4,4'-Dihydroxybiphenyl → 4-Hydroxybenzoic Acid

HRID 475689

Reaction equation

HRID 475689 reaction equation
[OH:1]C1C=CC(C2C=CC(O)=CC=2)=CC=1.C(O)(=O)CCCC[CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][C:26]([OH:28])=[O:27]>>[OH:1][C:22]1[CH:21]=[CH:20][C:25]([C:26]([OH:28])=[O:27])=[CH:24][CH:23]=1

Participants

3

Reactant 2

HCID 71124,4'-Dihydroxybiphenyl3×HCID 12736Dodecanedioic Acid2×

Product 1

HCID 1354-Hydroxybenzoic Acid

Procedure

Polymerization was carried out in the same way as Example 1, except that (A) preparing materials were changed to 4,4′-dihydroxybiphenyl, dodecanedioic acid, 4-hydroxybenzoic acid, acetic anhydride, and (B) a mixture of 4,4′-dihydroxybiphenyl, dodecanedioic acid, 4-hydroxybenzoic acid, acetic anhydride at a molar ratio of 1.05:1:2:4.1 in which 4,4′-dihydroxybiphenyl was excess by 5 mol % was prepared in a reactor vessel, thereby producing a thermoplastic resin in which 4-hydroxybenzoic acid was copolymerized with the resin of Example 1. A molecular structure, sealed end groups, and a sealing rate of ends are shown in Table 2, and changes in number average molecular mass and thermal conductivity before and after melting are shown in Table 3.

Workup

  1. customPolymerization
  2. customwas prepared in a reactor vessel

Sources & evidence

ORD record
ord-85734ecb7a8a4e57a35f03491fc78cc1
Source dataset
uspto-grants-2014_01
Patent number
US08637630B2

Linked notes

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