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US 11,109,589 B2Granted
Process for preparing a homogeneous solution of a polymer and melanin
AssigneeCouncil of Scientific and Industrial Research
InventorsKadhiravan Shanmuganathan, Nikhil Kamlakar Pimpalkar, Abhijit Pravin Shete, Farsa Ram
Life of this patent
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Abstract
The present invention discloses a process for preparing a homogeneous solution of a polymer and melanin. The present invention further discloses a process for preparation of fibers and films from said homogeneous solution.
Claims7
A process for preparing a solution of a polymer and melanin comprising the steps of:
- a. dissolving a polymer in tetrabutylammonium hydroxide (TBAH) solution under continuous vortex mixing for a time period ranging from 1 to 2 hr to obtain a solution;
- b. dissolving melanin in tetrabutylammonium hydroxide (TBAH) solution under continuous vortex mixing for a time period ranging from 1 to 2 hr followed by mixing with the solution of step (a) to obtain a mixed solution,
- wherein the relative amounts of the polymer and the melanin in the mixed solution are in the range of 95 to 99 weight % and in the range of 1 to 5 weight %, respectively.
Dependencies are inferred from the claim text.