N-vinyl-2-pyrrolidone → 2-Eha heaa

HRID 1808660Notes

Reaction equation

HRID 1808660 reaction equation
C(OCC(CC)CCCC)(=O)C=C.[CH3:14][CH2:15][CH2:16][CH2:17][CH:18]([C:21]([OH:23])=[O:22])[CH2:19][CH3:20].[OH:24][CH2:25][CH2:26][NH:27][C:28](=[O:31])[CH:29]=[CH2:30].C(N1CCCC1=O)=C>C(OCC)(=O)C>[CH3:14][CH2:15][CH2:16][CH2:17][CH:18]([C:21]([OH:23])=[O:22])[CH2:19][CH3:20].[CH2:30]=[CH:29][C:28]([NH:27][CH2:26][CH2:25][OH:24])=[O:31]

Participants

6

Reactant 4

HCID 6917N-vinyl-2-pyrrolidoneHCID 76362-Ethylhexyl acrylateHCID 86972-Ethylhexanoic AcidHCID 193628N-(2-Hydroxyethyl)acrylamide (stabilized with MEHQ)2×

Product 1

HCID 1317301742-Eha heaa

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

First, 70 parts by weight of 2-ethylhexyl acrylate (which may hereinafter be referred to as “2-EHA”) as the monomer (a), 10 parts by weight of N-hydroxyethylacrylamide (which may hereinafter be referred to as “HEAA”) as the monomer (b), 20 parts by weight of N-vinyl-2-pyrrolidone (which may hereinafter be referred to as “N-VP”) as the monomer (c), and 333.3 parts by weight of ethyl acetate as a solvent were loaded into a reaction vessel provided with a cooling tube, a nitrogen gas-introducing tube, a temperature gauge, a dropping funnel, and a stirring machine, and then the contents were stirred at room temperature for 1 hour while nitrogen gas bubbling (100 mL/min) was performed. After that, the contents in the reaction vessel were heated, and 0.2 part by weight of 2,2′-azobisisobutyronitrile (AIBN) as a polymerization initiator was added when the temperature of the contents reached 60° C. Such control that the temperature of the contents was kept at 60° C. was performed, and then polymerization was performed in a stream of a nitrogen gas for 6 hours. Next, the temperature was held at 76° C. for 15 hours. A solution of an acrylic copolymer (2-EHA/HEAA/N-VP=70/10/20) was obtained by solution polymerization based on the above-mentioned system.

Workup

  1. customwere loaded into a reaction vessel
  2. customprovided with a cooling tube, a nitrogen gas-introducing tube
  3. custombubbling (100 mL/min)
  4. temperatureAfter that, the contents in the reaction vessel were heated
  5. addition0.2 part by weight of 2,2′-azobisisobutyronitrile (AIBN) as a polymerization initiator was added when the temperature of the contents
  6. customreached 60° C
  7. customwas kept at 60° C.
  8. custompolymerization
  9. waitwas performed in a stream of a nitrogen gas for 6 hours
  10. waitNext, the temperature was held at 76° C. for 15 hours

Sources & evidence

ORD record
ord-aa96b0c2363a41d1890eed753999b756
Source dataset
uspto-grants-2013_01
Patent number
US08361493B2

Reaction notes

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