# US 12,600,854 B2 · Aragonite-based polymer materials

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- Number: US 12,600,854 B2
- Document ID: US12600854B2
- Status: Granted
- Kind: B2
- Application number: 17/633,127
- Filed: 2020-08-07
- Published: 2022-09-01
- Granted: 2026-04-14
- Earliest claimed: 2019-08-09
- Assignees: Nant Holdings IP, LLC; Calcean Minerals and Materials, LLC
- Applicants: Nant Holdings IP, LLC
- Inventors: Patrick Soon-Shiong; Patrick Lahmann; Alyson Myers
- Web page: https://patentgrep.com/patent/US12600854B2

## CPC

- C08L 1/02: Cellulose; Modified cellulose
- C08L 67/04: Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence)
- C08L 3/02: Starch; Degradation products thereof, e.g. dextrin
- C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence)
- C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence)
- C08L 89/00: Compositions of proteins; Compositions of derivatives thereof
- C08K 2201/003: Additives being defined by their diameter
- 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)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Compositions, methods, and uses of aragonite biobased polymer plastic compositions are presented having increased strength and stiffness as well as improved recyclability and/or biodegradability. The aragonite biobased plastic compositions include aragonite blended in a dispersion with a biobased polymer and optionally includes a petroleum-based polymer and/or a compatibilizer.

## Claims

### Claim 1

A composition of a polymer dispersion comprising:
restructured aragonite and one or more biobased polymers, wherein the restructured aragonite is present in an amount by weight between 9-45%, and wherein the restructured aragonite is a chemically recrystallized aragonite obtained by treatment with an unstructuring agent comprising a chelator or an acid to form an amorphous aragonite, followed by recrystallization;
wherein the one or more biobased polymers are selected from polylactic acid (PLA), polyamide 11, polyamide 410 and blends thereof;
wherein the composition has a flexural strength of or between 45 to 270 MPa; and
wherein the composition has a flexural modulus of or between 2.0 to 7.5 GPa;
wherein the restructured aragonite has a particle size distribution with D98 of 14-15 μm and a D10 of 1.0-1.5 μm.

### Claim 2 (depends on 1)

The composition of claim 1, further comprising one or more petroleum-based polymers.

### Claim 3 (depends on 2)

The composition of claim 2, wherein the one or more petroleum-based polymers are selected from polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene, polyester, nylon, acrylics, and combinations thereof.

### Claim 4 (depends on 2)

The composition of claim 2, wherein the one or more biobased polymers is PLA and the one or more petroleum-based polymers is one or more selected from PE and a copolyester blend of 1.4-butanediol, adipic acid, and terephthalic acid (PBAT), wherein the PE is LDPE and/or LLDPE.

### Claim 5 (depends on 2)

The composition of claim 2, further comprising a compatibilizer grafted to the one or more biobased polymers or the one or more petroleum-based polymers.

### Claim 6 (depends on 5)

The composition of claim 5, the one or more petroleum-based polymers is a polypropylene-based or a polyethylene-based compatibilizer.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the composition is biodegradable or has an increased biodegradability compared to a composition having a comparable flexural strength or flexural modulus and more petroleum-based polymer content.

### Claim 8 (depends on 1)

The composition of claim 1, wherein the composition is recyclable by separation.

### Claim 9 (depends on 1)

The composition of claim 1, wherein the recrystallization forms from the amorphous aragonite a crystal morphology, wherein the crystal morphology is cuboid, elongated cuboid, or dendritic.

### Claim 10 (depends on 1)

The composition of claim 1, wherein the aragonite is derived from a portion of a marine animal.