Sulfuric Acid → HCID 86655423, compound
Reaction equation
C([O:5][C:6]1[CH:13]=[CH:12][C:9]([CH:10]=[CH2:11])=[CH:8][CH:7]=1)(C)(C)C.[CH:14]([O:16][CH2:17][CH3:18])=[CH2:15].N(C(C)(C)C#N)=NC(C)(C)C#N.S(=O)(=O)(O)O.OC1C=CC(C=C)=CC=1>COCC(O)C.C(OCC)(=O)C>[OH:5][C:6]1[CH:13]=[CH:12][C:9]([CH:10]=[CH2:11])=[CH:8][CH:7]=1.[CH:14]([O:16][CH2:17][CH3:18])=[CH2:15]Participants
Procedure
p-t-butoxystyrene and ethyl vinyl ether (100 parts by mass in total (molar ratio: 60:40)) were dissolved in 150 parts by mass of propylene glycol monomethyl ether. The mixture was polymerized at 70° C. for 10 hours in a nitrogen atmosphere in the presence of 4 parts by mass of azobisisobutyronitrile. After the addition of sulfuric acid to the reaction solution, the components were reacted at 90° C. for 10 hours to convert (deprotect) p-t-butoxystyrene into 4-hydroxystyrene. After the addition of ethyl acetate to the resulting copolymer, the mixture was washed five times with water. After isolating the ethyl acetate phase, the solvent was removed to obtain a random copolymer (4-hydroxystyrene/ethyl vinyl ether copolymer) (hereinafter referred to as “copolymer (AR-1)”). The copolymer (AR-1) was analyzed in the same manner as in Production Example 1. The copolymer (AR-1) had a content of the structural unit (ar1) derived from 4-hydroxystyrene of 60 mol %, and a content of the structural unit (ar2) derived from ethyl vinyl ether of 40 mol %. The copolymer (AR-1) had a polystyrene-reduced weight average molecular weight of 30,000, and a molecular weight distribution of 3.5.
Workup
- customthe components were reacted at 90° C. for 10 hours
- washthe mixture was washed five times with water
- customAfter isolating the ethyl acetate phase
- customthe solvent was removed
Sources & evidence
- ORD record
- ord-834b7aa651fe41a09ee71eb08706cba1
- Source dataset
- uspto-grants-2012_08
- Patent number
- US08247481B2
Reaction notes
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