PATENT CLAIM ANALYSIS

Application Number: 15894278
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["523", "156000"]

Abstract:
Provided herein are cured rubber compositions containing guayule natural rubber with 2.5-4 weight % resin and fillers. By the use of a specified cure package that contains increased amounts of sulfur and accelerator, the cured rubber compositions are found to exhibit strain induced crystallization (as can be observed by X-ray diffraction). Also provided are related methods for preparing the rubber compositions.

Claim (Index 13):
A method of providing a cured guayule natural rubber containing composition with strain induced crystallization comprising:\n a. utilizing a rubber mixture comprising (i) either 100 phr of guayule natural rubber that contains 2.5-4 weight % resin, or a combination of 10-90 phr of guayule natural rubber that contains 2.5-4 weight % resin and 90-10 phr of at least one conjugated diene monomer containing polymer or copolymer, and (ii) 5-100 phr of at least one filler selected from the group consisting of carbon black and silica, and b. curing the rubber mixture by increasing the amount of sulfur in the cure package by 30-300% and increasing the amount of accelerator by 30-200% each as compared to a comparative rubber composition that contains Hevea natural rubber instead of guayule natural rubber wherein the cured guayule natural rubber containing composition and the comparative rubber composition both exhibit strain induced crystallization (as can be observed by X-ray diffraction) and have a max stress at break, a 300% Mpa and an elongation at break that are no more than +/\u221215% different and a tan delta at 0\u00b0 C. and 50\u00b0 C. (obtained from temperature sweep experiments conducted with a frequency of 31.4 rad/sec using 0.5% strain for temperatures ranging from \u2212100\u00b0 C. to \u221210\u00b0 C., and with 2% strain for temperatures ranging from \u221210\u00b0 C. to 100\u00b0 C.) that is no more than 5% different that the tan delta at 0\u00b0 C. and 50\u00b0 C. of the comparative rubber composition.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 1.26415
- Patent Class: 523.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13787644', '14076838', '13782731', '15080183', '15542528']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7271210452826878
- 35 USC 102 Novelty (BERT): 0.6709712518342533
- Combined Prediction Score: 0.7215060659378444
- Mean Citation Score: 340.2878280000001
- Max Citation Score: 673.9604
- Similarity Product: 639.3323692036629

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