PATENT CLAIM ANALYSIS

Application Number: 16460723
Application Type: Utility
Filing Date: 2019-07
Publication Date: 2019-10
Patent Classification: ["428", "036900"]

Abstract:
The purpose of the present invention is to provide: a cross-copolymer in which a residual catalyst component remains in a reduced amount and which has improved transparency, applicability to medical materials and yellowish discoloration resistance; and a method for producing the cross-copolymer. According to the present invention, a cross-copolymer is provided, wherein the cross-copolymer is produced through a coordination polymerization step of carrying out copolymerization of an olefin monomer, an aromatic vinyl compound monomer and an aromatic polyene using a single-site coordination polymerization catalyst to synthesize an olefin-(aromatic vinyl compound)-(aromatic polyene) copolymer and a subsequent anionic polymerization step of carrying out polymerization in the co-presence of the olefin-(aromatic vinyl compound)-(aromatic polyene) copolymer and an aromatic vinyl compound monomer using an anionic polymerization initiator, the cross-copolymer being characterized in that the total mass of aluminum and lithium, which are residual catalyst components, contained in the cross-copolymer is 200 ppm or less.

Claim (Index 1):
A method for producing a cross-copolymer, comprising the steps of:\n obtaining a polymer solution containing a cross-copolymer; preparing liquid containing the polymer solution, water, and an organic acid and subjecting the liquid to emulsification/dispersion, and thereafter; separating and removing the water from the polymer solution; and collecting the cross-copolymer from the polymer solution, wherein the cross-copolymer is produced through a coordination polymerization step in which a single site coordination polymerization catalyst is used to carry out copolymerization of an olefin monomer, an aromatic vinyl compound monomer, and an aromatic polyene to synthesize an olefin-(aromatic vinyl compound)-(aromatic polyene) copolymer, and a subsequent anionic polymerization step in which an anionic polymerization initiator is used to carry out polymerization in a co-presence of the ethylene-(aromatic vinyl compound)-(aromatic polyene) copolymer and an aromatic vinyl compound monomer, and wherein the organic acid has a pKa of from 1 to 7 and solubility of the organic acid is 5 g or more per 100 g of water at 20\u00b0 C.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 100.0
- Lexical Diversity: 2.1875
- Patent Class: 428.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15301247', '12302818', '12988101', '10759084', '14765667']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.886790025163822
- 35 USC 102 Novelty (BERT): 0.5065743829537331
- Combined Prediction Score: 0.8487684609428131
- Mean Citation Score: 252.686534
- Max Citation Score: 295.70557
- Similarity Product: 228.7805957563651

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test