PATENT CLAIM ANALYSIS

Application Number: 16012109
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-11
Patent Classification: ["524", "543000"]

Abstract:
The invention relates to stabilizer compositions for polymers such as polyolefin polymers, which decrease a phosphorus based stabilizer content necessary to stabilize the polymer. The premixed stabilizer compositions include an antacid, an organic acid-metal salt, and a primary antioxidant such as a sterically-hindered phenolic compound, a sterically-hindered amine compound, a hydroxylamine compound, and combinations thereof. The premixed stabilizer may further include a portion of the phosphorus based stabilizer content necessary to stabilize the polymer. The invention also relates to a method for the preparation of the stabilized polymer compositions provided by the use thereof.

Claim (Index 14):
A stabilized polymer composition comprising:\n polypropylene; and about 50 parts per million (ppm) to about 20,000 ppm of a stabilizer composition, comprising: (a) about 1 wt % to about 60 wt % based on the total weight of the stabilizer composition of an antacid which does not fall under the compounds of (b) selected from the group consisting of metal oxides, metal hydroxides, metal bicarbonates, natural hydrocalumites, synthetic hydrocalumites, pyrocatecholates, zeolites, and combinations thereof; (b) about 10 wt % to about 69 wt % based on the total weight of the stabilizer composition of an organic acid-metal salt having a general formula M1Ym, wherein M1 is selected from the group consisting of bismuth, zinc, magnesium, lithium, sodium, potassium, barium, strontium, aluminum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and combinations thereof; wherein Y is a conjugate base of an organic acid, having from six to twenty-four carbon atoms, selected from the group consisting of a linear or branched organic acid, a saturated or unsaturated organic acid, a substituted or unsubstituted organic acid, an aliphatic organic acid, an alicyclic organic acid, an oxygen-containing heterocyclic organic acid, dicarboxylic acid, polyprotic carboxylic acids, and combinations thereof; and wherein m is an integer from 1 to 3; and (c) about 30 wt % to about 89 wt % based on the total weight of the stabilizer composition of a primary antioxidant selected from the group consisting of sterically hindered phenolic compounds, hindered amine compounds, hydroxylamine compounds, and combinations thereof; wherein the composition is free or substantially free of phosphite and phosphonite stabilizers; and wherein at least two of the following conditions under multipass extrusion of the stabilized polymer composition in a Twin Screw Extruder are met:\n a) the melt flow ratio (MFR) measured according to ASTM D1238 (g/10 min, 190\u00b0 C., 10 kg) of the stabilized polypropylene after the fifth pass of a multi pass extrusion is less than 10% higher than the MFR after the first pass or it is lower, \n b) the yellowness index (YI) of the stabilized polypropylene measured according to ASTM D6290-13 after one pass is less than 0 and less than the YI of the polypropylene extruded under the same conditions without stabilizer, \n c) the YI of the stabilized polypropylene measured according to ASTM D6290-13 after 1 pass is less than 1, \n d) the YI of the stabilized polypropylene measured according to ASTM D6290-13 after 5 passes is less than 0, \n e) the initial YI of the stabilized polypropylene measured according to ASTM D6290-13 is below 0 and the YI after 5 passes is below 6, \n f) the L value of the stabilized polypropylene measured according to EN ISO 11664-4 after any of 1, 3 or 5 passes is above 74, \n g) the whiteness index (CIE [D65/10]) after 5 passes is more than 20, \n h) the melt flow ratio (MFR) measured according to ASTM D1238 (g/10 min, 190\u00b0 C., 10 kg) of the stabilized polypropylene after the first pass of a multi pass extrusion is less than the MFR of unstabilized polypropylene, \n i) the melt flow ratio (MFR) measured according to ASTM D1238 (g/10 min, 190\u00b0 C., 10 kg) of the stabilized polypropylene after the fifth pass is lower than the MFR of the unstabilized polypropylene after the third pass.

Metadata:
- Claim Count in Document: 33.0
- Percentile: 94.0
- Lexical Diversity: 2.03922
- Patent Class: 524.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14777184', '14700560', '15624229', '12789832', '12082967']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8044163353687186
- 35 USC 102 Novelty (BERT): 0.6058891558005453
- Combined Prediction Score: 0.7845636174119013
- Mean Citation Score: 338.976452
- Max Citation Score: 614.3783599999998
- Similarity Product: 469.9981915379141

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

Dataset: test