Formaldehyde → Resorcinol-formaldehyde resin

HRID 2195479Notes

Reaction equation

HRID 2195479 reaction equation
[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:9]=[O:10].[OH-].[Na+]>O>[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:9]=[O:10]

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 5054ResorcinolHCID 14798Sodium Hydroxide

Product 1

HCID 159980Resorcinol-formaldehyde resin

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

7.31 parts by weight of resorcin and 10.77 parts by weight of formalin (having a concentration of 37% by weight) were mixed together. An aqueous solution of sodium hydroxide (containing 0.33 parts by weight of sodium hydroxide) was added to the resulting mixture and stirred. Thereafter 160.91 parts by weight of water were added and the mixture was aged for 5 hours to provide an aqueous solution of resorcin-formalin resin (resorcin-formalin primary condensate, or μF resin) having a solid content of 6.40% by weight. Then, a chlorosulfonated polyethylene rubber (CSM) latex was added to the aqueous μF solution and the resulting mixture was aged for 12 hours to provide a resorcin-formalin-latex (RFL).

Workup

  1. additionwere mixed together

Sources & evidence

ORD record
ord-ff34b3cae3bf4249a6f32b07f0138dd2
Source dataset
uspto-grants-2012_12
Patent number
US08337349B2

Reaction notes

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