PATENT CLAIM ANALYSIS

Application Number: 15780306
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["252", "500000"]

Abstract:
Provided is an electro-conductive paste suitable to yield a sintered metal fine particulate layer having excellent adhesion to an ITO substrate. Powdery silver oxide is dispersed in a non-polar solvent. An excess amount of formic acid is added to allow the formic acid to react with the powdery silver oxide to thereby convert the powdery silver oxide into powdery silver formate (HCOOAg). A primary amine is allowed to react with the powdery silver formate to provide a primary amine addition salt of the silver formate, and the primary amine addition salt of the silver formate is subjected to a decompositional reduction reaction at a liquid temperature of around 70° C. to generate silver nanoparticles having a coating layer including the primary amine. To the resulting silver nanoparticle dispersion liquid, more than 0 parts by mass and 2.0 parts by mass or less of a titanium compound or manganese compound is added per 100 parts by mass of silver.

Claim (Index 16):
The method according to  claim 1 , wherein\n the step A further comprises the following step iv to step vi after the step iii: Step iv: a step of distilling the hydrocarbon solvent off under reduced pressure after the step iii is finished, the hydrocarbon solvent being contained in the reaction liquid containing the silver nanoparticles having an average particle size of 5 nm to 20 nm, the surface of the silver nanoparticles being coated with the primary amine, and recovering a residue containing residual primary amine, a primary amine addition salt of the formic acid, and the silver nanoparticles having an average particle size of 5 nm to 20 nm, the surface of the silver nanoparticles being coated with the primary amine; Step v: a step of adding to the residue recovered in the step iv methanol in an amount selected in the range of 200 parts by mass to 300 parts by mass and distilled water in an amount selected in the range of 50 parts by mass to 300 parts by mass per 100 parts by mass of the powdery silver(I) oxide as the raw material, dissolving the primary amine addition salt of the formic acid and the residual primary amine contained in the residue in the mixed solvent of methanol and distilled water, separating a resulting mixture into a precipitate layer containing the silver nanoparticles having an average particle size of 5 nm to 20 nm, the surface of the silver nanoparticles being coated with the primary amine, and a liquid phase layer containing the primary amine addition salt of the formic acid and primary amine dissolved in the mixed solvent, and removing the liquid phase layer containing the primary amine addition salt of the formic acid and the primary amine dissolved in the mixed solvent to recover a precipitate layer containing the silver nanoparticles having an average particle size of 5 nm to 20 nm, the surface of the silver nanoparticles being coated with the primary amine; Step vi: a step of adding a hydrocarbon solvent having a boiling point in the range of 65\u00b0 C. to 155\u00b0 C. in an amount selected in the range of 100 parts by mass to 200 parts by mass per 100 parts by mass of the powdery silver(I) oxide as the raw material to the precipitate layer recovered in the step v, homogeneously dispersing the silver nanoparticles having an average particle size of 5 nm to 20 nm, the surface of the silver nanoparticles being coated with the primary amine, contained in the precipitate layer in the hydrocarbon solvent having a boiling point in the range of 65\u00b0 C. to 155\u00b0 C. to obtain a dispersion liquid, separating this dispersion liquid into a layer of a small amount of the mixed solvent of methanol and distilled water with which the precipitate layer has been impregnated and a layer of a dispersion liquid containing the hydrocarbon solvent having a boiling point in the range of 65\u00b0 C. to 155\u00b0 C. as a dispersion solvent, and removing the layer of the small amount of the mixed solvent of methanol and distilled water to recover the layer of the dispersion liquid containing the hydrocarbon solvent having a boiling point in the range of 65\u00b0 C. to 155\u00b0 C. as the dispersion solvent.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 1.91954
- Patent Class: 252.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14415216', '13634881', '14158620', '12811583', '13502564']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8180201751043135
- 35 USC 102 Novelty (BERT): 0.4823292814994237
- Combined Prediction Score: 0.7844510857438245
- Mean Citation Score: 197.187736
- Max Citation Score: 233.4954
- Similarity Product: 188.0739410557865

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

Dataset: test