PATENT CLAIM ANALYSIS

Application Number: 15939446
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-10
Patent Classification: ["526", "060000"]

Abstract:
Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems.

Claim (Index 1):
A process for operating a polymerization reactor system, the process comprising:\n (I) contacting a catalyst system comprising a first transition metal compound, a second transition metal compound, an activator, and an optional co-catalyst, with an olefin monomer and an optional olefin comonomer in a reactor within the polymerization reactor system under polymerization reaction conditions to produce an olefin polymer; (II) determining a first concentration of the first transition metal compound and a second concentration of the second transition metal compound in a solution comprising the first transition metal compound and the second transition metal compound, the first concentration and the second concentration determined via the steps of\n (i) providing a first reference absorbance profile (F 1 ) of the first transition metal compound in a first reference solution at a first known concentration, and a second reference absorbance profile (F 2 ) of the second transition metal compound in a second reference solution at a second known concentration; \n (ii) submitting a sample of the solution to a sample chamber; \n (iii) irradiating the sample in the chamber with a light beam at a wavelength in the UV-visible spectrum; \n (iv) generating a sample absorbance profile of the sample, and calculating a curve having the formula \u03b2 1 F 1 +\u03b2 2 F 2  to fit the sample absorbance profile to a least-squares regression fit value (R 2 ) of at least 0.9; wherein: \n \u03b2 1  is a first weighting coefficient; \n F 1  is the first reference absorbance profile of the first transition metal compound in the first reference solution at the first known concentration; \n \u03b2 2  is a second weighting coefficient; and \n F 2  is the second reference absorbance profile of the second transition metal compound in the second reference solution at the second known concentration; and \n (v) multiplying the first known concentration with \u03b2 1  to determine the first concentration of the first transition metal compound in the solution, and multiplying the second known concentration with \u03b2 2  to determine the second concentration of the second transition metal compound in the solution; and \n (III) adjusting a first flow rate of the first transition metal compound and/or a second flow rate of the second transition metal compound into the reactor when the first concentration and/or the second concentration has reached a predetermined level.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 90.0
- Lexical Diversity: 1.425
- Patent Class: 526.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15655929', '13625065', '10497249', '10953263', '12373776']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7328356107372178
- 35 USC 102 Novelty (BERT): 0.5608153692000626
- Combined Prediction Score: 0.7156335865835023
- Mean Citation Score: 247.148002
- Max Citation Score: 445.22607
- Similarity Product: 438.2396375344098

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