PATENT CLAIM ANALYSIS

Application Number: 15741811
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["424", "497000"]

Abstract:
The present disclosure relates to the production of functional coatings for the controlled release of volatile agents. More specifically, the present disclosure relates to capsules, in particular microcapsules or nanocapsules, chemically functionalised with photocatalytic nanomaterials upon the internal or external surface of the wall of the capsule. The capsule, by solar action or artificial light, can have the same spectrum of electromagnetic radiation, and can release an active agent. The capsule can also transport the active agent, which has photocatalytic properties. The capsule has an external diameter of 0.1-500 μm and can be formed by a wall and a nucleus to lodge the active agent. The present disclosure further relates to a method of obtainment of the capsules.

Claim (Index 21):
A method for obtaining a capsule, comprising:\n preparing a first organic solution comprising 5-30% (w/v) of a reactive compound selected from the group consisting of: 2,4-toluene diisocyanate, 2,4-diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate, and 10-20% w/v of a polymer selected from the group consisting of polysulfone, poly(methyl acrylate), cellulose acetate, and polyacrylonitrile; preparing a second organic solution comprising 1) a volatile solvent selected from the group consisting of: dichloromethane, N,N-dimethylformamide, acetone, and chloroform; and 2) 70-95% (w/v) of a hydrophobic active agent; combining the first and second organic solutions to form a combined organic solution; stirring the combined organic solution; preparing an aqueous solution comprising an emulsifier, a colloidal agent, or mixtures thereof, wherein the emulsifier is gum arabic (15-20% w/v), Tween 20 (1-3% v/v) or mixtures thereof and wherein the colloidal agent is poly(vinyl acid) (1-3% w/v); adding an active diffusing agent into the organic or aqueous solution; forming an oil/water emulsion by mixing the combined organic solution with the aqueous solution, and mechanically stirring the resulting mixture at 400-1200 rpm for 3-8 min; for the encapsulation of hydrophobic active agents using the reactive monomers 2,4-toluene diisocyante, 2,4-diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate, adding to the emulsion a hydrophilic monomer selected from the group consisting of: ethylenediamine, diethylenetriamine, hexamethylenediamine, p-phenylenediamine, 1,4-butanediol, 1,6-hexanediol, ethylene glycol and polyethylene glycol in a range of concentrations comprised between 0.2 and 1 mol/dm3; or for the encapsulation of hydrophilic active agents using polysulphone, poly(methyl methacrylate), cellulose acetate and polyacrylonitrile, adding the emulsion to a precipitation bath and evaporating the solvent; stirring the emulsion; collecting nano- or microcapsules by centrifugation or filtration at ambient temperature; dispersing the collected nano- or microcapsules in an aqueous solution comprising 10-20% v/v of amines, polyols, polyethers, or mixtures thereof; and adding, to a suspension of the obtained nano- or microcapsules, a nanomaterial comprising a photocatalytic material, wherein the nanomaterial is selected from the group consisting of: TiO2, WO3, WS2, Nb2O5, MoO, MoS2, V2O5, MgF2, Cu2O, NaBiO3, NaTaO3, SiO2, RuO2, BiVO4, Bi2WO6, Bi12TiO20. NiO\u2014K4NB6O17, SrTiO3, Sr2NbO7, Sr2TaO7, BaTiO3, BaTaTi2O5, ZnO, ZrO2, SnO2, ZnS, CaBi2O4, Fe2O3, Al2O3, Bi2O6, Bi2S3, CdS, CdSe, and mixtures thereof.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 86.0
- Lexical Diversity: 1.95522
- Patent Class: 424.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15165522', '15311119', '15526280', '14971645', '10480405']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6986613426012698
- 35 USC 102 Novelty (BERT): 0.4793664840592826
- Combined Prediction Score: 0.676731856747071
- Mean Citation Score: 177.86749400000005
- Max Citation Score: 186.09077
- Similarity Product: 137.13882393854857

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test