PATENT CLAIM ANALYSIS

Application Number: 16322950
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-05
Patent Classification: ["525", "437000"]

Abstract:
A different shrinkage composite yarn and preparation method. The modified polyester is spun with a porous spinneret to produce a different shrinkage composite yarn, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The different shrinkage composite yarn is obtained by winding modified polyester POY yarn and FDY yarn, network recombining, and coiling them. 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 CV value of breaking strength is ≤4.0%, the CV value of elongation at break is ≤8.0%, the CV value of coefficient of variation of coiling shrinkage is ≤8.0%.

Claim (Index 4):
The method of  claim 2 , wherein, in the method for preparing the modified polyester: 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 %;\n 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 ranges from 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 ranges from 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: 2.11111
- Patent Class: 525.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16322952', '16322948', '15744869', '13579940', '15744841']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7977632288513773
- 35 USC 102 Novelty (BERT): 0.5765610306118711
- Combined Prediction Score: 0.7756430090274267
- Mean Citation Score: 344.208746
- Max Citation Score: 485.1724
- Similarity Product: 481.7626162978648

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