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 1):
A porous ultra-soft ultra-fine denier polyester fiber, comprising a modified polyester, and the modified polyester is composed of a terephthalic acid chain, an ethylene glycol chain and a. diol chain containing a branched chain;\n a size of the porous ultra-soft ultra-fine denier polyester fiber is 0.20-0.50 dtex; an initial modulus is \u226465 cN/dtex; a breaking strength is \u22653.8 cN/dtex; an elongation at break is 35.0\u00b13.0%; at a temperature of 80\u00b0 C.-130\u00b0 C., a space gap between molecular chains in the modified polyester increases by 10-30v/v %; at a temperature of 260-290\u00b0 C., a melt viscosity decreases by 10-20%; a deviation rate of fiber density of the porous ultra-soft ultra-fine denier polyester fiber is \u22640.5%; a CV value of breaking strength is \u22644.0%. and a CV value of elongation at break is \u22648.0%, and a CV value of coiling shrinkage coefficient of variation is \u22648.0%, and a CV value of yarn unevenness is \u22642.0%; wherein, the increase of the space gap between the molecular chains refers to a comparison of the spatial gaps between molecular chains at a same temperature between the modified polyester and a common polyester; the branched hexanediol is one or more items selected from the group consisting of 2-pentyl-1,6 hexanediol, 2-hexyl-1,6 hexanediol, 2-heptyl-1,6 hexanediol, 2-octyl-1, 6 hexanediol, 2-mercapto-1,6 hexanediol and 2-mercapto-1,6 hexanediol.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 99.0
- Lexical Diversity: 2.23288
- Patent Class: 525.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16322950', '16322948', '15744841', '13579940', '10190040']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7604504442252442
- 35 USC 102 Novelty (BERT): 0.5558230407694069
- Combined Prediction Score: 0.7399877038796605
- Mean Citation Score: 289.84174999999993
- Max Citation Score: 499.35254
- Similarity Product: 359.8480885560012

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