Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-01-25
1997-09-23
Clark, W. Robinson H.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
524405, 524425, 524423, C08K 326, C08K 324, C08L 2904
Patent
active
056705743
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.
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