Non-cementitious compositions comprising CO2 sequestering additives

• US 7,829,053 B2
• Filed: 10/30/2009
• Issued: 11/09/2010
• Est. Priority Date: 10/31/2008
• Status: Active Grant

• Current Assignee: Arelac, Inc.
• Original Assignee: Calera Corporation
• Inventors: Patterson, Joshua, Constantz, Brent, Youngs, Andrew
• Primary Examiner(s): Vanoy; Timothy C
• Assistant Examiner(s): BERNS, DANIEL J
• Application Number:
  US12/609,491
• Publication Number:
  US 20100111810A1
• Time in Patent Office: 375 Days
• Field of Search: 423/419.1, 423/430, 423/158, 423/165, 436/29, 436/145, 738/66
• US Class Current: 423/430
• CPC Class Codes: B01D 2251/40 Alkaline earth metal or magnesium compounds
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/1418 Recovery of products
• CPC Class Codes: B01D 53/78 with gas-liquid contact
• CPC Class Codes: C01B 32/50 Carbon dioxide
• CPC Class Codes: C01F 11/18 Carbonates
• CPC Class Codes: C01F 5/24 Magnesium carbonates
• CPC Class Codes: C04B 14/26 Carbonates
• CPC Class Codes: C04B 26/02 Macromolecular compounds
• CPC Class Codes: C08K 3/26 Carbonates; Bicarbonates
• CPC Class Codes: C08L 21/00 Compositions of unspecified rubbers
• CPC Class Codes: Y02P 20/151 Reduction of greenhouse gas [GHG] emissions, e.g. CO2
• CPC Class Codes: Y10T 436/23 Carbon containing

Abstract

Non-cementitious CO₂ sequestering compositions are provided. The compositions of the invention include a CO₂ sequestering additive, e.g., a CO₂ sequestering carbonate composition. Additional aspects of the invention include methods of making and using the non-cementitious CO₂ sequestering compositions.

Claims

1. A non-cementitious composition comprising poly(vinyl chloride) (PVC) and a CO₂-sequestering additive, wherein the CO₂-sequestering additive

i) comprises at least 80% of a carbonate compound composition that comprises a mineral selected from the group consisting of aragonite, vaterite, amorphous calcium carbonate, nesquehonite, amorphous magnesium carbonate, and combinations thereof;

ii) comprises a salt-water source identifier selected from the group consisting of strontium, potassium, and bromide; and

iii) has a δ

¹³C value less than −

10%.

2. The non-cementitious composition according to claim 1, wherein the carbonate compound composition comprises a precipitate from an alkaline-earth metal-containing water.

3. The non-cementitious composition according to claim 2, wherein the alkaline-earth metal-containing water comprises CO₂ derived from an industrial waste stream.

4. The non-cementitious composition of claim 1, wherein the amount of the CO₂ sequestering additive in the composition is 35 wt % or more.

5. The non-cementitious composition of claim 1, wherein the PVC is foamed.

6. The non-cementitious composition of claim 1, wherein the non-cementitious composition is formed into a carbonate/PVC lumber material, wherein said carbonate/PVC lumber material is CO₂ sequestering.

7. The non-cementitious composition of claim 6, wherein the CO₂ sequestering additive increases the finishability or stiffness or both finishability and stiffness of the carbonate/PVC lumber material.

8. The non-cementitious composition of claim 6, wherein the CO₂ sequestering additive enhances the coloring or appearance of the carbonate/PVC lumber material.

9. The non-cementitious composition of claim 1, wherein the CO₂-sequestering additive is added to the PVC during the production of the PVC.