Alpha-Methylstyrene → HCID 86656477, compound

HRID 1024138Notes

Reaction equation

HRID 1024138 reaction equation
[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:3].[C:10]([C:14]1[CH:22]=[CH:21][C:17]([C:18]([CH3:20])=[CH2:19])=[CH:16][CH:15]=1)([CH3:13])([CH3:12])[CH3:11]>>[CH3:3][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:1].[C:10]([C:14]1[CH:15]=[CH:16][C:17]([C:18]([CH3:20])=[CH2:19])=[CH:21][CH:22]=1)([CH3:13])([CH3:11])[CH3:12]

Participants

3

Reactant 2

HCID 7407Alpha-Methylstyrene2×HCID 15354263HCID 15354263, compound

Product 1

HCID 86656477HCID 86656477, compound

Conditions

Temperature
5.5 °C

Procedure

A resin R-2a is prepared in a manner similar to that of preparing the resin B-2a, except that 8 g of α-methylstyrene and 72 g of 4-tert-butyl-α-methylstyrene are used in place of 80 g of 4, α-dimethylstyrene and that the dropwise dropwise addition of the catalyst is carried for 15 minutes and the polymerization reaction is allowed to proceed for 30 minutes in a state where the temperature of the reaction mixed solution is maintained in the range of 5 to 6° C. The resin R-2a thus obtained (α-methylstyrene/4-tert-butyl-α-methylstyrene copolymer) has yield: 50 g, softening point: 180° C., number-average molecular weight (Mn): 1350, and weight-average molecular weight (Mw): 3900. The physical characteristics of the resins A-2a to R-2a are shown in Table 8.

Workup

  1. customA resin R-2a is prepared in a manner similar to that
  2. customof preparing the resin B-2a
  3. customthe polymerization reaction
  4. waitto proceed for 30 minutes in a state where
  5. additionthe temperature of the reaction mixed solution

Sources & evidence

ORD record
ord-004442f4b328494e82876f81cbaac382
Source dataset
uspto-grants-2014_05
Patent number
US08722806B2

Reaction notes

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