PATENT CLAIM ANALYSIS

Application Number: 15921757
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["526", "090000"]

Abstract:
Unsaturated and hydrogenated polyalpha-olefin products can be made with a high selectivity toward vinylidenes and tri-substituted vinylenes combined, a high selectivity toward vinylidenes, and a low selectivity toward 1,2-di-substituted vinylenes by using a catalyst system comprising a metallocene compound having the following structure in the polymerization reaction:

Claim (Index 1):
A process for making a polyalpha-olefin (\u201cPAO\u201d), the process comprising:\n contacting a C2-C30 alpha-olefin feed with a catalyst system comprising a metallocene compound in a polymerization reactor under polymerization conditions to effect a polymerization reaction to obtain a polymerization reaction mixture comprising vinylidenes, tri-substituted vinylenes, optionally 1,2-di-substituted vinylenes, and optionally vinyls; and obtaining an unsaturated PAO product from the polymerization reaction mixture, wherein the unsaturated PAO product comprises vinylidenes, tri-substituted vinylenes, optionally 1,2-di-substituted vinylenes, optionally vinyls, and substantially free of the alpha-olefin feed, wherein: the metallocene compound has a structure represented by formula (F-MC) below comprising a first cyclopentadienyl ring directly connected with R 1 , R 2 , R 3 , and R 4  and a second cyclopentadienyl ring directly connected with R 5 , R 6 , R 7 , and R 8 : wherein: R 1  and R 4  are each independently a hydrogen, a substituted or unsubstituted linear, branched linear, or cyclic C1-C30 hydrocarbyl group, R 2  and R 3  are each independently a substituted or unsubstituted linear, branched linear, or cyclic C1-C50 hydrocarbyl group, or alternatively, two or more of R 1 , R 2 , R 3 , and R 4 , taken together, with the carbon atoms in the first cyclopentadienyl ring to which they are directly connected, form one or more substituted or unsubstituted ring annelated to the first cyclopentadienyl ring; R 5 , R 6 , R 7 , and R 8  are each independently a hydrogen, or a substituted or unsubstituted linear, branched linear, or cyclic C1-C30 hydrocarbyl group, provided: R 6  and R 7  are not both hydrogen; or alternatively, two or more of R 5 , R 6 , R 7 , and R 8 , taken together, with the intermediate carbon atoms in the second cyclopentadienyl ring to which they are directly connected, form one or more substituted or unsubstituted ring annelated to the second cyclopentadienyl ring; provided: the first cyclopentadienyl ring and the second cyclopentadienyl ring are not annelated to ring structures simultaneously; BG is a bridging group connected directly with both the first cyclopentadienyl ring and the second cyclopentadienyl ring; M is a transition metal having a valency of v; X, the same or different at each occurrence, is independently selected from halogens, C1-050 substituted or unsubstituted linear, branched, or cyclic hydrocarbyl groups; and m is an integer equal to v-2.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 90.0
- Lexical Diversity: 1.42857
- Patent Class: 526.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15592713', '11656208', '13732840', '13611629', '11302998']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7365658128694329
- 35 USC 102 Novelty (BERT): 0.5385461313559914
- Combined Prediction Score: 0.7167638447180887
- Mean Citation Score: 302.155036
- Max Citation Score: 399.93076
- Similarity Product: 287.3321893066597

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