Sulfuric Acid → HCID 19083679, 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.[CH2:14]=[CH:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.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.[CH2:14]=[CH:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1Participants
Procedure
70 parts by mass of p-t-butoxystyrene and 10 parts by mass of styrene 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 to p-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 p-hydroxystyrene/styrene copolymer (hereinafter referred to as “resin (AR-1)”). The resin (AR-1) was analyzed in the same manner as in Production Example 1. The resin (AR-1) had a content of the structural unit (a2) derived from p-hydroxystyrene of 80 mol % and a content of the structural unit (a3-1) derived from styrene of 20 mol %. The resin (AR-1) had a polystyrene-reduced weight average molecular weight of 32,000.
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-5624263a115e4434975266c9390a87e2
- Source dataset
- uspto-grants-2013_06
- Patent number
- US08455173B2
Reaction notes
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