the pot is purged with nitrogen for one hour
  6. addition1 g of a 10 percent solution of diisopropyl peroxydicarbonate in Isopar® M, a preferred oil-soluble initiator is added to the emulsion at 20° C.
  7. custompurge
  8. temperatureis maintained in the range of 40° C.-50° C. during the remainder of the polymerization (i.e., about 4 hours)
  9. customThe resulting water-in-oil emulsion of acrylamide/dodecyl methacrylate copolymer (32.5 percent polymer solids) is recovered from the resin pot

Sources & evidence

ORD record
ord-9df2d03b67114406bd0540b61be306d2
Source dataset
uspto-grants-1985_06
Patent number
US04524175

Reaction notes

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