Formaldehyde → Formaldehyde;phenol

HRID 373850Notes

Reaction equation

HRID 373850 reaction equation
C=O.[C:3]1([OH:9])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[OH-].[K+]>C1(C)C(S(O)(=O)=O)=CC=CC=1.C(O)=O>[CH2:3]=[O:9].[C:3]1([OH:9])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

6

Reactant 3

HCID 712FormaldehydeHCID 996PhenolHCID 14797Potassium Hydroxide

Product 1

HCID 172281Formaldehyde;phenol

Reagents, catalysts & solvents 2

HCID 69252-Methylbenzenesulfonic acidCatalystHCID 284Formic AcidSolvent

Procedure

A resole resin is made using from 1.5:1.0 up to 2.0:1.0 chemical equivalents ratio of formaldehyde:phenol catalyzed with KOH. When this reaction has proceeded to the desired viscosity, it is cooled and retarded by addition of formic acid. To this resin is added about 3 Phr of Epon epoxy resin, 3 Phr of DMP plasticizer, and about 2 Phr of a silicone surfactant. To about 70 Parts by weight (Pbw) of this mixture is added about 14 Pbw of a mixed blowing agent system such as described above, about 1.5 Pbw Arlatone "G" surfactant, about 0.1 Pbw L-5340 surfactant, and about 16 Pbw toluene sulfonic acid catalyst. This reacts to form a suitable closed cell phenolic foam.

Workup

  1. temperatureis cooled
  2. additionTo about 70 Parts by weight (Pbw) of this mixture is added about 14 Pbw of a mixed
  3. customThis reacts
  4. customto form a suitable closed cell phenolic foam

Sources & evidence

ORD record
ord-85029eec936d4c69ae74dc79eb253b0f
Source dataset
uspto-grants-1992_11
Patent number
US05166182

Reaction notes

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