Coating compositions for oriented strand boards and associated methods of use

Patent metadata

Field	Value
Publication number	US-11021676-B2
Application number	US-201715432181-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Feb 26, 2016
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

Wax compositions are provided with improved properties for various applications, such as coating of composite cellulosic materials, e.g., composite wood material, more specifically oriented strand board. As described herein, wax compositions include a kinematic viscosity measured at 100° C. of ≤13.1 mm2/s; and a contact angle on glass of ≤34.4°, which provide enhanced water proofing properties. The wax composition may have a flash point of greater than 450° F. Wax composition are provided with improved properties for candle jars. As described herein, candle jar wax compositions include 150N foots oil and 600N slack wax. The wax composition can include up to about 80% 150N foots oil.

First claim

The invention claimed is:

1. A wax coated article comprising a composite cellulosic material having a surface including a wax coating, wherein the wax coating comprises a wax composition comprising a paraffin wax, the wax composition having a flash point of at least 425° F., a kinematic viscosity measured at 100° C. of ≤13.1 mm 2 /s, and a contact angle on glass of ≤34.4°.

2. The wax coated article of claim 1 , wherein the wax coating is 0.1% by weight to 15% by weight of the composite cellulosic material or wax coated article.

3. The wax coated article of claim 2 , wherein the wax coating is 0.1% by weight to 5% by weight of the composite cellulosic material or wax coated article.

4. The wax coated article of claim 3 , wherein the wax coating is 0.1% by weight to 1% by weight of the composite cellulosic material or wax coated article.

5. The wax coated article of claim 1 , wherein the composite cellulosic material is a composite wood material, oriented strand board (OSB), particleboard, medium density fiberboard, construction board or combination thereof.

6. The wax coated article of claim 1 , wherein the composite cellulosic material is oriented strand board (OSB).

7. The wax coated article of claim 1 , wherein the wax coating completely or partially covers the surface of the composite cellulosic material.

8. The wax coated article of claim 1 , wherein the wax coated article comprises a wax coating of from 1% weight to 90% by weight of the composite cellulosic material.

9. The wax coated article of claim 1 , wherein the wax coated article has a water absorption of less than 20%.

10. The wax coated article of claim 1 , wherein the wax coated article has a water absorption of less than 15%.

11. The wax coated article of claim 1 , wherein the wax coated article: has a water absorption of less than 13%.

12. The wax coated article of claim 1 , comprising a kinematic viscosity measured at 100° C. of ≤11 mm 2 /s, and a contact angle on glass of ≤34.4°.

13. The wax coated article of claim 1 , wherein the kinematic viscosity is ≤10 mm 2 /s.

14. The wax coated article of claim 13 , wherein the kinematic viscosity is ≤7.9 mm 2 /s.

15. The wax coated article of claim 1 , herein the kinematic viscosity is from 6.5 mm 2 /s to 13 mm 2 /s.

16. The wax coated article of claim 1 , wherein the contact angle on glass is ≤34°.

17. The wax coated article of claim 16 , wherein the contact angle on glass is ≤32°.

18. The wax coated article of claim 17 , wherein the contact angle on glass is ≤30°.

19. A method of manufacturing a wax coated article comprising the steps of providing a cellulosic material, and applying a wax composition comprising a paraffin wax to the cellulosic material, the wax composition having a flash point of at least 425° F., a kinematic viscosity measured at 100° C. of ≤13.1 mm 2 /s, and a contact angle on glass of ≤34.4°.

Assignees

• Exxonmobil Res & Eng Co

Inventors

• Agrawal Sarvesh K
• Rud Joseph P
• Hoch Larry E

Classifications

• C09D191/06 Primary

  Waxes · CPC title

• C09D191/00

  Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof (polishing compositions, ski waxes C09G) · CPC title

• B27N7/005

  Coating boards, e.g. with a finishing or decorating layer · CPC title

• C11C5/002 Primary

  Ingredients · CPC title

• C09D191/08

  Mineral waxes · CPC title