PATENT CLAIM ANALYSIS

Application Number: 15761120
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["585", "373000"]

Abstract:
The present invention is to provide a method that can produce polyarylene sulfide having a high viscosity at a high yield. The method of producing polyarylene sulfide according to an embodiment of the present invention includes: a preparation step of preparing a mixture containing an organic amide solvent, a sulfur source, a dihalo aromatic compound, and an alkali metal hydroxide; a first-stage polymerization step of initiating a polymerization reaction by heating the mixture and producing a prepolymer until a pH of a reaction system reaches a range of 10 to 11; and a second-stage polymerization step of continuing the polymerization reaction.

Claim (Index 2):
The method according to  claim 1 , wherein\n in the preparation step, a mixture containing the alkali metal hydroxide in an amount that is less than an equimolar amount per 1 mol of the sulfur source is prepared; and in the second-stage polymerization step, from 0.01 to 0.6 mol of alkali metal hydroxide per 1 mol of the sulfur source is added and the polymerization reaction is continued.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 1.75806
- Patent Class: 585.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15759540', '15300404', '15759855', '15763243', '13056433']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.747884592260138
- 35 USC 102 Novelty (BERT): 0.5033439249883995
- Combined Prediction Score: 0.7234305255329643
- Mean Citation Score: 292.13024400000006
- Max Citation Score: 303.1244200000001
- Similarity Product: 299.78711315081614

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