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AssigneeW. R. Grace & Co.-Conn.
InventorsAmaia Montoya-Goni, John Kaarto, Michelle Ni Paine, Jose Manuel Rego, Feng Gu, Demetrius Michos, James Neil Pryor
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The present invention provides polymer compositions having improved corrosivity, color stability and clarity. Also disclosed is a process of preparing the polymers. The process may comprise incorporating into the polymer an acid neutralizing amount of an amorphous aluminum silicate. The amorphous aluminum silicate may be present in the polymer in an amount such that the polymer composition having a Corrosivity Index of less than 6. A refractive index of the amorphous aluminum silicate may be the same or substantially the same as a refractive index of the polymer.
A method of neutralizing an acid in a polymer, the method comprising contacting a polymer with a neutralizing amount of an amorphous aluminum silicate.
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A process of reducing corrosivity of a polymer containing acidic impurities, the process comprising:
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A polymer composition having reduced corrosivity comprising a polymer comprising acid impurities and an acid neutralizing amount of an amorphous aluminum silicate.
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Dependencies are inferred from the claim text.