Hydrochloric Acid → poly(vinyl alcohol-co-N-vinyl-2-pyrrolidone)

HRID 704364

Reaction equation

[CH:1]([N:3]1[CH2:7][CH2:6][CH2:5][C:4]1=[O:8])=[CH2:2].[C:9](OC=C)(=[O:11])[CH3:10].Cl>[OH-].[Na+]>[CH:1]([N:3]1[CH2:7][CH2:6][CH2:5][C:4]1=[O:8])=[CH2:2].[CH:9]([OH:11])=[CH2:10]

Participants

Conditions

Temperature: 60 °C

Procedure

10 g of vinylpyrrolidone/vinyl acetate polymer (Trademark: PVP/VA E-635, GAF Corporation U.S.A.) were introduced into 200 ml of 0.2N NaOH. The mixture was stirred for 2 hours at 60° C., adjusted to neutral with 1N HCl and subjected to ultrafiltration using a thin layer filter (Trademark: UM 10, AMICON, Holland) at 3 atoms. Evaporation under reduced pressure and lyophilization to a temperature of -70° C. to -80° C. gave 8.9 g of vinylpyrrolidone/vinyl alcohol polymer as white powder.

Workup

filtrationfilter (Trademark: UM 10, AMICON, Holland) at 3 atoms
customEvaporation under reduced pressure and lyophilization to a temperature of -70° C. to -80° C.

Sources & evidence

ORD record: ord-4062374f1fb44bcebf797927c92ebf1c
Source dataset: uspto-grants-1991_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04987183

Linked notes

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