PATENT CLAIM ANALYSIS

Application Number: 16008164
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["560", "099000"]

Abstract:
A method for enhancing reaction efficiency of a terephthalate plasticizer involves using a homogenizer to fine PTA to slurry having a particle size of 80-110 μm, and esterifying the PTA slurry with a C6-C10 alcohol in the presence of a titanium-based catalyst. The reactivity is enhanced by more than 37.5%, and the terephthalate plasticizer so synthetized is low-odor and has a purity of more than 99.5% as well as good physical properties such as acid value, color, and index of refraction.

Claim (Index 1):
A method for use in enhancing reaction efficiency for producing a terephthalate plasticizer, comprising steps of:\n (1) making purified terephthalic acid (PTA) and a C6-C10 alcohol mixed in a weight ratio of 1: 0.8-1.5 and processed in a homogenizer for 2-8 hours so as to form PTA slurry having a PTA particle size of between 80 and 110 \u03bcm; (2) taking the PTA slurry of Step (1) of 75-107 wt % and taking additional said C6-C10 alcohol of 30-85 wt % as the components, both based on a total weight of the final terephthalate plasticizer of Step (5), wherein the C6-C10 alcohol used in Step (1) and in this step is selected from 2-ethylhexanol (2-EH), isononyl alcohol (INA), and isodecyl alcohol; (3) taking a titanium-based catalyst of 0.1-2.0 wt % as an esterification catalyst, based on the total weight of the terephthalate plasticizer of Step (5); (4) esterifying the components of Step (2) with the presence of the esterification catalyst of Step (3) at a pressure of between -30 and 1013 mbar and a temperature of between 200 and 250\u00b0 C. for 2-3 hours to form a reaction mixture; (5) after esterification, neutralizing the reaction mixture with an aqueous solution of alkaline metal hydroxide that contains a hydroxide mixture of 5-20 wt %, until the reaction mixture having its acid value reduced to below 0.07 mgKOH/g, and then performing removal of the residual alcohol, drying and filtration, so as to obtain the final terephthalate plasticizer.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 94.0
- Lexical Diversity: 1.48333
- Patent Class: 560.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15155104', '14385880', '14149199', '15305932', '13671941']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6875150774794817
- 35 USC 102 Novelty (BERT): 0.525443063887569
- Combined Prediction Score: 0.6713078761202904
- Mean Citation Score: 183.10847200000003
- Max Citation Score: 227.98293
- Similarity Product: 156.94810326633095

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