Salt-resin plastic products and process
OwnerJoe C. Hillinventor
Life of this patent
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Abstract
Resin-salt plastic or polymeric reaction products are produced by reacting a resin, such as polyvinyl alcohol, with a metal salt, such as sodium chloride, in a reaction medium under agitation and conditions in which the resin does not precipitate or kick out of the reaction medium, but is solubilized in the reaction medium and reacts with the salt. The amount of salt present is at least 2.3 weight percent of the resin and is preferably added to the reaction medium in a single charge. The reaction product is separated from a mother liquor and preferably washed to remove unreacted materials and contaminants. The resin-salt reaction product, the mother liquor, and the wash liquid each have utility in the manufacture of commercially useful products.
Claims17
A process for the production of plastic resin-salt reaction products which comprises contacting, while agitating in a reaction zone, a resin having bonding sites and being capable of accepting other ions or electrons with a salt in the presence of ammonia and an acid in a reaction medium under conditions of temperature, pressure and an amount of salt of at least 2.3 weight per cent up to 800% by weight of the resin which cause the resin to solubilize in the reaction medium and react with the salt to form the plastic resin-salt reaction product, and
- separating the plastic resin-salt reaction product from the reaction medium leaving a mother liquor of 15-25% solids.
Dependencies are inferred from the claim text.