PATENT CLAIM ANALYSIS

Application Number: 15988683
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-02
Patent Classification: ["585", "512000"]

Abstract:
This disclosure relates to a continuous process for making a dimer from a terminal olefin in the presence of a catalyst system comprising a metallocene compound and alumoxane.

Claim (Index 1):
A continuous process for making a vinylidene olefin dimer from a terminal olefin comprising at least four (4) carbon atoms per molecule, comprising:\n feeding a monomer stream comprising the terminal olefin into a reactor at a first feeding rate of R(to) moles of the terminal olefin per hour; feeding a metallocene compound having a formula Cp(Bg) n MX 2 Cp\u2032 into the reactor at a second feeding rate of R(mc) moles of the metallocene compound per hour, wherein M is selected from Hf and Zr; each X is independently a halogen or a hydrocarbyl group; Cp and Cp\u2032, the same or different, independently represents a cyclopentadienyl, alkyl-substituted cyclopentadienyl, indenyl, alkyl-substituted indenyl, 4,5,6,7-tetrahydro-2H-indenyl, alkyl-substituted 4,5,6,7-tetrahydro-2H-indenyl, 9H-fluorenyl, and alkyl-substituted 9H-fluorenyl; each Bg is a bridging group covalently linking Cp and Cp\u2032; and n is 0, 1, or 2; feeding an alumoxane feed into the reactor at a third feeding rate corresponding to R(Al) moles of aluminum atoms per hour, wherein the alumoxane feed comprises metal elements other than aluminum, alkali metals, alkaline earth metals, and the metal contained in the metallocene compound at a total concentration no greater than 50,000 ppm by mole, based on the total moles of all metal atoms present in the alumoxane feed; conducting oligomerization reaction in the reactor at a temperature in the range from 50 to 90\u00b0 C., drawing a stream of oligomerization reaction mixture from the reactor comprising unreacted terminal olefin, a dimer of the terminal olefin, and a trimer of the terminal olefin, wherein: the first feeding rate, the second feeding rate, and the third feeding rate are chosen such that:\n 350\u2264R( to )/R( mc )\u2264750, \n 2\u2264R( Al )/R( mc )\u226410, and \n the oligomerization reaction has a selectivity of the terminal olefin toward trimer no greater than 5%.

Metadata:
- Claim Count in Document: 65.0
- Percentile: 93.0
- Lexical Diversity: 1.16
- Patent Class: 585.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15988604', '15592713', '13611676', '13611500', '13612246']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6748995010032286
- 35 USC 102 Novelty (BERT): 0.5401016531858267
- Combined Prediction Score: 0.6614197162214884
- Mean Citation Score: 318.234098
- Max Citation Score: 367.57404
- Similarity Product: 276.3745671059847

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