PATENT CLAIM ANALYSIS

Application Number: 16073779
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["424", "619000"]

Abstract:
This present invention discloses a temperature-sensitive nano-silver controlled release antibacterial coating composite, which is comprises: water, acrylic, polyurethane resin, temperature-sensitive nano-silver controlled release antibacterial agent, dispersant, curing agent, defoamer, filming additive and leveling agent. By adsorbing nano silver particles into the pores of mesoporous SiO 2  modified by poly N-isopropyl acrylamide, we successfully prepared a temperature-sensitive nano-silver controlled release antibacterial agent. By adding the prepared agent to the conventional coating composite, we achieved “on-off” control of the antibacterial properties of coating composite. Through the control of temperature, the release of nano-silver in the mesoporous nano-silica of the coating film layer is controlled. This control method is not only to protect the nano-silver, but also to adjust the strength of the anti-bacterial properties according to the actual demands and improve the use-efficiency of nano silver particles. This invention is in line with the new concept of “Intelligent Age” in the 21st century.

Claim (Index 6):
The process according to  claim 4  wherein the temperature-sensitive nano-silver controlled release antibacterial agent is prepared by nanometer mesoporous SiO 2  modified by poly N-isopropyl acrylamide adsorbing nano silver; and the temperature-sensitive nano-silver controlled release antibacterial agent is prepared by a process comprising the steps of:\n Step 1: mixing anhydrous ethanol, ether, ammonia and deionized water at room temperature to form a first mixture, then adding cetyl trimethyl ammonium bromide to the first mixture, and stirring for 30 minutes to obtain a second mixture, then adding TEOS to the second mixture, and stirring for 48 hours to obtain a third mixture, centrifuging and filtering the third mixture to obtain a first solid powder, ultrasonically dispersing the first solid powder in deionized water to obtain a mesoporous SiO 2  dispersion; \n Step 2: adding 3-(trimethoxysilyl)propyl methacrylate to the mesoporous SiO 2  dispersion, and stirring for 48 hours at room temperature to obtain a fourth mixture, then centrifuging and filtering the fourth mixture to obtain a second solid powder, ultrasonically dispersing the second solid powder in deionized water to obtain a dispersion, then adding N-isopropyl acrylamide, N, N-methylenebisacrylamide and KPS to the dispersion, reacting for 4 hours at a temperature of 70\u00b0 C. to obtain a nanometer mesoporous SiO 2  modified by poly N-isopropyl acrylamide dispersion; \n Step 3: Dissolving dioctyl sodium sulfosuccinate in dodecane to obtain a first solution, taking two equal volumes of the first solution, marking them as A and B respectively, and then stirring A and B at a high agitation speed, dropping AgNO 3  solution to A and stirring for 30 minutes to obtain a first transparent emulsion, and dropping equal volume of hydrazine hydrate solution to B and stirring for 30 minutes to obtain a second transparent emulsion, then adding the second transparent emulsion to the first transparent emulsion and stirring for 30 minutes to obtain a colloidal solution, gaining nano silver particles from the colloidal solution by copper mesh, and then drying the nano silver particles for 30 minutes in a vacuum at room temperature; adding the nano silver particles to the nanometer mesoporous SiO 2  modified by poly N-isopropyl acrylamide dispersion and then stirring for 36 hours at a high agitation speed to obtain

Metadata:
- Claim Count in Document: 5.0
- Percentile: 95.0
- Lexical Diversity: 2.0
- Patent Class: 424.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15493188', '12264634', '13703317', '11074734', '15539069']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6614718519170307
- 35 USC 102 Novelty (BERT): 0.5007355840808843
- Combined Prediction Score: 0.6453982251334162
- Mean Citation Score: 183.640524
- Max Citation Score: 228.9304
- Similarity Product: 165.6373424296379

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test