PATENT CLAIM ANALYSIS

Application Number: 16083755
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["525", "388000"]

Abstract:
The present invention relates to a method for superabsorbent polymer that has a crosslinking density gradient increasing from the inside toward the outside, and thus, exhibits excellent properties with simultaneously improved centrifuge retention capacity and absorbency under load.

Claim (Index 1):
A method for preparing superabsorbent polymer comprising the steps of:\n conducting crosslinking polymerization of water soluble ethylenically unsaturated monomers having acid groups of which at least a part are neutralized, in the presence of an internal crosslinking agent comprising a compound represented by the following Chemical Formula, and inorganic material, to form a hydrogel polymer; drying the hydrogel polymer to form a base resin powder; and additionally crosslinking the surface of the base resin powder in the presence of a surface crosslinking agent to form a surface crosslink layer: in the Chemical Formula 1, R 1  is a divalent organic group derived from C1-10 alkane, and R 2  is hydrogen or a methyl group.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 97.0
- Lexical Diversity: 1.10811
- Patent Class: 525.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16084111', '16083749', '15576127', '15757041', '15103552']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7943459656963306
- 35 USC 102 Novelty (BERT): 0.5395467132680123
- Combined Prediction Score: 0.7688660404534988
- Mean Citation Score: 322.37636200000014
- Max Citation Score: 427.50455
- Similarity Product: 380.25200538603065

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

Dataset: test