Styrene → HCID 131715186, compound

HRID 652798Notes

Reaction equation

HRID 652798 reaction equation
[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:5]=[CH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:5]=[CH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:1]=[CH:2][CH:3]=[CH2:4]

Participants

3

Reactant 2

HCID 7501Styrene2×HCID 78451,3-Butadiene3×

Product 1

HCID 131715186HCID 131715186, compound

Procedure

Polymerization was conducted in the same manner as in Reference Example 11, except that 50 g of 1,3-butadiene, 75 g of styrene, 300 g of 1,3-butadiene and 75 g of styrene were added in this order. Finally, 50 g of 1,3-butadiene was further added and polymerization was conducted for 30 minutes. The resulting polymer solution was treated in the same manner as in Reference Example 11 to obtain a butadiene-styrene-butadiene-styrene-butadiene block copolymer having a bound styrene content of 30%, a block styrene content of 27% and a 1,2-vinyl content in the butadiene units of 38% (27% based on the weight of the entire block copolymer) and having a number average molecular weight of about 60,000.

Workup

  1. customPolymerization
  2. additionwere added in this order
  3. custompolymerization
  4. additionThe resulting polymer solution was treated in the same manner as in Reference Example 11

Sources & evidence

ORD record
ord-00566085cec04eb6b139bcc060b0ef84
Source dataset
uspto-grants-1987_06
Patent number
US04673714

Reaction notes

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