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 1):
A method for producing an electro-conductive paste comprising:\n A) a step of preparing silver nanoparticles having an average particle size of 5 nm to 20 nm, the silver nanoparticles having a coating layer comprising coating agent molecules on the surface, the step of preparing silver nanoparticles being a step in which powdery silver(I) oxide is used as a raw material, in a liquid phase, formic acid is allowed to react with the powdery silver(I) oxide to convert the powdery silver(I) oxide into silver(I) formate, silver cations contained in the silver(I) formate are reduced to silver atoms, and the silver nanoparticles are prepared from the silver atoms; and the step of preparing silver nanoparticles comprising Step i:\n a step of preparing a dispersion liquid of the powdery silver(I) oxide using a hydrocarbon solvent; \n Step ii:\n a step of adding formic acid to the dispersion liquid of the powdery silver(I) oxide to allow formic acid to react with the powdery silver(I) oxide to thereby convert the powdery silver(I) oxide into silver(I) formate, and \n preparing a dispersion liquid of powdery silver(I) formate containing powder of silver(I) formate formed in the hydrocarbon solvent; and \n Step iii:\n a step of adding a primary amine to the dispersion liquid of the powdery silver(I) formate to allow the primary amine to react with the powdery silver(I) formate to thereby form a primary amine complex of the silver(I) formate, \n dissolving the formed primary amine complex of the silver(I) formate in the hydrocarbon solvent, and then, \n forming silver nanoparticles having an average particle size of 5 nm to 20 nm comprising silver atoms by a decompositional reduction reaction of the primary amine complex of the silver(I) formate, \n wherein the silver nanoparticles having an average particle size of 5 nm to 20 nm formed in the step iii have a structure in which silver atoms on the surface of the silver nanoparticles are coated with the primary amine via coordination bonding by means of the lone electron pair present on the amino nitrogen atom of the primary amine; and \n B) a step of adding one or more metal compounds selected from the group consisting of a titanium compound and a manganese compound to the dispersion liquid of the silver nanoparticles obtained from the step A, metal contained in the metal compound being in an amount of more than 0 part by mass and 2.0 parts by mass or less based on 100 parts by mass of silver contained in the dispersion of the silver nanoparticles obtained from the step A.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 1.91954
- Patent Class: 252.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14415216', '13634881', '14158620', '12811583', '13502564']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7993581158000602
- 35 USC 102 Novelty (BERT): 0.4819844447902659
- Combined Prediction Score: 0.7676207486990808
- Mean Citation Score: 197.187736
- Max Citation Score: 233.4954
- Similarity Product: 183.83421074659825

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