Patent ID: 7816341
Filing Date: 2010-10-19
Classification: A61K,A61Q,Y10S

Abstract:
1. A homogeneous, thermoreversible gel comprising carrageenan wherein said carrageenan has a viscosity of 5 to less than 10 cP at 75° C. when measured using a Brookfield LVF viscometer, spindle #1, at 60 r.p.m., in a 0.10 molar aqueous sodium chloride solution containing 1.5% by weight of said carrageenan based on the weight of all components in said solution, and optionally at least one of a plasticizer, a second film former, a bulking agent, and a pH controlling agent, wherein said gel has a solids content of at least 40%, said carrageenan is present in an amount of from 0.5% to 15% by weight of the gel, and said carrageenan is at least one of iota carrageenan, kappa carrageenan or kappa-2 carrageenan; and wherein (i) said carrageenan is at least 80% by weight kappa carrageenan based on the total weight of all carrageenen in the gel and the gel has a gelling temperature of 30° C. or less; (ii) said carrageenan is at least 80% by weight kappa-2 carrageenan based on the total weight of all carrageenan in the gel and the gel has a gelling temperature of 35° C. or less; or (iii) said carrageenan is at least 80% by weight iota carrageenan based on the total weight of all carrageenan in the gel and the gel has a gelling temperature of 35° C. or less.