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Polyacid

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Pol`y`ac´id
a.1.(Chem.) Capable of neutralizing, or of combining with, several molecules of a monobasic acid; having more than one hydrogen atom capable of being replaced by acid radicals; - said of certain bases; as, calcium hydrate and glycerin are polyacid bases.


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Combining glycerine (a byproduct from processing vegetable or animal fats) with an organic polyacid like citric acid can make bio-derived polyesters.
7,256,250 B2 JVS-Polymers Oy, Espoo, Finland has been granted a patent for a biodegradable, curable structurally star shaped polyester resin composition, characterized in that the resin composition is based on hydroxy acid units structural units derived from unsaturated difunctional monomers; structural units derived from polyol monomers or polyacid monomers, the composition being the polycondensation product of 60-99.
 
 
 
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