PATENT CLAIM ANALYSIS

Application Number: 16322952
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["525", "437000"]

Abstract:
A porous ultra-soft ultra-fine denier polyester fiber and preparation method. The modified polyester is spun with a porous spinneret to produce the porous ultra-soft ultra-fine denier polyester fiber, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The porous ultra-soft ultra-fine denier polyester fiber is obtained by metering, extruding, cooling, oiling and high-speed winding the modified polyester chips. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The deviation rate of fiber density is ≤0.5%, the CV value of breaking strength is ≤4.0%, the CV value of elongation at break is ≤8.0%, the CV value of yarn unevenness is ≤2.0%.

Claim (Index 4):
The method of  claim 2 , wherein, in the method for preparing the modified polyester:\n in step (1), a molar ratio of the terephthalic acid to the branched diol is 1:1.3-1.5; ; an amount of concentrated sulfuric acid added is 0.3-0.5% of a weight of terephthalic acid; a concentration of concentrated sulfuric acid is 50-60 wt %; in step (2) a molar ratio of the terephthalic acid to the ethylene glycol is 1:1.2-2.0; in step (3), a molar percentage value of the diol terephthalate and the ethylene terephthalate is 2-5%; the catalyst is antimony trioxide, antimony glycol or antimony acetate, and an amount of catalyst added is 0.01%-0.05% of a total weight of terephthalic acid; the stabilizer is triphenyl phosphate, trimethyl phosphate or trimethyl phosphite, and an amount of stabilizer added is 0.01%-0.05% of the total weight of terephthalic acid; a number average molecular weight of the modified polyester ranges from 15000-30000.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 99.0
- Lexical Diversity: 2.23288
- Patent Class: 525.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16322950', '16322948', '15744841', '13579940', '10190040']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7733882895342247
- 35 USC 102 Novelty (BERT): 0.5849480186820056
- Combined Prediction Score: 0.7545442624490027
- Mean Citation Score: 289.84174999999993
- Max Citation Score: 499.35254
- Similarity Product: 498.1674077684236

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

Dataset: test