Process for preparing polyvinylamine and salts thereof

Details Process for preparing polyvinylamine and salts thereof Process for preparing polyvinylamine and salts thereof

1979-04-17

1980-08-05

Higel, Floyd D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

8647, 260144, 260159, 260543A, 260556B, 260561R, 260561N, 426250, 526 75, 526303, 525336, 525369, 525351, 525377, 260583P, 525353, 525375, A23L 127, C07C 8724, C08F12052, C08F12602

Patent

active

RE0303623

ABSTRACT:
Poly(vinylamine salts of mineral acids are produced by reacting acetaldehyde and acetamide at a mole ratio of 1:2-4 with acid catalyst, cracking the ethylidene-bisacetamide which results into vinylacetamide, polymerizing the vinylacetamide with a free radical polymerization catalyst, and hydrolyzing the poly(vinylacetamide) to the desired amine salts by contacting the polyvinylacetamide with an aqueous solution of the corresponding mineral acid. This product may be converted to the free amine, which in turn may function as a precursor in the manufacture of certain polymeric dyes and colorants.

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