2,4-Di-t-butyl-4-methylphenol → Styrene-butadiene-styrene

HRID 66391

Reaction equation

HRID 66391 reaction equation
[C:1]([C:5]1[CH2:10][C:9](C(C)(C)C)(C)[CH:8]=[CH:7][C:6]=1O)(C)(C)[CH3:2]>C1(C)C=CC=CC=1.C(O)(C)C>[CH2:2]=[CH:1][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1.[CH2:2]=[CH:1][CH:5]=[CH2:6].[CH2:2]=[CH:1][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1

Participants

3

Reactant 1

HCID 666433042,4-Di-t-butyl-4-methylphenol

Product 1

HCID 22280236Styrene-butadiene-styrene

Reagents, catalysts & solvents 1

HCID 21881414Toluene isopropyl alcoholSolvent

Procedure

Following the completion of Step III, 2,4-di-t-butyl-4-methylphenol (one part by weight per hundred parts of total monomers) was added as a 10 weight percent solution in 50/50 (by volume) toluene/isopropyl alcohol, and the polymer recovered by adding the polymerization mixture to isopropyl alcohol. The coagulated polymer was collected by filtration and dried under reduced pressure. Physical properties of the butadiene/styrene teleblock polymer prepared by this procedure are shown in Table I.

Workup

  1. customthe polymer recovered
  2. additionby adding the polymerization mixture to isopropyl alcohol
  3. filtrationThe coagulated polymer was collected by filtration
  4. customdried under reduced pressure
  5. customPhysical properties of the butadiene/styrene teleblock polymer prepared by this procedure

Sources & evidence

ORD record
ord-a2e23f37504149c3bd39beb3611b2db2
Source dataset
uspto-grants-1978_12
Patent number
US04131725

Linked notes

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