Opacified polymer composition
AssigneeImerys Minerals Limited
InventorsCesar Agra-Gutierrez, Howard Goodman, Deeba Ansari
Life of this patent
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Abstract
There is disclosed a polymer composition comprising a polymer resin and, as opacifier, a flash calcined kaolin clay filler and a TiO2. The polymer composition may be formed into shaped articles, particularly polyolefin film.
Claims49
1-44. (canceled)
A polymer composition comprising a polymer resin, a flash calcined kaolin clay filler and a titanium dioxide filler, wherein a weight ratio of the flash calcined clay to the titanium dioxide in the composition is in an amount less than or equal to about 10:1 and wherein the polymer resin has a refractive index of greater than or equal to about 1.45 when hardened and/or cured to a plastic material.
A polymer composition comprising a polyethylene resin, a flash calcined clay and a titanium dioxide, wherein the weight ratio of the flash calcined clay to the titanium dioxide ranges from about 1:100 to about 1:1.
A process for forming a plastic article comprising
- combining a polymer resin, a flash calcined kaolin clay filler and a titanium dioxide filler, wherein the weight ratio of the flash calcined clay to the titanium dioxide in the composition is in an amount less than or equal to about 10:1 and wherein the polymer resin has a refractive index of greater than or equal to about 1.45 when hardened and/or cured to form the plastic article.
A process for preparing a polymer composition comprising a polymer resin, a flash calcined kaolin clay filler and a titanium dioxide filler, wherein a weight ratio of the flash calcined clay to the titanium dioxide in the composition is in an amount less than or equal to about 10:1 and wherein the polymer resin has a refractive index of greater than or equal to about 1.45 when hardened and/or cured to a plastic material, comprising
- combining the the polymer resin, the flash calcined kaolin clay and the titanium dioxide to form a homogenous composition.
A polymer composition comprising a polyolefin resin and an opacifying amount of a mixture of titanium dioxide and a flash calcined kaolin clay.
A polyolefin film comprising an opacifying amount of a mixture of a flash calcined clay and titanium dioxide.
A plastic article comprising a polymer composition, said polymer composition comprising a polymer resin, a flash calcined kaolin clay filler and a titanium dioxide filler, wherein the weight ratio of the flash calcined clay to the titanium dioxide in the composition is in an amount less than or equal to about 10:1 and wherein the polymer resin has a refractive index of greater than or equal to about 1.45 when hardened and/or cured to form the plastic article.
Dependencies are inferred from the claim text.