Process for removing insoluable N-vinyl amide polymer from equip

Details Process for removing insoluable N-vinyl amide polymer from equip Process for removing insoluable N-vinyl amide polymer from equip

1995-04-04

1998-06-23

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2219, 134 38, 134 42, 510201, 510202, 510206, 510212, B08B 308, B08B 900, B08B 908, C23D 1700

Patent

active

057699593

ABSTRACT:
Insoluble polymer formed during the distillation of N-vinylformamide is removed by contacting the insoluble polymer with an aqueous weakly basis solution in a closed system at elevated temperature. Polymer (up to 50 wt % polymer gel or 5.5 wt % dry polymer in reaction mixture) is treated with an aqueous solution of an amine, alkanolamine or weak inorganic base having a concentration of at least 1 molar. Solvents like alcohols, glycol ethers or amides may be added as a cosolvent in an amount of from 0 to about 85% by weight.

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patent: 5381807 (1995-01-01), Lee
James E. Banks,"A Programmed Introduction to Organic Chemistry" Naming Organic Compounds, Second Edition.
W.B Saunders Company, 1976, pp. 216-220.

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