Acrylamide → Acrylamide-acrylic acid resin

HRID 462480

Reaction equation

[C:1]([NH2:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([OH:10])(=[O:9])[CH:7]=[CH2:8]>O>[C:1]([NH2:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([OH:10])(=[O:9])[CH:7]=[CH2:8]

Participants

Conditions

Temperature: 30 °C

Procedure

56 grams 50% acrylamide, 12 grams acrylic acid and 127 grams water were mixed, and warmed up to 30° C. Nitrogen was used to purge the flask. Then 0.7 gram ammonium persulfate in 3 grams of water and 0.7 gram sodium metabisulfite in 3 grams water were added, respectively. After 20 minutes, the reaction began to take place, the temperature slowly rose to 78° C. (max.) after stirring for 1.5 hour a 20% copolymer was thus produced with an acrylamide/acrylic acid ratio of 70/30. 7 grams NaOH in 30 grams water was then added to neutralize the copolymer.

Workup

customto purge the flask
additionThen 0.7 gram ammonium persulfate in 3 grams of water and 0.7 gram sodium metabisulfite in 3 grams water were added
customslowly rose to 78° C.

Sources & evidence

ORD record: ord-afb2cfbf8f8b4735958f3371f9372578
Source dataset: uspto-grants-1985_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04515855

Linked notes

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