CA2323765A1 - Spray dried tannin/spray dried phenolic dry mixtures to produce osb binders - Google Patents
Spray dried tannin/spray dried phenolic dry mixtures to produce osb binders Download PDFInfo
- Publication number
- CA2323765A1 CA2323765A1 CA 2323765 CA2323765A CA2323765A1 CA 2323765 A1 CA2323765 A1 CA 2323765A1 CA 2323765 CA2323765 CA 2323765 CA 2323765 A CA2323765 A CA 2323765A CA 2323765 A1 CA2323765 A1 CA 2323765A1
- Authority
- CA
- Canada
- Prior art keywords
- osb
- spray dried
- tannin
- binders
- board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011230 binding agent Substances 0.000 title abstract 6
- 235000018553 tannin Nutrition 0.000 title abstract 5
- 229920001864 tannin Polymers 0.000 title abstract 5
- 239000001648 tannin Substances 0.000 title abstract 5
- 239000000203 mixture Substances 0.000 title abstract 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title abstract 4
- 235000013824 polyphenols Nutrition 0.000 title abstract 4
- 239000007921 spray Substances 0.000 title abstract 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 9
- 239000000853 adhesive Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 3
- 238000011065 in-situ storage Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229920005615 natural polymer Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000002516 radical scavenger Substances 0.000 abstract 1
- 229920003987 resole Polymers 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229920001059 synthetic polymer Polymers 0.000 abstract 1
- 235000012431 wafers Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A method of preparing OSB (oriented strand board) binders consisting of modified tannins in solid particulate form and dry blended in a specific manner with spray dried phenolic resole adhesives, the hybrid polymer mix made without the inclusion of any additional formaldehyde 'donors' normally used with the tannin binders. The novel dry mix of specific ratios of dry tannin/phenolic powders when applied to OSB wood wafers and strands in the OSB mill blender allows the mill to implement a reliable new OSB binder adhesive system comprising of various in-situ reactions of the synthetic/natural polymer components in the OSB mill press and finished board. The produced OSB boards exhibit mechanical strength and water resistance properties equal to or superior to OSB boards made with the spray dried phenolic adhesives normally used as the sole OSB binder. The formaldehyde emissions from board pressing operations and from the final finished OSB board are reduced because the tannin acts as a formaldehyde "scavenger" in-situ. The OSB produced with the novel binder mix shows improved mould growth resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2323765 CA2323765C (en) | 2000-10-27 | 2000-10-27 | Spray dried tannin/spray dried phenolic dry mixtures to produce osb binders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2323765 CA2323765C (en) | 2000-10-27 | 2000-10-27 | Spray dried tannin/spray dried phenolic dry mixtures to produce osb binders |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2323765A1 true CA2323765A1 (en) | 2002-04-27 |
| CA2323765C CA2323765C (en) | 2009-09-15 |
Family
ID=4167412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2323765 Expired - Fee Related CA2323765C (en) | 2000-10-27 | 2000-10-27 | Spray dried tannin/spray dried phenolic dry mixtures to produce osb binders |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2323765C (en) |
-
2000
- 2000-10-27 CA CA 2323765 patent/CA2323765C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2323765C (en) | 2009-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20181029 |