ENTERIC COATED PARTICLES CONTAINING AN ACTIVE INGREDIENT
First Claim
Patent Images
1. An enterically coated particle comprising a) a particle core containing an active ingredient;
- b) a first layer that substantially covers the core and has a surface; and
c) a second layer on the surface of the first layer, wherein the first layer has a Tg less than about 40°
C. and the second layer has a Tg greater than about 56°
C.
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Accused Products
Abstract
Enterically coated particles and chewable tablets made therefrom are disclosed. The enterically coated particles are comprised of a core containing an active ingredient, a first coating layer comprised of polymeric composition having a Tg less than about 40° C. that substantially covers the core; and a second coating layer, which substantially covers the first coating layer, comprised of a high temperature film forming polymer. The particles may be produced into a tablet form, such as a chewable tablet form, that provides for the immediate release of the active ingredient.
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Citations
34 Claims
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1. An enterically coated particle comprising
a) a particle core containing an active ingredient; -
b) a first layer that substantially covers the core and has a surface; and
c) a second layer on the surface of the first layer, wherein the first layer has a Tg less than about 40°
C. and the second layer has a Tg greater than about 56°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A chewable tablet comprised of enterically coated particles, said particles comprising
a) a particle core containing an active ingredient; -
b) a first layer that substantially covers the core, said first layer having a surface; and
c) a second layer that substantially covers the surface of the first layer, wherein the first layer has a Tg less than about 40°
C. and the second layer has a Tg greater than about 56°
C., and the first layer is comprised of methacrylic acid-methacrylic acid ester copolymers;
cellulose acetate phthalate;
polyvinyl acetate phthalate;
shellac;
hypromellose phthalate;
or derivatives, copolymers, or mixtures thereof. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A chewable tablet comprised of at least one first particle and at least one second particle, said first particle is comprised of
a) a first particle core containing a first active ingredient; -
b) a first layer that substantially covers the first particle core, the first layer having a surface; and
c) a second layer on the surface of the first layer, the second coating layer having a Tg greater than about 56°
C.,wherein the first layer has a Tg less than about 40°
C. and is comprised of methacrylic acid-methacrylic acid ester copolymers;
cellulose acetate phthalate;
polyvinyl acetate phthalate;
shellac;
hypromellose phthalate;
or derivative, copolymers, or mixtures thereof; and
said second particle comprising a second particle core containing a second active ingredient. - View Dependent Claims (32, 33)
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34. A meltaway dosage form comprised of enterically coated particles, said particles comprising
a) a particle core containing an active ingredient; -
b) a first layer that substantially covers the core, said first layer having a surface; and
d) a second layer that substantially covers the surface of the first layer, wherein the first layer has a Tg less than about 40°
C. and the second layer has a Tg greater than about 56°
C., and the first layer is comprised of methacrylic acid-methacrylic acid ester copolymers;
cellulose acetate phthalate;
polyvinyl acetate phthalate;
shellac;
hypromellose phthalate;
or derivatives, copolymers, or mixtures thereof.
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Specification