PATENT CLAIM ANALYSIS

Application Number: 15781879
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["525", "242000"]

Abstract:
The present invention provides vinyl halide polymer thermoplastic polymer compositions comprising a multi-stage, or, preferably, two-stage acrylic copolymer polymeric additive having (A) a high Tg, high molecular weight first stage polymer that is free of, in copolymerized form, vinyl aromatic monomers, and having (B) a low Tg, low molecular weight second stage polymer of copolymerized vinyl aromatic containing monomers, wherein the multi-stage acrylic copolymer can be isolated by coagulation and drying and provides compositions having both melt strength and lubrication in thermoplastic processing.

Claim (Index 10):
A method of making a thermoplastic composition having a single polymeric additive comprises:\n polymerizing in a reactor at a starting temperature of from 5 to 40\u00b0 C., in the presence of an initiator or a redox pair a first monomer mixture in water or an aqueous medium of (a) from 25 to 78.5 wt. % of at least one C 1  to C 6  alkyl methacrylate or C 1  to C 4  alkyl acrylate, (b) from 0 to 75 wt. % of one or more and other polar vinyl monomers, and (c) no more than 10 wt. % of vinyl aromatic monomers, all monomer proportions, based on the total weight of monomers in the first monomer mixture, to form a first stage polymer (A) having a weight average molecular weight as measured by gel permeation chromatography (GPC) against polystyrene standards of from 1\u00d710 6  to 10\u00d710 6  g/mol and having a glass transition temperature as calculated by the Fox Equation (calculated Tg) of from 70 to 105\u00b0 C.; and, sequentially polymerizing in the presence of the first stage polymer a second monomer mixture of (d) at least one C 4  to C 18  alkyl acrylate or C 8  to C 18  alkyl methacrylate, (c) from 0 to 75 wt. % of total vinyl aromatic monomers, and (b) the remainder of one or more other polar vinyl monomers, all monomer proportions based on the total weight of monomers in the second monomer mixture, to form a second stage polymer (B) having a weight average molecular weight (Mw) as measured by GPC against polystyrene standards of from 1,000 to 100,000 g/mol, and having a calculated Tg of from \u221265 to 45\u00b0 C., the total solids weight ratio of the first monomer mixture to the second monomer mixture ranging from 1:3 to 7:1, wherein the first and second monomer mixture is substantially free of and has 0.1 wt. % or less of acid group functional monomers; drying the thus formed polymer to form a multi-stage acrylic copolymeric additive powder; and, providing (i) a vinyl halide polymer and blending it with the multi-stage acrylic copolymeric additive to form a thermoplastic polymer composition.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 94.0
- Lexical Diversity: 1.67241
- Patent Class: 525.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16070825', '15246583', '15320519', '15100762', '15082230']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7964804719485813
- 35 USC 102 Novelty (BERT): 0.4989921182207399
- Combined Prediction Score: 0.7667316365757972
- Mean Citation Score: 268.383448
- Max Citation Score: 297.2808
- Similarity Product: 209.3806221636772

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

Dataset: test