Water soluble imide coating composition and method of making fro

Details Water soluble imide coating composition and method of making fro Water soluble imide coating composition and method of making fro

1985-01-23

1986-07-15

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

524366, 524376, 524378, 524592, 524600, 524611, 528179, 528182, 528188, 528189, 528222, 528224, 528229, 528315, 528317, 528318, 528321, 528323, C08G 6914, C08G 7310

Patent

active

046007709

ABSTRACT:
Methods of making water soluble polyimide resin compositions. A carboxy terminated bisimide is prepared by reacting a suitable aromatic dianhydride with a suitable oxoimine. The bisimide is then mixed with a sufficient quantity of a water soluble solvent to dissolve the bisimide. Water is added to make a solution of the desired viscosity. An aromatic diamine is added to this water solution. To the mixture is added a suitable quantity of a tertiary amine to stabilize the resin. The solution is coated onto a surface and dried to produce a smooth, flexible coating. The coating can then be heated to an appropriate temperature to produce a fully polymerized coating which is thermally stable and resistant to oils and solvents.

REFERENCES:
patent: 4183838 (1980-01-01), Gagliani
patent: 4183839 (1980-01-01), Gagliani
patent: 4442283 (1984-04-01), Gagliani et al.

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