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US 2023/0147314 A1Published application
A method of preparing dope dyed lyocell fibre
AssigneeAditya Birla Science and Technology Company Private Limited
InventorsVivek GANVIR, Santosh REVANKAR, Dhirendra SINGH, Shirish THAKRE, Sachin JADHAV
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Abstract
A process for obtaining a dope dyed lyocell fibre can include the steps of (a) mixing one or more pigment with an aqueous organic solvent to obtain a slurry; (b) applying vacuum to said slurry to remove excess water content to obtain a masterbatch (c) mixing the masterbatch obtained in step (b) to a lyocell dope to obtain a pigmented dope; and (d) extruding said pigmented dope of step (c) through a spinneret to form dope dyed lyocell fiber.
Claims9
A process for obtaining a dope dyed lyocell fibre, comprising the steps of:
- (a) mixing one or more pigment with an aqueous organic solvent to obtain a slurry;
- (b) applying vacuum at a predetermined temperature to said slurry to remove excess water content to obtain a masterbatch comprising 8-15% water and 0.4 to 15% pigment
- (c) mixing the masterbatch obtained in step (b) to a lyocell dope to obtain a pigmented dope;
- and
- (d) extruding said pigmented dope of step (c) through a spinneret to form dope dyed lyocell fiber.
2 more elements
Dependencies are inferred from the claim text.