GB1403154A - Resin-coated rice hulls and the production of composite articles therefrom - Google Patents
Resin-coated rice hulls and the production of composite articles therefromInfo
- Publication number
- GB1403154A GB1403154A GB5602873A GB5602873A GB1403154A GB 1403154 A GB1403154 A GB 1403154A GB 5602873 A GB5602873 A GB 5602873A GB 5602873 A GB5602873 A GB 5602873A GB 1403154 A GB1403154 A GB 1403154A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resin
- hulls
- board
- coated
- rice hulls
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
1403154 Coating rice hulls COR TECH RESEARCH LTD 4 Dec 1973 [14 Dec 1972 (2)] 56028 73 Heading B2E [Also in Divisions B5 and C3] Rice hulls are at least partially coated with a caustic (i.e. alkali) free, thermosetting phenolformaldehyde resin which is of a type that, in its uncured state, has a viscosity of more than 100 Krebb units at 120F. The hulls may initially be cleaned by toppling, grinding or abrading in a fluid stream followed by sieving or air flotation to remove the "fines" or dust. The resin may be applied as a powder or as an emulsion by rubbing on with rollers or by spraying inside a rotating blender provided with baffles, usually at a temperature above 150F. A pH-reducing acid catalyst or chemical that will decompose to yield such acid catalyst may also be sprayed onto the hulls, either before, after or together with the resin. A composition comprising the resin-coated rice hulls optionally together with wood chips and flakes may be fabricated into a composite article, particularly a board, by curing. Layers of the composition may be laid up in a press and cured under heat and pressure to form the board. The hulls in the outer layers of the board may be coated with 10-12% resin while those of the core layer may be coated with only 8-10%, thus providing greater surface hardness, The outer layers may also contain more fines relative to the core and may contain very little or no catalyst while the core contains 5-10% catalyst to ensure uniform cure of the board.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN2152CA1972 | 1972-12-14 | ||
US00314973A US3850677A (en) | 1972-12-14 | 1972-12-14 | Resin coated rice hulls, compositions containing the same and processes for making such compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1403154A true GB1403154A (en) | 1975-08-13 |
Family
ID=26324453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5602873A Expired GB1403154A (en) | 1972-12-14 | 1973-12-04 | Resin-coated rice hulls and the production of composite articles therefrom |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA1010173A (en) |
GB (1) | GB1403154A (en) |
IN (1) | IN142256B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2145421A (en) * | 1983-08-26 | 1985-03-27 | Seang Ha Park | Manufacture of a building element |
US6887064B2 (en) | 2002-06-18 | 2005-05-03 | Sung Kuk Soh | Method and apparatus for producing non-planar formed parts using compaction molding compounds, and parts formed using same |
WO2008000228A1 (en) * | 2006-06-26 | 2008-01-03 | Fachhochschule Eberswalde | Method for producing a surface comprising natural products |
-
1973
- 1973-11-29 CA CA186,974A patent/CA1010173A/en not_active Expired
- 1973-12-04 GB GB5602873A patent/GB1403154A/en not_active Expired
-
1975
- 1975-10-31 IN IN2099/CAL/1975A patent/IN142256B/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2145421A (en) * | 1983-08-26 | 1985-03-27 | Seang Ha Park | Manufacture of a building element |
US6887064B2 (en) | 2002-06-18 | 2005-05-03 | Sung Kuk Soh | Method and apparatus for producing non-planar formed parts using compaction molding compounds, and parts formed using same |
WO2008000228A1 (en) * | 2006-06-26 | 2008-01-03 | Fachhochschule Eberswalde | Method for producing a surface comprising natural products |
Also Published As
Publication number | Publication date |
---|---|
IN142256B (en) | 1977-06-18 |
CA1010173A (en) | 1977-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |