# US 2017/0283597 A1 · Articles Formed with Biodegradable Materials and Strength Characteristics of Same

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- Number: US 2017/0283597 A1
- Document ID: US20170283597A1
- Status: Published application
- Kind: A1
- Application number: 15/628,379
- Filed: 2017-06-20
- Published: 2017-10-05
- Earliest claimed: 2015-06-30
- Assignees: Biologiq, Inc.
- Applicants: BiologiQ, Inc.
- Inventors: Bradford LaPray; Wenji Quan
- Web page: https://patentgrep.com/patent/US20170283597A1

## CPC

- C08L 3/02: Starch; Degradation products thereof, e.g. dextrin
- B29C 48/08: flexible, e.g. films
- B29C 48/83: {Heating or cooling the cylinders}
- B29C 48/875: for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
- B29C 48/92: Measuring, controlling or regulating
- B32B 9/02: comprising animal or vegetable substances {, e.g. cork, bamboo, starch}
- B32B 9/045: {of synthetic resin}
- B32B 27/08: of synthetic resin
- B32B 27/18: characterised by the use of special additives
- B32B 27/22: using plasticisers
- B32B 27/28: comprising synthetic resins not wholly covered by any one of the sub-groups {B32B27/30 - B32B27/42}
- B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/34: comprising polyamides
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- B29C 48/022: {characterised by the choice of material}
- B29C 2948/92704: Temperature
- B32B 2250/02: 2 layers
- B32B 2250/04: 4 layers
- B32B 2250/05: 5 or more layers
- B32B 2250/24: All layers being polymeric
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/7163: Biodegradable
- B32B 2307/732: Dimensional properties
- B32B 2439/46: Bags
- C08L 2201/06: Biodegradable
- C08L 2203/16: used for films
- C08L 2205/03: containing three or more polymers in a blend
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

Described herein are strength characteristics and biodegradation of articles produced using one or more petrochemical-based polymers and one or more carbohydrate-based polymers. A compatibilizer can optionally be included in the article. In some cases, the article can include a film or bag.

## Claims

### Claim 1

An article comprising:
a starch-based polymeric material formed from a mixture of starches including a first amount of a first starch and a second amount of a second starch; and
a polyolefin-based polymeric material;
wherein the article has a dart drop impact test value that is greater than: (i) a first dart drop impact test value of a first article including the polyolefin-based polymeric material and a first starch-based polymeric material formed from a single starch that is the first starch, and (ii) a second dart drop impact test value of a second article including the polyolefin-based polymeric material and a second starch-based polymeric material formed from a single starch that is the second starch.

### Claim 2 (depends on 1)

The article of claim 1, wherein the starch-based polymeric material is formed from one or more plasticizers.

### Claim 3 (depends on 2)

The article of claim 2, further comprising a compatibilizer present in an amount of about 3% by weight to about 7% by weight of the article.

### Claim 4 (depends on 1)

The article of claim 1, wherein the first starch is derived from one of potato, corn, or tapioca; and the second starch is derived from a different one of potato, corn, or tapioca.

### Claim 5 (depends on 1)

The article of claim 1, wherein starch-based polymeric material is present in an amount from about 20% by weight to about 30% by weight of the article and the polyolefin-based polymeric material is present in an amount from about 65% by weight to about 75% by weight of the article.

### Claim 6 (depends on 5)

The article of claim 5, wherein the first starch comprises from about 10% by weight to about 25% by weight of the mixture of starches, and the second starch comprises from about 55% to 85% of the mixture of starches.

### Claim 7 (depends on 6)

The article of claim 6, wherein:
the starch-based polymeric material includes a third starch;
the third starch comprises from about 10% by weight to about 25% by weight of the mixture of starches; and
the dart drop impact test value of the articles is greater than a third dart drop impact test value of a third article including the polyolefin-based polymeric material and a third starch-based polymeric material formed a single starch that is the third starch.

### Claim 8 (depends on 1)

The article of claim 1, wherein the article has a tensile elongation at break value in the machine direction that is greater than an additional tensile elongation at break value in the machine direction of an additional article formed from the polyolefin-based polymeric material that is free of starch-based polymeric materials.

### Claim 9

A process comprising:
providing one or more polymeric materials;
providing one or more starch-based polymeric materials formed from a mixture of starches including a first starch and a second starch;
mixing the one or more polymeric materials and the one or more starch-based polymeric materials to produce a mixture of materials;
heating the mixture of materials at a temperature in a range from about 120° C. to about 180° C.; and
producing a film using the mixture of materials, the film having a dart drop impact test value that is greater than: (i) a first dart drop impact test value of a first article including the polymeric material and a first starch-based polymeric material formed from a single starch that is the first starch, and (ii) a second dart drop impact test value of a second article including the polymeric material and a second starch-based polymeric material formed from a single starch that is the second starch.

### Claim 10 (depends on 9)

The process of claim 9, wherein producing the film using the mixture of materials includes:
extruding the mixture of materials to produce an extruded object; and
injecting a gas into the extruded object.

### Claim 11 (depends on 9)

The process of claim 9, wherein the film has a dart drop impact test value from about 250 g to about 350 g.

### Claim 12 (depends on 9)

The process of claim 9, wherein:
the mixture of materials further comprises one or more compatibilizers; and
the mixture of materials includes:
from about 10% by weight to about 40% by weight of the one or more starch-based polymeric materials, from about 60% by weight to about 89% by weight of the one or more polymeric materials; and
from about 1% by weight to about 9% by weight of the one or more compatibilizers.

### Claim 13 (depends on 9)

The process of claim 9, wherein the article includes a film having a thickness from about 0.02 mm to about 0.05 mm.

### Claim 14 (depends on 9)

The process of claim 9, wherein the polymeric material comprises a polyolefin-based polymeric material.

### Claim 15 (depends on 9)

The process of claim 9, wherein the polymeric material comprises at least one of polyethylene, polypropylene, polystyrene, high impact polystyrene, nylon, polymethylpentene, polybutene.

### Claim 16 (depends on 15)

The process of claim 15, wherein the polymeric material comprises a polyethylene, the polyethylene comprising at least one of ultra-high-molecular-weight polyethylene, ultra-low-molecular-weight polyethylene, high-molecular-weight polyethylene, high-density polyethylene, high-density cross-linked polyethylene, cross-linked polyethylene, medium-density polyethylene, linear low-density polyethylene, low-density polyethylene, or very-low-density polyethylene.