Nitrogen → HCID 86742155, compound

HRID 1252360Notes

Reaction equation

HRID 1252360 reaction equation
[C:1](OC=C)(=[O:3])[CH3:2].[CH:7]([O:9][CH2:10][CH2:11][CH2:12][CH3:13])=[CH2:8].N#N.[OH-].[Na+]>CO.O>[CH:1]([OH:3])=[CH2:2].[CH:7]([O:9][CH2:10][CH2:11][CH2:12][CH3:13])=[CH2:8]

Participants

7

Procedure

172.2 g (2.00 moles) of vinyl acetate, 15.1 g (0.15 mole) of n-butyl vinyl ether, 56.2 g of methanol and 0.28 g of 2,2'-azobis-2,4-dimethylvaleronitrile were mixed and polymerized in an atmosphere of N2 at 62° C. for 8 hours. Subsequently, 749.2 g of 5% water-containing methanol and 8.0 g (0.20 mole) of caustic soda were added to the reaction product for saponification at 45° C. for 2 hours. The reaction mixture was milled and filtered to obtain a polymer portion, followed by washing with 5% water-containing alcohol to eliminate impurities such as sodium acetate therefrom. The purified polymer was dried under reduced pressure and milled to obtain 82.5 g of a white powdery vinyl alcohol/n-butyl vinyl ether (93/7 by molar ratio) copolymer (hereinafter referred to as PVA/n-BVE).

Workup

  1. additionwere added to the reaction product for saponification at 45° C. for 2 hours
  2. customThe reaction mixture was milled
  3. filtrationfiltered
  4. customto obtain a polymer portion
  5. washby washing with 5% water-
  6. additioncontaining alcohol
  7. customThe purified polymer was dried under reduced pressure
  8. custommilled

Sources & evidence

ORD record
ord-c85e05ed7fc643568293170c76f5793c
Source dataset
uspto-grants-1988_05
Patent number
US04743441

Reaction notes

Loading…