PATENT CLAIM ANALYSIS

Application Number: 16383951
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-08
Patent Classification: ["521", "172000"]

Abstract:
Polyester polyols made from thermoplastic polyesters are disclosed. The polyols can be made by heating a thermoplastic polyester such as virgin PET, recycled PET, or mixtures thereof, with a glycol to give a digested intermediate, which is then condensed with a dimer fatty acid to give the polyol. The invention includes a polyester polyol comprising recurring units of a glycol-digested thermoplastic polyester and a dimer fatty acid. The polyester polyol can also be made in a single step by reacting the thermoplastic polyester, glycol, and dimer acid under conditions effective to produce the polyol. High-recycle-content polyols having desirable properties and attributes for formulating polyurethane products, including aqueous polyurethane dispersions, can be made. The polyols provide a sustainable alternative to bio- or petrochemical-based polyols.

Claim (Index 1):
A process which comprises:\n (a) heating a glycol-digested polyethylene terephthalate (PET) or glycol-modified polyethylene terephthalate (PETG) with a glycol selected from the group consisting of propylene glycol, diethylene glycol, 2-methyl-1,3-propanediol, sorbitol, neopentyl glycol, glycerol, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, 3-methyl-1,5-pentanediol, 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, bisphenol A ethoxylates, 1,6-hexanediol, block or random copolymers of ethylene oxide and propylene oxide, and mixtures thereof, to give a digested intermediate; and (b) condensing the intermediate with an unsaturated dimer fatty acid to give a polyester polyol; wherein the molar ratio of dimer fatty acid to PET or PETG is within the range of 0.1 to 0.5, the molar ratio of glycol to PET or PETG is within the range of 2.5 to 4.5, and the polyol has a hydroxyl number within the range of 40 to 400 mg KOH/g.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 100.0
- Lexical Diversity: 1.85135
- Patent Class: 521.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15805600', '14822528', '15083491', '15347924', '15079349']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.895921789448018
- 35 USC 102 Novelty (BERT): 0.6068433108437047
- Combined Prediction Score: 0.8670139415875867
- Mean Citation Score: 493.040376
- Max Citation Score: 573.7573
- Similarity Product: 478.7656611563981

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