# US 8,465,818 B2 · Polyamides and polyesters blended with a lithium salt interfacial tension reducing agent

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,465,818 B2
- Document ID: US8465818B2
- Status: Granted
- Kind: B2
- Application number: 11/537,672
- Filed: 2006-10-02
- Published: 2007-04-12
- Granted: 2013-06-18
- Earliest claimed: 2005-10-07
- Assignees: M&G USA Corporation
- Applicants: Paul Lewis Heater; Guliz Arf Elliott
- Inventors: Paul Lewis Heater; Guliz Arf Elliott
- Web page: https://patentgrep.com/patent/US8465818B2

## CPC

- B32B 1/00: Layered products having a non-planar shape
- B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)}
- B32B 27/18: characterised by the use of special additives
- B32B 27/34: comprising polyamides
- B32B 27/36: comprising polyesters
- C08G 63/78: Preparation processes
- C08G 63/916: {Dicarboxylic acids and dihydroxy compounds}
- C08J 3/005: {Processes for mixing polymers}
- C08K 5/42: Sulfonic acids; Derivatives thereof
- C08L 67/00: Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers
- C08L 67/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence)
- C08L 77/00: Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers
- C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence)
- B32B 2367/00: Polyesters, e.g. PET, i.e. polyethylene terephthalate
- B32B 2377/00: Polyamides
- B32B 2439/00: Containers; Receptacles
- B32B 2553/00: Packaging equipment or accessories not otherwise provided for
- C08K 3/24: Acids; Salts thereof {(C08K3/16 takes precedence)}
- C08L 77/10: Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
- C08L 2205/18: Spheres
- Y10T 428/13: Hollow or container type article [e.g., tube, vase, etc.]
- Y10T 428/1334: Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
- Y10T 428/1352: Polymer or resin containing [i.e., natural or synthetic]
- Y10T 428/1355: Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T 428/139: Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T 428/1393: Multilayer [continuous layer]
- Y10T 428/1397: Single layer [continuous layer]
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A polymer composition and wall of a container made from such composition is set forth comprising a polyamide and polyester and a sufficient amount of an interfacial tension reducing agent such that the polyamide domains stretch disproportionately to the amount of stretch experienced by the polyester both with and without a cobalt salt.

## Claims

### Claim 1

A bottle comprising a layer with a stretched region, wherein the layer is comprised of a polyamide comprising at least one reaction product selected from the group consisting of the reaction of amino caproic acid with itself, and the reaction product of A-D where A is a residue of dicarboxylic acid comprising adipic acid, isophthalic acid, terephthalic acid, 1,4 cyclohexanedicarboxylic acid, resorcinol dicarboxylic acid, or naphthalenedicarboxylic acid, or a mixture thereof, and D is a residue of a diamine comprising m-xylylene diamine, p-xylylene diamine, hexamethylene diamine, ethylene diamine, or 1,4 cyclohexanedimethylamine, or a mixture thereof, dispersed into a crystallizable polyester with at least 85% of the polyester acid units derived from terephthalic acid or the dimethyl ester of terephthalic acid, an interfacial tension reducing agent
wherein the interfacial tension reducing agent is lithium sulfobenzoate and wherein the stretch ratio of the polyamide domains divided by the stretch ratio of the crystallizable polyester in the same direction is less than 75% and the wall is void of a cobalt compound.

### Claim 2 (depends on 1)

The bottle of claim 1 wherein the polyamide is nylon 6.

### Claim 3 (depends on 1)

The bottle of claim 1 wherein the polyamide is selected from the group consisting of MXD6 and nylon 6.

### Claim 4 (depends on 1)

The bottle of claim 1 wherein the polyamide is MXD6 nylon.

### Claim 5 (depends on 1)

The bottle of claim 1 wherein the average diameter of the dispersed particles is less than 100 nm.

### Claim 6 (depends on 1)

The bottle of claim 1 wherein the average diameter of the dispersed particles is less than 75 nm.

### Claim 7 (depends on 1)

The bottle of claim 1 wherein the average diameter of the dispersed particles is less than 60 nm.

### Claim 8 (depends on 1)

The bottle of claim 1 wherein the average diameter of the dispersed particles is less than 50 nm.