PATENT CLAIM ANALYSIS

Application Number: 15914798
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["524", "591000"]

Abstract:
The present invention relates to aqueous polyurethane dispersions prepared with no catalyst or very low loading of organic catalyst that can be used as cold sealable adhesives, are surfactant and solvent free and have low VOC emissions, are environmentally friendly, and provide for homogeneous and aging-resistant adhesives that can be used for cosmetic, pharmaceutical and food packaging applications. Also encompassed are processes for their production, compositions containing them and their use as adhesives.

Claim (Index 1):
A process for manufacturing an aqueous polyurethane dispersion, comprising:\n (1) forming an NCO-terminated polyurethane prepolymer from a reaction mixture comprising:\n (a) at least one polyether polyol with a number average molecular weight M n  in the range of 400 to 10000 g/mol, wherein the polyether polyol is an aliphatic polyether polyol; \n (b) at least one anionic stabilizer, wherein that comprises at least two hydroxyl groups and at least one negatively charged functional group; and \n (c) at least one aliphatic polyisocyanate, wherein the polyisocyanate is used in molar excess relative to the hydroxy groups of the other components of the reaction mixture to obtain an NCO-terminated polyurethane prepolymer; \n wherein formation of the NCO-terminated polyurethane prepolymer is carried out in the absence of a tin-containing catalyst; \n (2) dispersing the prepolymer into a continuous aqueous phase under application of shear forces, to obtain an emulsion; and (3) reacting the prepolymer with at least one chain extension agent to obtain an aqueous polyurethane dispersion.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 1.42857
- Patent Class: 524.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15686437', '12546025', '12961256', '12928410', '10733027']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8167016455449317
- 35 USC 102 Novelty (BERT): 0.4888158671901222
- Combined Prediction Score: 0.7839130677094508
- Mean Citation Score: 243.95947800000005
- Max Citation Score: 276.58658
- Similarity Product: 228.99822702337863

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

Dataset: test