Alkaline and water soluble articles and method of making same
AssigneeTredegar Industries, Inc.
InventorsPeter I. Chang, Carl D. Ray
Life of this patent
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Abstract
The present invention relates to degradable thermoplastic compositions comprising at least one polycaprolactone property modifier blended with at least one water soluble polymer and/or at least one alkaline soluble polymer. Articles produced with this composition have a long and useful life under dry or aqueous conditions. When such articles are exposed to a hot aqueous alkaline solution, the composition dissolves and is readily disposed.
Claims1
An alkaline-soluble thermoplastic composition comprising a blend of at least one alkaline soluble polymer present at about 60 to about 90%, by weight, and a property modifier comprising polycaprolactone, present at about 30 to about 40%, by weight, based on the weight of the alkaline soluble thermoplastic composition wherein the alkaline soluble polymer comprises about 45 to about 65%, by weight, an ethyl acrylate/methacrylic acid copolymer;
- about 25 to 30%, by weight, of an ethyl acrylate/acrylate acid/styrene-modified terpolymer;
- about 5 to about 10%, by weight, of a blending agent suitable to blend the ethyl acrylate/methacrylic acid copolymer with the ethyl acrylate/acrylate acid/styrene modified terpolymer;
- and, optionally, about 0.5 to about 2.5 anti-block additive.
Dependencies are inferred from the claim text.